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Year 1998 , Volume  30, Issue 1
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1
OBITUARY - Dr. Inamullah Khan - (1919-1997)
GHAFFAR, A. AND R.A. CHAOHAN

OBITUARY - Dr. Inamullah Khan - (1919-1997)
ABSTRACT:

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2
OBITUARY - Dr. Inamullah Khan - (1919-1997)
GHAFFAR, A. AND R.A. CHAOHAN

OBITUARY - Dr. Inamullah Khan - (1919-1997)
ABSTRACT:

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3
POLLEN FLORA OF PAKISTAN -XIV. CISTACEAE
ANJUM PERVEEN AND M. QAISER

POLLEN FLORA OF PAKISTAN -XIV. CISTACEAE
ABSTRACT:
Pollen morphology of the family Cistaceae has been examined from Pakistan by light and scanning electron microscope. Pollen grains are generally tricolporate, triangular, prolate-spheroidal with striate rugulate tectum.

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4
POLLEN FLORA OF PAKISTAN -XIV. CISTACEAE
ANJUM PERVEEN AND M. QAISER

POLLEN FLORA OF PAKISTAN -XIV. CISTACEAE
ABSTRACT:
Pollen morphology of the family Cistaceae has been examined from Pakistan by light and scanning electron microscope. Pollen grains are generally tricolporate, triangular, prolate-spheroidal with striate rugulate tectum.

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5
SOME NEW RECORDS OF DESMIDS FROM TURKEY
BÜLENT SAHIN

SOME NEW RECORDS OF DESMIDS FROM TURKEY
ABSTRACT:
Euastrum oblongum, E. verrucosum var. rhomboideum, Micrasterias americana, M. denticulata. M. rotata, Staurastrum pilosum and Spondylosium planum are recorded for the first time from Turkey.

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6
SOME NEW RECORDS OF DESMIDS FROM TURKEY
BÜLENT SAHIN

SOME NEW RECORDS OF DESMIDS FROM TURKEY
ABSTRACT:
Euastrum oblongum, E. verrucosum var. rhomboideum, Micrasterias americana, M. denticulata. M. rotata, Staurastrum pilosum and Spondylosium planum are recorded for the first time from Turkey.

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7
STUDIES ON THE FRESH WATER ALGAE OF SINDH-II, VAUCHERIA SPECIES FROM SALINE AND FRESH WATER RIVERINE PONDS OF HYDERABAD SINDH, PAKISTAN.
S.M. LEGHARI, A. BANO*, M.Y. KHUHAWAR** AND T.M. JAHANGIR**

STUDIES ON THE FRESH WATER ALGAE OF SINDH-II, VAUCHERIA SPECIES FROM SALINE AND FRESH WATER RIVERINE PONDS OF HYDERABAD SINDH, PAKISTAN.
ABSTRACT:
Vaucheria geminata (Vaucher) de Candole var. geminata was found preponderant in the beta-mesosaprobic riverine pond in winter and V. longicaulis Hoppaugh in eusaprobic pond in Hyderabad, Sindh, Pakistan throughout the year.

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8
STUDIES ON THE FRESH WATER ALGAE OF SINDH-II, VAUCHERIA SPECIES FROM SALINE AND FRESH WATER RIVERINE PONDS OF HYDERABAD SINDH, PAKISTAN.
S.M. LEGHARI, A. BANO*, M.Y. KHUHAWAR** AND T.M. JAHANGIR**

STUDIES ON THE FRESH WATER ALGAE OF SINDH-II, VAUCHERIA SPECIES FROM SALINE AND FRESH WATER RIVERINE PONDS OF HYDERABAD SINDH, PAKISTAN.
ABSTRACT:
Vaucheria geminata (Vaucher) de Candole var. geminata was found preponderant in the beta-mesosaprobic riverine pond in winter and V. longicaulis Hoppaugh in eusaprobic pond in Hyderabad, Sindh, Pakistan throughout the year.

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9
BIOACTIVE COMPOUNDS IN CHARA CORALLINA VAR. WALLICHII (A. BR.) R. D. WOOD (CHAROPHYTA)
S. M. KHALIQ-UZ-ZAMAN, SIMIN SHAMEEL, MUSTAFA SHAMEEL*, SULTAN MAHMOOD LEGHARI** AND VIQAR UDDIN AHMAD

BIOACTIVE COMPOUNDS IN CHARA CORALLINA VAR. WALLICHII (A. BR.) R. D. WOOD (CHAROPHYTA)
ABSTRACT:
Methanolic (MeOH) extract of Chara corallina var. wallichii (A. Br.) R. D. Wood has been analysed for its fatty acid and sterol compositions. Using GC-MS technique 23 fatty acids viz., 7 saturated, 6 monoenoic, 5 dienoic and 5 trienoic acids were identified as methyl esters, where 63.5 % were unsaturated and 36.5 % as saturated acids. With the exception of heptanoic and pentacosenoic, the acids ranged from C 10 to C18; longer-chain and polyunsaturated acids beyond trienoic ones were not detected. Hexadecadienoic acid occurred in greatest amount (23.7%), and pentadecylic and palmitic acids appeared to be the major saturated acids. Besides, 4 sterols have been identified by spectroscopic techniques, where ß-sitosterol was 76.8 % while cholesterol, c1erosterol and stigmasterol were 6.4-8.7 %. The alga resembled in certain characters of fatty acid and sterol compositions with cWorophytes and in others with higher plants. The MeOH extract, its EtOAc-soluble part and four isolated sterols showed bioactivity against 10 species of bacteria and 10 species of fungi and phytotoxicity against Lernna minor. ß-Sitosterol was least active in its bioactivity as well as phytotoxicity.

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10
BIOACTIVE COMPOUNDS IN CHARA CORALLINA VAR. WALLICHII (A. BR.) R. D. WOOD (CHAROPHYTA)
S. M. KHALIQ-UZ-ZAMAN, SIMIN SHAMEEL, MUSTAFA SHAMEEL*, SULTAN MAHMOOD LEGHARI** AND VIQAR UDDIN AHMAD

BIOACTIVE COMPOUNDS IN CHARA CORALLINA VAR. WALLICHII (A. BR.) R. D. WOOD (CHAROPHYTA)
ABSTRACT:
Methanolic (MeOH) extract of Chara corallina var. wallichii (A. Br.) R. D. Wood has been analysed for its fatty acid and sterol compositions. Using GC-MS technique 23 fatty acids viz., 7 saturated, 6 monoenoic, 5 dienoic and 5 trienoic acids were identified as methyl esters, where 63.5 % were unsaturated and 36.5 % as saturated acids. With the exception of heptanoic and pentacosenoic, the acids ranged from C 10 to C18; longer-chain and polyunsaturated acids beyond trienoic ones were not detected. Hexadecadienoic acid occurred in greatest amount (23.7%), and pentadecylic and palmitic acids appeared to be the major saturated acids. Besides, 4 sterols have been identified by spectroscopic techniques, where ß-sitosterol was 76.8 % while cholesterol, c1erosterol and stigmasterol were 6.4-8.7 %. The alga resembled in certain characters of fatty acid and sterol compositions with cWorophytes and in others with higher plants. The MeOH extract, its EtOAc-soluble part and four isolated sterols showed bioactivity against 10 species of bacteria and 10 species of fungi and phytotoxicity against Lernna minor. ß-Sitosterol was least active in its bioactivity as well as phytotoxicity.

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11
GENOTOXICITY TESTING OF SOME SPICES IN DIPLOID YEAST
SAJJAD R. CHUGHTAI*, MASOOMA A. AHMAD, KHALID NASEEM* AND AKBAR S. MOHMAND*

GENOTOXICITY TESTING OF SOME SPICES IN DIPLOID YEAST
ABSTRACT:
A study was conducted to assess the mutagenic and recombinogenic potential of 10 commonly consumed spices and condiments viz., bay leaves, black pepper, cardamom small, caraway, red chilies, cinnamon, coriander, fennel, garlic and curry powder in the diploid yeast Saccharomyces cerevisiae. Aqueous extracts of these spices were tested for the induction of mitotic gene conversion and reverse mutation in the diploid strain D7 of the yeast. All except cinnamon failed to induce detectable recombination and mutations in the growing cells of the yeast without exogenous metabolic activation. Treatments with an aqueous extracts of cinnamon significantly increased the rate of gene conversion and reverse mutation. Cinnamon caused cells death and inhibition of cell division. Ethyl methane sulphonate (EMS) used as a positive control exhibited recombinogenic and mutagenic effects.

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12
GENOTOXICITY TESTING OF SOME SPICES IN DIPLOID YEAST
SAJJAD R. CHUGHTAI*, MASOOMA A. AHMAD, KHALID NASEEM* AND AKBAR S. MOHMAND*

GENOTOXICITY TESTING OF SOME SPICES IN DIPLOID YEAST
ABSTRACT:
A study was conducted to assess the mutagenic and recombinogenic potential of 10 commonly consumed spices and condiments viz., bay leaves, black pepper, cardamom small, caraway, red chilies, cinnamon, coriander, fennel, garlic and curry powder in the diploid yeast Saccharomyces cerevisiae. Aqueous extracts of these spices were tested for the induction of mitotic gene conversion and reverse mutation in the diploid strain D7 of the yeast. All except cinnamon failed to induce detectable recombination and mutations in the growing cells of the yeast without exogenous metabolic activation. Treatments with an aqueous extracts of cinnamon significantly increased the rate of gene conversion and reverse mutation. Cinnamon caused cells death and inhibition of cell division. Ethyl methane sulphonate (EMS) used as a positive control exhibited recombinogenic and mutagenic effects.

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13
EFFECT OF PHYSICAL PARAMETERS ON THE INCIDENCE OF ROOT AND COLLAR ROT DISEASE IN CHILLIES
A. SALEEM, M.ANSAR, K. HAMID, AND FARHAT F.JAMIL*

EFFECT OF PHYSICAL PARAMETERS ON THE INCIDENCE OF ROOT AND COLLAR ROT DISEASE IN CHILLIES
ABSTRACT:
The effect of physical parameters like temperature, flooding duration and soil type on the incidence of root and collar rot disease of chillies was examined. The disease incidence increased from 0-100% with rise in temperature from 15-30°C producing maximum canker length (4.5 cm) and girdling index (4 em). Gradual increase of flooding period from 0-48 hours enhanced the disease development from 25-100 % with maximum Canker length (3.66 cm) and girdling index at 48 h flooding period. Heavy soils showed 83.3% disease as compared to light medium soil which respectively showed 50 and 66.7% of disease incidence.

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14
EFFECT OF PHYSICAL PARAMETERS ON THE INCIDENCE OF ROOT AND COLLAR ROT DISEASE IN CHILLIES
A. SALEEM, M.ANSAR, K. HAMID, AND FARHAT F.JAMIL*

EFFECT OF PHYSICAL PARAMETERS ON THE INCIDENCE OF ROOT AND COLLAR ROT DISEASE IN CHILLIES
ABSTRACT:
The effect of physical parameters like temperature, flooding duration and soil type on the incidence of root and collar rot disease of chillies was examined. The disease incidence increased from 0-100% with rise in temperature from 15-30°C producing maximum canker length (4.5 cm) and girdling index (4 em). Gradual increase of flooding period from 0-48 hours enhanced the disease development from 25-100 % with maximum Canker length (3.66 cm) and girdling index at 48 h flooding period. Heavy soils showed 83.3% disease as compared to light medium soil which respectively showed 50 and 66.7% of disease incidence.

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15
EFFECT OF ORGANIC AMENDMENTS ON THE EFFICACY OF PSEUDOMONAS AERUGINOSA IN THE CONTROL OF ROOT ROT DISEASE OF SUNFLOWER
SYED EHTESHAMUL-HAQUE, M. JAVED ZAKI, AHSAN A. VAHlDY* AND ABDUL GHAFFAR

EFFECT OF ORGANIC AMENDMENTS ON THE EFFICACY OF PSEUDOMONAS AERUGINOSA IN THE CONTROL OF ROOT ROT DISEASE OF SUNFLOWER
ABSTRACT:
Soil amendment with neem seed cake, cotton seed cake, Datura fastuosa and Steochospermum marginatum significantly (p<0.05) reduced Fusarium solani whereas neem seed cake and cotton seed cake were effective against Macrophomina phaseolina and Rhizoctonia solani, while Steochospermum marginatum and D. fastuosa against Rhizoctonia solani infection on sunflower roots. Pseudomonas aeruginosa, the plant growth promoting bacterium significantly controlled root rot disease of sunflower caused by M. phaseolina, R. solani and F. solani. Use of P. aeruginosa with neem seed cake and S. marginatum produced greater fresh weight of shoot and plant height respectively as compared to their separate use.

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16
EFFECT OF ORGANIC AMENDMENTS ON THE EFFICACY OF PSEUDOMONAS AERUGINOSA IN THE CONTROL OF ROOT ROT DISEASE OF SUNFLOWER
SYED EHTESHAMUL-HAQUE, M. JAVED ZAKI, AHSAN A. VAHlDY* AND ABDUL GHAFFAR

EFFECT OF ORGANIC AMENDMENTS ON THE EFFICACY OF PSEUDOMONAS AERUGINOSA IN THE CONTROL OF ROOT ROT DISEASE OF SUNFLOWER
ABSTRACT:
Soil amendment with neem seed cake, cotton seed cake, Datura fastuosa and Steochospermum marginatum significantly (p<0.05) reduced Fusarium solani whereas neem seed cake and cotton seed cake were effective against Macrophomina phaseolina and Rhizoctonia solani, while Steochospermum marginatum and D. fastuosa against Rhizoctonia solani infection on sunflower roots. Pseudomonas aeruginosa, the plant growth promoting bacterium significantly controlled root rot disease of sunflower caused by M. phaseolina, R. solani and F. solani. Use of P. aeruginosa with neem seed cake and S. marginatum produced greater fresh weight of shoot and plant height respectively as compared to their separate use.

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17
STUDIES ON NUCLEI AND APPENDAGES IN SOME COELOMYCETES
S.Q. ABBAS, B.C. SUTTON* AND A. GHAFFAR**

STUDIES ON NUCLEI AND APPENDAGES IN SOME COELOMYCETES
ABSTRACT:
Number of nuclei and the nature, arrangement and number of appendages in 8 genera of Coelomycetes viz., Kellermania, Alpakesa, Seimatosporiopsis. Parahyalotiopsis. Hyalotiella. Hyalotiopsis. Robillarda and Pseudorobillarda has been described and illustrated.

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18
STUDIES ON NUCLEI AND APPENDAGES IN SOME COELOMYCETES
S.Q. ABBAS, B.C. SUTTON* AND A. GHAFFAR**

STUDIES ON NUCLEI AND APPENDAGES IN SOME COELOMYCETES
ABSTRACT:
Number of nuclei and the nature, arrangement and number of appendages in 8 genera of Coelomycetes viz., Kellermania, Alpakesa, Seimatosporiopsis. Parahyalotiopsis. Hyalotiella. Hyalotiopsis. Robillarda and Pseudorobillarda has been described and illustrated.

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19
EFFECT OF FUNGICIDES ON THE EFFICACY OF RHIZOBIUM MELLOTI AND BRADYRHIZOBIUM SP., IN THE CONTROL OF ROOT INFECTING FUNGI ON CHICKPEA
IMRAN ALl SIDDIQUI, SYED EHTESHAMUL-HAQUE AND ABDUL GHAFFAR

EFFECT OF FUNGICIDES ON THE EFFICACY OF RHIZOBIUM MELLOTI AND BRADYRHIZOBIUM SP., IN THE CONTROL OF ROOT INFECTING FUNGI ON CHICKPEA
ABSTRACT:
Bradyrhizobium sp., with Benlate or Bavistin and Rhizobium meliloti isolates with Captan or Topsin-M showed better control of Fusarium solani infection on chickpea roots than their separate use. Bradyrhizobium sp., (Mungbean isolate) with Bavistin showed complete control of Macropbomina phaseolina infection, whereas Captan was found more effective against Rhizoctonia solani infection when used alone or with rhizobia. Maximum number of nodules per plant was produced by Bradyrhizobium sp., (TAL-620, chickpea isolate) used with Benlate or Bavistin. Some rhizobial isolates also significantly (p<0.05) enhanced plant height when used with Benlate, Bavistin or Topsin-M.

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20
EFFECT OF FUNGICIDES ON THE EFFICACY OF RHIZOBIUM MELLOTI AND BRADYRHIZOBIUM SP., IN THE CONTROL OF ROOT INFECTING FUNGI ON CHICKPEA
IMRAN ALl SIDDIQUI, SYED EHTESHAMUL-HAQUE AND ABDUL GHAFFAR

EFFECT OF FUNGICIDES ON THE EFFICACY OF RHIZOBIUM MELLOTI AND BRADYRHIZOBIUM SP., IN THE CONTROL OF ROOT INFECTING FUNGI ON CHICKPEA
ABSTRACT:
Bradyrhizobium sp., with Benlate or Bavistin and Rhizobium meliloti isolates with Captan or Topsin-M showed better control of Fusarium solani infection on chickpea roots than their separate use. Bradyrhizobium sp., (Mungbean isolate) with Bavistin showed complete control of Macropbomina phaseolina infection, whereas Captan was found more effective against Rhizoctonia solani infection when used alone or with rhizobia. Maximum number of nodules per plant was produced by Bradyrhizobium sp., (TAL-620, chickpea isolate) used with Benlate or Bavistin. Some rhizobial isolates also significantly (p<0.05) enhanced plant height when used with Benlate, Bavistin or Topsin-M.

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21
EFFECT OF SALINITY ON RHIZOBIUM SPECIES, NODULATION AND GROWTH OF SOYBEAN (GLYCINE MAX L.)
A. SHEREEN, R.ANSARI, S.S.M. NAQVI AND A.Q. SOOMRO*

EFFECT OF SALINITY ON RHIZOBIUM SPECIES, NODULATION AND GROWTH OF SOYBEAN (GLYCINE MAX L.)
ABSTRACT:
A pot experiment was conducted to observe the growth, nodulation and ion accumulation of salt tolerant and salt sensitive cultivars of soybean (Glycine max L.) when grown in symbiotic association with rhizobium in the absence of mineral nitrogen at different salinity levels (0.05, 0.1 and 0.2 % NaCl). The rhizobium strains pre-tested for salt tolerance were found more. tolerant than the host plants. Plants were inoculated with a mixture of rhizobial strains at the time of sowing in sterilized sand. Salts showed a greater inhibitory effect on nodulation at 0.1 % NaCI with decreased nodule number and weight than the plant growth. Soybean cultivar ICAL-132 showed better growth and produced more nodules by keeping low sodium in the shoot as compared to sensitive cultivar Loppa which failed to survive at 0.2 % NaCI. Salinity decreased potassium concentration in all cultivars tested, but this reduction was also less in ICAL-132. K:Na ratios showed similar trends. A highly positive correlation was observed between nodules and shoot dry weight.

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22
EFFECT OF SALINITY ON RHIZOBIUM SPECIES, NODULATION AND GROWTH OF SOYBEAN (GLYCINE MAX L.)
A. SHEREEN, R.ANSARI, S.S.M. NAQVI AND A.Q. SOOMRO*

EFFECT OF SALINITY ON RHIZOBIUM SPECIES, NODULATION AND GROWTH OF SOYBEAN (GLYCINE MAX L.)
ABSTRACT:
A pot experiment was conducted to observe the growth, nodulation and ion accumulation of salt tolerant and salt sensitive cultivars of soybean (Glycine max L.) when grown in symbiotic association with rhizobium in the absence of mineral nitrogen at different salinity levels (0.05, 0.1 and 0.2 % NaCl). The rhizobium strains pre-tested for salt tolerance were found more. tolerant than the host plants. Plants were inoculated with a mixture of rhizobial strains at the time of sowing in sterilized sand. Salts showed a greater inhibitory effect on nodulation at 0.1 % NaCI with decreased nodule number and weight than the plant growth. Soybean cultivar ICAL-132 showed better growth and produced more nodules by keeping low sodium in the shoot as compared to sensitive cultivar Loppa which failed to survive at 0.2 % NaCI. Salinity decreased potassium concentration in all cultivars tested, but this reduction was also less in ICAL-132. K:Na ratios showed similar trends. A highly positive correlation was observed between nodules and shoot dry weight.

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23
EFFECTS OF SEED TREATMENT WITH GROWTH HORMONES AND RHIZOBIUM ON THE OIL CONTENTS, NITROGEN FIXATION AND YIELD OF SOYBEAN
ZARRIN FATIMA AND ASGHARI BANO

EFFECTS OF SEED TREATMENT WITH GROWTH HORMONES AND RHIZOBIUM ON THE OIL CONTENTS, NITROGEN FIXATION AND YIELD OF SOYBEAN
ABSTRACT:
Effects of soaking seed with plant growth regulators viz., Indole acetic acid (IAA), Abscisic acid (ABA) and Kinetin each at 10-6 M on Glycine max (L) cv. NARC-1 was studied. Kinetin was found to be most effective in increasing the yield, oil as well as ash contents. Greater seed oil content were found in ABA and Kinetin treatment. Maximum ash contents and seed weight were found in Kinetin treated seed as compared to control. The absorbance for ethylene at 412 om of nodules was found to be significantly different from that of the control with maximum value recorded in Kinetin and minimum in IAA treated seeds.

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24
EFFECTS OF SEED TREATMENT WITH GROWTH HORMONES AND RHIZOBIUM ON THE OIL CONTENTS, NITROGEN FIXATION AND YIELD OF SOYBEAN
ZARRIN FATIMA AND ASGHARI BANO

EFFECTS OF SEED TREATMENT WITH GROWTH HORMONES AND RHIZOBIUM ON THE OIL CONTENTS, NITROGEN FIXATION AND YIELD OF SOYBEAN
ABSTRACT:
Effects of soaking seed with plant growth regulators viz., Indole acetic acid (IAA), Abscisic acid (ABA) and Kinetin each at 10-6 M on Glycine max (L) cv. NARC-1 was studied. Kinetin was found to be most effective in increasing the yield, oil as well as ash contents. Greater seed oil content were found in ABA and Kinetin treatment. Maximum ash contents and seed weight were found in Kinetin treated seed as compared to control. The absorbance for ethylene at 412 om of nodules was found to be significantly different from that of the control with maximum value recorded in Kinetin and minimum in IAA treated seeds.

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25
CARBON-ISOTOPE DISCRIMINATION IN WHEAT UNDER SALINE CONDITIONS
R. ANSARI, S.S.M. NAQVI, A.N. KHANZADA AND K.T.HUBICK*

CARBON-ISOTOPE DISCRIMINATION IN WHEAT UNDER SALINE CONDITIONS
ABSTRACT:
A study using 21 cultivars of wheat (Triticum aestivum L) and a salt tolerant barley (Hordeum vulgare L) showed significnat variation in ∆ (discrimination against 13C during photosynthetic CO2 - uptake) among cultivars and salinity levels. Salinity reduced straw, grain weight and the average value of ∆ in all the cultivars. The reduction caused by salinity varied among cultivars. Barley had larger values of ∆ than did wheat and there was a positive correlation between ∆ and production of straw (r = 0.36), grain (r = 0.44) and total biomass (r = 0.47).

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26
CARBON-ISOTOPE DISCRIMINATION IN WHEAT UNDER SALINE CONDITIONS
R. ANSARI, S.S.M. NAQVI, A.N. KHANZADA AND K.T.HUBICK*

CARBON-ISOTOPE DISCRIMINATION IN WHEAT UNDER SALINE CONDITIONS
ABSTRACT:
A study using 21 cultivars of wheat (Triticum aestivum L) and a salt tolerant barley (Hordeum vulgare L) showed significnat variation in ∆ (discrimination against 13C during photosynthetic CO2 - uptake) among cultivars and salinity levels. Salinity reduced straw, grain weight and the average value of ∆ in all the cultivars. The reduction caused by salinity varied among cultivars. Barley had larger values of ∆ than did wheat and there was a positive correlation between ∆ and production of straw (r = 0.36), grain (r = 0.44) and total biomass (r = 0.47).

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27
EXPRESSIVITY OF H2 GENE OF HAIRINESS AND L° GENE OF LEAF SHAPE OF COTTON UNDER DIFFERENT GENETIC BACKGROUNDS
HAFEEZ-UR-RAHMAN AND WAHEED SULTAN KHAN

EXPRESSIVITY OF H2 GENE OF HAIRINESS AND L° GENE OF LEAF SHAPE OF COTTON UNDER DIFFERENT GENETIC BACKGROUNDS
ABSTRACT:
The expressivity of H2 gene of hairiness (pilose) and L° gene of leaf shape in cotton (Gossypium hirsutum L) was studied in F1 and F2 generations of four crosses involving a female Okra Pilose strain (HR-Velvet Okra) and four broad leafed and semi/sparsely hairy varieties/strains of cotton. Both pilose and okra leaf shape of cotton plant were partially dominant in Fl generation. The F2 generations of all the four crosses segregated into four classes of hairiness as well as that of leaf shape. The summation of the two intermediate classes of leaf hairiness and shape helped to fit the segregating classes of three crosses to the theoretical 1 :2: 1 ratio of partial dominance. The two homozygous extreme classes of both the characters were easily distinguishable however, the heterozygous condition for hairiness was highly influenced by the genetic background i.e., modifying gene effect. It was perceptible from the study that hairiness and leaf shape in cotton though monogenically inherited, their phenotypic expressions especially in heterozygous conditions were affected by a complex.of modifier genes (genetic background) especially that for pubescence. Hairiness, as compared to leaf shape was more influenced by the minor (modifier) gene effect. Homozygous condition for both H2 and L° genes, however, imparts pilose hairiness and narrow okra leaf shape, respectively, without the aid of modifier genes. A significant level of genetic association (linkage) existed between H2 and L° genes in two crosses; HRVO x S-12 and HRVO x S-14, which was indicative of the higher number of velvet okra combi lation in the advance segregating generations of these crosses.

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28
EXPRESSIVITY OF H2 GENE OF HAIRINESS AND L° GENE OF LEAF SHAPE OF COTTON UNDER DIFFERENT GENETIC BACKGROUNDS
HAFEEZ-UR-RAHMAN AND WAHEED SULTAN KHAN

EXPRESSIVITY OF H2 GENE OF HAIRINESS AND L° GENE OF LEAF SHAPE OF COTTON UNDER DIFFERENT GENETIC BACKGROUNDS
ABSTRACT:
The expressivity of H2 gene of hairiness (pilose) and L° gene of leaf shape in cotton (Gossypium hirsutum L) was studied in F1 and F2 generations of four crosses involving a female Okra Pilose strain (HR-Velvet Okra) and four broad leafed and semi/sparsely hairy varieties/strains of cotton. Both pilose and okra leaf shape of cotton plant were partially dominant in Fl generation. The F2 generations of all the four crosses segregated into four classes of hairiness as well as that of leaf shape. The summation of the two intermediate classes of leaf hairiness and shape helped to fit the segregating classes of three crosses to the theoretical 1 :2: 1 ratio of partial dominance. The two homozygous extreme classes of both the characters were easily distinguishable however, the heterozygous condition for hairiness was highly influenced by the genetic background i.e., modifying gene effect. It was perceptible from the study that hairiness and leaf shape in cotton though monogenically inherited, their phenotypic expressions especially in heterozygous conditions were affected by a complex.of modifier genes (genetic background) especially that for pubescence. Hairiness, as compared to leaf shape was more influenced by the minor (modifier) gene effect. Homozygous condition for both H2 and L° genes, however, imparts pilose hairiness and narrow okra leaf shape, respectively, without the aid of modifier genes. A significant level of genetic association (linkage) existed between H2 and L° genes in two crosses; HRVO x S-12 and HRVO x S-14, which was indicative of the higher number of velvet okra combi lation in the advance segregating generations of these crosses.

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29
KARYOLOGICAL STUDIES IN SOME SPECIES OF HORDEUM L.
VAHIDY, A.A. AND B. JAHAN

KARYOLOGICAL STUDIES IN SOME SPECIES OF HORDEUM L.
ABSTRACT:
Karyological studies in Hordeum species viz., H. bogdanii (2x), H. brachyantherum ssp, californicum (2x), H. brevisubulatum (4x), H. brevisubulatum ssp. nevskianum (2x), H. brevisubulatum ssp. turkestanicum (4x), H. bulbosum (4x), H, chilense (2x), H. comosum (2x), H. depressum (4x), H. jubatum (2x), H. marinum (2x), H. murimum ssp, leporinum (4x), H. lechleri (6x), H. roshevitzii (2x), H. secalinum (4x), H. stenostachys (2x) and H. vulgare ssp. agriocrithon (2x) were made using aceto-orcein staining technique. Detailed morphological observations of chromosomes included total length, arm ratio and presence of satellites. The cytological technique employed gave good spread of chromosomes, an important prerequisite for karyotype analysis.

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30

KARYOLOGICAL STUDIES IN SOME SPECIES OF HORDEUM L.


ABSTRACT:
VAHIDY, A.A. AND B. JAHAN

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31
MORPHOLOGICAL ANATOMICAL AND PHYSIOLOGICAL STUDIES ON GALANTHUS lKARlAE BAKER AND G. RIZEHENSIS STERN (AMARYLLIDACEAE) GROWN AROUND NE TURKEY
NEVIN FERDA SAHIN

MORPHOLOGICAL ANATOMICAL AND PHYSIOLOGICAL STUDIES ON GALANTHUS lKARlAE BAKER AND G. RIZEHENSIS STERN (AMARYLLIDACEAE) GROWN AROUND NE TURKEY
ABSTRACT:
External morphological, anatomical and physilogical studies on Galanthus ikariae Baker and G. rizehensis Stem (Amaryllidaceae), the bulbous perennial plants collected from Trabzon, Turkey are described.

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32
MORPHOLOGICAL ANATOMICAL AND PHYSIOLOGICAL STUDIES ON GALANTHUS lKARlAE BAKER AND G. RIZEHENSIS STERN (AMARYLLIDACEAE) GROWN AROUND NE TURKEY
NEVIN FERDA SAHIN

MORPHOLOGICAL ANATOMICAL AND PHYSIOLOGICAL STUDIES ON GALANTHUS lKARlAE BAKER AND G. RIZEHENSIS STERN (AMARYLLIDACEAE) GROWN AROUND NE TURKEY
ABSTRACT:
External morphological, anatomical and physilogical studies on Galanthus ikariae Baker and G. rizehensis Stem (Amaryllidaceae), the bulbous perennial plants collected from Trabzon, Turkey are described.

117-131 Download
33
DISSEMINATION OF SEEDS OF ERYNGIUM PANICULATUM FROM ISOLATED PLANTS.I. RELATIONSHIP AMONG DIFFERENT TYPES OF SEED-TRAPS AND PLACEMENT HEIGHTS
SALVADOR CHAILA, MARIA T. SOBRERO* AND OLGA B. AVILA**

DISSEMINATION OF SEEDS OF ERYNGIUM PANICULATUM FROM ISOLATED PLANTS.I. RELATIONSHIP AMONG DIFFERENT TYPES OF SEED-TRAPS AND PLACEMENT HEIGHTS
ABSTRACT:
Three different plastic collectors of seeds of 18 x 23 x 4.5 cm from an isolated plant of Eryngium paniculatum (Apiaceae-Saniculoideae) were placed at 5 and 75 cm heights from the ground to test their efficiency. Plastic nets placed at 5 cm above the ground showed better results.

133-140 Download
34
DISSEMINATION OF SEEDS OF ERYNGIUM PANICULATUM FROM ISOLATED PLANTS.I. RELATIONSHIP AMONG DIFFERENT TYPES OF SEED-TRAPS AND PLACEMENT HEIGHTS
SALVADOR CHAILA, MARIA T. SOBRERO* AND OLGA B. AVILA**

DISSEMINATION OF SEEDS OF ERYNGIUM PANICULATUM FROM ISOLATED PLANTS.I. RELATIONSHIP AMONG DIFFERENT TYPES OF SEED-TRAPS AND PLACEMENT HEIGHTS
ABSTRACT:
Three different plastic collectors of seeds of 18 x 23 x 4.5 cm from an isolated plant of Eryngium paniculatum (Apiaceae-Saniculoideae) were placed at 5 and 75 cm heights from the ground to test their efficiency. Plastic nets placed at 5 cm above the ground showed better results.

133-140 Download
35
EFFECT OF A CONSTANT MAGNETIC FIELD TREATMENT OF DRY SEEDS OF WHEAT AND SUGARS ON THE GROWTH OF EXCISED COLEOPTILES
FARHAT AGHA AND M. ISHAQ KHAN

EFFECT OF A CONSTANT MAGNETIC FIELD TREATMENT OF DRY SEEDS OF WHEAT AND SUGARS ON THE GROWTH OF EXCISED COLEOPTILES
ABSTRACT:
Presowing treatment of dry wheat seeds to a constant magnetic field of 30 mT was found to promote the elongation of 24 hrs old wheat coleoptile tips. The growth of apical and basal segments of wheat coleoptiles were also promoted by 30 mT magnetized sucrose and maltose.

141-144 Download
36
EFFECT OF A CONSTANT MAGNETIC FIELD TREATMENT OF DRY SEEDS OF WHEAT AND SUGARS ON THE GROWTH OF EXCISED COLEOPTILES
FARHAT AGHA AND M. ISHAQ KHAN

EFFECT OF A CONSTANT MAGNETIC FIELD TREATMENT OF DRY SEEDS OF WHEAT AND SUGARS ON THE GROWTH OF EXCISED COLEOPTILES
ABSTRACT:
Presowing treatment of dry wheat seeds to a constant magnetic field of 30 mT was found to promote the elongation of 24 hrs old wheat coleoptile tips. The growth of apical and basal segments of wheat coleoptiles were also promoted by 30 mT magnetized sucrose and maltose.

141-144 Download
37
SALINITY TOLERANCE OF WHEAT THROUGH SEED TREATMENT WITH DILUTED AND POTENTIZED SODIUM CHLORIDE
M. ISHAQ KHAN AND FARIDA ASIM

SALINITY TOLERANCE OF WHEAT THROUGH SEED TREATMENT WITH DILUTED AND POTENTIZED SODIUM CHLORIDE
ABSTRACT:
Sodium chloride is known to inhibit the mitotic activity (Kuliava et al.

145-149 Download
38
SALINITY TOLERANCE OF WHEAT THROUGH SEED TREATMENT WITH DILUTED AND POTENTIZED SODIUM CHLORIDE
M. ISHAQ KHAN AND FARIDA ASIM

SALINITY TOLERANCE OF WHEAT THROUGH SEED TREATMENT WITH DILUTED AND POTENTIZED SODIUM CHLORIDE
ABSTRACT:
Sodium chloride is known to inhibit the mitotic activity (Kuliava et al.

145-149 Download
39
PHYTOPHTHORA SYRINGAE CAUSING CROWN AND ROOT ROT DISEASE OF APPLE IN MALAKAND DIVISION, PAKISTAN
JAHANGIR

PHYTOPHTHORA SYRINGAE CAUSING CROWN AND ROOT ROT DISEASE OF APPLE IN MALAKAND DIVISION, PAKISTAN
ABSTRACT:
Phytophthora crown and root rot disease of apple is widespread in most apple growing areas of Malakand Division, Pakistan where Phytophthora cactorum and Phytophthora spp., have been reported from infected plants of apple orchards and nurseries (Jahangir et al.

151- Download
40
PHYTOPHTHORA SYRINGAE CAUSING CROWN AND ROOT ROT DISEASE OF APPLE IN MALAKAND DIVISION, PAKISTAN
JAHANGIR

PHYTOPHTHORA SYRINGAE CAUSING CROWN AND ROOT ROT DISEASE OF APPLE IN MALAKAND DIVISION, PAKISTAN
ABSTRACT:
Phytophthora crown and root rot disease of apple is widespread in most apple growing areas of Malakand Division, Pakistan where Phytophthora cactorum and Phytophthora spp., have been reported from infected plants of apple orchards and nurseries (Jahangir et al.

151- Download
41
OCCURRENCE OF GERLACHIA ORYZAE (HASHIOKA & YOKOGI) W. GAMS (SYN. RHYNCHOSPORIUM ORYZAE HASHIOKA & YOKOGI) ON RICE SEEDS IN PAKISTAN
S.A. JAMIL KHAN, M. JALALUDDIN* AND A. GHAFFAR*

OCCURRENCE OF GERLACHIA ORYZAE (HASHIOKA & YOKOGI) W. GAMS (SYN. RHYNCHOSPORIUM ORYZAE HASHIOKA & YOKOGI) ON RICE SEEDS IN PAKISTAN
ABSTRACT:
Geriachia oryzae (Hashioka & Yokogi) W. Gams (Syn. Rhynchosporium oryzae Hashioka & Yokogi), a dematacious fungus is wide spread in the rice growing areas of the world (Baker & Miah

153-154 Download
42
OCCURRENCE OF GERLACHIA ORYZAE (HASHIOKA & YOKOGI) W. GAMS (SYN. RHYNCHOSPORIUM ORYZAE HASHIOKA & YOKOGI) ON RICE SEEDS IN PAKISTAN
S.A. JAMIL KHAN, M. JALALUDDIN* AND A. GHAFFAR*

OCCURRENCE OF GERLACHIA ORYZAE (HASHIOKA & YOKOGI) W. GAMS (SYN. RHYNCHOSPORIUM ORYZAE HASHIOKA & YOKOGI) ON RICE SEEDS IN PAKISTAN
ABSTRACT:
Geriachia oryzae (Hashioka & Yokogi) W. Gams (Syn. Rhynchosporium oryzae Hashioka & Yokogi), a dematacious fungus is wide spread in the rice growing areas of the world (Baker & Miah

153-154 Download
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