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Year 1988 , Volume 20, Issue 2
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S.No. |
Title |
Authors |
Pages |
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1 |
Studies in the
family gentianaceae: the genus aloitis rafin . from Pakistan and Kashmir.Saood omer,
M.qaiser and
S.I. ali
Studies in the
family gentianaceae: the genus aloitis rafin . from Pakistan and Kashmir. ABSTRACT: The genus alotis rafin . is recognized from
Pakistan . six new combinations are proposed : A. falconeri (Clarke) omer. Qaiser and ali ; A. maddeni (Clarke) omer , qaiser and ali ; A. moorcroftiana ( wall ex G. don) omer., qaiser and ali ;A. umbellate (M.bieb0. omer , qaiser and ali A.
holosteoids (Pritchard) omer, qaiser and ali and A. stoliczkai (Clarke) omer, qaiser and ali.
| 153-160 |
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2 |
A palynologocal
study of the family gramineae from Karachi- pakistan.Tahmeena
siddiqui and
M.qaiser
A palynologocal
study of the family gramineae from Karachi- pakistan. ABSTRACT: A palynological study of 64 species
belonging to 40 genera of the family gramineae from Karachi was conducted . the family is stenopalynous and the pollen are spheroidal , usually monoporate,
rately diporate, smooth , mostly annulate
and operculate . on the basis of sculpturing pattern 3 groups are
recognized viz, (i) areolate, (ii) scabrate (iii) scabrate-areolate. Each group is further divided on the basis of proximity of the granules (scabrae). Various quantitative characters were also statistically tested.
| 161-176 |
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3 |
A contribution to
the chromosome numbers of compositae from pakistanZeenat abdul
razaq, surayya khatoon and S.I. ali
A contribution to
the chromosome numbers of compositae from pakistan ABSTRACT: Chromosome counts are reported for 32
species belonging to 23 genera (in 8 tribes) of the family compositae from Pakistan . of these, counts for 4 taxa viz, lactuca remotiflora DC, pluchea arguta boiss ., puliccaria boissieri hook , f. and pulicaria hookeri jafri are new to science.
| 177-189 |
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4 |
Cytological investigation ib abutilon mill., from pakistanS. afaq-
Husain , viqar anjum saeed and S. shahid- husain
Cytological investigation ib abutilon mill., from pakistan ABSTRACT: Chromosome numbers are reported for 12 species of abutilon mill, from Pakistan of which four species are cytologically investigated for the first time viz., A. alii S. abedin (n=21), A. figarianum webb (n=21), A. karachianum S.A. hus. & S.R. Baq .(n=21), and A. pakistanicum jafri and Ali (n=21,2n=42)
| 191-199 |
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5 |
Investigation of
genotype X environment interaction for seed yield in chickpea ( cicer arietinum L.)Imtiaz ahmed
khan, bashir ahmed malik and mohammed bashir
Investigation of
genotype X environment interaction for seed yield in chickpea ( cicer arietinum L.) ABSTRACT: The stability analysis in 14 genotypes for
seed yield of chickpea was response of G X E interaction was evaluated . the linear component of interaction was more important than non linear component. CM
72 and C 44 , being high yielding and less
susceptible to the changes in the environment, were found to be most suitable and adaptable genotypes.
| 201-204 |
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6 |
Allelopathic
potential of senesced anthers of bombax ceiba L., inhibiting germination and growth of
lettuce seedsM. ishaq khan
and bushreen jahan
Allelopathic
potential of senesced anthers of bombax ceiba L., inhibiting germination and growth of
lettuce seeds ABSTRACT: Aqueous extracts ant leachates from
senesced anthers of bombax ceiba L., was tested for its effect on seed germination and seedling growth of lettuce . the inhibitors isolated from anthers were water soluble and its germination inhibiting activity increased with rise in temperature from 20+- 1 to 26 +-20C. paper chromatographic separation of
acidic ethyl acetate fraction of the aqueous
| 205-212 |
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7 |
Phytotoxicity of silybum marianum gaertn ., on wheatS.M. chaghtai
, abdus sadiq and jehandar shah
Phytotoxicity of silybum marianum gaertn ., on wheat ABSTRACT: Allelopathic effect of Silybum marianum gaertn , was studied in laboratory and field experiments . the aqueous extracts from different plant parts sognificantlt inhibited seed germination and radicle growth of triticum aestivum L. cv. Blue silver . the toxicity varied from part to part and was related to concentration , soaking duration and the freshness of the plant material assayed . stem exudates were highly toxic followed by leaves, inflorenscence and
the roots. Leachates from fruit and fruit
parts did not show toxicity . interference test confirmed the capability of weeds in relating the growth of wheat in mixed roots cultures. In field , decomposing litter from S. marianum showed significant reduction of height , length of 3 top intermodes , length of earhead . dry biomass and number of grains per earhead of wheat.
| 213-220 |
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8 |
Effect of GA3 on shoot proliferation in different date palm varieties.ATA-UR- REHMAN , HAMID RASHID, AZRA QURESHI AND ISAAC JOHN
Effect of GA3 on shoot proliferation in different date palm varieties. ABSTRACT: Shoot tips excised from apical and axillary buds of date palm varieties dhakki, khudrawi and zahidi showed shoot proliferation on MS medium supplemented with GA3 where complete plantlets were obtained only in cv., dhakki.
| 221-225 |
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9 |
Physiological
differences in germinating wheat seeds due to seed sourceShahbaz
ahmad and Floyd E. Bolton
Physiological
differences in germinating wheat seeds due to seed source ABSTRACT: Seedlings of 18 winter wheat cvarieties
produced at 2 distinctly locations, were compared for physiological differences during germination . varities were significantly different (P=0.01) from each other for seeding axes weight , alpha- amylase and glutamine synthetase activities and soluble protein of seedling axes and endosperm. Corvallis source seed was superior to moro source seed for seeding axes weight and endosperm soluble protein while the reverse was true for alpha-amylase and glutamine
synthetaes activities , and seeding axes soluble protein . enzyme activity increased in moro source seed due to environmental stress but corvallis source seed was better for total and soluble reserves in the endosperm . higher quantity of total and soluble protein in the endosperm over- shadowed the benefit of better enzyme activity for seedling growth . both
genotype and environment affected the seed physiological properties . the interaction between varieties and seed source was significant.
| 227-231 |
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10 |
Seed-borne
mycoflora of trigonella
foenum-graecum
L.M.H. HASHMI
Seed-borne
mycoflora of trigonella
foenum-graecum
L. ABSTRACT: Seed samples of trigonella foenum-
graecum (fenugreek) obtained from 7 countries were analyzed for seed-borne mycoflora . of the 23 samples examined , the samples from Pakistan showed maximum infection of seed-borne fungi alongwith unidentified yeasts and bacteria
. fungi isolated were : alternaria alternaria ,
| 233-237 |
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11 |
Etection and
location of seed- borne fungi in sorghum sed.Nasreen
sultana, S.A. jamil khan and A.K. khanzada
Etection and
location of seed- borne fungi in sorghum sed. ABSTRACT: Using ISTA techniques , 27 species of fungi
were isolated from 6 varieties of sorghum seed. Deep freezing method was found superior to the standard blotter and agar plate methods for the detection of fusarium spp., drechslera spicifera and curvularia lunata. Seed components showed infection of alternaria alternata , curvularia lunata , drechslera spicifera , D. hawaiiensis , fusarium moniliforme and F. semitectum but F. moniliforme was frequently recorded in the embryo.
| 239-244 |
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12 |
Inactivation of sclerotia of macrophomina phaseolina under paddy cultivatinmohammad javed zaki and abdul ghaffar
Inactivation of sclerotia of macrophomina phaseolina under paddy cultivatin ABSTRACT: Viability of sclerotia of macrophomina phaseolina was examined in field under paddy cultivation for two consecutive years. After 12 weeks sampling, number of sclerotia were eliminated from surface and 20 cm depth at rice research
| 245-250 |
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13 |
Spore survival ,
germination and sporeling growth of penicillium expansum in soilMiandad
zardari and
D.D. clarke
Spore survival ,
germination and sporeling growth of penicillium expansum in soil ABSTRACT: Conidia of penicillium expansum did not
germinate in natural soil but remained viable (68%) for upto at least one year . in autoclaved soil, however, conidia germinated to develop and form conidia microcyclically.
| 251-257 |
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14 |
Antifungal
properties of plant leaf decoctions against leaf rust of wheat.M.H. rahber-
bhatti
Antifungal
properties of plant leaf decoctions against leaf rust of wheat. ABSTRACT: Leaf decoctions of 16 phanerogams were
tested against leaf rust of wheat. Decoctions of acacia nilotica, calatropis procera, datura stramonium , dodonaea viscosa and rhazya stricta effectively controlled the rust on detached leaves of wheat whereas cassia senna enhanced germination of urediniospores.
| 259-263 |
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15 |
Assessment of
possible mutagenicity of betel leaf in saccharomyces cerevisiaeS.R. chughtai ,
akbar S. mohmand and B.A. siddiqi
Assessment of
possible mutagenicity of betel leaf in saccharomyces cerevisiae ABSTRACT: Aqueous extract of betel leaf was tested
for the induction of mitotic gene conversion, mitotic crossing over and reverse mutation in diploid strains of saccharomyces cerevisiae . tests performed with stationary and log phase cells showed that betel leaf extract was non-mutagenic in yeasts without metabolic activation . it failed to increase the frequency of convertants , recombinants and revertants. Betel leaf extract neither caused cell killing nor inhibition of cell divisions . EMS, used as control , exhibited mutagenic and recombinogenic activity.
| 265-272 |
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16 |
The effect of
carbetamide herbicide on pigment contents , carbohydrate and nitrogen levels and 14CO2
–
photoassimilation in chlorella vulgarisM.E.H.
OSMAN, M.E. YOUNIS AND A.I. SOLIMAN
The effect of
carbetamide herbicide on pigment contents , carbohydrate and nitrogen levels and 14CO2
–
photoassimilation in chlorella vulgaris ABSTRACT: Treatments of chlorella vulgaris with
carbetamide (-1-(ethylcarbamyol) ethyl phenyl carbamate) induced changes in pigment content , 5 ppm showed considerable increase in pigment content
, when 25 and 50 ppm induced bleaching after 5 and 7 days , respectively . thereafter , a remarkeable re-greening of these cultures was observed . carbetamide treatment reduced
carbohydrate components associated with an increase in nitrogen component at high concentration of the herbicide. Carbeta mide induced changes in the pattern of
14CO2-photoassimilation. A significant
increase in the ratio of soluble/insoluble
products was obtained , this being indicative that the rate of transformation of soluble to insoluble photosynthates
| 273-283 |
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17 |
A platymonas
bloom in coastal waters of Jeddah
, Saudi arabiaS.M.
SAIFULLAH , A.S. MANDURA AND A.K. KHAFAJI
A platymonas
bloom in coastal waters of Jeddah
, Saudi arabia ABSTRACT: A dense greem bloom of platymonas
intermedia nasr was observed in coastal waters of Jeddah , Saudi Arabia in close vicinity to the point of discharge of city’s sewage with cell counts as hih as 38 million cells/I. the species appeared to be first record from the red sea area bordering Saudi Arabia.
| 285-289 |
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18 |
Distribution of and some ecological notes of phaeophyta from the coast of karachiMubina begum and naushaba khatoon
Distribution of and some ecological notes of phaeophyta from the coast of karachi ABSTRACT: During taxonomical and ecological survey of phaeophyta from the coast of Karachi,
17 genera and 48 species including 10 genera and 29 species as new records were found in Ectocarpales , dictyotales , punctariales and fucales. Members of dictyotales were predominant.
| 291-304 |
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19 |
Some algal
microfossils isolated from sonda coal deposits , thatta district , sind, pakistanM.A. SAHITO,
Z.A. NIZAMANI AND S.M. LEGHARI
Some algal
microfossils isolated from sonda coal deposits , thatta district , sind, pakistan ABSTRACT: Unicellular , colonial and filamentous forms
of algae represented by cephalia globate, coelastrum cambricum , dinogymnium acuminatum , pinnularia denticulate . sp. Nov., stichococcus bacillaris, myxococcoides muricata and synechococcus aeruginosus chaetomorpha akineta sp.nov.,
| 305-309 |
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