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Year 1991 , Volume 23, Issue 2
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S.No. |
Title |
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Pages |
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1 |
SEASONAL EGG LIBERATION
AND POTENTIAL OUTPUT OF HORMOSIRA BANKSIIMUBINA BEGUM
F.J.TAYLOR
SEASONAL EGG LIBERATION
AND POTENTIAL OUTPUT OF HORMOSIRA BANKSII ABSTRACT: Seasonal variation and potential output of
egg liberation in the fucalean species Hormosira banksii (Turner). Decaisne was investigated. Eggs were produced throughout the year but the reproductive capacity was seasonal. A good liberation of eggs was observed from July-October (winter to early spring) when the mean sea water temperature was 14oC where eggs produced were healthy, morphologically as
well as physiologically and fertilization in the laboratory showed a high synchrony. Liberation of eggs was low at high temperature (17.5-22oC)during December to February and most of the eggs were apparently not healthy often disintegrated when released from the conceptacles and viability of the eggs was also low with abnormal growth.
| 145-151 |
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2 |
PEDIASTRUM BAREILLIANSIS A
NEW SPECIES IN INDIAIQBAL HABIB, U.K.
CHATURVEDI AND U.C. PANDEY
PEDIASTRUM BAREILLIANSIS A
NEW SPECIES IN INDIA ABSTRACT: Pediastrum bareilliansis sp. nov., collected
from Dhopa pond, Bareilly District, U.P India is described.
| 152-154 |
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3 |
OCCURRENCE OF ALGAE IN
INDUSTRIAL WASTE WATER AROUND KARACHIK. AISHA AND PHOOL
B. ZAHID
OCCURRENCE OF ALGAE IN
INDUSTRIAL WASTE WATER AROUND KARACHI ABSTRACT: Waste water samples of Korangi industrial
and SITE areas showed the occurrence of 43 algal species belonging to 39 genera and 4 divisions, in which Mycrocystis flos-aquae, Phormidium purpurascens and Chlamydomonas oblonga were dominant. This is the first report of the occurrence of Chryosophyta from Pakistan.
| 155-159 |
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4 |
Effect of vegetative incomtibility on double stranded RNA and mycovirus transmission In gaeumannomyces graminis var. triticiNusrat jamil and
K.W. buck
Effect of vegetative incomtibility on double stranded RNA and mycovirus transmission In gaeumannomyces graminis var. tritici ABSTRACT: The vegetative incompatibility of gaeumannomyces graminis ( wheat plant pathlogen) was examined by physical interacrion of field isolates on potato dextrose agar. Due to multi-alaelic system
31 isolates of gaeumannomyces graminis var. tritici. Were divided into 18 vegetative incvompatibility (V.C) groups. The genetic mechanism of of somatic incompatibility appears to be heterogenic . fusion incompatibility was rarely found. The dsRNA components from these isolates belonged to different V-C group e.g. 38 (V- Cgroup A) and 43 (V-C group B) are of the same size. Similarly dsRNA components from isolates 87-1 ( V-Cgrouop F) and isolates 83 (V-C group G) have same size range . the close similarity of the dsRNA present in isolates from diferetn V-C group suggests that somatic incompatibility cannot restrict the ransmission of virus or viral genome (dsRNA ).
| 160-164 |
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5 |
Seed-borne mycoflora of
coriandrum sativum L.M.H. HASHMI AND A.
GHAFFAR
Seed-borne mycoflora of
coriandrum sativum L. ABSTRACT: Seed samples of coriander from 15
countries were analysed for seed-borne mycoflora . of the 88 sasmples examined ,
14 genera and 24 species of fungi were
| 165-172 |
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6 |
Detection of the seedborne mycoflora of sunflowerShahnaz dawar and A. ghaffar
Detection of the seedborne mycoflora of sunflower ABSTRACT: Using blotter , agar plate and deep-freezing methods as recommended by ISTA , the seedborne mycoflora of sunflower was shown to consist of 20 different genera 36 species of fungi . more fungi were isolated by the blotter method followed by agar
plate and the deep-freezing method. Variety HO-1 showed highest fungal colonization among the 20 samples testd. The
pathogenic species included rhizoctonia solani Kuhn, macrophomina phaseoline (tassi) goid, fusarium moniliforme Sheldon , F. solani(mart). Appel and wollenw,, F/semitectum berk. And Rav., F. equiseti (corda ) sacc., drechslear state of cochliobohus spicifer nelson , alternaria alternate (Fr) keissier , A. teruissima ( kunze
| 173-178 |
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7 |
Effect of microbial antagonisis in the control of root rot of tomatoShahida perween and
A. ghaffar
Effect of microbial antagonisis in the control of root rot of tomato ABSTRACT: Seed treatment with microbial antagonisis viz., trichoderma harzianum , gilocladium virens , paecilomyces lilacinus , rhizobium meliloti and Streptomyces sp., completely controlled infection of tomato rots by fusarium oxysporum in 30 and 120 day old plants. Against macrophomina phaeolina the effectiveness of microbial antagonisis declined with time and only gliocladium viruses was able to reduce M. phaseolina infection after 120 days of treatment . higher germinated of seeds, fresh weight , shoot length and plant lengt at all intervals as compared to control was observed in paecilomyces lilacinus and rhizobioum melilotic treatments followed by glicladium virens , trichoderma harziaderma and Streptomyces sp.
| 179-182 |
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8 |
Effect of seed treatment with
biological antagonisis on rhizosphere mycoflora and root infecting fungi of soybeanFarzana ali and A.
ghaffar
Effect of seed treatment with
biological antagonisis on rhizosphere mycoflora and root infecting fungi of soybean ABSTRACT: Treatment of soyean seeds with
paecilomyces lilacinus , trichoderma harzianum , glicladium virens , bacilhus subtilis , rhizobium metolic and Streptomyces sp., showed significant reduction in infection of root by root infecting fungi on 30 and 60 day old palnst . the effectiveness of microbial antagonisis
| 183-188 |
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9 |
Analysis of resistance I sunflower to charcoal rot pathogen macrophomina phaseolinaI. AHMAD , K. BURNEY AND M. ASLAM
Analysis of resistance I sunflower to charcoal rot pathogen macrophomina phaseolina ABSTRACT: Four sunflower hybrids viz., NK-212 , Cargill-
204 , SF-100 and hysun-30 were tested for
disease resitance against 26 isolates of macrophomina phaseolina collected from sunflower growing areas in Pakistan. Stem inoculations were made using a tooth-pick and spread of charcoal rot was measured from the point of inoculation. Disease reaction was scored on a 0 to 5 scale ; where 0= no rot and 5= plant death. Resistance was characterized using analysis of variance . a highly significant main effect
for both varieties and isolates was detected
. this indicated a highly significant
difference in horizontal resistance between varieties and in aggressivieness between
the isolates however, the interaction varieties x isolates was nosignificant , indicating no evidence of vertical resistance.
| 189-193 |
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10 |
Biological control of rot rot
disease of mustardS. ehteshamul-haque
and A. ghaffar
Biological control of rot rot
disease of mustard ABSTRACT: Infections of macrophomina phaseolina on
30 day old mustard 9 brassica juncea ) seedling was inhibited by brodyrhizobium japonicum , trichoderma harzianum , glicladium virens and paecilomyces bilocinus when used as seed decreasing or as soil drench , while on 60 day old palnts.
| 194-198 |
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11 |
Error free repair of alkylated
DNA in staphylococcus aureusS.A. RASOOL AND A.
RASHID
Error free repair of alkylated
DNA in staphylococcus aureus ABSTRACT: The adaptive repair activity has been
demonstrated in cells of straphylococcus aureus, reactivation of alkylated phage p68 has been shown to be dependent upon the host cell coded adaptive repair enzymes of the adapted S. aureus cells. In vitro biochemical studies have indicated the nitroguanidine (MNNG) adapted synthesis of al;kyltransferase . however, DNA glycosylase activity has been insignificant.
| 199-202 |
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12 |
IB/IR translocation wheat
ciltivars detected by A-page electrophoresis and C- banding in the 1990 national uniform wheat yield trial in PakistanNitschika ter-kuile ,
qamar jahan, N. hashmi, M. aslam ,, A.A. vahidy and A. mujeeb-kazi
IB/IR translocation wheat
ciltivars detected by A-page electrophoresis and C- banding in the 1990 national uniform wheat yield trial in Pakistan ABSTRACT: Bread wheat (triticum aestivum L.) yield trial
nurseries comprised of a large proportion of lines with the IB/IR translocation that has associated with it sesveral positive agronomic and pathological attributes . thirty eight entries were evaluated in three categories (i.e. normal , short and rainfed)
in the 1989-90 national uniform wheat
| 203-212 |
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13 |
Production and cytogenetics
of intergeneric hybrids of triricum aestivum with aegilops variabilis and AE. vaviloviAhsan A. vahidy , F.A.
durrani , qamar jahan and A. mujeeb-kazi
Production and cytogenetics
of intergeneric hybrids of triricum aestivum with aegilops variabilis and AE. vavilovi ABSTRACT: Intergeneric hybrids between triricum
aestivum L., and karnal bunt ( neovossia indica) resistant accessions of two aegilops spaecies were produced in different frequencies . aegilops variabilis was hybridized with genaro 81, Mri-buc āSā.
Buc-pvn āSā and chineese spring at frequencies of 5.0 to 29.0 % . the endosperm formation was normal , mature seeds were slightly shriveled but germinated normally . the T. aestivum x Ac
. variabilis hybrids , genomically represented as ABDUS , were cytologically normal , with
2n=5x=35 chromosomes . the mean meiotic
association at metaphase-1 were categorized as low pairing and expressed as 33.96 univalents + 0.52 rod bivalents over 56 meiocytes analysed with a 0.52 mean chiasmata frequency . hybrid
| 213-222 |
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14 |
Effect of salinity on growth
and nutrient content of pearl millet grown in desert sand and gravelS.M. ALAM AND
S.S.M. NAQVI
Effect of salinity on growth
and nutrient content of pearl millet grown in desert sand and gravel ABSTRACT: Sand or gravel culture techniques were
used ti study the effect of saline irrigation water on the growth and nutrient contents of pearl milles . plant height and dry matter yield significantly decreased with
increase in salinity levels. Salinity caused an increase in N.P, Ca , Na , Fe, and Mn and decrease in K content of the leaves.
| 223-226 |
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15 |
Total phenolics , phenyl
alanine ammonia lyase and polyphenol oxidase in in vitro calli of chick-peaJaved iqbal , shagufta
naz , sarwat nazir , faheem aftab and M.S. ahmed
Total phenolics , phenyl
alanine ammonia lyase and polyphenol oxidase in in vitro calli of chick-pea ABSTRACT: Conditions for in vitro cultures of calli from
root , cotyledon and hypocotyl explants of chickpea (cicer ariethinum L. cv CM 72) in M.S. medium were established . total phenolics , phenylalanine ammonia-lyase (PAL) and polyphenol oxidases (PPO) were estimated quantitatively from main callus to
6th sub-culture . the activity of PAL and PPO
showed a linear increase upto third sub-
culture and then a remarkable decrease from fourth to sixth sub-culture was observed . the data of phenolices was not
| 227-235 |
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16 |
Siderinium pitensis sp. Nov.,
a new species of silicified fossil dicot wood from tertiary deposits of Sindh , pakistanBasir ahmed ,
Muhammad tahir M. Rajput and khursheed Mustafa khan
Siderinium pitensis sp. Nov.,
a new species of silicified fossil dicot wood from tertiary deposits of Sindh , pakistan ABSTRACT: Siderinium pitensis sp. Nov a new silicified
stem fossil is described from tertiary rocks of dada dormation exposed near ranikot fort area , district dadu , Pakistan . the xylotomical features of the present fossil wood show close affinities with the genus sideroxylon of the family sapotaceae.
| 236-242 |
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17 |
Composition and variation of
essential oil constiuents in three menthal ., ) labiate) species in YugoslaviaN.M. DUKC , S.Z.
HUSAIN , R. JANCIC , O.GASIC , A. LOUKIS AND M.B. KHAN
Composition and variation of
essential oil constiuents in three menthal ., ) labiate) species in Yugoslavia ABSTRACT: The essential oil components piperitone ,
linalool, menthol , geraniol , limonene, carvone, pulegone , caryphyllene ,
menthone , isomenthone , meoismenthone , P. cymene , borneol , piperitnone an a terpinene were determined by GL.C in 3 wild species of the genus menthe collected from the river Danube ravine north east of Yugoslavia . considerable variation was observed among some essetntial oil components ; commercially this variation could be useful.
| 243-248 |
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18 |
Some autecolological
observations on catharanthus roseus (L.) G.DONS.M. CHAGHTAI ,
MOHAMMAD IBRAR AND QAISER ALI
Some autecolological
observations on catharanthus roseus (L.) G.DON ABSTRACT: Germination and growth of catharanthus
roseus seeds were found directly related to temperature. Scartification of seeds retarded germination and growth of seedlings . germination and growth of seeds soaked in water at 300 C for 2h significantly increased in longer incubation periods . C roseus was extremely sensitive to salinity . loam soil gave maximum germination and growth . partial sunlight and complete
| 249-256 |
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19 |
Contribution to the flora of
Saudi Arabia part II. A revision of the family solanaceaeSultanul abedin ,
mohammad A. al- yahya , shaukat ali chaudhary and jaber salem mossa
Contribution to the flora of
Saudi Arabia part II. A revision of the family solanaceae ABSTRACT: The family solanaceaea in the kingdom os
Saudi Arabia has been revised . it is represented by 43 taxa distributed in 11 genera (including 12 cultivated species ).. two new status viz., solanum incanum L. var. uniguicularum (A. Rich ) abedin , al-yahya, chaudhary and mossa and withania somnifera (L.) dun subsp obrusfolia (Tackh.) abedin , al-yahya, chaudhary and mossa
has been suggested and five taxa recorded for the first time are solanum augivi Lam., S. cordarum forsk ., Sekeagiifollium Cav., withania somnifera (L) dun. Subsp,obrusfolia (Tackh). Abedin , al-yahya, chaudhary and mossa and datura ferox L. there is an increase of 5 genera with 27 taxa and 6 genera with 22 taxa respectively against previous reports (migahid, 1978; collenatte,
1985). Key to genera, species their descrptions and geographical distribution are given .
| 257-282 |
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20 |
Anti-page Mu activity and
mutagenicity of extra cellular peptides of candida tropicalisTashmeem F. razzaki,
M. ali , F. nahid , A. abbasi and Z.H. zaidi
Anti-page Mu activity and
mutagenicity of extra cellular peptides of candida tropicalis ABSTRACT: Genetic activity of peptides isolated rom
cell-free culture filterate of dimorphic yeast candida tropicalis (strain CBS94) was investigated in salmonella/ microsome revesion assay . the peptides induced either base-pair substitutions or frame-shift mutagenesis and one of this promoted
both kind of mutations. A peptide also
inhibited Mu induced lysis of Escherichia coli, indicating that the peptide could interfere with the growth of a bacterial
| 283-289 |
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21 |
A new species of rochelia
(boraginaceae) from pakistanY. nasir
A new species of rochelia
(boraginaceae) from pakistan ABSTRACT: While studying the rochelia material for the
flora of Pakistan , one gathering namely Bowes lyon ,789, from chitral could not be matched entirely with any of the species found in Pakistan. The gathering was tentatively placed under R. laxa. On further examination this gathering proved to ba a new species.
| 290-290 |
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