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Year 1989 , Volume 21, Issue 1
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abstract of the paper
S.No. |
Title |
Authors |
Pages |
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1 |
Combining ability
estimates of some tester lines used onto cytoplasmic male sterile cottonBarkat ali
soomro, ali Hassan baloch ad abdul
razaq soomro
Combining ability
estimates of some tester lines used onto cytoplasmic male sterile cotton ABSTRACT: Three cytoplasmic male sterile lines of
cotton and six hirsutum ono-restore pollinators were used as tester lines on to CMS parents to study the general and specific combining ability parameters for yield of seed cotton, seed index , lint index, ginning outumn percentage and staple length . of tht tester lines used , K-
68/9 was observed to be the best combiner for yield of seedcotton and therefore was considered suitable for converting it into restore parent to be utilized in hybrid cotton development programme. Per se performance of hybrids for yield of seedcotton was correlated with specific combining ability ffects but the correlation did not hold good with respect to seed index , lint index, g.o.t.% and staple length. Generally the GCA of a tester line was not correlated with the SCA of a hybrid for all the characters. GCA effects were more pronounced with respect to yield , as compared to SCA effects , and therefore selection has been advocated on the basis of GCA’s of the tester lines.
| 3-12 |
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2 |
Changes in nucleic acid content , peroxidase content and its isozymic forms in in vitro propagated of chickJaved iqbal , nadira butt, farah saeed and M.S. ahmad
Changes in nucleic acid content , peroxidase content and its isozymic forms in in vitro propagated of chick ABSTRACT: Culture were developed to facilitate callus inducation by seeds and from explants of shoot tip, root tip, node and leaf of chick pea, cicer arietinum L. cv. CM
72. DNA RNA content and peroxidase activity of calli raised from seeds showed
| 13-23 |
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3 |
The role of medium
composition and light intensity on in vitro root formation of strawberryM.sarwar
The role of medium
composition and light intensity on in vitro root formation of strawberry ABSTRACT: In vitro propagated strawberry shoots
were subjected to in vitro rooting under different BA levels, types of media, incubation temperatures and light intensities . root formation started within
10 days of culture undr high light intensity of 13.5W.m-2. In vitro rooting of strawberry shoot tips occurred redily on inorganic salts of murashige and skoog medium . the extent of root formation was directly related to sucrose and light intensity. No root formation occurred in the dark , under low light and in sucrose free medium. BA upto 1 um did not inhibit root formation . addition of
| 24-30 |
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4 |
Regulations of
pollen germination and tube growth of different parts of catharanthus roseus L.Samina rauf
and M. ishaq khan
Regulations of
pollen germination and tube growth of different parts of catharanthus roseus L. ABSTRACT: Alcoholic extract of vegetative and
reproductive parts of catharanthus roseus was tested for substances responsible for germination and growth of pollen tube of the same plant. Several promoters and inhibitors of pollen germination and tube growth were detected in extracts of anthers , stigma, style and ovary. In the ovary extract no pollen tube growth promoter was found. The major differences in the quality of the growth regulators dependent on the type of tissue tested. Extracts of leaf , young fruit, mature fruits and seeds contained compounds which inhibited the pollen germination and the tube growth of C. roseus . the Rf value of the inhibitors differed according to the tissue used . no promoter was found in any of these extracts.
| 31-37 |
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5 |
Acid phosphate and
adenosine triphosphatase from plant latticesMarimuthu ,
indravandan Kothari ND BHARGAVI SHUKLA
Acid phosphate and
adenosine triphosphatase from plant lattices ABSTRACT: Fifteen plant lattices of the families
apocynaceae , asclepiadaceae and sapotaceae have been investigated for the presence of acid phosphatase and adenosine triphospahatse enzymes. The lattices studied possess both acid phosphatase and adenosine triphosphatase enzymes. One of the richest sources of enzymes was from the
| 38-42 |
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6 |
Studies on
photosynthetic rates and species composition of an epilithic periphyton community in a stream at fresno, californiaR. aliya and
gina arce
Studies on
photosynthetic rates and species composition of an epilithic periphyton community in a stream at fresno, california ABSTRACT: an epilithic periphyton community howed
significant seasonal changes I species composition , abundance and photosynthetic rates in a slow-flowing , mammade stream. Blue green algae were dominant during summer, diatoms were dominant during spring and winter, and green algae dominated the community during fal. The highest photosynthetic rates were found in winter with 240C as the optimum temperatures for
production in all seasons.
| 43-49 |
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7 |
Effect of brown rust
infection on indole-
3-acetic acid and the activity of enzyme IAA-oxidase in different
cultivars of wheat.Hajra azhar ali
Effect of brown rust
infection on indole-
3-acetic acid and the activity of enzyme IAA-oxidase in different
cultivars of wheat. ABSTRACT: Effect of brown rust infection on
endogenous level of IAA and the activity of enzyme IAA-oxidase in three different cultivars of wheat was investigated . infected stem tissues of highly susceptible cultivars Pak-70 and Chenab-
70 showed significant increase in IAA
level as comparatively resistant cv., ZA-77. Diseased leaves of cv., ZA-77 and Pak-70 showed no significant change in IAA contents, whereas it increased
significantly in cv., Chenab-70. Pronounced decline In IAA oxidase activity was observed in leaves and stem tissues of cv., Chenab-70, while in cv.,
Pak-70 it is increased after sporulation
and then declined. Rust infection does not seem to have any considerable effect on
| 50-55 |
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8 |
Effect of N-sources
on growth of wheatS.M. ALAM,
S.S.M. NAQVI, A.R. AZMI
AND R. SULTANA
Effect of N-sources
on growth of wheat ABSTRACT: Effect of urea , (NH4)NO3 and NH4Cl on the growth of wheat cv., Lu-26-S in sandy clay loam was studied . N fertilizers significantly increased palnt height ,
number of tillers , straw weight and grain yield with marked effects where urea was used. Maximum uptake of N,P and K by wheat plant was recorded under yrea fertilization , indicating urea as a better N- source for growth of wheat.
| 56-58 |
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9 |
Field trial of c A.
juss . under highly saline water irrigation at arid sandy coastal region of pakistanD.khan , S.
ismail and R. ahmad
Field trial of c A.
juss . under highly saline water irrigation at arid sandy coastal region of pakistan ABSTRACT: In a field trial at sandy acid coastal land of
bhawani (gaddani coast , Baluchistan ) epilithic periphyton community . A. juss , plants irrigated with highly saline
(EC:10.0-15.3 dS.m-10 and sodic (irriation
quality : C4S2; SAR:c. 28 ) underground water exhibited relative inhibition of growth in height during winter months. Such inhibition was more conspicuous in stem dimeter of the treated plants which was overcome after rainfall (100mm) in april with no difference in height or stem diameter after one year of post- transplantation groth. Saline water
| 59-67 |
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10 |
Effect of sea water
salinity on nodulation and nitrogen fixation in prosopis juliflora (Swartz) DC.s. tariq
mahmood and A. mahmood
Effect of sea water
salinity on nodulation and nitrogen fixation in prosopis juliflora (Swartz) DC. ABSTRACT: Fifty six day old prosopis juliflorasedlings
were subjeacted to 40, 50, 60, 70 and
80% sea water treatment for one month. After 86 days the morphology of nodules
, root-shoot ratio and total nitrogen content in root and shoot were analysed. Nodules showed morphological alterations in size and shape . root-shoot ratio was lowest in the control and
showed a gradual increase with increasing sea water concentrations. The amount of nitrogen in the stem and leaves showed a gradual decrease due to disturbance in the translocation od divalent cations to the aerial parts, while roots registered a gradual increase with increasing sea water concentrations due to accumulation of assimilated nitrogen n the rocks.
| 68-73 |
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11 |
Influence of Nalco
on some biochemical aspectsA.hafeez
khan, A.R. azmi and
Influence of Nalco
on some biochemical aspects ABSTRACT: Effect of Nalco on two enzymes viz.,
amylase and protease and the metabolic sequence induced by them in two
| 74-80 |
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12 |
Hitochemistry of
cambium in holoptelea intergrifolia (ROXB.) planch. And mangifera indica L: its seasonal
changesK.S. RAO AND
A.R.S. MENON
Hitochemistry of
cambium in holoptelea intergrifolia (ROXB.) planch. And mangifera indica L: its seasonal
changes ABSTRACT: Seasonal histochemical localization of
starch , lipids , proteins, tannins and crystals in fusiform and ray initials and their derivatives of holoptelea integrifolia and mangifera indica was carried out. The seasonal changes were correlated with
the cambial activity of the trees.
| 81-87 |
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13 |
Structure,
compositon and above ground standing
phytomass of some
grazable grass- dominated communities ofD.khan , rafiq
ahmad and shoaib ismail
Structure,
compositon and above ground standing
phytomass of some
grazable grass- dominated communities of ABSTRACT: Herbaceous communities that emerge on
the Pakistan sea coast during monsoon have high percentage of therophytes followed by chamaephytes . besides , dominant componentof grasses , legumes were invariably present in all the sites .
the number of species in a stand varied with the nature of the site and its salinity
| 88-106 |
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14 |
Temporal changes
in vegetation of miranjani top galis
, hazara , NWFP,
PakistanS.M.
CHAGHTAI , SYED ZAHIR SHAH AND JEHANDAR SHAH
Temporal changes
in vegetation of miranjani top galis
, hazara , NWFP,
Pakistan ABSTRACT: The vegetation of miranjani top has
considerably changed in twelve years (1974-86) . more changes have occurred I the vegetation on east , west, and south- facing aspects ; whereas least change was noticed on north-facing slopes. The vegetation was dominated by koeleria gracilis , sibbaldia cunea:a , potentilla gerardiana, nepeta erecta and duchesnea
| 107-117 |
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15 |
Astudy of natural regeneration of juniperus excels M.bieb . in Baluchistan , pakistanMoinuddin ahmed, imtiaz ahmed and Pervez iqbal anjum.
Astudy of natural regeneration of juniperus excels M.bieb . in Baluchistan , pakistan ABSTRACT: Regenerating seedlings from 60 mature stands on juniper track in Baluchistan ranged from zero to 219 ha-1 with a mean of 52 ha-1. Seedling density and basal area (p<.001) and tree basal area and seedling density (p<.05) were significantly correlated indicating that seedlings are shade loving. Highest average seedling density and basal area were recorded from west facting slope. Size frequency distribution of seedling
showed a wave of recruitment in addition
to past and future trends of the seedling populations suggesting that juniper forests are not deteriorating.
| 118-127 |
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16 |
Phytosociology of
woodland communities of hazarganji national park, quettaS.A. QADIR
AND SHABBIR AHMED
Phytosociology of
woodland communities of hazarganji national park, quetta ABSTRACT: On the basis of bray and Curtis 1957
index of similarity , two plant communities were recognized . both the stand density as wel as stand cover per hectare values were higher in pistacia- cymbopogon- chrysopogon community than in pistacia-fraxinus-cymbopogon community. The latter community was homogenous while species diversity was moderate , community maturity index was low. Grasses particularly cymbopogon commutatus and chrysopogon aucheri
| 128-139 |
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17 |
Controlling
elements inducing mutational changes at the pal locus in anttrrhinum majusK.M.ASLAM
Controlling
elements inducing mutational changes at the pal locus in anttrrhinum majus ABSTRACT: In anttrrhinum majus the pal-rec-low-o is
a repressed state of the pallida-recurrens allele. In heterozygous condition, especially with pal-tub- pal—tub tester, its mutuation frequency increases from few tiny spots to very clear sectors of mutability on a recessive colourless background. This particular evocation of the pal-rec-low-o allele is considered to
be dependent on the presence of a regulatory element Pr. In the absence of such a regulatory element, the pal-rec- low-o exhibits stable expression owing to the effect of a repressor Rp residing ai or near the locus. However, pal-tub- regulatory element could be inactive , when inactive , can be made transactive by introducing a fresh regulator which may segregate at meiosis.
| 140-147 |
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18 |
Studies in the
pollen morphology of arnebia species (boraginaceae ) from pakistanU.S. QURESHI
, M. QAISER AND S. SHAHID SHAUKAT
Studies in the
pollen morphology of arnebia species (boraginaceae ) from pakistan ABSTRACT: A palynological study of 9 species of the
genus arnebia from Pakistan was carried out . the pollen were characterized by having two endoapertures per ectoaperture and a well developed costae with rectangular to constructed rectangular equatorial outline and echinate tectum. Using principle component analysis (PCA) and cluster analysis of various pollen characters a correlation of the style length and polen size was worked out.
| 148-156 |
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19 |
A cladistics analysis
of calandrinia
(portulacaceae)Syeda saleha
tahir and peter S. ashton
A cladistics analysis
of calandrinia
(portulacaceae) ABSTRACT: The cladistics relationship among 34
species of the genus calandrinia H.B. et K. (portulacaceae), endemic to austrailia were analysed for 22 binary attributes , by using “OHYSIS” computer program. The criteria used to assign evolutionary
polarity of attribute state is discussed
indetail. In all the phenograms four main groups come out fairly clearly. The major diference in the trees produced by
PHYSIS are the changes in the position of a few taxa, within the major group. The present paper provides data on variation and correlation in seed and pollen characters , and also syntheized detailed morphological relationships. The species having questionable position in some groups are discussed in the light of their unique characters.
| 158-169 |
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20 |
Systematic
structure of dampiera R. BR.Tahir Rajput
and roger carolin
Systematic
structure of dampiera R. BR. ABSTRACT: An agglomerative hierarchial cluster
analysis of dampiera R.Br. (goodeniaceae)
species was under taken by using
| 170-184 |
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21 |
Observations on
ecodemes in girardinia diversifolia (link) friis , (urticaceae) in Nepal.S.C. SINGH
AND R.R. SHRESTHA
Observations on
ecodemes in girardinia diversifolia (link) friis , (urticaceae) in Nepal. ABSTRACT: Two ecodemes of girardinia diversifolia
(link) friis are recognized on the bases of certain morphological features, seed and seedling characteristics and amino acid contents.
| 185-190 |
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22 |
Reaction of wheat
varieties to foot rot and root rot disease of wheat in
Pakistan.M. jalaluddin
and Q.M.K. anwar
Reaction of wheat
varieties to foot rot and root rot disease of wheat in
Pakistan. ABSTRACT:
| 191-194 |
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23 |
Nepeta adenophyta
hedge (labiatae), a new species from Pakistan.I.C. HEDGE
Nepeta adenophyta
hedge (labiatae), a new species from Pakistan. ABSTRACT: A new species of nepeta viz,
N,adenophyta hedge is described from Pakistan. During the course of preparation of an account of the family labiatae for flora of Pakistan, the author came across a new Nepeta species.
| 195-196 |
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Indexing
PJB is indexed
in following international databases: View all
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