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Year 1980 , Volume 12, Issue 1
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abstract of the paper
S.No. |
Title |
Authors |
Pages |
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1 |
Transmission of
deficient gametes bu monosomics of avena sativa L.H.M. I. HAFIZ
Transmission of
deficient gametes bu monosomics of avena sativa L. ABSTRACT: Parental monosomics (2n-1=4)
derived from the cultivars garry (WM
2-1 ) from Canada and borreck (GM I-I) from west Germany , their monosomic F hybrids and BC 1-BC4 to sun II were used to study the transmission of deficient gamtes.
The frequency for functional 20-
chromosome male gametes was lower in the homozygous than heterozygous monosomics. The 40-,
41- and 42- chromosome progenies in selfed monosomic indivisuals
depend upon the proportion of deficient (2n-I) but functional male gametes . the correlation between the proportion of 20-chromosome gametes produced and the proportion that function is significant. (r= 0.86)
| 1-12 |
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2 |
Genotype x
interaction among mutagen-derived barley populationsA. Ghafoor
arain and K.W. shephered
Genotype x
interaction among mutagen-derived barley populations ABSTRACT: Investigation were conducted on
genotype x site interaction of mutagen=derived barely lines in comparision to control over four different sites in south austrailia. Seeds of five cultivars (clipper , C.I
3576, proctor , ketch and prior ) having different yields and adaptation characteristics were treated with 0.04 M ethyl methanesulphonate (EMS) for 8 hours and population of M2- derived
| 13-30 |
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3 |
Estimates of genetic
variability in mutated populations of triticum aestivumA.S. LARIK, K.A.
SIDDIQUI AND A.H. SOOMRO
Estimates of genetic
variability in mutated populations of triticum aestivum ABSTRACT: M2 populations of four cultivars of Mexican origin ( miexipak-65, nayab , pak-70 and 6134 x C-271) and two locally bred cultivars (H-68 and C-
591) of braed wheat triticum
aestivum (2n=6x= AA BB DD )derived from six irradiation treatments (gamma rays Co60 ; 10, 15, and 20 KR and fast neutrons ; 300, 600 and 900
RADS ) were critically examined for
| 31-41 |
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4 |
Abutilon muticum
and abutilon pannosum complexSultanul abedin
Abutilon muticum
and abutilon pannosum complex ABSTRACT: Abutilon muticum (Del.ex. DC.)
sweet generally considered conspecific with either abutilon
| 43-48 |
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5 |
Critical notes on
some hibiscus speciesSultanul abedin
Critical notes on
some hibiscus species ABSTRACT: The present paper deals with critical
discussions on hibiscus micranthus L.f.,H aristivalvis garcke and H. purpurreus forssk. H micranthus var. ovalifolius sensu boiss. Generally accepted as a distinct variety is reduced to the synonymy under H. micranthus var. alii S. abedin , which is described as a new variety . H. micranthus var. asper Cuf . is reduced to the synonymy under H.
micranthus var. rigidus (L.f.) Cuf.
| 49-56 |
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6 |
Studies on the
organization of genes controlling lysine biosynthesis in neurospors crassa IV. Segregation patterns, maturity and viability of ascospora and conidiation of some lys05 mutants .Majeed ahmad and
S. haque and M.U. ahmad , A. zaman , M. mohiuddin, Y.A. saeed and A.
khairul.
Studies on the
organization of genes controlling lysine biosynthesis in neurospors crassa IV. Segregation patterns, maturity and viability of ascospora and conidiation of some lys05 mutants . ABSTRACT: Studies on 39 U.V. induced lys-5
mutants have shpwn that a mutation at this locus not only results in a requirement for lysine but also
retards the maturation of spores. The mutant spores lack pigment at a
stage of development when the wild type spores have acquitted it.
Mutant spores are mostly inviable, the inviability of mutant acospores have been found to range from about 70 to 95%. Both the pigments and viability of acspores generally improves with time. In addition to
the expcted first and second division, segregation patterns of coloured and colourless spores , 98 different
| 57-67 |
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7 |
Effect of different
oxygen pressures and of age on changes in catalase and peroxidase activities of rhizopus oryzae under high
pressures of oxygen.Soaliha ahmed
Effect of different
oxygen pressures and of age on changes in catalase and peroxidase activities of rhizopus oryzae under high
pressures of oxygen. ABSTRACT: Changes in catalase activity of
rhizopus oryzae on ethanol medium under high pressures of oxygen varied with varying pressure. The optimum pressure for induced increase of catalase was found to be
4 atmospheres. This induced increase in catalae activity was affected by the age of fungus culture , 44 and 69 hour old cultures showed a decrease in enzyme activity under high pressure of oxygen, whereas an increase was observed in 24 hour old culture. Long term studies under optimum pressure and age revealed that the induced changes in catalase
and peroxidase activities of R. oryzae are essentially similar under HPO. Where as alchol dehydrogenase exhibits a decrease instead of an increase . these changes in enzyme activities in response to HPO are reversible on returning the treated samples to air.
| 69-76 |
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8 |
Influence of salinityMUSTAFA
Influence of salinity ABSTRACT: Rates of gross photosynthesis and
| 77-80 |
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9 |
Preliminary
investigations on the effect of (2- chloroethyl) trimethylammonium chloride (CCC) on
the metabolism of chlorella.Jamil ahmed and
zaib-un-nisa abdullah
Preliminary
investigations on the effect of (2- chloroethyl) trimethylammonium chloride (CCC) on
the metabolism of chlorella. ABSTRACT: Chlorella cultures were grown in light
with low and high concentrations of (CCC) and the rate of growth . photosynthesis , respiaratiion, nitrate and nitrite assimilation were
studied. CCC at low concentrations up to 6.3 x 10-6M, did onot have any effect on these processes where as at higher concentrations 0.5 x 10-4 to
0.5 to 10-2M, all these processes were affected differently. CCC brings
about qualitative change in the soluble pool of the amino acids in treated cells of chlorella.
| 81-89 |
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10 |
Qualitative
estimation of freeM. athar and A.
mahmood
Qualitative
estimation of free ABSTRACT: Free amino acids in the root nodules
of tribulus terrestris L. were
| 91-96 |
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11 |
Herbicide influence
on germination and seedling growth of vigna mungo(L). hepper and V. radiate (L) wilczek.S.shahid shaukat ,
naqvi A. khan and farzana ahmed.
Herbicide influence
on germination and seedling growth of vigna mungo(L). hepper and V. radiate (L) wilczek. ABSTRACT: Tolerance of vigna mungo and V.
radiate to chloro-phenoxyacetic acid, chloro-phenoxybutyric acid and triazine herbicides was evaluated.
2,4-D and 2, 4, 50T were found to be highly inhibitory to germination and early seedling growth of the legumes
. MCPB suppressed the germination
of V. radiata at > 50 ppm and that of V. mungo at 800 ppm , but inhibited root as well as shoot growth at > 25 ppm. The triazines viz. prometryne and terbutryne , did not inhibit
| 97-106 |
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12 |
Effect of aluminium
on plant growth and mineral nutrition of barleyS. manzoor alam
and W.A. ADAMS
Effect of aluminium
on plant growth and mineral nutrition of barley ABSTRACT: Batley seedlings were grown in
nutrients solution to study the effect of aluminium (0.0. 0.2, and 0.6 mM) on plant growth and mineral nutrition . chlorosis appeared on the young leaves of Altoxic plants and
was severe on high Al level . stems of the Al0treated plants were purple. While the roots were short thick and brown in colour . dry matter yield of barley shoot and root decreased progressively with increase in Al-level
. the concentration of K. Ca Mg and Mn substantially decreased in shoot and root while P decreased in shoot but it increased in root with high Al compared to control. With increased Al levels the concentrations of Al and Zn increased in shoot and root, while i.e content in shoot was not greatlu affected but in root decrease in Fe
| 107-113 |
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