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Articles by Muhammad R. Khan
Total Records ( 3 ) for Muhammad R. Khan
  Muhammad R. Khan and Afsari S. Qureshi
  Seeds of three chickpea genotypes having different seed coat colours viz; Noor 91 (white), Punjab 91 (brown) and C 141 (black) were treated at 40, 50 and 60 Kr separately and with gibberellic acid (GA3). Three genotypes responded differentially for path analysis and correlation coefficient studies for various traits. Plant height, number of primary and secondary branches had negative path coefficient in Noor 91 and Punjab 91 while, these were positive in C141. Pods per plant were positively contributed in the three varieties while biological yield in Noor 91 and Punjab 91. 100-seed weight and maturity days had positive direct effect on grain yield in Noor 91 and C141 while, these were negative in Punjab 91. The genotypic correlations in most of the characters were higher than the corresponding phenotypic correlations. Pods per plant had positive and highly significant correlation with grain yield in three genotypes. Number of primary branches was positively and significantly associated with grain yield in Punjab 91 and C141. Seeds per pod, harvest index were highly significantly correlated while; biological yield was significantly associated with grain yield in Noor 91 and Punjab 91. Plant height and 100-seed weight had significant and positive correlation with grain yield in Punjab 91.
  Muhammad R. Khan , Afsari S. Qureshi and Syed A. Hussain
  Dry seeds of three chickpea genotypes having different seed coat colours viz; Noor 91 (white), Punjab 91 (brown) and C 141 (black) were treated at 40, 50 and 60 Kr separately and with gibberellic acid (GA3) for studying the effects on 100-seed weight, grain yield, biological yield, harvest index, days to flowering and maturity in M1 generation. Highly significant (p<0.01) variation within genotypes, treatments and also for their interaction was observed for all the characters. Statistically higher 100-seed weight was observed with the combine treatment in the three genotypes as compared with gamma irradiation. Combine treatment normalized the grain yield in Noor 91, while decreased in Punjab 91 however, stimulation was recorded at 40 and 50 Kr in C 141. Stimulation in biological yield was recorded at 40 Kr with the combine treatment in Noor 91 and C141. Harvest index decreased with gamma irradiation in the three genotypes while, stimulation was recorded in C 141. Days to flowering and maturity increased with gamma irradiation however, with combine treatment these values were reduced.
  Muhammad R. Khan , Afsari S. Qureshi , Syed A. Hussain and Muhammad Ibrahim
  Three chickpea genotypes viz., Noor 91 (white), Punjab 91 (brown) and C 141 (black) were treated with 40, 50 and 60 Kr doses of gamma irradiation separately and post mutagenically with gibberellic acid (GA3) to create genetic variability. M2 progenies of these treatments were raised from M1 seeds in plant to family manner. The results indicated that induced mutability is governed by the genetic architecture of the material used. Various morphological mutations induced affecting plant height, growth habit, branching and stem structure, stem and foliage colour, leaf type, flowering and maturity, pod and seed type. There were differences between the genotypes and between the two types of treatments. Frequency of these mutants increased with gamma irradiation in Noor 91 and C 141 while, with GA3 it tended to increase in the three genotypes.
 
 
 
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