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Articles by Muhammad Akbar
Total Records ( 6 ) for Muhammad Akbar
  Muhammad Akbar , Tariq Mahmood , Muhammad Yaqub , Muhammad Anwar , Muhammad Ali and Nasim Iqbal
  Eighteen lines/varieties of Brassica juncea L. were evaluated for plant height, number of branches plant-1, Number of siliquas plant-1, 1000 seed weight and seed yield plant-1 through PCV, GCV, h2, G.A., correlations and path coefficient analysis. Number of siliquas plant-1 found strong parameter followed by number of branches and Plant height for seed yield improvement. Siliquas plant-1 had highest GCV, h2, G.A., highly significant positive correlation and maximum direct contribution for seed yield followed by number of branches plant-1 and plant height.
  Muhammad Akbar , Abdul Qadeer Mehal and Muhammad Javed Arshed
  In the present study population of Indus dolphin Platanista minor was estimated in the River Indus from Jinnah-Guddu Barrage during March 2001. Total 344, 417 and 306 dolphins were recorded in sum of best, high and low groups, respectively. Total 170 sightings of dolphins were recorded in which population ranged 306-417 dolphins. Population density per kilometer based on best estimates was found 0.41 dolphins. Mean width of the river was found 351.37 m, which was very low due to shortage of water and played important role in the accuracy of dolphin population estimation
  Muhammad Akbar , Noor-ul Islam Khan and Khalid Mahmood Sabir
  Highly significant differences existed among 17 genotypes of linseed. Seed yield per plant was positively associated with all traits, number of seed per pod and number of pods per plant had highly significant positive genotypic correlation coefficent followed by significant positive correlation coefficient of number of branches per plant. The direct effect of number of seed per pod was the highest followed by number of pods per plant and 1000 seed weight. Therefore, improvement of seed yield in the material is possible by using appropriate breeding strategy through selection for number of seed per pod, number of pods per plant, 1000 seed weight and number of branches per plant.
  Noor-ul Islam Khan , Muhammad Akbar and Nasim Iqbal Sajid Rasul
  Five linseed (Linum usitatissimum L.) genotypes were evaluated for four years (1993-98) for seed yield. LS-49, 1.5-75, LS-73 and LS-29 demonstrated 24.82, 18.23, 29.92 and 3.09% higher mean yield compared to a commercial variety Chandni, during 1993-94 and 1994-95 at the research station. Mean yield of 11 trials conducted over different locations in Punjab during 1996-97 and 1997-98 showed the highest yield of LS-73 followed by LS-49, LS-75 and LS-29 compared to 677 Kg ha–1 of Chandni. In three of the 11 trials, LS-49 ranked first while all other genotypes each enjoyed first position in two trials, indicating considerable influence of location on genotypic performance. Ls-49 was the most stable genotype amongst five and it showed responsiveness to agronomic manipulation to obtain higher yield.
  Noor-ul-Islam Khan , Muhammad Akbar , Nasim Iqbal and Sajid Rasul
  The breeding values of six linseed genotypes viz; LS-1, Chandni, LS-53, LS-62, LS-13 and P-250 were determined in a half diallel experiment using combining ability analysis for seed yield arid five components of seed yield. Significant General Combining Ability (GCA) effects and Specific Combining Ability (SCA) effects were noted for all traits. LS-53, Chandni and IS-1 displayed positive GCA effects for seed yield per plant. LS-53 and Chandni also showed desirable GCA effect for number of branches per plant and number of capsules per plant. Amongst the 15 crosses, 7 (LS-1 x LS-53, Chandni x P250, Chandni x LS-53, Chandni x LS-62, LS-53 x LS-13, LS-53 x P-250 and LS-53 x LS-62) involving at least one parent with good GCA effect for seed yield per plant and at least one component of yield, are expected to throw higher frequency of desirable segregants to develop high yielding linseed lines.
  Saeed Ahmad Shah Chishti , Muhammad Akbar , Muhammad Aslam and Muhammad Anwar
  Sixteen early maturing genotypes of groundnut showed significant variation for all characters studied expect 100 kernal weight. Phenotypic Coefficient of Variation (PCV) was higher than Genotypic Coefficient of Variation (GCV) for all the characters. High heritabilities (h2) for days taken to flowering and maturity were found very high. At genotypic level all the traits under study except days taken to maturity exhibited significant positive association with pod yield while it showed significantly negative correlation. Sound Mature Kernal (SMK) %age by weight longwith shelling %age and No of pods per plant had fairly high h2, high Genetic Advance (G.A.), significantly positive genotypic correlation and positive direct effect on pod yield. Hence selection for these traits would be effective in improving pod yield and oil contents in early maturing genotypes.
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