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Articles by Shafiullah
Total Records ( 7 ) for Shafiullah
  Juma Khan , Shafiullah and Baitullah
  The diallel analysis of variance indicated highly significant differences among the genotypes for all the characters except number of ears per plant. The correlation studies on seven characters of 4 parents and 6 hybrids revealed highly significant genotypic positive association between yield and yield components, whereas the phenotypic association of yield components with yield was positive and significant except number of ears per plant, where it was positive but non-significant. Among the characters studied, the number of rows per ear reflected the highest direct contribution of 0.636 and indirect average contribution of 0.605 towards grain yield. Number of ears per plant and number of rows per ear expressed the highest positive coefficient of correlation of 1.409 and 1.018 with grain yield, respectively.
  Juma Khan , Shafiullah and Baitullah
  Combining ability effects were estimated for maize (Zea mays L.) grain yield and six related agronomic traits in 4 x 4 diallel analysis. Mean squares due to genotypes and specific combining ability effects for all traits except number of ears per plant were highly significant. Mean squares due to general combining ability effects were highly significant for ear height and number of grain rows per ear and significant for plant height and 100-grain weight, while these were non-significant for number of ears per plant, number of grains per row and grain yield per hectare. Variances due to specific combining ability were greater and more important for all characters except number of rows per ear. It indicated the presence of non-additive type of gene action. The inbred line USSR-3135 proved to be the best general combiner for number of rows per ear (0.352), number of grains per row (0.537) and grain yield per unit area (0.343), whereas the inbred line IMAN-I was good general combiner for plant height (0.055), inbred line A-637 was good general combiner for ear height and the inbred line ASE-304 was good combiner for 100-grain weight. A cross USSR-3135 x A-637 showed the best specific combining ability effect (3.253) for grain yield.
  Shafiullah , S. Asad , M.A. Rana , Baitullah , A.S. Khan and M.A. Malik
  Four row directions i.e., north-south (NS), east-west (EW), north east-south west (NESW) and north west-south east (NWSE) had very little effect on seed yield and other agronomic characters of sunflower. The differences in mean plant height, head diameter, seed yield, 100-achene weight and fatty acid profile were statistically non-significant. Similar trend was observed during both the single years. As an average of two years, although statistically non-significant, the highest seed yield of 3065 kg ha–1 from north east-south west (NESW) and the lowest yield of 2624 kg/ha were obtained from east-west (EW) row directions. The most pronounced effect of row directions was noted on the seed moisture content. As an average of two years, the maximum seed moisture content (21.4%) at harvest was obtained from east-west (EW) and the minimum (14.6%) from north-south (NS) row directions. NESW row direction also gave significantly lower moisture content (15.1%) than EW (21.4%) and NWSE (18.1%) row directions. Therefore, using north-south and NESW row directions would help to dry standing crop more quickly before harvest and reduce post harvest costs and losses. Seed production fields that require examination of sunflower heads to detect pollen production should be planted in NS rows for efficient rouging to keep genetic purity. For research plots, EW rows with plot labels on the east end often are preferred, because it is easier to evaluate most plots when all heads face the viewer.
  Shafiullah , M.A. Khan , M.A. Poswal , M.A. Rana and Baitullah
  The removal of upper 2/3 and ½ leaves caused a yield reduction of 29 and 55.8 percent in 1992 and 37 and 44.8 percent in 1993, respectively. During 1992, about 1 percent yield decline was observed when the lower 1/3 leaves were removed and 6 percent yield declined with the removal of the lower ½ leaves, while in 1993, the yield reduction was 26.7 and 39.2 percent due to removal of lower 1/3 and ½ leaves, respectively. This indicated that upper leaves (source) contribute more towards sink (seed yield) as compared to the lower ones. Correspondingly, the results indicated that insects and pests feeding on the upper portion of the sunflower plant can cause more reduction in seed yield than the lower leaves.
  Fazal Rehman , Sharafat Khan , Faridullah and Shafiullah
  Twelve tomato varieties were sown at Agriculture Research Institute for Northern Areas (ARINA) Juglote, to study the various growth productivity and quality characters for evaluating under agro climatic conditions of the area and to compare performance of the local variety with other commercial varieties. Data on days to flower initiation, number of clusters/plant, days to first fruit picking, weight of individual fruit, weight of total fruit/plantnumber of fruits /plantweight of fruits/plot, length and diameter of fruits and yield (kg/ha) were recorded. The number of clusters/plant were maximum in variety Roma (13.5) and minimum in variety Chico. Chico bore the highest number of fruits/plant (52.50) while F M B9 and local check had the lowest number of of fruits/plant (24.75 and 26.0). Fruit size was maximum in Tanja (6.90 cm) and minimum in local check (3.08). Savio and Roma took the minimum time (100 and 102 days), while Festen and Red top took the maximum time (125 days) from transplanting of seedlings to ripening of first fruit. Festen and local check were early maturing varieties, while Roma and Marglobe had long fruiting period. Tanja and Marglobe were late in maturity as compared to other varieties. Roma and Marglobe produced the highest Yield 9218.75 and 9140.75 kg/ha, respectively than the other varieties and local check proved to be the lowest yielder with (3596.25 kg/ha).
  S. A. Kakakhel , M. Amjad , Shafiullah and R. Masih
  Weekly data for population trend of Nysius inconspicuus Distant. showed that its attack was initiated in May at late seed development stage and remained until sunflower harvesting. The average number of bugs was 0.15 per head in the second week of. May. A sharp increase was observed in its population and a maximum number (216.5 bugs/plant) was recorded in the. Jest week of June at the time of harvest during spring, 1994. Dimecron 100 SCW at 300 mliacre, Paramat 50 EC at 450 ml/acre, Thiodan 35 EC at 700 mliacre and Tamaron SL 100 at 450 ml/acre were tested for the control of dusky bug, N. inconspicuus Distant. on sunflower during spring 1994. They effectively controlled the bug population and saved the yield significantly. There was no significant difference for dusky bug mortality among the tested insecticides. The bug control increased crop yield and percent oil content significantly compared to check. Dimecron 100 SCW gave the best result regarding the yield (2205 kg ha–1) and oil content (45.33%) followed by Paramat 50 EC (1867 kg ha–1 and 44.71%), Thiodan 35 EC (1781 kg ha–1 and 45.17%) and Tamaron SL 100 (1727 kg ha–1 and 43.30%), respectively. The effective control is achieved when the crop was sprayed at 10-day interval.
  Muhammad Ashraf Malik , Abdus Saboor Khan , Shafiullah , Muhammad Ayub Khan , B. Roidar Khan and Akbar S. Mohmand
  The research was carried out on ten varieties/accessions of Brassica species for the study of correlation in different yield contributing characters. Data were recorded on various quantitative charsters. Positive correlation was observed between primary branches and seed yield both at genotypic and phenotypic levels. Similarly seed yield showed positive correlation with siliqua per plant, number of secondary branches and siliqua length. While this relation was negative and highly significant in case of days to flower completion and plant height. Whereas seed yield was negatively and non-significantly correlated with seed per siliqua and 1000-seed weight.
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