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by
Muhammad Irfaq |
Total Records (
2 ) for
Muhammad Irfaq |
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Muhammad Irfaq
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Khalid Nawab
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Pure dry seeds of three wheat cultivars viz. Pirsabak-91 (P-91), Khyber-87 (K-87) and Tarnab-78 (T-78) were treated with 100, 200,300 and 400 Gy doses of gamma rays from 60Co at Nuclear Institute for Food and Agriculture (NIFA) Tarnab, Peshawar. The influence of radiation was examined on some morphological characteristics like germination percentage(%), survival percentage (%), number of tillers plant-1, days to heading, spike length, number of grains spike-1 and grain yield (kg ha-1). A gradual decrease in the mean values for all the parameters was observed with the increase in the radiation intensity except number of tillers plant-1 which showed significant increase in case of all the cultivars. In general, adverse effects on most of the parameters were produced as a result of higher doses (300 and 400 Gy) of gamma rays. |
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Muhammad Irfaq
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Tila Muhammad
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Muhammad Amin
and
Abdul Jabbar
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Four wheat genotypes viz., CT-0231, CT-99187, Bakhtawar-92 and Saleem-2000 were planted at NIFA experimental field on four different planting dates in order to test their performance against heat stress. The influence of heat stress was studied on yield and some other agronomic characters viz., days to 50% emergence, days to 50% heading, days to 50% maturity, plant height (cm), Biological yield (kg ha-1) grain yield (g/plot), grain yield (kg ha-1), harvest index (%) and lodging percentage. A gradual decrease in all the parameters was observed as a result of the late planting dates except for number of days taken to 50% emergence which was increased for all the genotypes in correlation with late planting. However, increase in grain yield (g/plot), grain yield (kg ha-1) and harvest index was observed for all the four genotypes at planting date 2. Which was considered to be the optimum sowing date for the genotypes under consideration. |
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