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Articles by I.A. Qamar
Total Records ( 3 ) for I.A. Qamar
  Sadia Alam , Asghar Ali , I.A. Qamar , M. Arshad and Salim Sheikh
  The present project was aimed to determine the correlation coefficients among different economically important traits using three varieties of Sorghum bicolor, and to ascertain the best combinations of characters to provide an ease to the breeders for improving those characters to improve biomass and yield. The sorghum varieties were PARC SS-1, PARC SS-2, and Pothwar 3-9 as control. The experiment was planted in July, 1998 at National Agricultural Research Centre (NARC), Islamabad in Randomized Complete Block Design (RCBD) with 3 replications. The plant observations were recorded from five earmarked plants in each plot and replication. The characters for observations were plant height, panicle length, 100-seed weight, number of grains/plant, days to 50% flowering, days to maturity, grain yield, stover yield and total dry matter (TDM). All traits were positively highly significantly (P<0.01) correlated with one another and yield. These findings indicate great scope for improvement in sorghum yield by improving the traits of 100-seed weight, panicle length, plant height and days to 50% flowering which are important yield components.
  Saima Bashir , Asghar Ali , I.A. Qamar , M. Arshad , Salim Sheikh and Muhammad Asif
  To determine the correlation coefficients for different economically important traits using three warm-season forage legume species of cowpea (Vigna unguiculata (L.) Walp.), lablab bean (Lablab purpureus L.) and rice bean (Vigna umbellata Thunb.), the observations were recorded on plant height, number of branches/plant, number of pods/peduncle, number of pods/plant, number of seeds/pod, pod length, days to 50% flowering, 100-seed weight, days to maturity, grain yield, straw yield and biomass. Simple correlation was used to see the association among plant traits. The species were significantly (P 05) different for most of the parameters studied showing variability among the genotypes for those characters. A significant (P<0.05) positive correlation was observed for plant height with pod length and 100-seed weight, number of branches/plant with days to 50% flowering and days to maturity, number of pods/peduncle with number of pods/plant, pod length with seed size, number of seeds/pod with pod length, days to 50% flowering with days to maturity, grain yield with straw yield and TDM (total dry matter) and straw yield with TDM. It indicates that these positive associations may be exploited for any improvement work of the traits in warm-season forage legumes to improve their overall productivity and production.
  Asghar Ali , J.D.H. Keatinge , Sarfraz Ahmed B. Roidar Khan and I.A. Qamar
  To provide an alternative feed source for animals in winter, the study was conducted to develop a suitable, annually sown, cool season, forage legume variety for the arid uplands (>1000m altitude) of Balochistan. Out of 36 experiments, Kohak-96 significantly (P less than 0.05) out-performed the check in 29 and 23 experiments in TDM (total dry matter) and seed yield, respectively, whereas it remained non-significant (P > 0.5) in rest of the experiments. It gave 25-67 per cent TDM and 0-100 per cent seed increase over the check. It gave maximum average TDM (total dry matter) of 6083 kg ha-1 and seed yield 981 kg ha-1 during 1986/87 as compared to 2510 kg ha-1 TDM and 445 kg ha-1 seed yield by the check (local lentil) during 1995/96. The minimum average TDM of 149 and 104 kg ha-1 was given by Kohak-96 and check, respectively, during 1987/88 with spring-planting. At the same time, the minimum seed yield was also obtained from both in the same season and the check could not produce any seed at all indicating the in-appropriateness of planting Kohak-96 in spring in the most dry years. Application of Rhizobium inoculum and 60 kg ha-1 phosphate fertilizer at the time of sowing of Kohak-96 gave significantly (P less than 0.05) higher TDM and seed yield than non-application of these two agronomic inputs. A seed rate of 60 kg ha-1 gave significantly (P less than 0.05) higher TDM and seed yield than other seed rates. Forage production gradually increased from pre-flowering to maturity in Kohak-96 and the check (local barley, used only for grazing studies). Kohak-96 significantly (P less than 0.05) out-performed the local barley in forage production at all phenological stages. The forage intake by sheep was significantly (P less than 0.05) higher for Kohak-96 at the first two stages of growth but less than the check at maturity. The sheep grazing Kohak-96 gained significantly (P less than 0.05) more weight than the sheep grazing barley consistently at all phenological stages. This indicates that sheep could be maintained successfully on Kohak-96, cultivated under rainfed conditions in winter, during forage deficit period without any loss in their body weight and it can also act as winter forage reserve.
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