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Articles by Masood Jan
Total Records ( 4 ) for Masood Jan
  Masood Jan , Farhatullah and Ghulam Hassan
  The study was carried out to determine magnitude of heterosis for six heritable traits in sunflower. Study was conducted during 2000-2003 at NWFP Agricultural University, Peshawar on a 8x8 diallel cross of sunflower to find out the extent of heterosis for parameters like head size, achene yield/plant, achene number/plant, 100-achene weight, achene yield (kg ha-1) and oil content. Heterosis was observed for all the parameters studied. The magnitude of heterosis for different characters varied for the parameters studied and it was the maximum (32.88%) for head size and minimum (1.29%) for achene yield ha-1. No cross combination was consistent in heterosis for all characters studied. Maternal effects were significantly visible for traits like achene number/plant, achene yield ha-1 and oil content but not significantly visible for head size, achene yield/plant and 100-achene weight. For most of the characters except head size and achene number, heterosis was more in those cross combinations where parents were phenotypically at distance.
  Masood Jan , Ghulam Hassan , Iftikhar Khalil and Raziuddin
  An 8x8 full diallel set of bread wheat (Triticum aestivum L.) was studied for heterosis and heterobeltiosis. The magnitudes of heterosis (mid-parent) and heterobeltiosis (better-parent) from F1 were calculated for days to heading, flag leaf area, plant height, spike length, days to maturity and harvest index. All the 56 F1 hybrids and their parents were planted in a randomized complete block design in three replicates. Out of the 56 F1 hybrids, 18 and 16 hybrids for days to heading; 11 and 2 for flag leaf area; 24 and 15 for spike length; 8 and 3 for days to maturity and in 3 and 1 for harvest index expressed significant heterosis and heterobeltiosis, respectively. Maximum limits of heterobeltiosis for flag leaf area, spike length, harvest index, plant height, days to heading and days to maturity were 22.3, 13.03, 11.23, 3.27, 2.60 and 1.82%, respectively. Among parent cultivars, Takbeer, Inqilab-91, Tatara and Idaho-458 proved to be superior combiners. Populations of Tatara x Khattakwal, Takbeer x Inqilab-91, Idaho-458 x Fakhre Sarhad, Fakhre Sarhad x Takbeer and Ghaznav-98 x Takbeer were the best for most of the traits and their use in breeding programmes is suggested.
  Masood Jan , Farhatullah , Muhammad Tariq Jan , Ghulam Hassan and Raziudin
  A study on a 8x8 diallel fashion in sunflower was conducted at NWFP Agricultural University Peshawar Pakistan. The genetic analysis showed that additive and non-additive effects were significant for achene yield (kg ha-1). The maternal and non-maternal reciprocal effects were also controlling the inheritance of the trait. The non-additive effect was more pronounced from H1>D. The Wr/Vr did not give a slope so the mean degree of dominance (H1/D)1/2 better reflected the overdominance effect for the trait. In case of oil content, the Hayman complete analysis suggested the involvement of additive and non-additive components of variation. Dominance genetic vrainaces H1 and H2 were also significant indicated that genetic variances for oil content was under control of both additive and non-additive effects. The Wr/Vr graph indicated that overdominance is controlling oil content in these genetic materials. The heritability estimates in broad sense were from moderate to high while heritability estimates in narrow sense were low to moderate for both the traits.
  Masood Jan , Farhatullah , Ijaz Begum , Ghulam Hassan and Iftikhar Khalil
  The objective of this study was to determine magnitude of heterosis for yield and oil content in sunflower. For this purpose, a study was conducted during 2003-2004 at NWFP Agricultural University, Peshawar on a diallel cross of sunflower to find out the extent of heterosis for achene yield (kg ha-1) and oil content (g kg-1). Heterosis was observed for these both parameters. The magnitude of heterosis of F1 over mid-parent was 1.29 in direct crosses while 3.73% in reciprocal crosses for achene yield ha-1. Similarly the magnitude of heterosis for oil content was 31.19 in direct crosses while this magnitude was 5.71% in reciprocal crosses for oil content in sunflower. The study showed that the direct and reciprocal crosses showed totally different magnitude of heterosis for both traits studied. In cross combinations heterosis for both traits was more in those crosses where parents were phenotypically at distance.
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