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Articles by Farhatullah
Total Records ( 4 ) for Farhatullah
  Farhatullah , Rashid Mahmood and Raziuddin
  The effects of NaCl stress on in vitro induced potato plantlets of variety of potato Solanum tuberosm L.) commercial variety cardinal was studied at Potato Research Center, Abbottabad, NWFP, Pakistan. Five NaCl treatments, each consisting of 0, 1, 2, 3 and 4% were used. Viability percentage, fresh weight of plantlet and height of plantlet was decreased by given range levels of NaCl. The effect of all treatments was very drastic on length of roots and number of roots per plantlet where no response was recorded. The treatment of 4% NaCl depressed all the parameters understudy. The results indicate that the variety "Cardinal" is not salt tolerant, even at 1% salt concentration.
  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 , 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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