Performance and stability of some promising wheat lines under different environmental conditions [electronic resource].

By: Contributor(s): Language: English Summary language: Arabic Description: p.43-68Other title:
  • دراسات على سلوك وثبات بعض سلالات القمح المبشرة تحت ظروف بيئية مختلفة [Added title page title]
Uniform titles:
  • Egyptian journal of plant breeding, 2002 v. 6 (1) [electronic resource].
Subject(s): Online resources: In: Egyptian Journal of Plant Breeding 2002.v.6Summary: Fourty seven bread wheat promising lines were evaluated for mean performance and stability of earliness, grain yield / plant and grain protein content in F6 and F7 generations along with the three check cultivars, i.e., Sakha 8, Sakha 69 and Sids 1 under two sowing dates (11 Nov. and 12 Dec.) and three N-fertilization levels, i.e, 50, 75, and 100 kg N/fed during 1996 197 and 1997/98 growing seasons. Two field experiments were carried out the first was devoted to normal sowing date and the second for late sowing. The experimental design was a split-plot design with four replications. N-levels and genotypes were randomly arranged in main and split-plots, respectively. Single and combined analysis of variance was achieved for data obtained in each season. Phenotypic stability was computed according to Eberhart and Russell (1966). The results confirmed the existence of considerable variation among wheat genotypes and their performance, significantly affected by the changes in sowing dates and N-fertilization levels and the interaction between them for the studied traits Delaying sowing date significantly decreased grain yield / plant in both seasons and grain protein content in first season only and caused delaying heading date.
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Fourty seven bread wheat promising lines were evaluated for mean performance and stability of earliness, grain yield / plant and grain protein content in F6 and F7 generations along with the three check cultivars, i.e., Sakha 8, Sakha 69 and Sids 1 under two sowing dates (11 Nov. and 12 Dec.) and three N-fertilization levels, i.e, 50, 75, and 100 kg N/fed during 1996 197 and 1997/98 growing seasons. Two field experiments were carried out the first was devoted to normal sowing date and the second for late sowing. The experimental design was a split-plot design with four replications. N-levels and genotypes were randomly arranged in main and split-plots, respectively. Single and combined analysis of variance was achieved for data obtained in each season. Phenotypic stability was computed according to Eberhart and Russell (1966). The results confirmed the existence of considerable variation among wheat genotypes and their performance, significantly affected by the changes in sowing dates and N-fertilization levels and the interaction between them for the studied traits Delaying sowing date significantly decreased grain yield / plant in both seasons and grain protein content in first season only and caused delaying heading date.

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