Study on Adaptability and Stability of Grain Yield in Durum Wheat Lines in Warm and Semi-Warm Dryland Areas

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Abstract

  In order to study the adaptability and yield stability of rainfed durum wheat promising lines, an experiment was conducted with 20 genotypes in RCBD during three cropping seasons (1998-2001) in four warm and semi-warm stations in Iran. Simple ANOVA and combined analysis of variance for three years in each location and combined analysis of variance for three years and four locations were implemented. Lin and Binns parameter, coefficient of variation of grain yield and rank method were used for determination of stable lines. Results of combined ANOVA (three years four locations) showed that interaction effect of year location genotype was significant. The highest grain yield was belonged to line no. 6 ( Mrb11//Sinpe/Magh/…) with 2.33 tha-1 and line no. 5 (Mrb11//Sinpe/Magh/…) with 2.26 tha-1. Results of stability analysis with Lin and Binns method showed that lines no. 16, 18 and 15 had the lowest inside location variance for grain yield and the lowest grain yield coefficient of variation was belonged to lines no. 18, 16 ,15 and 6, respectively. The results of rank method showed that lines no. 6 and 5 had the lowest and lines no. 17 and 7 had the lowest SDR among the experimental lines. Based on the results, lines no. 6 and 5 had the highest grain yield and yield stability, therefore can be recommended for warm and semi-warm dryland regions.   

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Seed and Plant Journal
Volume 21, Issue 4
December 2005
Pages 561-576

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