نوع مقاله : مقاله کامل علمی- پژوهشی
نویسندگان
1 گروه مهندسی تولید و ژنتیک گیاهی، دانشکده کشاورزی، دانشگاه بوعلی سینا، همدان، ایران.
2 گروه مهندسی تولید و ژنتیک گیاهی، دانشکده کشاورزی، دانشگاه بو علی سینا، همدان، ایران.
3 بخش تحقیقات زراعی و باغی، مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی استان کردستان، سازمان تحقیقات، آموزش و ترویج کشاورزی، سنندج، ایران.
4 گروه علوم باغبانی، دانشکده کشاورزی، دانشگاه بوعلی سینا، همدان، ایران.
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
Abstract
Background and objectives: Chickpea is one of the most important and valuable food sources in the world due to its protein and carbohydrate-rich seeds, ability to be cultivated in adverse environmental conditions, and high economic benefits. this crop, as the second most important legume in terms of cultivated area, is often cultivated under rain-fed conditions, and under these conditions, drought stress is the most important factor in yield loss of this crop. Usually, One of the main steps in introducing a variety is the evaluation and comparison of the performance stability of promising lines. Accordingly, the present research was conducted using various stability indices to identify stable lines with desirable performance.
Materials and methods: In this study, the yield stability of 18 promising chickpea lines during four years with four repetitions in each year using various stability indices, including within genotype variance, within genotypic coefficient of variance, Wricke’s ecovalence, Shukla’s stability variance, Finley and Wilkinson's regression coefficient, Finley and Wilkinson triangular method, Eberhart and Russell’s regression model were evaluated.
Results: According to the results of the combined analysis of variance, the genotype × environment interaction was significant (p≤0.01). This indicated the necessity of analyzing yield stability in the lines. Due to the positive and significant correlation (r=0.961) between the Finley and Wilkinson regression coefficient and the Eberhart and Russell regression coefficient, these indices were selected as appropriate criteria for distinguishing superior and stable lines. Lines No. 18, 17 and 6 recorded the highest average grain yield, whereas lines 14, 13 and 1 exhibited the lowest, respectively. Lines 18 and 17 with average grain yield of 660 and 653 kg ha-1, respectively with higher yield than the overall yield of all genotypes (572 kg ha-1), showed the highest genotypic index, the highest positive phenotypic index, and the lowest Finley and Wilkinson regression coefficient. The mean square deviation from the regression for lines 18 and 17 was not statistically significant. Accordingly, and with regard to grain yield, these two lines were identified as the most desirable and stable lines. Line No. 5 also with lower yield than the average yield of all genotypes, showed the highest Finley and Wilkinson regression coefficient and the highest Eberhart and Russell regression coefficient. This line with the above characteristics and considering the mean square deviation from the regression was identified as the least desirable line in terms of grain yield stability.
Conclusion: Given the high and stable yield of the lines 18 (FLIP09-251C) and 17 (FLIP11-203C), These two lines demonstrated the necessary capability for use in breeding programs and may be considered new varieties adapted to rain-fed conditions.
کلیدواژهها [English]
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