بررسي پايداري عملكرد دانه لاين هاي اميدبخش جو در مناطق معتدل استان خراسان رضوي

Investigating the yield stability of barley promising lines in temperate regions of Khorasan Razavi province

هدف از اين تحقيق ارزيابي ژنوتيپها، محيطها و تجزيه آثار متقابل ژنوتيپ بود. آزمايشات در دو (AMMI) اميدبخش جو با استفاده از تجزيه مدل اثرات اصلي افزايشي و ضرب پذير امي 1394 به مدت دو سال زراعي اجرا شدند. نتايج - ايستگاه تحقيقات كشاورزي نيشابور و طرق مشهد طي سالهاي 96 حاصل از تجزيه امي بر روي عملكرد دانه نشان داد كه آثار اصلي ژنوتيپ، محيط، آثار متقابل آنها و دو مؤلفه اول اثر متقابل معنيدار بودند. نمودارهاي بايپلات امي قادر به تفكيك ژنوتيپهاي پايدار و محيطهاي با قدرت تفكيك بالا از محيطهاي ضعيف بودند. در محيطهاي مورد بررسي بر اساس نتايج تجزيه امي و پارامتر هاي پايداري مورد مطالعه، ژنوتيپهاي 1 و 10 با عملكرد بالاتر از ميانگين داراي بيشترين پايداري بودند در صورتيكه ژنوتيپهاي 19

The objective of this study was to evaluate genotypes (G), environments (E) and to analyze genotype by environment (GE) interactions on the seed yield of 20 barley promising lines by the additive main effects and multiplicative interaction(AMMI) model. The trials were conducted at two research stations (Neyshabur and Torogh Mashhad) for two successive years (2015-2017). The result’s of AMMI analysis for seed yield indicated that the Genotype main effects, environment, and GE interactions as well as two first interaction principal components (IPCA1-2) were significant. AMMI biplot was able todistinguish stable genotypes and environments with high and low genotype discrimination ability. The genotypes 1 and 10 with higher mean yield than total mean were to be most stable genotypes, while the genotype 19 and 2 with the highest contribution to GE interaction, were to be the most instable. The result of recommended genotypes based on AMMI analysis showed that the genotypes 18, 9 and 1 were highly adapted to Mashhad and genotype 20 was adapted to Neishabour environments during this study