Agronomic Performance and Genotype × Moisture Conditions Interaction for Morpho-Physiological Traits in Durum Wheat-Crop Breeding, Genetics and Genomics-CSCIED科技核心评价数据库-手机版

Agronomic Performance and Genotype × Moisture Conditions Interaction for Morpho-Physiological Traits in Durum Wheat

Agronomic Performance and Genotype × Moisture Conditions Interaction for Morpho-Physiological Traits in Durum Wheat

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DOI	10.20900/cbgg20210002
刊名	Crop Breeding, Genetics and Genomics CBGG
年，卷(期)	2021, 3(1)
作者	Reza Mohammadi*,Ahmed Amri,
作者单位	1 Dryland Agricultural Research Institute (DARI), Sararood Branch, Agricultural Research, Education and Extension Organization (AREEO) , Kermanshah, 6744111317, Iran ; 2 International Center for Agricultural Research in the Dry Areas (ICARDA), Rabat, 6929, Morocco ;
Abstract	Fourteen promising durum wheat lines, representing the elite durum germplasm for rainfed conditions, along with three check cultivars were assessed under drought and irrigated conditions for three growing seasons. The main objectives were to (i) evaluate the agronomic performance of durum wheat genotypes under different moisture stress conditions (mild, moderate, severe) and (ii) investigate the traits significantly contributing to drought tolerance. Combined ANOVA across environments for grain yield and the traits studied showed significant differences (P < 0.01) for genotype, year, moisture condition, year × moisture condition, genotype × year, and genotype × moisture condition interactions. There were differences in trait associations across the years and moisture conditions showing that the traits were significantly affected by the year and moisture conditions effects. Heading date, plant height, spike length and SPAD-reading with low ratio of σ2ge/σ2g showed a high value for heritability. Genotypes showed specific adaptation to different environmental condition as supported by significant (P < 0.01) for genotype × moisture condition interaction. Heading date, peduncle extrusion, plant height, days to maturity and 1000-kernel weight with lower genotype × moisture interaction than grain yield, were the traits contributing the most to drought tolerance. It is concluded that these traits could aid in the selection of durum wheat subject to moderate and severe stress, particularly in early generations. Under severe water stress condition, earliness to heading was an important drought escape mechanism, but inherent drought tolerance could be inferred from responses of a few genotypes. To determine effects of GE interaction on grain yield, data were subjected to GGE biplot analysis, which identified breeding lines G16, G12, G15 and G10 as the most stable and high yielding genotypes across different moisture stress conditions that can be used in convergent durum breeding program to develop drought tolerant varieties. The breeding lines which out-yielded the check cultivars are the stand out as the best promising germplasm but present different sets of favorable traits under stressed or favorable conditions.
KeyWord	durum wheat; drought stress; agro-physiological traits; heritability; genotype × moisture conditions
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引用本文

Reza Mohammadi*,Ahmed Amri. Agronomic Performance and Genotype × Moisture Conditions Interaction for Morpho-Physiological Traits in Durum Wheat, Crop Breeding, Genetics and Genomics. 2021; 3; (1). https://doi.org/10.20900/cbgg20210002.

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