عنوان مجله
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Journal of Agricultural Sciences (Belgrade)
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چکیده
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Drought stress is the most important factor restricting crop
production in the majority of agricultural fields in the world. Durum wheat is
generally grown in arid and semi-arid areas and drought often causes serious
problems in its production. Fourteen durum wheat genotypes were evaluated under
semi-arid Mediterranean climatic conditions in two non-stressed and water-stressed
conditions. Data on fourteen agronomic traits are presented to assess the
phenotypic diversity and to investigate the relationships between grain yield and
other important yield components in durum wheat. The coefficient of variation
(CV) for all the genotypes ranged from 0.71% to 17.62% in non-stressed
environment and ranged from 1.38% to 23.70% in water-stressed environment.
Clustering based on durum wheat genotypes separated the measured traits into
three main groups under non-stressed environment. Peduncle length, agronomic
score and plant height were the most related traits with grain yield. Such clustering
in water-stressed environment indicated that growth vigor, thousand kernel weight,
test weight or hectoliter and agronomic score were the most associated traits with
grain yield. Cluster analysis assigned the durum wheat genotypes to at least two
major groups in non-stressed conditions and three major groups in water-stressed
conditions. Therefore, it seems that for improving grain yield performance in nonstressed
conditions, genotypes G1, G3, G4, G6, G8 and G13 and in water-stressed
conditions, genotypes G3, G8, G10 and G14 are good candidates. Finally, for
improving grain yield performance in both humidity conditions, genotypes G3 and
G8 can be used
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