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Stability parameters and performance of interregional crosses in durum wheat (Triticum durum Desf.)

Stability parameters and performance of interregional crosses in durum wheat (Triticum durum Desf.)

Tag. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik 76(3): 438-442

Twelve durum wheat varieties originating from 3 ecologically diverse regions and their 48 intergroup crosses were evaluated for stability of performance with respect to grain yield and certain component traits. The linear component of the genotype-environment interaction was revealed for grain yield, 100-grain weight and plant height, non-linear for tiller number whereas for grains per spike both components were equally important. However, except for tiller number, the linear component appeared to be contributing to a large extent towards the prevalent interactions. NP 404, Bijaga Yellow and Giorgio VZ 331 depicted stable performance for grain yield. However, considering all the attributes, the parents NP 404, Bijaga Yellow, Anhinga 's' and Mexicali 75 and hybrids NP 401 x Mexicali 75, NP 404 x Anhinga 's', NP 412 x Mexicali 75, NP 404 x Gerardo VZ 466 and Anhinga 's' x Capeiti appeared promising. The Mexican group as a whole exhibited a more stable performance than the other two evaluated groups. Compensating shift among the component characters was evident in the case of parents as well as hybrids and stability of performance appeared to be under genetic control. Effective utilization of these two aspects through introduction in otherwise desirable varieties has been advocated.

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Accession: 006470311

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PMID: 24232210

DOI: 10.1007/bf00265346

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