Analyse de la stabilité des performances de rendement du blé dur (Triticum durum Desf.) sous conditions semi-arides

Biotechnologie, Agronomie, Société et Environnement

关键词: Triticum durum;    stability;    semi-arid;    performance;    genotype x year interaction;    indices;   

DOI  :  

来源: DOAJ

【 摘 要 】

Stability analysis of yield performances of durum wheat (Triticum durum Desf.) under semi-arid conditions. Analysis of multi-seasons trials to evaluate and recommend varieties is an important step in plant breeding programs. This analysis focuses on both genotypic stability and performances. This contribution compares several approaches to measure yield stability using yield data of 15 durum wheat genotypes evaluated during six years under semi-arid conditions. The results showed significant yield differences among entries and a change of the genotypic rank across years, suggesting the presence of the genotype x year interaction. The stability approaches were grouped into two groups, representing agronomic concept of stability (Pi, Bot, Srang, Si(2), Si(3), bi) and biological concept of stability (Wi and S2di). The first group combines information on yield potential and stability and identifies two stable and high yielding genotypes: Cyrus1 and Heider/Martes//Huevos de Oro. While the second group focuses only on stability and showed that Belikh2 and Mrb16/Ente//Mario were the most stable genotypes. These results suggest the use of the indices of the first group to improve both stability and yield potential. However, in cases where stability is of paramount, it is advisable to use the statistics of the second group.

【 授权许可】

Unknown