Adaptability and Stability Comparisons of Inbred and Hybrid Cotton in Yield and Fiber Quality Traits
文献类型： 外文期刊
第一作者： Shahzad, Kashif
作者： Shahzad, Kashif;Qi, Tingxiang;Guo, Liping;Tang, Huini;Zhang, Xuexian;Wang, Hailin;Qiao, Xiuqin;Zhang, Meng;Zhang, Bingbing;Feng, Juanjuan;Iqbal, Muhammad Shahid;Wu, Jianyong;Xing, Chaozhu
作者机构：
关键词： hybrid cotton; genotype by environment interaction; AMMI model; stability; adaptability; yield; fiber quality
期刊名称：AGRONOMY-BASEL （ 影响因子：3.417； 五年影响因子：3.64 ）
ISSN：
年卷期： 2019 年 9 卷 9 期
页码：
收录情况： SCI
摘要： Cotton (Gossypium hirsutum L.) is the most important fiber crop worldwide. Characterizing genotype by environment interaction (GEI) is helpful to identify stable genotypes across diverse environments. This study was conducted in six environments to compare the performance and stability of 11 inbred lines and 30 intraspecific hybrids of cotton. Analysis of variance using the additive main effects and multiplicative interaction model revealed that genotype (G), environment (E), and GEI had highly significant effects on yield and fiber quality traits. Mean comparisons among genotypes showed that most hybrids had higher means for yield and fiber quality traits than inbred genotypes. Additionally, a larger portion of the total variability in yield traits was explained by E than G and GEI. However, G and GEI combined contributed more to the total variance in fiber traits than E. The first three interaction principal components explained the majority of GEI in all traits under study. For most traits, the environments were not clustered together, implying contrasting interaction with genotypes. Stability measurements indicated that most hybrids showed more stable performance than inbred lines for all traits. The hybrids SJ48-1 x Z98-15 and L28-2 x A2-10 displayed both better performance and stability in yield and fiber quality traits. Our results show the importance of hybridization for improving cotton yield and fiber quality in a wide range of environments.
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