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Chinese Agricultural Science Bulletin ›› 2025, Vol. 41 ›› Issue (20): 10-17.doi: 10.11924/j.issn.1000-6850.casb2024-0590

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Early Maturing Cotton Varieties in Regional Trial of Jiangsu Province: Comprehensive Analysis of Lint Yield Traits and Testing Sites Discrimination

ZHAO Mingming(), DU Furong, HU Xinyan, LI Ke, CHEN Xiaoguang   

  1. Xuzhou Institute of Agricultural Sciences in Xuhuai Area of Jiangsu Province, Xuzhou, Jiangsu 221131
  • Received:2024-09-12 Revised:2024-11-15 Online:2025-07-15 Published:2025-07-21

Abstract:

In order to scientifically evaluate the yield, stability and adaptability of new early-maturing cotton varieties, as well as the discrimination and representativeness of the testing sites in Jiangsu Province, GGE biplot was used to analyze the lint yield data of the early-maturing group of varieties participating in the regional cotton trials in Jiangsu Province from 2018 to 2019. The results showed that the lint yield of the tested varieties was affected by genotype, environmental effect and genotype-environment interaction effect, among which environmental effect had the highest contribution rate (86.26 % in 2018 and 89.28 % in 2019). 'Zhongmian 425' showed the best yield in the two-year experiment, and had good stability and wide adaptability. In 2018, 'Xiang FZ031' had the best yield stability, 'Xumian 638' and 'Zhongmiansuo 50' had outstanding stability in 2019, and 'Simian 1035' had the most extensive adaptability in 2019. The evaluation of test sites showed that 'Xuzhou' (2018) and 'Dafeng' (2019) had the best variety discrimination and regional representativeness. The comprehensive analysis shows that 'Zhongmian 425' is an ideal variety with excellent comprehensive traits, which could be used as an important reference for the breeding and regional distribution of early-maturing cotton varieties in Jiangsu Province.

Key words: cotton, GGE biplot, productivity, stability, adaptability, regional trial