Gossypium hirsutum L. in Xinjiang: The Relationship Between Cotton Boll Stalk Length and Yield and Fiber Quality

doi:10.11924/j.issn.1000-6850.casb17090082

Abstract

Abstract: To understand the relationship between cotton boll stalk length and the main agronomic traits, yield traits and fiber quality in Xinjiang, we conducted a comparative experiment for two years, investigated the main agronomic traits, yield traits and fiber quality of cotton varieties (lines), summarized the climatic data of the two years, and compared these with boll stalk length. The results showed that the cotton stalk length of different varieties had a negative correlation between the average maximum temperature in the main growth period of June-August, and a positive correlation with the average minimum temperature and average sunshine time. The boll stalk length had a positive correlation with the number of effective branches, the number of boll per plant, the first node and the height of the first node, but it had a negative correlation with plant height and invalid branch. The boll stalk length had a positive correlation with lint percentage, branch number and equivalent yield, but it had a negative correlation with single boll weight. The boll stalk length had a positive correlation with the average length of the top half fiber and micronaire, it also had a roughly positive correlation with the evenness index. The boll stalk length of 50% test materials had a positive correlation with the fiber breaking strength, and the other half showed negative correlation.

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