Acta Agriculturae Boreali-Sinica ›› 2025, Vol. 40 ›› Issue (S1): 263-269. doi: 10.7668/hbnxb.20196259

Special Issue: Cotton Plant protection

• Resources & Environment·Plant Protection • Previous Articles     Next Articles

Correlation Analysis Between Cotton Boll Blight Occurrence and Major Phenotypic Traits of Cotton

ZHAO Cunpeng1,2, YUAN Chen1,3, LI Dan1, ZHANG Xiaohui1,4, WANG Kaihui1, LIU Suen1, ZHANG Haina1, GUO Baosheng1, GENG Junyi1, LE Xiuhu3   

  1. 1 Institute of Cotton,Hebei Academy of Agriculture and Forestry Sciences,Shijiazhuang 050051,China
    2 College of Plant Protection,Hebei Agricultural University,Baoding 071000,China
    3 School of Landscape and Ecological Engineering,Hebei University of Engineering,Handan 056000,China
    4 College of Food Science and Biology,Hebei University of Science and Technology,Shijiazhuang 050000,China
  • Received:2025-06-10 Published:2025-12-29

Abstract:

Cotton boll blight is one of the major diseases in the cotton areas of the Yellow River and Yangtze River basins in China.Its incidence rate and harmfulness rank first among cotton boll blight.This study used 10 cotton varieties(lines)suitable for planting in Hebei Province with significant genotype differences as experimental materials to explore the occurrence of cotton boll blight in different regions of Hebei Province and its relationship with 15 phenotypic traits of cotton.The results of field experiments in 2023 and 2024 showed that there were differences in cotton boll blight among years,regions and varieties.The occurrence degree of cotton boll blight in 2024 was higher than that in 2023,and that in Hengshui area was lower than that in Handan and Shijiazhuang.Jimian 30 had the strongest resistance to cotton boll blight,and the incidence of cotton boll blight was 8.75%.The second was Line 322,and the incidence of cotton boll blight was 9.69%.The resistance of Ji 1316 to cotton boll blight was the worst,and the incidence of cotton boll blight was 13.48%,which was significantly higher than that of other varieties.The occurrence degree of cotton boll blight was significantly negatively correlated with the height of the first fruit branch,and significantly positively correlated with the number of cotton boll blight,fruit branch node,fruit branch length,first/second fruit branch angle,plant height,fruit branch number and boll number per plant of the first/second/third fruit branch,and significantly positively correlated with the angle of the third fruit branch.There was a very significant positive correlation with the flowering period and a significant positive correlation with the length of the whole growth period.Therefore,in the breeding process of cotton boll blight resistant varieties,the late flowering period,the high height of the first fruit branch and the short length of the fruit branch should be taken as important selection indicators.From the perspective of high-yield and high-quality cultivation,proper late sowing,whole-process chemical control,shaping the ideal plant type with high first fruit branch height,medium fruit branch length,and compact plant type,and improving the permeability of cotton fields can not only reduce the occurrence of cotton boll blight,but also be more conducive to mechanized harvesting.

Key words: Cotton, Cotton boll blight, Phenotypic character

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Cite this article

ZHAO Cunpeng, YUAN Chen, LI Dan, ZHANG Xiaohui, WANG Kaihui, LIU Suen, ZHANG Haina, GUO Baosheng, GENG Junyi, LE Xiuhu. Correlation Analysis Between Cotton Boll Blight Occurrence and Major Phenotypic Traits of Cotton[J]. Acta Agriculturae Boreali-Sinica, 2025, 40(S1): 263-269. doi: 10.7668/hbnxb.20196259.

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