ACTA AGRICULTURAE BOREALI-SINICA ›› 2021, Vol. 36 ›› Issue (1): 95-101. doi: 10.7668/hbnxb.20191423

Special Issue: Cotton Hot Article

• Crop Genetics & Breeding·Germplasm Resources·Biotechnology • Previous Articles     Next Articles

Correlation and Genetic Analysis for Cotton Earliness, Yield and Fiber Quality Traits

JIA Xiaoyun1,2, WANG Hantao1, WEI Hengling1, YU Shuxun1   

  1. 1. Institute of Cotton Research of Chinese Academy of Agricultural Sciences, State Key Laboratory of Cotton Biology, Anyang 455000, China;
    2. Institute of Cereal and Oil Crops, Hebei Academy of Agriculture and Forestry Sciences, Hebei Laboratory of Crop Genetics and Breeding, Shijiazhuang 050035, China
  • Received:2020-11-27 Published:2021-02-28

Abstract: In order to study the molecular genetic basis of the interaction among the earliness, yield and fiber quality of upland cotton, a Recombinant inbred line(RIL) population was constructed with CCRI36 as the female parent and G2005 as the male parent. For 6 consecutive years, 13 characters related to the earliness, yield and fiber quality of the RIL population were investigated, and the correlation among the three types of characters was analyzed. The genetic basis was analyzed based on the results of QTL mapping. The results showed that the materials with better earliness had lower boll weight and poorer fiber quality;the materials with better fiber quality had a relatively poor yield character. A total of 494 QTL were detected, 68 QTL overlap regions affected at least two types of characters at the same time, including 11 regions that affected earliness, yield and fiber quality, 11 regions that affected earliness and yield, 39 regions that affected earliness and fiber quality, and 7 regions that affected yield and fiber quality. Only 24 of the 68 QTL-overlap regions had the same additive effect direction. In addition, 99 multi environment epistatic QTLs were detected, 45 of which overlapped with additive QTLs.

Key words: Gossypium hirsutum L., Earliness, Yield, Fiber quality, Correlation analysis, Genetic analysis

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Cite this article

JIA Xiaoyun, WANG Hantao, WEI Hengling, YU Shuxun. Correlation and Genetic Analysis for Cotton Earliness, Yield and Fiber Quality Traits[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2021, 36(1): 95-101. doi: 10.7668/hbnxb.20191423.

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