Fiber Yield and Quality Traits and Their Correlation Analysis of Cotton Chromosome Segment Substitution Lines Population (BC7F2) from Gossypium hirsutum L.× Gossypium barbadense L.

doi:10.11924/j.issn.1000-6850.casb17010007

Abstract

Abstract: The aims are to reveal the relationship between fiber yield and quality traits of cotton chromosome segment substitution lines (BC7F2), and select the new materials with excellent fiber quality. The cotton chromosome segment substitution lines (BC7F2) from Gossypium hirsutum L.× Gossypium barbadense L. were used as materials. Fiber yield and quality traits of advanced backcross populations BC7F2 were evaluated and analyzed using partial correlation. The results showed that the average values of the traits in the populations were near to that of the recurrent parent‘Zhongmiansuo 36’, and the abundant genetic variations existed in populations. The transgressive segregation over the recurrent parent‘Zhongmiansuo 36’was 30.25%, 71.25%, 29.38% for fiber length, fiber strength and lint percentage, respectively. Boll weight was very significantly positive-correlated with fiber micronaire and fiber uniformity. Lint percentage was negatively correlated with fiber length and fiber strength of the top half, while lint percentage was very significantly negative-correlated with boll weight. Plenty of individual plants with superior fiber quality were selected. The average length of the top half fiber was more than 30.00 mm, and fiber strength was more than 31.00 cN/tex.

CLC Number:

S562

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