棉 花 学 报     Cotton Science    2009，21(1)：34-38

Inheritance of Red Leaf and Green Fiber in Cotton and Their Effects on Yield and Fiber Quality
FAN Xiao-ping^1,2, FAN Bo-hong², XU Zi-qin¹, YANG Wei-cai^3*
(1.College of Life Science, Northwest University , Xi'an 710069, China; 2.Institute of Cotton Research , Shanxi Academy of Agricultural Sciences , Yuncheng , Shanxi 044000, China; 3.Institute of Genetics and Developmental Biology , The Chinese Academy of Sciences , Beijing 100101, China )

Abstract：To provide insights into improvements in yield and fiber quality of colored cotton, the experiment for investigating the inheritance of naturally colored cotton was carried out. It was indicated by a comprehensive genetic analysis on natural red leaf, green lint and fuzz, traits of red leaf and green lint were controlled by one pair of genes incomplete in dominance on non-homologous chromosomes, respectively. Green fuzz was controlled by one pair of complete dominant gene and located at the same chromosome with green lint traits, and their genetics distance was 1.26 cM . The result showed that the lint and fiber length of green fiber plant was significantly less than that of white fiber plant analyzed by t tests, while red leaf had no significant influence on yield or fiber quality. It was suggested that green fiber gene played an important role in fiber quality. Therefore, combination studies of cellulose synthesis and color forming in fiber are necessary to improve fiber color and quality of colored cotton.
Key words：cotton; red leaf and green fiber; chromosome; gene; fiber quality; yield
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