棉 花 学 报 Cotton Science 2006，18(5)：264-268 Influences of Boll Shading on Fiber Color and Fiber Quality of Colored Cotton Abstract：Colored cotton is a kind of cotton with natural color in its fiber. But the poor fiber quality and lower lint percent of the colored cotton restrict its production and commercial utilizing. In recent years，some research has been done on the improvement of the cultivars of colored cotton，and some progresses have been acquired. But the limited color types and the instability of the fiber color of some varieties are the obstacle for development of colored cotton. The main factors which influence the color of the cotton fiber have not been illuminated. In this article，two brown lines (B263S08 and brown 1-61)，two green lines（CC28 and S9708），and white fiber control TM-1 were grown and investigated in Anyang，Henan，China in 2004.The intraday flower of every line was tagged and covered with the black bag from-5 to 55 day post anthesis (DPA) respectively. After their bolls opened completely，the fiber was picked up and the fiber color observed. The MICROTEK Phantom 9800XL scanner was used to measure the value of redness，greenness，blueness in the fiber of each treatment by the parameters of r/(g+b)，b/(r+g)，g/(r+b). The fiber samples was also sent to test the fiber quality on the HVI900. The data was analyzed by SPSS 11.0.
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