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棉 花 学 报 Cotton Science 2008，20(3)：239-封三
Dynamics of Carbohydrate and Pigment Content During Fiber Development in Brown-colored Cotton Abstract：One of the most distinctive points of brown cotton fiber is a lot of pigment accumulation during fiber development compared with white cotton fiber. So, dynamics of carbohydrate and pigment content during fiber development was characterized using dark brown, brown, light brown, and white fiber cotton as plant materials. Results showed that white cotton fiber had the hightest soluble sugar and sucrose content from the day of anthsis to 10 DPA (days post anthesis). Brown and dark brown cotton fiber had lower sugar content, and their sugar content was similar at the same development stage. From 15 DPA on, total soluble sugar and sucrose content both in brown and white fiber was close. As for fructose content, variation between brown and white cotton fiber was not obvious and showed a decline trend during whole fiber development stage. Pigment content in cotton fiber was dark brown>brown>light brown>white from anthesis to fiber maturation indicating that carbohydrate would be partially consumed due to pigment synthesis in brown cotton fiber.
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