Characteristics of Cotton Fiber Quality Development in High Quality Upland Cotton

棉花学报 Cotton Science 2005，17(6)：343-347

Characteristics of Cotton Fiber Quality Development in High Quality Upland Cotton
ZHOU Gui-sheng¹，FENG Chao-nian¹，ZHOU Qing²，GU Wei-ju³，YANG Wan-yu¹，ZENG Yue-song
(1.Key Laboratory of Jiangsu Provincial Crop Genetics and Physiology of Yangzhou University，Yangzhou 225009，China；2. Huaiyin Institute of Technology，Huaiyin 223001，China；3.Qidong Agricultural Bureau，Qidong 226200，China ) 

Abstract：With Sumian 16 as control， the characteristics of fiber quality development of high quality upland cotton (G.hirsutum L.) Kemian 1 and Yumian 1 were studied. Compared with Sumian 16，rapid fiber elongation duration of Kemian 1 and Yumian 1 was slightly longer，and elongation rate during this period was significantly higher. Rapid fiber strength growth rate was also higher than that in Sumian 16. The cellulose content in cotton fiber increased slightly within 17 DPA(days post anthesis)，increased rapidly after 17^thday，and reached the peak at about 45 DPA and became stable. IAA content in cotton fiber in Kemian 1 and Yumian 1 was higher than that in Sumian 16，which was beneficial to fiber differentiation and elongation. ABA content in fiber in Kemian 1 and Yumian 1 at 17 DPA was also higher than that in Sumian 16，which benefited the transformation from fiber elongation growth to secondary wall thickening. The ratio of ABA and IAA at 24 DPA was higher in Kemian 1 and Yumian 1， which was also beneficial to secondary wall thickening.
Key words：high quality cotton；fiber quality development；endogenous hormones
[Full Text, 2258KB]