棉 花 学 报    Cotton Science   2010，22（5）：422-429

Genetic and Variation of Main Fiber Traits of the Germplasm with Different Boll Weight Types
PAN Zhao-e^1，2，HU Xi-yuan^1*，JIA Yin-hua²，SUN Jun-ling²，ZHOU Zhong-li²，HE Shou-pu²，PANG Bao-yin²，DU Xiong-ming^2*
（1.Northwest Agriculture and Forestry university of Science and Technology，Yangling, Shaanxi 712100，China；2. Cotton Research Institute of CAAS，Key Laboratory of Cotton Genetic Improvement，MOA，Anyang，Henan 455000，China）

Abstract: Six F₂ populations with same female parent S9708 as that of CCRI 48 and different male parents with different boll weight were made. Their parents, F₁ and F₂ populations were planted in 2006 while the F₂ population of CCRI 48 was also grown in 2005. Traits of boll weight, lint percentage and fiber quality in these populations were analyzed by using SAS 8.0 software. The result showed: All fiber traits were highly significant in all F₂ populations. The coefficients of variation for boll weight and micronaire were higher among the six populations. It indicated boll weight and fiber micronaire had a greater degree of genetic variation. The variation coefficients of lint percentage and fiber strength were 6%~9%. While the variation coefficients of fiber length, elongation and fiber uniformity were less. So the selection method for offspring of boll weight, lint percentage and fiber quality should be different. It is important to select the germplasm with big boll, high lint percentage, better fiber quality during the procession of parent selection in the heterosis.
Key words: cotton; big boll; CCRI 48; fiber    [Full Text, 473KB]