中文摘要：

以高品质的异常棉渐渗系J381和J415为母本。分别与苏棉12杂交，开展亲本P1、P2杂种F1。回交后代B1、B2等6个世代纤维品质性状编相关分析。结果。种质系J381和J415的纤维长度、比强度、麦克隆值、纺纱均匀性指数、回潮率等显著优于苏棉12。F1普遍为中亲值．B1偏向于J381或J415，B2偏向于苏棉12。亲本世代变异稍小。分离世代F2、B1、B2变异较大。编相关分析表明．有7个性状在各世代均表现出一致的极显著相关，即长度、整齐度、比强度、反射率、黄度等两两间呈极显著负相关。与麦克隆值、纺纱均匀性指数均为极显著正相关；麦克隆值与纺纱均匀性指数间为极显著负相关。

英文摘要：

Cotton （Gossypium spp） is the world＇s leading natural fiber crop. However. to meet theneeds of the textile industry for the desired combinations of fiber properties still is a big challenge for cotton breeders. Enhancing fiber quality properties may be an effective way of either introgression ofnew genes or new combinations of existing genes from wild cotton species. Germplasm lines J381 and J415 with the desired combination of fiber properties were developed through introgression from G. anomalum into （5. hirsutum during the past research. In the present study, partial correlation analy-sis was carried out to elucidate the relations among fiber properties, namely, length, strength, micronaire, length uniformity, elongation, short fiber index （SFI）, reflectance degree （Rd）, spinning consistency index （SCI）, brownness, fiber maturity, and moist-regain at each generation in J381 ×Sumian 12 and/or J415 ×Sumian 12. The results showed that there were significant negative relationship between each two of length, strength, length uniformity, Rd and brownness, and between micronaire and SCI, but significant positive between the former five and the latter two .