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本研究对高产推广品种、高强优质纤维种质系（带有异常棉血缘）及其杂种Ｆ１、Ｆ２和回交世代的纤维品质、纤维超分子结构参数进行相关分析，结果表明：①性状间的简单相关关系与偏相关关系结论不一，偏相关能更真实地反映各变数之间的相关关系；②纤维比强度、马克隆值、伸长度两两之间以及微原纤角与取向度间的相关不受遗传背景影响，而其它性状间的相关关系都随遗传背景不同而不同，回交世代多数偏向回交亲本，Ｆ１和Ｆ２则表现偏向高产型品种；③与纤维强度高度相关的微原纤角，在高产品种中表现为极显著的负相关，而在高强纤维种质系中表现为弱的正相关，据推测，这不但与遗传背景不同有关，还可能与纤维强度的变化范围有关；④成熟纤维结晶度与纤维比强度呈负相关，这一结果与前人结果不一致。据此提出了提高纤维强度的可能途径
In this study, we analyzed the fiber quality and fiber supramolecular structure parameters of high-yielding varieties, high-quality and high-quality fiber germplasm lines (with abnormal cotton blood margin) and their F1, F2 and backcross generations. The results showed that: The correlation between the simple correlation and the partial correlation is different, and the partial correlation can more truly reflect the correlation between the variables. (2) Between the fiber strength, the micronaire value and the elongation, and between the microfibrillation angle and the orientation degree Were not affected by the genetic background, while the correlations of other traits varied with different genetic backgrounds. The majority of backcross generations tended to be backcrossed parents, while F1 and F2 showed biased toward high-yielding varieties. (3) The micro- Fibril angle showed extremely significant negative correlation in high-yielding varieties and weak positive correlation in high-fiber quality germplasm. It is presumed that this is not only related to different genetic backgrounds, but also may be related to the range of fiber intensity Related; ④ The crystallinity of mature fiber and fiber strength was negatively correlated, this result is inconsistent with the previous results. Accordingly, a possible way to improve fiber strength is proposed