用胚珠作外植体培养棉纤维时，胚珠成为纤维的发育框架。选择合适发育状态的胚珠作外植体，以及在培养过程中该框架是否能被诱导至适应于纤维继续生长的发育程序中去，会在很大程度上影响纤维的质量。本研究已获得平均长度为田间的８２．１％、强度为７１．１％的离体纤维。对各种培养系统中的框架的研究证明：尚处于异养状态的胚珠在最佳培养基中，最易被诱导作出此种适应性调整，具体表现在：培养过程中胚的早期败育，使珠被成为框架主体，并进入一种异常生长状态。具体描述了最佳培养系统中框架的异常生长所形成的结构，分析了该结构与纤维发育的关系。 When ovules are used as explants to culture cotton fibers, ovules become the developmental framework for the fibers. Selecting the ovule of the appropriate developmental status as a explant and whether the framework can be induced to a developmental program adapted to the continued growth of the fiber during culture will greatly affect the quality of the fiber. In this study, isolated fibers with an average length of 82.1% and a strength of 71.1% were obtained in the field. Studies of the frameworks in various culture systems have demonstrated that ovules that are still heterotrophic are most likely to be induced to make such adaptations in optimal media by: early embryo abortion in culture, Beads become the main frame, and into an abnormal state of growth. The structure formed by the abnormal growth of the framework in the optimal culture system is described in detail, and the relationship between the structure and the fiber development is analyzed.