论文部分内容阅读
利用甘兰型油菜(Brassica napus ssp.Oleifera)的雄性不育性生产杂交种子是选育杂交油菜的主要途径.七十年代以来,国内外在这一研究工作上取得了较快的发展.在“三系”选育实践中,我们认识到:雄性不育系、保持系、恢复系及其杂种一代的形态差异,除了营养器官的差别外,尤其表现在花器官各部的形态、解剖结构上,而这个方面的研究报道不多.本研究以本所近年来初步育成的“三系”及F_1为材料,重复观察测定各材料的花药横剖面的显微结构,花器官各部形态量度,旨在探索与育性有关的花药显微结构,花器官各部形态指标及其后代遗传变异规律,为进一步开展杂交油菜选育研究提供依据.
Production of hybrid seeds by male sterility of Brassica napus ssp.Oleifera is the main way to breed hybrid rapeseed.From the 1970s, the research work at home and abroad has achieved rapid development. In the “three lines” breeding practice, we recognize that the morphological differences of male sterile, maintainer, restorer and their hybrids, except for vegetative organs, are especially manifested in the morphology and anatomy of each floral organ , But few researches have been reported in this field.In this study, based on the “three lines” and F_1 initially bred by our institute in recent years, the microstructure of anther cross sections, In exploring fertility-related anther microstructure, morphological indicators of various floral organs and genetic variation of their offspring, to provide evidence for further research on breeding of hybrid rapeseed.