论文部分内容阅读
通过种间杂交可以获得丰富的变异类型,创造许多新的种质资源。通过对芥菜型油菜和白菜型油菜种间杂交后代群体进行分析,研究杂种后代遗传变异规律。芥白杂种后代群体以偏白菜型和中间型植株为主,其余为偏芥菜型和其它新类型植株。随着自交世代的增加,花粉育性逐渐恢复,在BC1F3代已经趋于稳定。杂种后代变异广泛,还出现黄籽、自交亲和材料,且都是可遗传的。BC1F4群体叶色变异显著,SPAD值在10.6~75.0之间变动,还出现叶色以及花器官突变体。芥白种间杂种后代群体变异丰富,拓宽了白菜型油菜的遗传基础。
Through interspecific hybridization can get rich variation types, creating many new germplasm resources. Through the analysis of the interspecific hybrid progenies of Brassica juncea and Brassica campestris, the genetic variation of the offspring of hybrids was studied. Chinese white mustard hybrids are dominated by Chinese cabbage and Chinese cabbage and the rest are Chinese mustard and other new types of plants. With the increase of selfing generations, pollen fertility gradually recovered and became stable in BC1F3 generation. Varieties of hybrids vary widely, but also appear yellow seeds, self-compatible materials, and are heritable. Leaf color variation of BC1F4 population was significant, SPAD value varied from 10.6 to 75.0, and leaf color and flower organ mutant appeared. The population of mustard white interspecific hybrids is rich in variation and broadens the genetic basis of Brassica campestris.