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棉花体细胞培养再生植株存在大量的生理变异和可遗传变异,从中分离到一个性状稳定的花器变异体(CHV1)。从花器官形态特征和表面显微特征分析,该变异体的所有花器官都变成了苞叶状器官,但中央数片叶状器官的基部有胎座和胚珠着生。变异体每朵花有苞叶3-7片,苞叶状器官19-41片。苞叶状器官在花梗上的排布介于“轮”与“螺旋”状之间。据花器发育理论和变异体花的生长特性推测,该变异体中控制花器发育的A、B和C功能皆失活。对造成该变异的可能机理和棉花花发育模式进行了分析。该变异材料对研究棉花花发育和体细胞无性系变异的机理有一定价值。
There are a lot of physiological and heritable variation in cotton somatic cell culture regenerated plants, and a stable flower variant (CHV1) was isolated from it. From the morphological and microscopic features of the floral organs, all the floral organs of the mutant became bract organs, but the basal parts of the leaf parts of the central part had placentae and ovules. Variants each flower has 3-7 leaves husk, bracts leaf organs 19-41. Husk-shaped organs in the pedicel arrangement between the “round” and “spiral” shape. According to the theory of floral development and the growth characteristics of the mutant flower, it is inferred that the functions of A, B and C which control the floral development are inactivated in this variant. The possible mechanisms responsible for this variation and the cotton flower developmental patterns were analyzed. This mutant material has some value for studying the mechanism of cotton flower development and somatic clonal variation.