芦笋雌雄花发育过程的解剖学观察

Anatomical observation on the developmental stages of Asparagus officinalis L. staminate and pistillate flowers

为了研究并确定芦笋(Asparagus officinalis L.)两性完全花诱导和差异基因分离的关键时期与花蕾大小的关系,采用石蜡切片技术,对不同直径芦笋花蕾的性别分化过程进行了形态学观察。结果表明:在雄株和雌株的花器官发育早期,两者都有雄蕊和心皮。在随后的发育过程中,雄蕊和心皮分别在雌性和雄性个体中停止发育。雄花花蕾直径2.0mm,是芦笋雄花雌性器官发育停滞的关键时期,为雄性两性完全花诱导和性别分化差异基因分离时期的选择提供了参考。

To study and ascertain the relations among Asparagus officinalis L. bisexual flowers in- duction, differential gene segregation critical period and bud size, paraffin section method was applied to observe Asparagus flower buds of different diameter morphologically. The results showed that sta- mens and carpel are initiated in both staminate and pistillate flowers in prophase. However, as flowers developing, stamens and carpel stopped growth both in male and female individuals. It＇s the critical period for male Asparagus＇s bud when pistillate organs 2.0 millimeters. The results are referential for inducing gene segregation time of sex differentiation. in it stopped developing and it＇s diameter was male bisexual flowers and choosing differential