江南槐开花授粉特性的研究

文章对江南槐(Robinia hispida L.)的开花持续期、花器特征、花粉活力、结实率等进行了初步研究。结果表明:江南槐5月初进入花期,一直到8月下旬结束,花期长达100d左右;单个花序持续开放7～10d,单个花朵持续开放3～5d。江南槐树冠开花顺序为由中部开始,渐次向上部和下部发展;单个花序开放顺序由基部向顶端逐次开放。江南槐是两性花,雄蕊共10枚,为九连体一离体的二体雄蕊,雌蕊1枚,柱头被有白色绒毛,雄蕊先于雌蕊成熟。江南槐新鲜花粉活力最高为87%,而结实率为0。

Study on Flowering and Pollination Characteristics of Cassia Sophera

The flowering period、the characteristics of floral structure、pollen viability、fructification rate in Robinia hispida L.were studied in this article.The results were as follows:The blooming period was from early May to late August and lasted 100 days;Single inflorescence lasted 7-10 days and single flower lasted 3-5 days.Flowering sequence was from middle part to top and bottom part in a tree,and from bottom part to top part in a inflorescence.The flower was hermaphroditic flower with 10 stamens which included one part of 9 stamens and another part of 1 stamen and 1 pistil covered with white villuses;Stamens matured before pistil.Pollen viability was high as 87% but the rate of fruit setting was 0.