若干枇杷属植物的营养与生殖生长的物候期观察

对6种国内和4种东南亚原产的枇杷属植物营养生长与生殖生长物候期进行观察。结果表明:1)各种枇杷均抽春、夏梢,秋、冬梢因种而异;台湾枇杷春夏秋季均可抽两次梢,冬季只抽一次梢;其他国内原产种在抽梢期各抽一次梢,椭圆和齿叶枇杷一般无秋梢。除椭圆托叶枇杷无冬梢外,其他东南亚原产种每季至少抽一次梢。2)花期无法截然分为秋冬季和春季两种间断类型,而是呈现"连续"变化;台湾枇杷年际间花期差别较大,不符合"春季开花"的分类。3)栎叶枇杷老挝变种冬花春实,其他3个东南亚种虽能开花,但坐果难,原因尚需查明。

Observation of Vegetative and Reproductive Growth Phenophase on Several Eriobotrya Plants

In this paper, the vegetative and reproductive growth phenophase often Eriobotrya plants （ six native to China and four native to Southeastern Asia ） were investigated and described. The main results showed, firstly, all the observed species sprouted shoots in spring and summer while only some species would sprout during autumn and winter. The shoots ofE.deflexa Nakai sprouted twice in spring, summer and autumn, but only once during winter. The other Er~obotrya plants from China basically sprouted once in their sprouting season. Generally speaking, E.eUiptica Lindl. and E.serrata Vidal never sprouted during autumn. All the Southeastern Asia Eriobotrya plants generally sprouted once or more times in each season except E.stipularis Craib, which never spouted during winter. Secondly, blooming period could not be divided into two exactly interrupted types： fall-winter blooming type and spring blooming type, however, they shows the end-to-end blooming phenomenon by fall-winter blooming type and spring blooming type; The blooming period ofE.deflexa Nakai varies quite a bit in different years, which do not meet the ＇blooming in spring＇ type. Lastly, the other three species from Southeastern Asia bloom but difficult to set fruit, and the reason of this phenomenon needs further studies.