粗叶榕—爪哇榕小蜂共生体系的研究

粗叶榕是榕属灌木或小乔木 ,雌雄异株。一年到头皆有不同发育阶段的花序 ,序内开花同步 ,株内开花异步。雌花序有长柱雌花平均为 641 .2枚 ,雄花序中有短柱雌花 (瘿花 )平均为 488.2枚 ,自然状态下结实率和成虫率分别为 5 1 .3 7%和 3 6.1 1 %。榕小蜂科的爪哇榕小蜂是粗叶榕的传粉者 ,是共生体系的真正的互惠共生伙伴。二者在形态结构、生理功能上高度互适 ,粗叶榕必须依靠爪哇榕小蜂的传粉才能获得有性生殖 ;而爪哇榕小蜂又必须依赖粗叶榕的短柱头雌花作为繁殖后代的场所 ,才能获得种群的繁衍。

A study of symbioses between Ficus hirta and Blastophaga (B.) javana

Ficus hirta is dioecious,belongs to a kind of shrub or small tree in Subgenus Ficus. Its syconia blossom and bear fruit all year round,synchronously in syconia and asynchronously intra-tree. In the female syconium there are averagely 641.2 long-styled female flowers;in the male syconium averagely 488.2 short-styled(gall ones);under the natural condition its fruit-bearing and gall-producing rates are 51.37% and 36.11% respectively. Blastophaga (B.) javana is the pollinator of F. hirta and a legitimate companion of the mutualism system. They suit eath other quite well in structure and physiological function. F. hirta must depends on the pollination of Blastophaga (B.) javana to complete its sexual reproduction. Meanwhile the fig wasps are dependent upon the gall flower (short stigmas) of the fig,in which their eggs and larvae and pupa develop.