大花蕙兰与墨兰杂交结实率研究初报

Preliminary Study on the Fruit Set of Cross-Pollination between Cymbidium hybridium and C.sinense

取3个大花蕙兰品种与1个墨兰品种进行自交与杂交。共设计10个组合,成功获得4个杂交组合;共授粉257朵花,成功获得21个果荚,结实率为8.1%。大花蕙兰与墨兰杂交正反交的结实率差异不大。各组合果荚生长曲线走势大致相同,授粉后10～12d,子房开始膨大,并于60～80d趋于平稳。大部分落果于授粉后30d内发生,部分于生长中后期黄化脱落,双亲遗传物质的不协调性及栽培管理可能是重要影响因素。

3 cultivars of C. hybridium and cross-bred. 21 fruits of 4 cross-combinations 1 cultivar of C. sinense were chosen to self-bred and were attained successfully from 257 pollinated flowers of 10 combinations. The average fruit set was 8.1%. The mean fruit set of reciprocal cross between C. hybridium and C. sinense has little difference. The trends of fruit growth curve of each combinations were in essence the same. The ovaries inflated after pollination 10 - 12 days and the size of capsule tended to stable between 60 and 80 days. Most of fallen fruits dropped within 30 days after pollination, but some fallen fruits yellowed and dropped in mid-later growing period. The incoordination of parents＇ genetic material and the cultivation management were important factors to the fruit set.