摘要
在观察研究半夏花器形成及构造特点后,发现半夏为雌雄同株,但不同时期成熟的异花授粉植物,如改善栽培管理条件,辅之人工授粉便能提高结实率0.5～4.7倍,这对于提高半夏繁殖率、建立种子基地、加速半夏生产有实际意义。
The inflorescence of medicinal plant Pinellia ternata (Thunb.) Breit occurs when its tuber reachs 0.5g. With continuous adding to the tuber weight, the number of inflorescences and rate of seed-setting increases. However, the tuber beingover 5 g, it shows a inverse relationship.Pinellia ternata is of a naturel cross-pollination, heterodichogamy plant. The reduction in the number of pollination insects due to the application of insecticids in the field results in low rate of seed-setting, generally less than 20％.It is a suitable stage for pollination when the upper part of the flower is open, and the lower part still holds together. Sufficient moisture content in the soil is an essential factor to improve the pollination effect. The rate of seed-setting can be increased by 0.5～4.7 times by means of artificial supplementary pollination, thus it is of practical significance to establish seed-breeding field.
关键词
雌雄异花
大人授粉
结实率
heterodichogamy
artificial pollination
increasing the Rate of seed-setting
