豆薯开花习性观察研究

豆薯是我国明末时期由美洲引种的作物之一。豆薯品种（系）开花习性观察结果表明,豆薯花序着生在主茎和分枝的叶腋上,在种子生产中主蔓的8～18节上形成花序,不同品种（系）第1花序着生部位（节间）有差别;不同品种（系）和同品种（系）不同生长条件下花序长度变化极大;将豆薯开花的过程划分为6个时期,花冠半伸期为去雄杂交关键时期;整株和每穗开花顺序多数由下部花序向上部逐渐开放,但相邻花序不同花簇上的花蕾可在同天开放;每天开花时间在10：00前基本结束。

Study on Observation of Habits of Jicama Flowering

Jicama is a kind of crop by the introduction of America in China＇s Ming period. Study on obseryation of the habits of jicama flowering results showed that the inflorescence borne in axil of main stem and branches ,the inflorescence forming racemes in 8-18 section of main vine in seed production ,and the first inflorescence of different varieties（lines）had difference in insertion position. Inflorescence length of different varieti.es （lines） and the same varieties （lines）under different growth conditions varied greatly. The blossom process of yam bean was divided into 6 periods and the corolla half extension period was the key period of emasculation hybridization. The flowering order of the whole plant and per spike were most gradually open from the lower part to the top ,but the different clusters of adjacent inflorescence buds in the same day could open in the same day. Blossom time in every day was before the end of 10：00.