黄皮种子发育中后期ABA含量的动态变化

The Dynamic Changes of ABA Content in Chinese Wampee Seed during Median and Late Developmental Stages

黄皮花后５５～８０ｄ，种子鲜重持续增加，含水量逐渐下降。成熟时含水量仍高达４９．６％，子叶和胚轴中ＡＢＡ含量分别只有花后５５ｄ的２２．４％和１１．７％；顽拗性种子脱水敏感性的原因可能是种子成熟时的高含水量和低ＡＢＡ含量。

During 55～80 days after anthesis of Chinese Wampee,the fresh weight of seed increases continuously and the moisture content decreases gradually. When seeds get matured,the moisture percentage is as high as 49.6%,the ABA content of cotyledon or axis is only 22.4%or 11.7%of that during 55 days after anthesis.