慈姑种子发芽特性研究

Studies on Seed Germination Characteristics of Arrowhead

以野生型慈姑巢湖野慈、棠梨店慈和栽培型慈姑浙江农大慈、南宁家慈为试材,从贮藏方法、光照、温度等方面对慈姑种子萌发特性进行了初步探讨。结果显示:慈姑种子需要浸水贮藏,低温水浸贮存更有利于种子萌发,干燥贮存导致种子不能萌发;光照对慈姑种子萌发有明显促进作用;慈姑种子最适发芽条件为25℃、12h/12h(L/D);不同基因型慈姑种子的发芽率存在差异,野生型慈姑明显高于栽培型慈姑。

We carried out preliminary discussion about the effects of storage method, sun light and temperature on germination characteristics of arrowhead （ Sagittaria sagittifolia L. ） seed, using 4 kinds of genetic arrowhead varieties, including 2 wild-type varieties ＇Chaohuyeci＇ and ＇Tanglidianci＇, and 2 cuhivated varieties ＇ Zhejiangnongdaci＇ and ＇ Nanningjiaci＇ as experimental materials. The result showed that arrowhead seed need to be kept in water, especially in low temperature water, for storage, and dried storage would lead arrowhead seed losing germination ability. Light could significantly improve arrowhead seed germination. The most appropriate conditions for seed germinate were 25 ℃ and 12 h/12 h （ L/D ） . There existed differences in germination rate of different types of arrowhead seed, the germination rate of wild types were significantly higher than that of cultivated types.