南蛇藤(Celastrus orbiculatus Thunb)种子形态与萌发特征的初步研究

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在实验室条件下,对南蛇藤(Celastrus orbiculatus Thunb)种子的形态特征、千粒重、生活力、吸水速率及萌发特征进行了初步研究。结果表明:南蛇藤种子平均大小为0.413 cm×0.220 cm×0.194 cm(长×宽×厚),千粒重约8.269 g;自然条件下产出有活力种子比例为69%左右;种皮具有较好的透水性,但因其较厚、硬的外种皮束缚了种胚的生长,影响其透气性,从而引起种子休眠;破种皮与3 mmol/L的赤霉素同时处理种子可使种子的发芽率达到29.33%,而完整种子同时用赤霉
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