七叶树和白玉兰种子休眠机理分析

Study on Dormancy Mechanism of Seeds of Aesculus chinensis and Magnolia denudate

测定七叶树、白玉兰的完整种子和破皮种子的吸水量、透气性并对种子不同组织提取物进行白菜籽发芽试验,同时对七叶树、白玉兰种子进行层积处理并解剖观察。结果表明:七叶树种子休眠的原因为种胚分化不完全和种皮透气性差、含有少量发芽抑制物质;白玉兰种子休眠的原因为种胚发育不全以及果肉所含抑制物。

Determine the water permeability and air permeability of Aesculus chinensis and Magnolia denudate seeds,include intact seed and scarified seed; experimentation on sprount of zhe cabbage seed of some material of the seeds; the dormancy of styatification on the Aesculus chinensis and Magnolia denudate seeds,dissect and observe,results showed： the reason of the Aesculus chinensis seed dormancy are： the embryonic differentiation not completely、the seed coat holds back the gas exchange、contained little material that holds back the sprout of the seed,the reason of the Magnolia denudate seed dormancy are： fruit shell contained some material that holds back the sprout of the seed、the embryonic differentiation not completely.