鸡树条荚种子浸提液对小白菜种子萌发和幼苗生长的影响

通过研究鸡树条荚种子的种皮和胚乳的不同浓度甲醇浸提液对白菜种子萌发和幼苗生长及保护酶活性的影响，探讨鸡树条荚种子内源抑制物质的活性。结果发现，鸡树条荚种皮、胚乳中含有抑制白菜种子萌发及幼苗生长的物质，随着该物质浓度的增加，抑制作用更为显著；相同浓度的胚乳浸提液对白菜种子萌发及幼苗生长的抑制作用显著高于种皮浸提液。随着胚乳浸提液浓度升高，SOD酶活显著降低，丙二醛（MDA）含量持续增高。结果表明鸡树条荚种皮和胚乳均有抑制物质存在，鸡树条荚种子浸提物可能通过影响保护酶的活性进而影响白菜幼苗的正常生长。

Effects of Crude Extracts of Viburnum sargentii Seeds on Germination and Seedling Growth of Brassica chinensis

The effects of methanol crude extracts of the seed coat and endosperm of Viburnum sargentii on the seed germination, seedling growth and antioxidant enzymes of Brassica chinensis were examined to understand the cause of seed dormancy of Viburnum sargentii. The results showed that the seed, especially the endosperm tissue of Viburnum sargentii, contained substances that strongly suppressed seed germination. With the concentration of crude extract of endosperm increasing, the MDA content increased constantly, while SOD activity was significantly inhibited. The research results indicated that inhibiting substances were existed both in the seed coats and endosperm for Viburnum sargentii seeds, It was concluded that Extract of the seed of Viburnum sargentii may influence the activity of protective enzymes and then affect the normal seedlings growth of Brassica chinensis.