论文部分内容阅读
用5ppm 烯效唑(S-3307)浸冬小麦种子12h,不经冲洗,晾干后直接播种。2～4叶期麦苗叶片叶绿素 a、叶绿素 b 和叶绿素总量均增加;单株干物重在2～3叶期时略有下降,4叶期至越冬、开春阶段均高于对照;低温处理表明能减轻麦苗冻害程度,其生理原因,一是麦苗叶片和叶鞘可溶性糖含量提高;二是降低叶片和叶鞘在低温逆境条件下电解质的外渗率,从而提高膜的稳定性保证了细胞正常的生理功能。
Soak the winter wheat seeds with 5ppm uniconazole (S-3307) for 12h without direct washing and dry them and sow them directly. The leaf chlorophyll a, chlorophyll b and total chlorophyll increased at 2-4 leaf stage. The dry weight per plant decreased slightly at 2 ~ 3 leaf stage, but increased from 4 leaf stage to overwintering, Can reduce the degree of wheat frost damage, its physiological causes, first, soluble wheat leaf and leaf sheath to improve the content of soluble sugar; the second is to reduce leaf and sheath in the low temperature extrusions electrolyte leakage rate, thereby enhancing the stability of the membrane to ensure normal cell physiology Features.