摘要
本文以三个品种的白菜种子(新牡丹江二号、元帅、抗病酸菜王)为研究对象,采用浓度为5%、10%、15%、20%、25%的聚乙二醇6000 (PEG-6000)模拟干旱胁迫,以蒸馏水(PEG-6000浓度为0%)作为对照,探究不同浓度干旱胁迫处理对白菜种子萌发、幼苗生长的影响。研究表明:在浓度0%~15%之间,3个品种种子萌发期的发芽势和发芽率没有显著变化,种子的萌发进程没有受到显著影响。随着聚乙二醇6000 (PEG-6000)浓度的增加,白菜种子的发芽势、发芽率、株高、根长等均有不同程度的降低,其中20%~25%之间下降非常明显,抑制作用显著(P 抗病酸菜王 >新牡丹江二号。
In this paper, three different varieties of Chinese cabbage seeds (MDJ-II, YS and DRP-KING) as the research object, the concentration of 5%, 10%, 15%, 20%, 25% polyethylene glycol 6000 (PEG-6000) simulated drought stress, distilled water (PEG-6000 concentration of 0%) as a control, the effects of different concentration PEG 6000 drought stress on seed germination and seedling growth of Chinese cabbage (Brassica pekinensis) were investigated. The results showed that there was no significant change in the germination energy and germination percentage of the three varie-ties during PEG-6000 concentration from 0% to 15%, and the seed germination process was not significantly affected. With the increase of the concentration of PEG-6000, the germination energy, germination percentage, plant height and root length of Chinese cabbage seeds all decreased to some extent. The decrease is very obvious between 20% and 25% of PEG-6000 concentration and the inhibition is significant (P DRP-KING >MDJ-II.
出处
《农业科学》
2018年第3期164-170,共7页
Hans Journal of Agricultural Sciences
基金
国家自然科学基金面上项目(No.31370630)资助。
