ZHOU Xian-rong,JIANG Bo,GONG Xiao-hua,et al.Allelopathic Effects of Soybean Root Extracts on Seed Germination and Seedling Growth of Tumorous Stem Mustard (Brassica juncea var-tumida)[J].Soybean Science,2016,35(01):74-79.[doi:10.11861/j.issn.1000-9841.2016.01.0074]
大豆根系浸提液对茎瘤芥种子萌发和幼苗生长的化感作用
- Title:
- Allelopathic Effects of Soybean Root Extracts on Seed Germination and Seedling Growth of Tumorous Stem Mustard (Brassica juncea var-tumida)
- Keywords:
- Soybean; Tumorous stem mustard; Seed germination; Seedling growth; Allelopathy
- 文献标志码:
- A
- 摘要:
- 采用室内生物测定方法,研究了不同质量浓度的大豆根系浸提液(10,20,40,80 g.L-1)对3个茎瘤芥品种(永安小叶、涪杂2号和涪杂5号)种子萌发和幼苗生长的化感作用。结果表明:大豆根系浸提液对茎瘤芥具有明显的化感效应,包括促进、抑制和“低促高抑”3种化感作用类型,并具有品种效应和浓度效应。不同浓度的大豆根系浸提液对永安小叶和涪杂2号种子萌发的影响表现为促进作用,而对涪杂5号种子萌发则表现为“低促高抑”的规律;对涪杂2号幼苗根长为抑制作用,但对永安小叶和涪杂5号幼苗根长则呈“低促高抑”的规律;对3个茎瘤芥品种的幼苗苗高和生物量具有促进作用,且随着浸提液浓度的升高而增强。从综合化感效应来看,大豆根系浸提液对3个茎瘤芥品种总体上为促进作用,且对永安小叶的促进作用最大。因此,永安小叶是大豆最佳的接茬品种。
- Abstract:
- The allelopathic effects of different concentrations of aqueous extract of soybean roots on seed germination and seedling growth of three varieties of tumorous stem mustard were studied indoors using a bioassay method.The results showed that the soybean root extracts had significantly allelopathic effects on tumorous stem mustard, it included three different types of allelopathy, promotion, inhibition, low-promoting and high-inhibiting.What’s more, it was relevant to the varieties of tumorous stem mustard, concentration of aqueous extracts. The different concentrations of soybean root extracts had allelopathic promotion on the seed germination of Yonganxiaoye and Fuza 2, but the seed germination of Fuza 5 exhibited low-promoting and high-inhibiting. The soybean root extracts exhibited inhibitory effects on the root length of Fuza 2, but the root length of Yongan xiaoye and Fuza 5 exhibited low-promoting and high-inhibiting. The seedling height and biomass of three varieties were promoted by all test concentrations, and increased with the increase of the concentration. According to the synthetic allelopathic effects, soybean root extracts had allelopathic promotion effects on the three varieties of tumorous stem mustard in general, and the promotion effect of Yonganxiaoye is the most obvious.Therefore, Yonganxiaoye is the best variety planting after soybean.
参考文献/References:
[1]Rice E L. Allelopathy[M]. 2nd ed. New York: Academic Press, 1984: 1-50
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备注/Memo
基金项目:重庆市教育委员会科学技术研究项目 (KJ1401204);2013年重庆高校创新团队建设计划资助项目。第一作者简介:周先容(1968-),男,教授,主要从事植物学和生态学方面的研究。E-mail:zhouxianrong@yznu.cn。