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浙江大学学报（农业与生命科学版）
浙江大学学报(农业与生命科学版)  2014, Vol. 40 Issue (1): 41-48    DOI: 10.3785/j.issn.1008-9209.2013.06.072
农业科学     
中间锦鸡儿茎叶水浸提液对4种农作物种子萌发和幼苗生长的化感作用
陈林, 杨新国, 李学斌, 宋乃平*
(宁夏大学西北退化生态系统恢复与重建教育部重点实验室/西北土地退化与生态恢复省部共建国家重点实验室培育基地/
西部生态与生物资源开发联合研究中心,银川750021)
Allelopathic effects of Caragana  intermedia on seed germination and seedling growth of four crops
Chen Lin, Yang Xinguo, Li Xuebin, Song Naiping*
(Key Laboratory  for Restoration and Reconstruction of Degraded Ecosystem in North-Western China of Ministry of Education / Breeding Base for State Key Laboratory of Land Degradation and Ecological Restoration of North-western China / Union Research Center for Ecology and Exploitation of Biological Resources in Western China,Ningxia University,Yinchuan  750021, China)
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摘要： 采用改进的水浸提法研究中间锦鸡儿(Caragana intermedia)茎叶水浸提液对玉米、小麦、稷和荞麦4种农作物种子萌发和幼苗生长的化感作用。结果表明,随着中间锦鸡儿茎叶水浸提液质量浓度的增加,受体农作物（小麦、稷、荞麦和玉米）种子的平均发芽时间延长,发芽率和发芽指数均降低。但不同质量浓度水浸提液对4种农作物种子发芽的影响有差别,在质量浓度为12.5 mg/mL时,除荞麦外,其他3种农作物的种子相对发芽率间差异均无统计学意义（P＞0.05）,玉米种子的发芽指数降幅最高,达到了35.4%,而稷的种子平均发芽时间则在统计学意义上延长了0.3 d,其他3种农作物种子平均发芽时间与对照均无统计学意义（P＞0.05）。小麦、稷和荞麦幼苗苗高生长对中间锦鸡儿茎叶水浸提液的化感效应表现为“剂量抑制”效应,而玉米幼苗根长则表现为“低浓度无影响、高浓度抑制”效应。小麦、稷和荞麦3种农作物的幼苗根长抑制率均大于相应的苗高抑制率。4种农作物对中间锦鸡儿茎叶化感作用综合效应的敏感性大小依次为荞麦＞稷＞小麦＞玉米。
Abstract: Competition between species was a fundamental ecological process, which can proceed by various mechanisms， and  allelopathy of plants was strongly coupled with external biotic and abiotic stress factors. As one of the core contents of research to the modern agroforestry system, the allelopathy effects between different plants attracted more and more attention. Some studies were mainly concentrated in crops and weeds, the succession of forest and crops autotoxicity, but the allelopathic effect of Caragana  intermedia on growth and distribution of the other plants around them, especially the crops, was still unknown.
Based on the above analysis and improved method, aqueous extracts of C.  intermedia leaves and stems were used to test their allelopathic effects on  seed germination and seedling growth of four crops (Zea mays, Triticum aestivum, Panicum miliaceum and Fagopyrum esculentum).
The results showed that: the seed germination index and germination rate of Z. mays, T. aestivum, P. miliaceum and F. esculentum were all decreased and their seed germination time were lengthened with the increasing of aqueous extracts of C.  intermedia leaves and stems. But the effects of different concentrations of aqueous extracts on four test crop seeds were quite different. In the concentration of 12.5 mg/mL, the seed germination rates of three crops (Z. mays, T. aestivum, P. miliaceum) except F. esculentum had no significant differences (P ＞ 0.05), and the seed germination index of Z. mays decreased most (35.4%), and the mean germination day of T. aestivum seeds was significantly extended by 0.3 days, however, the Z. mays, P. miliaceum and F. esculentum seed germination showed no significant difference from the control (P ＞ 0.05).The aqueous extracts showed a “dose inhibition response” on the shoot growth of test crops, but for the root growth of Z. mays, the low concentrations of aqueous extracts showed no effect while high concentrations showed inhibitive effect. Compared with the shoot growth of F. esculentum, P. miliaceum and T. aestivum, the root growth showed higher sensitivity to aqueous extracts of C.  intermedia. The comprehensive sensitivity of the allelopathic effect on the four test crops of aqueous extracts of C.  intermedia leaves and stems was in the order of F. esculentum ＞ P. miliaceum ＞ T. aestivum ＞ Z. mays.
出版日期: 2014-01-20
CLC:  S 181  
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杨新国
李学斌
宋乃平*
陈林

引用本文:

陈林, 杨新国, 李学斌, 宋乃平*. 中间锦鸡儿茎叶水浸提液对4种农作物种子萌发和幼苗生长的化感作用[J]. 浙江大学学报(农业与生命科学版), 2014, 40(1): 41-48.

Chen Lin, Yang Xinguo, Li Xuebin, Song Naiping*. Allelopathic effects of Caragana  intermedia on seed germination and seedling growth of four crops. Journal of Zhejiang University (Agriculture and Life Sciences), 2014, 40(1): 41-48.

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http://www.zjujournals.com/agr/CN/10.3785/j.issn.1008-9209.2013.06.072    或    http://www.zjujournals.com/agr/CN/Y2014/V40/I1/41

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