白灰毛豆和新银合欢水提液对新银合欢化感作用研究
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摘要
分别配制4种不同浓度的白灰毛豆、新银合欢的鲜茎叶和凋落叶的水提液,测定其对新银合欢种子萌发和幼苗生长的影响,探究他们对新银合欢的化感作用,为优势种群的形成、群落的演替、植被的恢复等研究提供依据.结果表明,白灰毛豆、新银合欢的鲜茎叶和凋落叶的水提夜对新银合欢均有明显的化感作用.对种子萌发总体表现为低浓度促进,高浓度抑制.新银合欢水提液对自身幼苗须根数、根长有抑制作用,对苗高、鲜重则表现出促进作用.新银合欢的化感作用可能是群落演替中白灰毛豆被新银合欢快速替代的原因之一.
Four different concentrations of water extracts from fresh stems and leaves of Tephrosia Candida and Leucaena leucocephala cv. Salvador were prepared to determine their effects on seed germination and seedling growth of Leucaena leucocephala,and to explore their allelopathic effects on Leucaena leucocephala,so as to provide basis for the formation of dominant populations,community succession and vegetation restoration. The results showed that the extracts of fresh stems and leaves and litters of Tephrosia Candida and Leucaena leucocephala exert significant allelopathic effects on Leucaena leucocephala. The overall performance of seed germination is promoted by the low concentration of the extracts,while inhibited by the high concentration. The water extract of Leucaena leucocephala inhibited the number of fibrous roots and root length of its own seedlings,but promoted the seedling height and fresh weight. Allelopathy of Leucaena leucocephala may be one of the reasons why Tephrosia Candida was replaced by Leucaena leucocephala cv. Salvador.
Four different concentrations of water extracts from fresh stems and leaves of Tephrosia Candida and Leucaena leucocephala cv. Salvador were prepared to determine their effects on seed germination and seedling growth of Leucaena leucocephala,and to explore their allelopathic effects on Leucaena leucocephala,so as to provide basis for the formation of dominant populations,community succession and vegetation restoration. The results showed that the extracts of fresh stems and leaves and litters of Tephrosia Candida and Leucaena leucocephala exert significant allelopathic effects on Leucaena leucocephala. The overall performance of seed germination is promoted by the low concentration of the extracts,while inhibited by the high concentration. The water extract of Leucaena leucocephala inhibited the number of fibrous roots and root length of its own seedlings,but promoted the seedling height and fresh weight. Allelopathy of Leucaena leucocephala may be one of the reasons why Tephrosia Candida was replaced by Leucaena leucocephala cv. Salvador.
引文
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[2]杨琴琴,缪丽华,洪春桃,等.香菇草水浸提液对3种植物种子萌发和幼苗生长的化感效应[J].浙江农林大学学报,2013,30(3):354-358.
[3]万方浩,刘万学,郭建英,等.外来植物紫茎泽兰的入侵机理与控制策略研究进展[J].中国科学(C辑),2011,41(1):13-21.
[4]中国科学院中国植物志编辑委员会.中国植物志:40卷[M].北京:科学出版社. 1985:74-76.
[5]赵怀宝,雷莉丽,羊金殿,等.新银合欢对水分的生态适应性研究[J].海南热带海洋学院学报,2018,25(2):25-31+58.
[6]万欢欢,刘万学,万方浩.紫茎泽兰叶片凋落物对入侵地4种草本植物的化感作用[J].中国生态农业学报,2011,19(1):130-134.
[7]曾任森.化感作用研究中的生物测定方法综述[J].应用生态学报,1999,10(1):125-128.
[8]BELZ R G,REINHARDT C F,FOXCROFT L C,et al. Residue allelopathy in Parthenium hysterophorus L.—Does parthenin play a leading role?[J]. Crop Protection,2007,26(3):237-245.
[9]WILLIAMSON G B,RICHARDSON D. Biossays for allelopathy:Measuring treatment responses with independent controls[J].Journal of Chemical Ecology,1988,14(1):181-187.
[10]沈洁,吉星星,袁堂如,等.樟树叶水浸提液对高羊茅种子萌发和幼苗生长的化感作用[J].湖北农业科学,2013,52(14):3349-3353.
[11]王晓英,冯殿齐,张元湖,等.古树对萝卜、白菜化感作用的生物测定和作用机制研究[J].山东农业大学学报(自然科学版),2013,44(3):333-339.
[12]王春会,程智慧,牛青,等.大蒜植株超声波浸提液对不同受体蔬菜的化感作用[J].西北农林科技大学学报(自然科学版),2009,37(7):103-109.