CROP MIMICRY IN WEEDS
CROP MIMICRY IN WEEDS
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DOI：
10.1007/bf02858881
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发表时间：
1983-01-01
期刊：
影响因子：
2.6
通讯作者：
BARRETT, SCH
中科院分区：
文献类型：
--
作者：
BARRETT, SCH
农业实践所施加的选择力导致了杂草或农业生态型的农业小种的进化。有些农业生态类型与特定的作物密切相关。这种关联可能涉及一种模仿系统，即杂草在其生活史的特定阶段与作物相似，由于错误的身份，逃避根除。杂草的拟态形式最有可能通过人工除草或通过收获和种子清洗程序来选择。形态和物候相似的一个突出例子是在栽培的水稻模拟物中发现的，Echinochloa crus-gallivar.oryzicola，原产于亚洲稻田，但现在广泛分布在世界各地的水稻种植区。本文对栽培稻、普通稻和普通稻的生长发育和表型变异规律进行了比较研究。crus-gallivar.oryzicolaandE. crus-gallivar.这表明，在亚洲，强烈的手工除草行为构成了有利于水稻拟态进化的主要选择力量。crus-gallivar.oryzicola.
The selective forces imposed by agricultural practices have resulted in the evolution of agricultural races of weeds or agroecotypes. Some agroecotypes are intimately associated with a specific crop. Such associations can involve a system of mimicry, whereby the weed resembles the crop at specific stages during its life history and, as a result of mistaken identity, evades eradication. Mimetic forms of weeds are most likely to be selected by handweeding of seedlings or by harvesting and seed cleaning procedures. A striking example of morphological and phenological resemblance is found in the cultivated rice mimic,Echinochloa crus-gallivar.oryzicola, a native of Asian rice fields but now widely distributed in rice-growing areas of the world. Comparative studies of the growth, devel-opment and patterns of phenotypic variation of cultivated rice,E. crus-gallivar.oryzicolaandE. crus-gallivar.crus-gallidemonstrate that the crop mimic is more similar to rice in many attributes than it is to its close relative. It is proposed that intense handweeding practices in Asia constitute the main selective force favoring the evolution of rice mimicry inE. crus-gallivar.oryzicola.