The Role of Allelopathy in Buckwheat (Fagopyrum sagittatum) Inhibition of Canada Thistle (Cirsium arvense)
The Role of Allelopathy in Buckwheat (Fagopyrum sagittatum) Inhibition of Canada Thistle (Cirsium arvense)
复制标题
化感作用在荞麦 (Fagopyrum sagittatum) 抑制加拿大蓟 (Cirsium arvense) 中的作用
DOI：
10.1017/s004317450008084x
复制
发表时间：
1995
期刊：
影响因子：
2.5
通讯作者：
G. Crabtree
中科院分区：
文献类型：
--
作者：
S. Eskelsen;G. Crabtree
为了量化加拿大蓟与荞麦之间的相互作用，并确定化感作用是否是干扰的机制，在田间进行了置换系列试验。植物生物量数据表明，荞麦只对种内竞争做出反应，而不对来自加拿大蓟的种间竞争做出反应。加拿大蓟对来自荞麦植株的种间竞争作出反应，但对种内竞争没有反应。没有种间竞争成分(加拿大蓟密度对荞麦没有可测量的影响)表明生态位分化的价值可能大于统一，这意味着荞麦和加拿大蓟之间不存在相互拮抗。由于化感作用是导致相互抑制的一种机制，数据不支持荞麦通过化感作用干扰加拿大蓟的假设。
A replacement series experiment was conducted in the field to quantify the interaction between Canada thistle and buckwheat, and to determine if allelopathy was the mechanism of interference. Plant biomass data indicated that buckwheat only responded to intraspecific competition and not interspecific competition from Canada thistle. Canada thistle responded to interspecific competition from buckwheat plants but not to intraspecific competition. The absence of one of the interspecific competition components (no measurable effect of Canada thistle density on buckwheat) indicates that the value for niche differentiation is probably greater than unity, signifying that there is no mutual antagonism between buckwheat and Canada thistle. Because allelopathy is one mechanism that causes mutual inhibition, data do not support the hypothesis that buckwheat interferes with Canada thistle by allelopathy.