THE HOST RANGE AND SELECTIVITY OF A PARASITIC PLANT - RHINANTHUS-MINOR L
THE HOST RANGE AND SELECTIVITY OF A PARASITIC PLANT - RHINANTHUS-MINOR L
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DOI：
10.1007/bf00379116
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发表时间：
1989-01-01
期刊：
影响因子：
2.7
通讯作者：
WATKINSON, AR
中科院分区：
文献类型：
--
作者：
GIBSON, CC;WATKINSON, AR
小犀牛（黄拨浪鼓）是英国草原栖息地广泛分布的半寄生植物。对英格兰东部霍尔姆滨海沙丘植被的关联分析显示，通过正关联，只有两种潜在的寄主植物。相比之下，对根系统的直接检查揭示了与 20 种寄主物种的吸器联系。一株植物寄生的物种数量从一到七种不等。来自英国另外四个地点和中欧一个地点的数据表明，R. Minor 的自然寄主范围涵盖 18 个科中至少 50% 的物种，其中 22% 属于豆科，30% 属于禾本科。将每个物种的吸器连接数量与土壤中的根丰度进行比较表明，小红线虫是一种高度选择性的寄生虫，但种群之间或来自同一种群不同部分的植物之间的选择性并不一致。讨论了宿主选择性的原因。
Rhinanthus minor (Yellow-rattle) is a widespread hemiparasitic plant of grassland habitats thought Britain [UK]. Association analysis of the dune vegetation at Holme-next-the-Sea in eastern England revealed only two potential host plants through positive association. In contrast direct examination of the root systems revealed haustorial connections with 20 host species. The number of species parasitized by one plant ranged from one to seven. Data from another four sites in Britain and one in central Europe indicate that the natural host range of R. Minor encompasses at least 50% species from 18 families with 22% in the Leguminosae and 30% in the Gramineae. Comparison of the number of haustorial connections made to each species with the abundance of roots in the soil shows that R. minor is a highly selective parasite, but that the selectivity is not consistent between populations or between plants from different parts of the same population. The reasons for host selectivity are discussed.