MECHANISMS FAVOURING OUTBREEDING IN STRIGA HERMONTHICA (SCROPHULARIACEAE)
MECHANISMS FAVOURING OUTBREEDING IN STRIGA HERMONTHICA (SCROPHULARIACEAE)
复制标题
有利于黑蚕（玄参科）近亲繁殖的机制
DOI：
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发表时间：
1984
期刊：
影响因子：
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通讯作者：
L. Musselman
中科院分区：
文献类型：
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作者：
S. B. Safa;B. M. Jones;L. Musselman
摘要自交不亲和性已经在两个寄生开花植物Striga hermonthica的样品中得到证实，Striga hermonthica来自上沃尔特和苏丹。通过控制授粉后柱头制备的荧光显微镜测定相容性。自交不亲和性与花的适应有利于授粉的长舌昆虫，如蝴蝶。远缘繁殖是S. hermonthica，无论是在形态和宿主特异性。宿主特异性的遗传变异限制了目前热带谷物对S.赫尔蒙席卡。
SUMMARY Self-incompatibility has been demonstrated in two samples of the parasitic flowering plant, Striga hermonthica, originating from Upper Volta and Sudan. Compatibility was determined by fluorescence microscopy of stigmatic preparations following controlled pollinations. Self incompatibility was associated with floral adaptations favouring pollination by long-tongued insects such as butterflies. Outbreeding accounts for the variability of S. hermonthica, both in morphology and in host-specificity. Genetic variation in host specificity imposes limits upon the effectiveness of the present methods of testing tropical cereals for resistance to S. hermonthica.