EXPERIMENTAL EVIDENCE FOR HOST RACES IN MISTLETOE (PHORADENDRON TOMENTOSUM)
EXPERIMENTAL EVIDENCE FOR HOST RACES IN MISTLETOE (PHORADENDRON TOMENTOSUM)
复制标题
槲寄生 (Phoradendron tomentosum) 宿主种族的实验证据
DOI：
--
复制
发表时间：
1985
期刊：
影响因子：
--
通讯作者：
M. Rejmánek
中科院分区：
文献类型：
--
作者：
K. Clay;D. Dement;M. Rejmánek
为了检验这一假设，槲寄生（Phoradendron tomentosum）的差异，它们发生的宿主物种，槲寄生种子从三个最常见的主机在得克萨斯州中部（朴树，朴树榆树，榆树crmus crmsi.folia，和牧豆树，Prosopsis glandalosa）种植到不同的个人的每三个主机。随后在随后的17个月种子萌发和吸器盘的幼苗形成。所有9个母体（来源）和种子（实验）宿主组合的种子发芽率都很高（范围82%-98%）。当供试寄主为同一种或不同种时，两组种子萌发率无显著差异。相反，源寄主和试验寄主相同时吸器盘的发育显著大于源寄主和试验寄主不同时。这些数据表明，槲寄生种群的遗传分化，使早期幼苗发育最大时，有相应的，
In order to test the hypothesis that mistletoes (Phoradendron tomentosum) are differentially adapted for the host species that they occur on, mistletoe seeds from the three most common hosts in central Texas (hackberry, Celtis occidentaliss elm, Ulmus crmsi.folia, and mesquite, Prosopsis glandalosa) were planted onto different individuals of each of the three hosts. Germination of seeds and formation of haustorial disks by seedlings were followed in the subsequent 17 months. Germination of seeds was very high for all nine combinations of maternal (sourc* and seed (experimental) hosts (range 82%-98%). There were no significant differences in seed germination between the two groups when source and experimental hosts were the same species and when they were different species. In contrast development of haustorial disks when source and experimental hosts were the same species was significantly greater than when experimental host and source host species were different. The data suggest that populations of mistletoes are genetically differentiated such that early seedling development is greatest when there is corre