...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Nordic Journal of Botany >Mating system variation in Veronica (Plantaginaceae): inferences from pollen/ovule ratios and other reproductive traits
【24h】

Mating system variation in Veronica (Plantaginaceae): inferences from pollen/ovule ratios and other reproductive traits

机译：交配系统变化在维罗妮卡(车前草科):从花粉和胚珠的推论比率和其他生殖特征

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相关主题

摘要

The pollen—ovule ratio (P/O) is commonly used to estimate the mode of sexual reproduction in flowering plants. In previous studies, a clear correspondence has been detected between this character and the degree of autogamy. We here investigate variation in this character and its expected correlates in the genus Veronica (Plantaginaceae). Pollen-ovule ratios of 45 species representing eleven percent of all the species in the genus were investigated and compared with results from crossing experimentsfrom previous studies. In addition, multiple populations of 17 of the 45 studied species were sampled and a controlled-environment experiment was conducted to evaluate the extent of intraspecific variation. Moreover, relationships between P/O and other primary and secondary reproductive characters of the Veronica flower were investigated in relation to a phylogenetic hypothesis in order to determine the phylogenetic constraints on reproductive characters. The differences in P/O among species correspondwell to the diversity of mating systems in Veronica and correlate well with other floral characters such as corolla size. These characters together seem to allow a powerful and fast tool to infer mating systems. However, causes for intraspecific variation of P/O, such as different cytotypes, ecotypes or different growth conditions, need to be considered.
机译：pollen-ovule比(P / O)是常用的估计有性生殖的模式开花植物。这之间的信件已经检测到性格和自花受粉的程度。在这个角色及其变化进行调查预计相关属维罗妮卡(车前草科)。代表百分之十一的物种属的物种进行调查相比之下,结果穿越experimentsfrom先前的研究。45的多个种群17进行了研究物种样本和一个受控的环境中实验进行了评估的程度的种内变异。P / O和其他主要和之间的关系辅助生殖Veronica的字符花了一个系统发育的假设来确定系统限制生育字符。correspondwell交配系统的多样性与其他花卉在维罗妮卡和关联字符如花冠大小。一起似乎允许一个强大的和快速的工具来推断交配系统。种内变异的P / O,如不同cytotypes,生态型之间或不同的增长条件下,需要考虑。

著录项

获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号