...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Seed Science Research >Seed germination in cleistogamous species: theoretical considerations and a literature survey of experimental results
【24h】

Seed germination in cleistogamous species: theoretical considerations and a literature survey of experimental results

机译：Cleistofomous种种子萌发：实验结果的理论考虑与文献调查

获取原文
获取原文并翻译 | 示例
   

获取外文期刊封面封底 >>

       
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A cleistogamous species consists of individuals that produce both chasmogamous (open, CH) and cleistogamous (permanently closed, CL) flowers, which facilitates a mixed-mating system. In contrast to what one might expect, CL (obligately selfed) seeds and the plants derived from them can be more fit than CH (potentially outcrossed) seeds and the plants they give rise to. Our aim was to review some theoretical aspects of mixed mating in relation to retention of both CH and CL in cleistogamous species and to determine if data on germination support the notion that CL is advantageous over that of CH. Based on germination (or seedling emergence) of CH vs CL seeds in 29 species in 21 genera and 11 families of monocots and eudicots, CL seeds germinated better in 107 and equally well as in 64 of 252 case studies as CH seeds (67.9%), and the (CH CL):(CH > CL) ratio was 107/81 (1.32). We conclude that our study lends support to the notion that production of CL seeds by cleistogamous species is advantageous over that of CH seeds. Retention of CH by CL species may be due to the need to prevent complete selfing (s = 1.0) and thus total inbreeding depression (delta), which theory predicts would decrease reproductive success. Some caveats concerning the results of comparative studies on the germination biology of CH vs CL seeds of amphicarpic sensu stricto Fabaceae species and Commelina benghalensis and the aerial cleistogamous grass Danthonia spicata are discussed.
机译：Cleistogamous的物种包括生产累染力（开放式，CH）和克莱焦数（永久闭合的CL）花的个体，这有利于混合配合系统。与人们可能期望的鲜明对比，Cl（迫切自私）种子和源自它们的植物可以比Ch（潜在的折叠）种子和它们产生的植物更适合。我们的目的是审查混合交配的一些理论方面，以便在Cleisfous物种中保留CH和CL，并确定萌发数据是否支持CL对CH的有利的概念。基于CH VS CL种子的发芽（或幼苗出苗）在21种属的21种和11个家庭的单焦和奥迪斯，Cl种子在107种萌发，同等于252例案例研究中的64项，如CH种子（67.9％） ，和（CH＆LT; CL）:( CH> Cl）的比例为107/81（1.32）。我们得出结论，我们的研究向该观念提供了支持，即Clyomous物种的Cl种子的产生是有利的。 CH通过CL物种的保留可能是由于需要防止完全自行的（S = 1.0），从而完全近亲繁殖抑郁（DELTA），理论预测将降低生殖成功。讨论了一些关于萌发生物学萌发生物学的比较研究结果的注意事项讨论了Amphicarpic Sensustemsemageae和Commelina Benghalensis和空中Cleistogamous Grass Danthonia Spicata的比较研究结果。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
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