| 华细辛自发自交传粉机制研究 |
| |
| 引用本文： | 王勇,高永强.华细辛自发自交传粉机制研究[J].安徽农业科学,2011,39(33):20351-20354. |
| |
| 作者姓名： | 王勇 高永强 |
| |
| 作者单位： | 陕西理工学院生物科学与工程学院,陕西汉中,723000;陕西省汉西林业局,陕西汉中,723000 |
| |
| 基金项目： | 陕西省教育厅科研计划项目 |
| |
| 摘 要： | 目的]对华细辛自发自交传粉机制进行研究。方法]通过野外观察和栽培条件下人工控制试验,对细辛属华细辛的整个开花过程进行了详细的观察,对其传粉机制进行研究。结果]华细辛是一种以自发自交为主要传粉方式的物种。其花雌性先熟,单花期一般为3～4 d,第1天为雌性期,柱头可以接受外来花粉,雄蕊花丝呈90°下弯,花药不开裂;第2及第3天,两轮雄蕊依次上举,花药依次开裂,并与柱头发生自然接触,完成自发自交传粉。人工自交和异交试验证明,华细辛的异交均是可育的,结实率均达到100%。去雄套袋试验表明华细辛不能单性结实,也没有无融合生殖现象。结论]华细辛是杜衡亚属植物,但是其传粉机制与细辛亚属植物很相似。
|
| 关 键 词： | 华细辛 传粉机制 |
Study on Spontaneous Self-pollination Mechanism of Asarum sieboldii |
| |
| Institution: | WANG Yong et al(School of Biological Science and Engineering,Shaanxi University of Technology,Hanzhong,Shaanxi 723000) |
| |
| Abstract: | Objective] The aim of this study was to investigate spontaneous self-pollination mechanism of A.sieboldii.Method] Through field observation and manual controlling test under the cultivated condition,the whole flowering process of A.sieboldii belonging to Asarum subgenus Heterotropa was thoroughly observed to investigate its pollination mechanism.Result] Asarum sieboldii is a kind of species dominated by spontaneous self-pollination.Its female flower became mature firstly,and the duration of single flower ranged from 3 to 4 d.The first day was female phase duration,and the stigmas could receive foreign pollen,while stamen filaments bent down towards the base of calyx tube with 90°,and anther had no crack.During the following 2 days,two cycles of stamens erected subsequently,while anthers became dehiscent and naturally contacted with stigma at the same time,so spontaneous self-pollination was finished.Artificial self-pollination and out-crossing test had proved that the out-crossing of A.sieboldii were all fertile with seed setting rate of 100%.Emasculation by bagging test had suggested that A.sieboldii had no parthenocarpy and apomixes.Conclusion] A.sieboldii belongs to subgenus Heterotropa,but its pollination mechanism is similar to that of subgenus Asarum. |
| |
| Keywords: | A sieboldii pollination mechanism |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
