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关苍术花部综合特征与繁育系统的研究(PDF)

《广西植物》[ISSN:1000-3142/CN:45-1134/Q]

期数:
2015年02期
页码:
166-172
栏目:
系统与进化
出版日期:
2015-04-20

文章信息/Info

Title:
Floral syndrome and breeding system of Atractylodes japonica
文章编号:
1000-3142(2015)02-0166-07
作者:
朴 锦12 具红光2 朴钟云1*
1. 沈阳农业大学 园艺学院, 沈阳 11016; 2. 延边大学 农学院, 吉林 延吉 1330021
Author(s):
PIAO Jin12 JU Hong-Guang2 PIAO Zhong-Yun1*
1. College of Horticulture, Shenyang Agricultural University, Shenyang 110161, China; 2. College of Agricultural, Yanbian university, Yanji 133002, China
关键词:
关苍术 开花动态 花粉活力 柱头可授性 繁育系统
Keywords:
Atractylodes japonica flowering dynamics pollen viability stigma receptivity breeding system
分类号:
Q949; S567.21
DOI:
10.11931/guihaia.gxzw201403018
文献标识码:
A
摘要:
采用定点观察,运用杂交指数估算、花粉/胚珠比(P/O)测定、套袋授粉等方法,对关苍术的花部综合特征及繁育系统进行研究。结果表明:种群花期为7月下旬至9月初,单花序花期为12~17 d,小花日开放高峰期为早上7:00~8:00; 花粉活力最高(90%以上)在开花后2 h以内,而此时其柱头尚无可授性,柱头在花开48~72 h以内具有较强可授性; 花粉/胚珠比为6 690,杂交指数为5,繁育系统为专性异交,优势访花者为蜂类和蝇类; 套袋和授粉实验结果表明关苍术不存在无融合生殖现象,自交和同株异花结实率很低,其繁育系统以异交为主。通过关苍术花部综合特征和繁育系统的研究,进一步了解其生物学特性,为关苍术资源保护和人工培育提供了理论基础。
Abstract:
The study on floral syndrome and breeding system of Atractylodes japonica was carried out with the method of fixed-point observation,pollen-ovule ratio(P/O),out-crossing index,bagging pollination, in order to provide the theoretical basis for its resource protection and artificial cultivation. The results showed that flowering period of populations was from late July to early September,the life span of individual inflorescence was 12-17 d,and the peak period of daily flowering for floret was at 7:00-8:00 a.m. Pollen vitality was the highest(above 90%)within 2 h,while stigma was no receptivity and its receptivity was the highest after flowering 48-72 h. The P/O ratio was 6 690,hybrid index was 5,breeding system was xenogamy,and the main floral visitors were bees and flies. There was no apomixes based on bagging and pollination studies,inbred and geitonogamous seed setting rate was low. So,the outcrossing was the major breeding system of A. japonica.

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备注/Memo

备注/Memo:
收稿日期: 2014-08-14修回日期: 2014-11-05
基金项目: 吉林省教育厅“十二五”规划项目; 延边大学校项目(2011800602013127)。
作者简介: 朴锦(1973-),女(朝鲜族),黑龙江宁安市人,硕士,副教授,主要从事中药材栽培及遗传育种研究,(E-mail)piaojin@ybu.edu.cn。 *通讯作者: 朴钟云,博士,教授,主要从事药用植物栽培研究,(E-mail)zypiaosau@163.com。
更新日期/Last Update: 2015-04-20