达乌里胡枝子的繁育系统及传粉生物学

doi:10.11733/j.issn.1007-0435.2021.11.010

草地学报 ›› 2021, Vol. 29 ›› Issue (11): 2454-2460.DOI: 10.11733/j.issn.1007-0435.2021.11.010

达乌里胡枝子的繁育系统及传粉生物学

佟莉蓉¹, 宋雨¹, 王朋¹, 王娟¹, 车迪²

1. 山西农业大学草业学院, 山西太谷 030801;
2. 中国标准化研究院, 北京 100089

收稿日期:2021-06-18 修回日期:2021-08-17 出版日期:2021-11-15 发布日期:2021-12-06
作者简介:佟莉蓉(1976-),女,江苏邳州市人,副教授,博士,主要从事草类种质资源与育种研究,E-mail:tlr122500@126.com;宋雨(1996-),女,山西陵川人,硕士研究生,主要从事草类种质资源与育种研究,E-mail:lay2117185218@163.com
基金资助:
山西农业大学“十四五”生物育种工程项目“乡土草种质资源挖掘与新品种选育（YZGC134）”；山西省重点研究开发项目（201703D221009-4201903D211012）资助

Breeding System and Pollination Biology of Lespedeza davurica

TONG Li-rong¹, SONG Yu¹, WANG Peng¹, WANG Juan¹, CHE Di²

1. College of Grassland Science, Shanxi Agricultural University, Taigu, Shanxi Province 030801, China;
2. China National Institute of standardization, Beijing 100089, China

Received:2021-06-18 Revised:2021-08-17 Online:2021-11-15 Published:2021-12-06

摘要/Abstract

摘要： 为揭示达乌里胡枝子的传粉生物学特性，本文以山西省八个地区的野生达乌里胡枝子为供试材料，针对其繁育系统、传粉媒介等方面进行研究。结果表明：和顺居群的单花花粉量最多达到（8 750±1 946）粒·花^-1，而中阳的花粉量最少仅有（5 370±879）粒·花^-1。依照P/O值所测得的达乌里胡枝子繁育系统类型为专性异交。达乌里胡枝子的杂交指数为4，其繁育类型为存在自交和异交，需要传粉媒介传播花粉。昆虫访花行为会在10：00~11：00之间出现第一次访花高峰，在午后15：00~16：00出现第二次高峰，第一次高峰小于第二次。膜翅目昆虫如蜜蜂等传粉效果最为明显。国内外对达乌里胡枝子开花特性的研究较少，其繁育体系和授粉生物学尚未见报道。本研究结果不仅可为达乌里胡枝子的育种特性提供参考，也可为达乌里胡枝子的杂交育种和新品种培育提供理论和实践依据。

关键词: 达乌里胡枝子, 传粉生物学, 繁育系统, 杂交指数, 传粉昆虫

Abstract: To reveal the pollination biological characteristics of L.davurica,wild L.davurica in eight regions of Shanxi province was used as test materials,and its breeding system and pollination medium were studied. Results showed that the maximum pollen number of single flowers in the Heshun population was 8 750 ±1 946 grain·flower^-1,while the lowest was 5 370±879 grain·flower^-1 in the Zhongyang population. According to the pollen to ovule ratio (P/O),the breeding system type of L.davurica was obligate xenogamy. The outcrossing index of L.davurica was 4,and its breeding type was self-crossing and outcrossing,which needed pollination medium to spread pollen. The first peak in insect foraging behavior occurs between 10:00 and 11:00 a.m.,and a second peak between 3:00 and 4:00 p.m.,the first peak is smaller than the second. Pollination by hymenopterans,such as bees,is the most effective. There are few studies on flowering characteristics of L.davurica in China and abroad,and the breeding system and pollination biology have not been reported. The results of this study not only provide a reference for the breeding characteristics of L.davurica,but also provide a theoretical and practical basis for the hybrid breeding and new variety cultivation of L.davurica.

Key words: Lespedeza davurica, Pollination biology, Breeding system, Outcrossing index, Pollinator

中图分类号:

S153

佟莉蓉, 宋雨, 王朋, 王娟, 车迪. 达乌里胡枝子的繁育系统及传粉生物学[J]. 草地学报, 2021, 29(11): 2454-2460.

TONG Li-rong, SONG Yu, WANG Peng, WANG Juan, CHE Di. Breeding System and Pollination Biology of Lespedeza davurica[J]. Acta Agrestia Sinica, 2021, 29(11): 2454-2460.

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达乌里胡枝子的繁育系统及传粉生物学

Breeding System and Pollination Biology of Lespedeza davurica

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