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五脉山黧豆开花动态及有性繁育系统的研究
引用本文:张丙林,穆春生,王颖,王彦静.五脉山黧豆开花动态及有性繁育系统的研究[J].草业学报,2006,15(2):68-73.
作者姓名:张丙林  穆春生  王颖  王彦静
作者单位:东北师范大学草地科学研究所,吉林省生态恢复与生态系统管理重点实验室,吉林,长春,130024
基金项目:吉林省自然科学基金(20030554)资助
摘    要:观测了五脉山黧豆的开花动态,并用杂交指数(OCI)、花粉-胚珠比(P/O)方法测定了其有性繁育系统类型。结果表明,五脉山黧豆的花期持续45 d左右,盛花期为6月下旬左右。开花的日动态呈明显的双峰现象,2峰分别在8:00-11:00和14:00-15:00时出现。五脉山黧豆的杂交指数(OCI)=3,繁育系统为自交亲和,有时需要传粉者;花粉-胚珠比(P/O)=2 286.21,为兼性异交。得出其繁育类型为混交繁育系统,即自交和异交并存。五脉山黧豆的传粉系统不完善和虫害是结实率低的主要原因。

关 键 词:五脉山黧豆  开花动态  繁育系统  杂交指数  花粉-胚珠比
文章编号:1004-5759(2006)02-0068-06
收稿时间:2004-11-29
修稿时间:2004年11月29日

Study on floral dynamic and breeding system of Lathyrus quinquenervius
ZHANG Bing-lin,MU Chun-sheng,WANG Ying,WANG Yan-jing.Study on floral dynamic and breeding system of Lathyrus quinquenervius[J].Acta Prataculturae Sinica,2006,15(2):68-73.
Authors:ZHANG Bing-lin  MU Chun-sheng  WANG Ying  WANG Yan-jing
Institution:Key Laboratory for Vegetation Ecology, Ministry of Education; Institute of Grassland Science, Northeast Normal University, Changehun 130024, China
Abstract:The experiment is the observation of floral dynamic,and the test of breeding system by out crossing index(OCI) and pollen-ovule ratio(P/O).The results show that: the period of flowering is about 45 days in which the blossoming occurs in the last 10 days of June.Flowering diurnal dynamic of Lathyrus quinquenvervius presents a two-peak trait.The one appears at 8:00-11:00 and the other appears at 14:00-15:00 of one day.A self-pollination breeding system can be reflected by OCI=3,pollinators are required in sometimes;A complex cross bred can be indicated by P/O=2 286.21.So the breeding system of L.quinquenervius is mixed with self-pollination and outcrossing.The faultiness of breeding system and pests destroying cause the low seed-set rate.
Keywords:Lathyrus quinquenervius  floral dynamic  breeding system  outcrossing index(OCI)  pollen/ovule(P/O)
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