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当前位置: 首页 > 文章 > 紫玉兰(Magnolia liliflora)的繁育系统研究 四川林业科技 2013,34 (1) 9-14
Position: Home > Articles > A Study of the Breeding System of Magnolia liliflora Journal of Sichuan Forestry Science and Technology 2013,34 (1) 9-14

紫玉兰(Magnolia liliflora)的繁育系统研究

作  者：
唐婷;胥晓;吴庆贵;胡进耀;曾阳梅
单  位：
西华师范大学生命科学学院;绵阳师范学院生命科学与技术学院;西华师范大学国土资源学院
关键词：
紫玉兰;花部形态特征;杂交系数;花粉-胚珠比;繁育系统
摘  要：
从花部形态、花粉活力、柱头可授性、花粉-胚珠比(P/O)、杂交系数(OCI)、套袋实验、传粉观察等方面,对紫玉兰的繁育系统进行了研究。结果表明:(1)紫玉兰是两性花,花期为15 d左右。(2)紫玉兰散粉后9 h内花粉活力达到最高,24 h后花粉活力明显下降,56 h后花粉基本丧失活力;柱头可授性在开花后3 d内最强,4 d～6 d可授性开始降低,第7 d基本失去可授性。(3)传粉方式以虫媒传粉为主,是虫媒植物。(4)繁育系统检测结果为部分自交亲和、异交,需要传粉者的活动才能完成授粉过程。
译  名：
A Study of the Breeding System of Magnolia liliflora
作  者：
TANG Ting1 XU Xiao1 WU Qing-gui2 HU Jin-yao2* ZENG Yang-mei3(1.College of Life Sciences,China West Normal University,Nanchong 637009,China; 2.Department of Life Science and Technology,Mianyang Normal University,Mianyang 621000,China; 3.Land and Resources College,China West Normal University,Nanchong 637009,China)
关键词：
Magnolia liliflora Desr.,Flowering charateristics,Out-crossing index(OCI),Pollen/ovule(P/O),Breeding system
摘  要：
Breeding system is theoretically considered as a principal factor which has the most apparent effects on plant evolution and population genetic structure.In this paper,studies were made of the floral traits,pollen viability,stigma receptivity,pollen-ovule ratio,out-crossing index,fruit sets under a serious pollination treatments,and pollinating observation of Magnolia liliflora.The result showed that:(1)The flowers of M.liliflora were amphoterics.The life span of the flower was about 15 days.(2)The pollen viability of the flower was relatively high in 9 hours after blooming and became low 24 hours later.The pollen hardly had any viability after 56 hours.The stigmatic receptivity of the flower was strong during three days and then began to decline from the 4th day.On 7th day,the stigma completely lost its receptivity.(3)The effective pollination way of M.liliflora was insect pollination.(4)M.liliflora was out-crossing,partly self-compatible,requiring pollinators.

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