| 紫薇杂交亲和性和杂交优势的早期选择 |
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| 引用本文： | 王瑞文,杨彦伶,张军围,李振芳.紫薇杂交亲和性和杂交优势的早期选择[J].湖北林业科技,2012(5):10-12,70. |
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| 作者姓名： | 王瑞文 杨彦伶 张军围 李振芳 |
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| 作者单位： | [1]湖北省林业科学研究院,武汉430075 [2]经济林木种质资源综合利用湖北省重点实验室,武汉430075 [3]华中农业大学,武汉430070 |
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| 基金项目： | 湖北主要乡土园林植物种质资源收集及遗传特性研究（省自然科学基金重点项目）; 紫薇优良新品种选育及规模化快繁技术研究与示范（武汉市科技攻关项目） |
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| 摘 要： | 研究了紫薇杂交亲和性及杂种优势在种实性状上的表现,结果表明:不同杂交系统间及同一种源内不同杂交组合亲和力不同,授粉结实率应作为亲本选择的重要依据,其中以杂种紫薇做母本、保康紫薇做父本的杂交系统以及杂种紫薇内个体间的杂交具有较高的亲和性,在杂交制种时可加以利用;正反交具有不同亲和性,在杂交时应合理选择父母本;与杂种紫薇和四川紫薇杂交系统(M×S)及杂种紫薇种源内杂交(M×M)相比,杂种紫薇和保康紫薇杂交系统(M×B)平均发芽率提高20%～45%,平均发芽势提高44%～226%,这些都可以看做杂交优势的早期表现形式。
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| 关 键 词： | 紫薇 杂交亲和性 杂交优势 |
Cross compatibility and Heterosis for Seed traits in Lagerstroemia indica |
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| Wang Ruiwen Yang,Yanling,Zhang Junwei Li Zhenfang.Cross compatibility and Heterosis for Seed traits in Lagerstroemia indica[J].Hubei Forestry Science and Technology,2012(5):10-12,70. |
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| Authors: | Wang Ruiwen Yang Yanling Zhang Junwei Li Zhenfang |
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| Institution: | 1)(1.Hubei Academy of Forestry Wuhan 430075;2.Hubei Key Laboratory of Economic Forest Germplasm Improvement and Resources Comprehensive Utilization wuhan;3.Huazhong Agriculture Universtry Wuhan 430070) |
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| Abstract: | The cross-compatibility and heterosis for seed-traits in Lagerstroemia indica were studied.The results were as follows.Firstly,the cross-compatibility was obviously different among species,individuals in the same species,mating systems and cross in mating systems.So the cross-compatibility should be considered in parent selection of cross breeding.The two cross systems of M×B and M×M had higher cross-compatibility,which could be used in hybrid production.In addition,reciprocal cross had different cross-compatibility,so it was important to select suitable parents in hybrid production.Secondly,compared with the germination rate of the mating systems of M×S and M×M,the average germination rate of the mating system of M×B increased by 20%-45%,while the average germinating energy increased by 44%-226%.These phenomena could be considered as early manifestation caused by self-depressing. |
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| Keywords: | Lagerstroemia indica cross-compatibility heterosis |
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