| 中国沿海地区野生结缕草属分布现状调查与耐盐性评价 |
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| 引用本文： | 刘莉,胡涛,傅金民.中国沿海地区野生结缕草属分布现状调查与耐盐性评价[J].草业科学,2012,29(8):1250-1255. |
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| 作者姓名： | 刘莉 胡涛 傅金民 |
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| 作者单位： | 中国科学院武汉植物园植物种质创新与特色农业重点实验室,湖北武汉,430074;中国科学院武汉植物园植物种质创新与特色农业重点实验室,湖北武汉,430074;中国科学院武汉植物园植物种质创新与特色农业重点实验室,湖北武汉,430074 |
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| 基金项目： | 中国科学院知识创新工程重要方向项目“草坪种质资源收集、评价与种质创新(KSCX2-YW-N-068)” |
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| 摘 要： | 根据《中国植物志》和地方植物志的记载，以沿海7省及安徽省为重点考察地区，对中国野生结缕草（Zoysia spp.）资源进行调查和采样，以深入了解现有野生结缕草资源的分布和变化情况，并通过水培法鉴定了所采样品的耐盐性。结果显示，大部分地区结缕草资源分布基本保持原分布，部分地区由于经济开发结缕草资源减少甚至消失，种质资源的保护面临严峻的考验。水培试验对野生结缕草的耐盐性初步鉴定显示，结缕草的耐盐性良好，所有材料在200 mol·L-1 NaCl溶液中可以正常生长，不同材料的耐盐程度范围为200~600 mol·L-1NaCl。试验证明，野生结缕草具有丰富的耐盐差异，是值得保护的优异草坪草耐盐育种材料。针对我国结缕草现有资源状况，本研究提出几点保护措施：迁地保护；加强结缕草新品种的育种和推广运用；规范结缕草的种子生产和销售；合理的利用保护；制定可持续性资源管理政策。
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| 关 键 词： | 结缕草属 野生资源保护 耐盐多样性 调查 |
China littoral region wild Zoysia distribution and salt tolerance evaluation |
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| LIU Li,HU Tao,FU Jin-min.China littoral region wild Zoysia distribution and salt tolerance evaluation[J].Pratacultural Science,2012,29(8):1250-1255. |
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| Authors: | LIU Li HU Tao FU Jin-min |
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| Institution: | (Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden/Wuhan Institute of Botany,Chinese Academy of Sciences,Wuhan 430074,China) |
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| Abstract: | Based on the records of flora of China and local floras,distribution and change of wild Zoysia spp.in 7 littoral provinces and Anhui province were investigated in the study.Furthermore,salinity tolerances of different accessions from various provinces were identified by using hydroponics methods.The results showed that Zoysia spp.resources could be founded in most distribution regions,but reduced or disappeared in some economic developed regions.The experiment proved that wild Zoysia spp.possessed a good salinity tolerance.All accessions could grow well under 200 mol·L-1 NaCl stress.The salt-tolerances of different accessions were ranged from 200 to 600 mol·L-1 NaCl,which proved that Zoysia spp.was good resourse for salt-tolerant plant breeding.However,the status of resource protection with regard to Zoysia spp.wis not optimistic in China.It is very urgent to be resolved.Based on our investigation,some protection strategies of Zoysia spp.resources in China were proposed: firstly,ex situ conservation;secondly,strengthening breeding and promoting usage of new varieties in Zoysia;thirdly,standardizing the seed production and sale pricedure;fourthly,reasonable exploitation of wild resources;and finally,making sustainable resource protection policies. |
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| Keywords: | Zoysia wild resources conservation salt-tolerant diversity investigation |
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