| 中国主要地区结缕草属植物种质资源抗旱性变异分析 |
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| 引用本文： | 胡化广,张振铭,季芳芳,刘建秀.中国主要地区结缕草属植物种质资源抗旱性变异分析[J].草地学报,2014,22(2):224-228. |
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| 作者姓名： | 胡化广 张振铭 季芳芳 刘建秀 |
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| 作者单位： | 1. 盐城师范学院生命科学与技术学院, 江苏 盐城 224051;2. 江苏省中国科学院植物研究所（南京中山植物园）, 江苏 南京 210014 |
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| 基金项目： | 国家自然科学基金项目(31101561);江苏省高校自然科学研究项目(11KJD210003)(10KJD210003);盐城师范自然科学基金(10YCKL006)资助 |
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| 摘 要： | 抗旱性是植物重要的节水性状，探索结缕草属（Zoysia Willd.）植物种质资源的抗旱性变异可为该属植物抗旱育种和抗旱机理研究奠定重要基础。以目前国内园林绿化中广泛应用的青岛结缕草（Z. japonica‘Qingdao’）和沟叶结缕草（Z. matrella）为对照，采用表征永久萎蔫系数法对中国结缕草属植物5种、2变种共31份种质的抗旱性变异进行研究。结果表明：中国结缕草属植物的表征永久萎蔫系数存在丰富的变异，其变异范围为4.34%～9.28%，变异系数为24.41%；且植物抗旱性存在极显著差异，表征永久萎蔫系数显著低于青岛结缕草的有14份种质，显著低于沟叶结缕草的有7份。不同种植物抗旱性也不同，各种及变种的表征永久萎蔫系数依次为：日本结缕草（Z. japonica）<细叶结缕草（Z.tenuifolia）<沟叶结缕草<青结缕草（Z. japonica var. pollida）<中华结缕草（Z. sinica）<长花结缕草（Z. sinica var. nipponica）<大穗结缕草（Z. macrostachya）；4个种的变异系数依次为：细叶结缕草<中华结缕草<沟叶结缕草<日本结缕草。抗旱性在日本结缕草和中华结缕草种内存在极显著差异；中国结缕草属植物、日本结缕草和中华结缕草的抗旱性与地理分布均不具有明显相关性。
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| 关 键 词： | 中国结缕草属植物 种质资源 抗旱性 变异 |
| 收稿时间： | 2013-07-30 |
Variation Analysis of Drought Resistance of Germplasm Resources of Zoysia Willd. in Chinese Main Region |
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| HU Hua-guang,ZHANG Zhen-ming,JI Fang-fang,LIU Jian-xiu.Variation Analysis of Drought Resistance of Germplasm Resources of Zoysia Willd. in Chinese Main Region[J].Acta Agrestia Sinica,2014,22(2):224-228. |
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| Authors: | HU Hua-guang ZHANG Zhen-ming JI Fang-fang LIU Jian-xiu |
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| Institution: | 1. School of Life Science and Technology, Yancheng Teachers University, Yancheng, Jiangsu Province 224051, China;2. Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing Botanical Garden, Nanjing, Jiangsu Province 210014, China |
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| Abstract: | Drought resistance is an important trait of water-saving. The variation analysis of drought resistance of zoysiagrass (Zoysia Willd.) will provide an important basis for breeding and the study of drought- resistance mechanisms. The apparent permanent wilting indices of 31 accessions of five zoysiagrass species and two variants in China were studied using Z. japonica ‘Qingdao’ and Z. matrella as controls. Results showed that the range of variation in the apparent permanent wilting indices of 33 accessions was 4.34%～9.28%, and the coefficient of variation was 24.41%. The apparent permanent wilting indices were highly significant difference among 33 accessions. The apparent permanent wilting indices of 14 accessions were significantly lower than that of Z. japonica ‘Qingdao’, while the apparent permanent wilting indices of 7 accessions were significantly lower than that of Z. matrella. The apparent permanent wilting indices of five species and two variants were ranked as Z. japonica <Z. tenuifolia <Z. matrella <Z. japonica var. pollida <Z. sinica <Z. sinica var. nipponica <Z. macrostachys. The coefficients of variation of four species were ranked as: Z. tenuifolia <Z. sinica <Z. matrella <Z. japonica. There were obvious differences in drought resistance between Z. sinica and Z. japonica. There was no significant linear correlation between the collection sites and drought resistances of Zoysia Willd., Z. sinica and Z. japonica. |
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| Keywords: | Chinese Zoysia Willd Germplasm resources Drought resistance Variation analysis |
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