| 结缕草属植物致死含水量的研究 |
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| 引用本文： | 胡化广,刘建秀,张振铭.结缕草属植物致死含水量的研究[J].草地学报,2009,17(4):532-536. |
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| 作者姓名： | 胡化广 刘建秀 张振铭 |
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| 作者单位： | 1. 江苏省中国科学院植物研究所, 南京中山植物园, 南京, 210014;2. 盐城师范学院生命科学与技术学院, 江苏, 盐城, 224051 |
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| 基金项目： | 国家自然科学基金项目，科技部"863"项目 |
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| 摘 要： | 为研究结缕草属(Zoysia)植物的耐旱能力,并对耐旱能力强的结缕草品种的选育以及极度干旱地区结缕草草坪的水分管理提供实验依据.在2005年对51份结缕草种源抗旱性初步鉴定的基础上,于2006年选择9份抗旱性代表种源,对其致死含水量进行研究,并对其与表征永久萎蔫系数进行相关分析.结果表明:9份材料致死含水量变异范围为3.01%∽6.14%,变异系数为25.21%,9份材料的致死含水量存在极显著差异(P<0.01);表征永久萎蔫系数相对于致死含水量存在极显著的线性正相关关系(P<0.01),回归方程为:Y=1.57X+3.88(R2=0.9217>R0.012=0.6354);根据表征永久萎蔫系数与致死含水量的线性回归方程,得出其他42份种源的致死含水量,其变异范围为3.62%∽5.64%,变异系数为10.85%.
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| 关 键 词： | 结缕草 致死含水量 表征永久萎蔫系数 |
| 收稿时间： | 2008-11-18 |
Study on Lethal Water Content of Zoysia Willd. |
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| HU Hua-guang,LIU Jian-xiu,ZHANG Zhen-ming.Study on Lethal Water Content of Zoysia Willd.[J].Acta Agrestia Sinica,2009,17(4):532-536. |
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| Authors: | HU Hua-guang LIU Jian-xiu ZHANG Zhen-ming |
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| Institution: | 1. Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing Zhongshan Botanical Garden, Nanjing, Jiangsu Province 210014, China;2. School of Life Sciences and Technology, Yancheng Normal University, Yancheng, Jiangsu Province 224051, China |
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| Abstract: | It is very important to identify the drought tolerance of target grass species in turf establishment of utmost arid area.In order to study the drought tolerance of Zoysia Willd.,9 accessions were selected in 2006 to study their lethal water content(LWC) and its relationship with apparent permanent wilting index(APWI) based on the drought resistance assessment of 51 accessions of Zoysia Willd.in 2005.The results are as follows: the variation range of lethal water content of 9 accessions was 3.01 to 6.14% wit... |
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| Keywords: | Zoysia Willd Lethal water content Apparent permanent wilting index |
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