| 李国龙,吴海霞,温丽,孙亚卿,张少英.甜菜苗期抗旱鉴定指标筛选及其综合评价[J].干旱地区农业研究,2011,29(4):69~74 |
| 甜菜苗期抗旱鉴定指标筛选及其综合评价 |
| Study on screening of drought resistance assessment indices and comprehensive evaluation of sugarbeet during seedling stage |
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| DOI：10.7606/j.issn.1000-7601.2011.04.13 |
| 中文关键词: 甜菜 苗期 抗旱性 隶属函数法 |
| 英文关键词:sugarbeet seedling stage drought resistance membership function method |
| 基金项目:国家甜菜产业技术体系项目资助(nycytx-25-04) |
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| 中文摘要: |
| 以30份甜菜种质为研究材料，通过室内盆栽苗期反复干旱胁迫试验，测定了与抗旱性有关的10项形态指标，通过主成分分析法筛选出了叶片长度、叶片宽度、地下生物量胁迫指数、根冠比胁迫指数、叶片厚度5个与抗旱性密切相关的指标，通过隶属函数法对30份甜菜种质进行综合评价，综合评价结果与存活率直接评价结果相关系数r=0.989，呈极显著相关，上述5个指标可作为甜菜苗期抗旱性鉴定的指标，并确定了苗期抗旱性较强的种质为：HI0466、BETA812、ID204。 |
| 英文摘要: |
| Ten traits indices were used for the evaluation of drought resistance of 30 sugarbeet germplasms in greenhouse during seedling stage under repeated drought stress. Through principal components analysis, five indices, namely leaf length, leaf width, underground biomass stress index, root/shoot stress index, and leaf thickness were screened, which had close relation to the drought resistance. With the membership function method, the drought resistance of 30 accessions of sugarbeet germplasms was evaluated. The correlation coef
ficient is 0.989 between the value of comprehensive evaluation and direct evaluation. Based on the value of comprehensive evaluation, the germplasms with strong drought resistance in seeding stage were: HI0466, BETA812 and ID204. |
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