| 陆稻苗期抗旱性鉴定指标筛选与评价 |
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| 引用本文： | 徐建欣,杨 洁,胡祥伟,苏子涵,王云月.陆稻苗期抗旱性鉴定指标筛选与评价[J].中国农学通报,2015,31(3):29-34. |
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| 作者姓名： | 徐建欣 杨 洁 胡祥伟 苏子涵 王云月 |
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| 作者单位： | 中国热带农业科学院热带作物品种资源研究所/农业部华南作物基因资源与种质创制重点实验室,中国热带农业科学院湛江实验站/热带旱作农业研究中心,云南农业大学/农业生物多样性与植物病害控制教育部重点实验室,云南农业大学/农业生物多样性与植物病害控制教育部重点实验室,云南农业大学/农业生物多样性与植物病害控制教育部重点实验室 |
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| 基金项目： | 基金项目：中央级公益性科研院所基本科研业务费专项资金“中国热带农业科学院热带作物品种资源研究所”(1630032014046)；国家“973”项目“利用农业生物多样性促进种质资源保护的作用、尺度及内在关联”(2006CB100205)。 |
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| 摘 要： | 为筛选出陆稻苗期抗旱性鉴定指标,以24个云南陆稻品种为材料,采用反复干旱存活率作为标准,分析各测定指标与抗旱性的相关关系并对供试品种的抗旱性进行综合评价。结果表明,心叶下倒1叶长、心叶下倒2叶长、心叶下倒2叶宽、根干重和根冠比等5个形态指标的相对值与反复干旱存活率呈显著或极显著的相关性,可作为苗期抗旱性鉴定的形态指标。以反复干旱存活率为因变量,5个综合指标为自变量建立的回归方程对24个供试品种的抗旱性进行预测,其结果与芽期抗旱鉴定呈显著相关关系。
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| 关 键 词： | 陆稻 苗期 抗旱鉴定指标 |
| 收稿时间： | 2014/6/29 0:00:00 |
| 修稿时间： | 2014/6/29 0:00:00 |
Screening and Evaluation of the Drought Resistance Identification Indexes of Upland Rice Varieties During Seedling Stage |
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| Xu Jianxin,Yang Jie,Hu Xiangwei,Su Zihan and Wang Yunyue.Screening and Evaluation of the Drought Resistance Identification Indexes of Upland Rice Varieties During Seedling Stage[J].Chinese Agricultural Science Bulletin,2015,31(3):29-34. |
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| Authors: | Xu Jianxin Yang Jie Hu Xiangwei Su Zihan and Wang Yunyue |
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| Institution: | Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences/Key Laboratory of Crop Gene Resources and Germplasm Enhancement in Southern China, Ministry of Agriculture, PRChina, Danzhou Hainan,Zhanjiang Experimental Station, Chinese Academy of Tropical Agricultural Sciences/Tropical Dry Farming Research Center, Zhanjiang Guangdong,Yunnan Agricultural University/Ministry of Education Key Laboratory for Agrobiodiversity and Plant Disease Management,Yunnan Agricultural University/Ministry of Education Key Laboratory for Agrobiodiversity and Plant Disease Management,Yunnan Agricultural University/Ministry of Education Key Laboratory for Agrobiodiversity and Plant Disease Management |
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| Abstract: | 24 Yunnan upland rice varieties were used as experimental materials in screening out identification index of drought resistance of upland rice during seedling stage. The results of correlation analysis of relative value of various traits and survival percentage under repeated drought condition showed that relative value of the length of first leaf under the central leaf, the length of second leaf under the central leaf, the width of second leaf under the central leaf, root dry weight and root-shoot ratio were significantly or very significantly correlated with the survival percentage under repeated condition, and these five indexes could be used as the morphological indexes to identify the drought resistance. The drought resistance of 24 upland rice varieties was evaluated by regression equation and the results indicated that it was feasible to predict the drought resistance in rice during seedling stage using integrated identification index. |
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| Keywords: | upland rice seedling stage identification index of drought resistance |
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