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摘要:
Total 20 maize varieties were subjected to drought stress at flowering stage,and then the relative water content,soluble sugar content,chlorophyll content,malondialdehyde( MDA) content and superoxide dismutase( SOD) activity in their leaves,as well as their yields were determined. The drought tolerance of the physiological and biochemical indexes was scored by five-level scoring method,and the drought tolerance index was calculated by the yield index to comprehensively evaluate the drought tolerance of maize during flowering stage. The results showed that the scores of drought tolerance of the maize varieties ranged from 1. 929 3 to 5. 659 5. Among them,the scores of Zhengda 619,Guidan 162 and Guidan 0810 were greater than 5. 0,followed by Dika 008,Xianyu 30 T60,Xianzhengda 901,Qingnong 68,South America No. 1 and Wanchuan 1306 of which the scores were in the range of 4. 0-5. 0. The drought tolerance indexes were in the range of 0. 410 4-1. 096 3. Among the test maize varieties,the drought tolerance indexes of Guidan 0810,Pacific 99 and Zhengda 619 were greater than 1. 0,and those of Xianyu 30 T60,Dika 008 and South America No. 1 were in the range of 0. 9-1. 0. The correlation between the two kinds of evaluation results was 0. 588 7 and was extremely significant. The five-level scoring method and the drought tolerance index can be used simultaneously for the evaluation of drought tolerance of maize during flowering stage. The two aspects of evaluation results showed that Guidan 0810,Zhengda 619,Xianyu 30 T60,Dika 008 and South America No. 1 were drought-tolerant varieties,among which Guidan 0810 and Zhengda 619 were extremely highly drought-tolerant varieties.
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篇名 Drought Tolerance Identification and Eevluation of Maize during Flowering Stage in Guangxi
来源期刊 亚洲农业研究:英文版 学科 农学
关键词 MAIZE DROUGHT TOLERANCE identification DROUGHT TOLERANCE index DROUGHT stress FLOWERING STAGE
年,卷(期) 2019,(6) 所属期刊栏目
研究方向 页码范围 77-84
页数 8页 分类号 S
字数 语种
DOI
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研究主题发展历程
节点文献
MAIZE
DROUGHT
TOLERANCE
identification
DROUGHT
TOLERANCE
index
DROUGHT
stress
FLOWERING
STAGE
研究起点
研究来源
研究分支
研究去脉
引文网络交叉学科
相关学者/机构
期刊影响力
亚洲农业研究:英文版
月刊
1943-9903
安徽省合肥市庐阳区农科南路40号安徽省农
出版文献量(篇)
3331
总下载数(次)
4
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