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食用向日葵杂交种根系形态和生物量对苗期干旱的响应

Dian-xiu SONG,Liang-ji CUI,De-xing WANG,Jin-gang LIU,En-yu SUN,Bing YI

Liaoning Agricultural Sciences（2020）

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Abstract
研究干旱胁迫对向日葵根系形态和生物量的影响,对向日葵抗旱育种和节水栽培具有重要意义.试验采用水培PEG模拟干旱胁迫的方式,对17份食用向日葵杂交种苗期的根系形态和生物量进行了比较分析.结果表明:苗期干旱胁迫下,食葵杂交种总根长和根尖数呈现增加趋势,根表面积、根体积和根平均直径呈现降低趋势.根干重和根冠比相对增加,而地上部干重和整株生物量的积累受到抑制.
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