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聚乙二醇模拟水分胁迫对桑树种子萌发和生理的影响 预览 被引量:24

Effects of Polyethylene Glycol(PEG)-simulated Drought Stress on Mulberry Seed Germination and Physiology
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摘要 以丰驰桑种子为材料,研究了不同浓度(0、1.0、2.5、5.0、7.5、10.0g/L)的聚乙二醇-6000(PEG-6000)模拟干旱处理对桑树种子发芽和生理的影响。结果表明:用1%PEG处理后,种子的平均发芽速度、发芽率开口发芽势较对照高;其他处理随胁迫强度的增加呈现明显下降趋势(均低于对照)。10%PEG处理的种子在试验开始第5天后仍禾萌发。随胁迫加重脯氨酸含量先降低后升高;而可溶性蛋白和可溶性糖含量随胁迫加重呈上升趋势。 Fengci mulberry seeds being used as material, the effects of the different contents of polyethylene glycol (PEG)(0, 1, 2.5, 5, 7.5 and 10 g/L-simulated drought stress on mulberry seed germination and physiology were studied. The results showed that the germination velocity, ratio and potential of the seeds that were treated with 1% PEG were higher than the CK, but those of other treatments were obviously decreased as the increase of the content of PEG. The seeds treated with 10 %PEG did not germinate after 5 days. The proline content was decreased when they were treated with low content of PEG and increased when they were treated with high content of PEG, but the content of dissoluble protein and sugar was increased along with the increase of the content of PEG.
作者 程嘉翎 段建丽 王娜 肖龙云 CHENG Jia-ling ,et al (Sericuhural Research Institute, Chinese Academy of Agricultural Sciences, Zhenjiang, Jiangsu 212018 )
出处 《安徽农业科学》 CAS 北大核心 2006年第24期 6420-6422,共3页 Journal of Anhui Agricultural Sciences
关键词 水分胁迫 桑树种子 发芽率 聚乙二醇(PEG) 脯氨酸 Simulated drought stress Mulberry seed Germination ratio Polyethylene glycol Proline
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