DIS过程中烤烟叶片腺毛形态结构及分泌物变化

Acta Agriculturae Jiangxi(2010)

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Abstract
采用黑暗诱导衰老(DIS)处理方法,对烤烟叶片腺毛的形态结构进行了显微观察。结果发现叶龄50 d时,长柄腺毛已经成熟,并向外溢泌物质。随着叶片衰老加剧,腺毛头部开裂,内含物外泄,腺毛柄同时变干缩。处理后9 d时腺毛整体萎缩甚至脱落。在这个过程中,腺毛分泌物主要成分西柏三烯二醇含量上升,与其降解产物茄酮含量变化一致。烟碱含量在腺毛头部细胞开裂后迅速上升,并在叶面积累。
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Key words
Tobacco leaf,Secretion,Senescence,Microstructure of tentacle
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