摘要
就人工气候室两种光源硫灯和氙灯引起黄瓜幼苗生长差异的原因进行了初步探讨。与生长在氙灯下的幼苗相比,硫灯下生长的幼苗较矮。组织细胞观察显示,硫灯下生长的黄瓜幼苗中胚轴表皮和皮层细胞纵向单位毫米长度所含细胞数目比氙灯下多。内源激素分析结果表明,硫灯下生长的黄瓜幼苗内源激素吲哚乙酸(IAA)和赤霉素(GA3)含量较氙灯下分别低17％和24％,而脱落酸(ABA)含量高31％。推测硫灯和氙灯下黄瓜幼苗生长的差异可能与内源激素调控有关。
The primary mechanism of growth difference of cucumber (Cucumis sativus L.) seedlings cultured under sulfur lamp and xenon lamp in a phytotron was investigated. Compared with cucumber seedlings grown under xenon lamp, those under sulfur lamp were shorter, and the cell number in the middle hypocotyls epidermis and cortex of them were more (Fig.1, Table 1). Endogenous hormone analysis indicates that the content of IAA and GA3 of seedlings under sulfur lamp were 17% and 24% lower, while ABA content was 31 % higher than that under xenonlamp (Fig.2). Based on these results, it is suggested that the growth difference between cucumber seedlings grown under sulfur lamp and under xenon lamp might be related to the control of endogenous hormones.
出处
《植物生理与分子生物学学报》
CAS
CSCD
2004年第6期687-690,共4页
Journal Of Plant Physiology and Molecular Biology
基金
国家自然科学基金项目(No.30270123)资助。~~
关键词
氙灯
硫灯
黄瓜
生长
内源激素
xenon lamp
sulfur lamp
cucumber
growth
endogenous hormone
