《植物生理学报》 2009, 45(7): 673-676

高温春化逆转对甘蓝体内核酸类物质含量的影响

蒋欣梅, 赵荣秋, 于锡宏*

东北农业大学园艺学院, 哈尔滨150030

通信作者：于锡宏；E-mail: yxh100@sohu.com；Tel: 0451-55190300

摘　要：

甘蓝早熟品种‘8398’ 长至6片真叶和中熟品种‘京丰’长至7片真叶时进行绿体春化处理, 前者处理18 d和后者处理23 d 时用37 ℃高温进行春化逆转后检测植株体内核酸的结果表明, 核酸、DNA和RNA含量以及RNA/DNA比值显著下降, 而正常春化的植株则均呈缓慢上升趋势。

关键词：甘蓝; 春化逆转; 核酸代谢

收稿：2009-04-13   修定：2009-05-21

资助：东北农业大学创新团队课题(CXT002 -2-2)

Effect of Devernalization on Nucleic Acid Content of Cabbage

JIANG Xin-Mei, ZHAO Rong-Qiu, YU Xi-Hong*

College of Horticulture, Northeast Agricultural University, Harbin 150030, China

Corresponding author: YU Xi-Hong; E-mail: yxh100@sohu.com; Tel: 0451-55190300

Abstract:

After vernalization ‘8398’ cabbage plants with 6 true leaves and ‘jingfeng’ cabbage plants with 7 true leaves for 18 d and 23 d, respectively, devernalization were treated at high temperature of 37 ℃ in order to explore the effects on nucleic acid content in cabbage. The results suggested that cabbage plants had the nucleic acid concentration, RNA content, DNA content and RNA/DNA ratio decreased dramatically in response to high temperature while the control had a modest increase under vernalization period.

Key words: cabbage; devernalization; metabolism of nucleic acid