摘要
为研究UV-B对烤烟生长和生理代谢的影响,为生产优质烟叶提供参考依据,通过盆栽试验,采用3个不同UV-B辐射强度对烤烟幼苗进行辐射处理,以UV-B辐射处理7d后幼苗的新鲜叶片测定各项生理指标。结果表明:烤烟幼苗干物质随着UV-B辐射强度的增加而降低;高UV-B辐射使叶片中色素含量降低,叶绿素a、叶绿素b含量低于对照,类胡萝卜素含量受UV-B增加的影响相对较小;丙二醛含量在高UV-B辐射下含量明显增高;脯氨酸、类黄酮等紫外线吸收物质含量随着UV-B辐射强度的增加而增加。
Pot experiments were conducted to study effects of different UV-B radiation on growth and physiological index of flue-cured tobacco （Nicotiana tabacum L. K326） seedling. Results showed that intensified UV-B radiation reduced dry weight, chlorophyll a, chlorophyll b, and total chlorophyll content. Slight effect was pbserved on carotenoid content intensified UV-B radiation had significant effect on malondialdehyde. The content of proline and flavonoid, as natural osmotic substance in tobacco leaves were also increased with intensified UV-B radiation.
出处
《中国烟草学报》
EI
CAS
CSCD
2011年第4期47-50,共4页
Acta Tabacaria Sinica
基金
云南省烟草公司科技项目“云南烤烟清香型风格物质基础研究”(07A01)
“云南省烤烟质量形成的光环境生理基础研究”(2010YN03)
关键词
烤烟
幼苗
紫外线-B
质体色素
丙二醛
脯氨酸
紫外吸收物
flue-cured tobacco
seedling
Ultraviolet-B radiation
pigment
malondialdehyde
proline
Ultraviolet-B absorbing compounds
