红蓝单色光对水培烟草幼苗生长发育及生理特性的影响  

Effects of red and blue monochromatic lights on growth, development and physiological characters of hydroponic tobacco seedlings

作　　者：孟霖[1,2] 徐宜民[1] 宋文静[1] 王程栋[1] 刘晓冰[1,2] 梁盟[1,2] 王树声[1] 

机构地区：[1]中国农业科学院烟草研究所农业部烟草生物学与加工重点实验室,山东青岛科苑经四路11号266101 [2]中国农业科学院研究生院,北京中关村南大街12号100081

出　　处：《中国烟草学报》2015年第5期55-61,共7页Acta Tabacaria Sinica

基　　金：国家烟草专卖局特色优质烟叶开发重大专项"中间香型特色优质烟叶生态基础研究"课题(TS-02-20110012)

摘　　要：为培育壮苗及优化烟草育苗光环境提供依据,以烤烟品种K326为材料,在水培条件下,研究了两种单色光处理对烟草幼苗生长发育及生理特性的影响。结果表明,与对照白光处理相比,红光处理下的烟苗叶片面积和地上部鲜重均显著增加,增幅分别为49.8%和48.8%,而蓝光明显抑制了叶片的发育;蓝光处理下的烟苗茎秆的高度显著增加,增幅为59.2%,而红光明显抑制了烟苗茎秆的伸长;就根系而言,红光处理下烟苗根系鲜重、一级侧根数量、二级侧根数量及根系表面积均显著高于白光对照和蓝光处理;不同光质处理下,烟苗叶片中叶绿素和类胡萝卜素含量大小依次均为:白光>红光>蓝光;红光和蓝光处理下烟苗的净光合速率、气孔导度均略低于对照白光处理,但红光处理烟苗光合速率降低是由非气孔因素限制所致,而蓝光处理则可能是由气孔导度降低所致。To provide a basis for optimization of light condition in tobacco seedling greenhouse, the effects of red and blue monochromatic lights on tobacco seedling growth and development were studied with white light treatment as control. Results showed that red light increased leaf area and fresh biomass by 49.8% and 48.8% while blue light curbed the growth of tobacco leaves. Blue light increased stalk height by 59.2% while red light did not. Fresh biomass, 1° and 2° lateral root numbers and root superficial area outweighed those under blue and while light. Content of chlorophyll and carotenoid varied under different light conditions with that under white light being the highest, that under blue light being the lowest and that under white light standing in-between. Net photosynthetic rate and stomatal conductance under red and blue light were slightly lower than those under white light. Blue light inhibited the photosynthesis by decreasing Gs while red light inhibited photosynthesis due to nonstomatal factors.

关 键 词：单色光 水培 烟草幼苗 生长发育 根系 

分 类 号：S572[农业科学—烟草工业]