应用生态学报2017，Vol.28Issue(5)：1595-1602,8.DOI:10.13287/j.1001-9332.201705.010
不同比例红蓝光对番茄幼苗生长和光合作用的影响
Effects of different proportions of red and blue light on the growth and photosynthesis of tomato seedlings
摘要
Abstract
In order to explore the mechanism of response of growth and development of tomato seedlings to the combination of red and blue light,the light-emitting-diodes (LEDs) as precision modulation light sources were used in this study with 7 treatments including red (R) light,blue (B) light and combination of R+B light (9R1B,6R1B,3R1B,1R1B,1R3B),white (W) light as control,and the effects of different proportions of R and B light on the growth,photosynthetic pigment content,photosynthetic characteristics,chlorophyll fluorescence and root activity of tomato seedlings with variety of ‘ SV0313TG’ as experiment material were studied.The results showed that there were significant differences in growth of tomato seedlings under treatments of different proportions of R and B light.The plant height,specific leaf area and intercellular CO2 concentration of tomato seedlings were significantly promoted by R light,while Fv/Fm and ΦPSⅡ were decreased,the root growth was inhibited as the root activity declined,so that the seedling index was reduced.The seedling growth was significantly suppressed under B light and the chlorophyll content was decreased,while the chlorophyll a/b was enhanced.Furthermore,combination of R+B light was beneficial to the growth and development of tomato seedlings,and the plant dry mass,chlorophyll content and photosynthetic performance were significandy increased under 3R1 B.In addition,seedlings grew strongly and had the highest value of seedling index under this treatment.In conclusion,the combination of R+B light could promote photosynthetic pigment content and photosynthetic efficiency in leaves of tomato seedlings,as well as plant growth,especially for treatment of 3R1B.关键词
光质/番茄/光合色素/光合特性/叶绿素荧光Key words
light quality/tomato/photosynthetic pigment content/photosynthetic characteristics/chlorophyll fluorescence引用本文复制引用
王丽伟,李岩,辛国凤,魏珉,米庆华,杨其长..不同比例红蓝光对番茄幼苗生长和光合作用的影响[J].应用生态学报,2017,28(5):1595-1602,8.基金项目
本文由国家自然科学基金项目(31401921)、山东省自然科学基金项目(ZR2014CQ029)、现代农业产业技术体系专项资金项目(CARS-25)、国家科技支撑计划项目(2014BAD05B03,2012BAD11B01)、国家公益性行业(农业)科研专项(201303108)和国家重点研发计划项目(2016YFB0302403)资助 This work was supported by the National Natural Science Foundation of China (31401921),the Natural Science Foundation of Shandong Province (ZR2014CQ029),the China Agriculture Research System (CARS-25),the National Science & Technology Support Program of China (2014BAD05B03,2012BAD11B01),the special Fund for Agro-scientific Research in the Public Interest (201303108),and the National Key Research and Development Program of China (2016YFB0302403). （31401921）
