不同光质光周期对樱桃萝卜生长发育及营养品质的影响  

Effect of Different Light Quality and Photoperiods on Growth Development and Nutritional Quality of Cherry Radish

作　　者：陈冰星 王晓倩 刘涛[1] 王苏苏 Gefu WANG-PRUSKI 赖钟雄[2] 郭容芳[1,2] CHEN Bingxing;WANG Xiaoqian;LIU Tao;WANG Susu;Gefu WANG-PRUSKI;LAI Zhongxiong;GUO Rongfang(Joint FAFU-Dalhousie Lab, College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China;2Institute of Horticultural Biotechnology, Fujian Agriculture and Forestry University, Fuzhou 350002, China;3Department of Plant, Food and Environmental Sciences, Faculty of Agriculture, Dalhousie University, Truro NS B2N 5E3, Canada)

机构地区：[1]福建农林大学园艺学院福建农林大学-戴尔豪西联合实验室,福州350002 [2]福建农林大学园艺植物生物工程研究所,福州350002 [3]戴尔豪西大学农学院,加拿大特鲁罗NSB2N5E3

出　　处：《西北植物学报》2020年第1期77-86,共10页Acta Botanica Boreali-Occidentalia Sinica

基　　金：福建省教育厅中青年教师教育科研项目(KXML2006);博士后启动经费(132300155);博士后第10批特别资助(2017T100464)。

摘　　要：光质和光周期可以调节植物生长过程中肉质根等地下贮藏器官的形成。该试验以‘昆优2号’樱桃萝卜为试验材料,以白光(W)为对照,研究8R2B、5R5B、2R8B红蓝光配比光质(红蓝光比例分别为8∶2、5∶5、2∶8)与8L/16D、12L/12D、16L/8D光周期(光照/黑暗分别为8 h/16 h、12 h/12 h、16 h/8 h)组合对樱桃萝卜生长发育和营养品质的影响,筛选适合樱桃萝卜生长的光质光周期组合。结果表明:长光照(16L/8D)W、8R2B处理对樱桃萝卜叶片生长、肉质根大小、根冠比都有显著的促进作用,长光照W有利于樱桃萝卜更快形成膨大的肉质根;长光照W、8R2B处理下的樱桃萝卜肉质根多酚含量、抗氧化能力差异不大;长光照W利于樱桃萝卜肉质根可溶性糖、可溶性蛋白积累,长光照8R2B有利于肉质根可溶性蛋白积累。研究发现,适当的光质和光周期组合可显著促进樱桃萝卜叶片生长、肉质根膨大以及根中营养物质的积累,从而获得良好的长势和营养品质,并以长光照(16L/8D即光照/黑暗为16 h/8 h)白光组合最佳。Light quality and photoperiod can regulate the formation of underground storage organs such as fleshy roots during plant growth.In this test,‘Superior Queen No.2’cherry radish was used as the test material,and white light(W)was used as a control to study the red-blue light ratio of 8R2B,5R5B,and 2R8B(the ratio of red and blue light was 8∶2,5∶5,2∶8,respectively)and 8L/16D,12L/12D,16L/8D photoperiod(light/dark was 8 h/16 h,12 h/12 h,16 h/8 h,respectively)on the effects of the growth and quality of cherry radish,which is screening combinations of light and quality photoperiod suitable for cherry radish growth.The test results showed that:long light(16L/8D)W,8R2B treatment significantly promoted cherry radish leaf growth,fleshy root size and root-shoot ratio,and long light W was beneficial to cherry radish to form enlarged fleshy roots faster;The content of polyphenols and antioxidant capacity of cherry radish roots under long light W and 8R2B treatments were not significantly different;long light W was beneficial to the accumulation of soluble sugar and soluble protein in fleshy roots of cherry radish,and long light 8R2B was beneficial to the accumulation of soluble proteins in fleshy roots.The study found that the appropriate combination of light quality and photoperiod can significantly promote cherry radish leaf growth,fleshy root enlargement,and accumulation of nutrients in the root,thereby obtaining good growth and nutritional quality.The combination of long light(16L/8D)and white light was the best.

关 键 词：樱桃萝卜 光质 光周期 抗氧化能力 可溶性糖 可溶性蛋白 

分 类 号：Q945.79[生物学—植物学]