光质对花生幼苗根系生长与根系活力的影响-农学学报.PDF

农学学报 2013,3(08): 17-20 Journal of Agriculture 光质对花生幼苗根系生长与根系活力的影响 闫萌萌，王铭伦，王洪波，王月福，赵长星 （青岛农业大学农学与植物保护学院/ 山东省旱作农业技术重点实验室，山东青岛266109 ） 摘 要：揭示不同波长单色光照对花生幼苗根系生长和根系活力的效应，为深入研究其相关机理提供依 据。在花生出苗后，将幼苗置于不同波长和自然光照的LEDs 光源下生长，研究光质对幼苗根系生长和 根系活力的影响。与自然光照相比，红光(610~660 nm) 可显著促进花生苗期根系生长，主侧根长、侧根 数量多、干物质积累多，根系活力强；蓝光(445~470 nm)对幼苗根系生长有明显的抑制作用，根系分布范 围小，但根系活力较高；黄光(590~595 nm)和绿光(515~520 nm)抑制幼苗根系生长，根系长势弱，根系活 力也较低。红光显著促进花生幼苗根系生长，提高根系活力；蓝光、黄光和绿光均显著抑制根系生长。 关键词：花生；光质；幼苗；根系生长；根系活力 中图分类号：S3 文献标志码：A 论文编号：2013-0240 Effect of Light Quality on the Growth and Vitality of Peanut Seedling Root System YanMengmeng,WangMinglun,WangHongbo,WangYuefu,ZhaoChangxing (Shandong Provincial Key Laboratory of Dryland Farming Technology/College of Agronomy and Plant Protection, Qingdao Agricultural University,Qingdao266109,Shandong,China) Abstract:Thisstudyaimedtoexploretheeffectofmonochromaticlightindifferentwavelengthonrootsystem developmentandvitalityofpeanutseedling,inordertoprovidetheoreticalbasisforfurtherresearchonrelated mechanism.Thepeanutseedlingwereputinlightwithdifferentwavelengthandnaturallightafterbeing emergence,usedtoanalysistheeffectoflightqualityonrootsystemdevelopmentandvitalityinpeanut seedling stage. Compared with natural light, red light (610-660 nm) could promote the root system development of peanut seedling significantly, longer main root and lateral root length, more lateral root numbers,higherrootvitality.Bluelight(445-470 nm)hadasignificantinhabitationonrootdevelopment, smallerrootsystemdistributionrange,buthigherrootvitality.Yellowlight(590-595 nm)andgreenlight (515-520 nm)couldinhibitthedevelopmentofpeanutseedlingrootsystem,weakrootsystem,lowerroot