温度、光照强度及渗透势对普通白菜下胚轴伸长的交互作用  

Interaction of Temperature,Light Intensity and Osmotic Potential on Brassica campestris L. ssp. chinensis(L.)Makino var. communis Tsen et Lee Hypocotyl Elongation

作　　者：王红飞[1] 李福凯[1] 尚庆茂[1,2] 

机构地区：[1]农业部园艺作物生物学与种质创制重点实验室,中国农业科学院蔬菜花卉研究所,北京100081 [2]环渤海湾地区设施蔬菜优质高效生产协同创新中心,辽宁沈阳110866

出　　处：《中国蔬菜》2017年第11期46-52,共7页China Vegetables

基　　金：国家自然科学基金项目(31172001);国家现代农业产业技术体系建设专项(CARS-25);公益性行业(农业)科研专项(201303014);中国农业科学院科技创新工程项目(CAAS-ASTIPIVFCAAS);现代农业人才支撑计划项目(2016)

摘　　要：以翠白3号为试材,研究温度、光照强度及渗透势对普通白菜下胚轴长度、伸长速率的影响,进一步分析单一环境因子的影响效应及复合环境因子的交互作用。结果表明:在温度、光照强度、渗透势协同作用条件下,不同处理间普通白菜下胚轴长度及伸长速率差异达极显著水平,其中弱光×高温×低渗处理的下胚轴长度、伸长速率均达到最大值,强光×低温×高渗处理最小。光照强度对下胚轴伸长的调控作用在下胚轴快速伸长期、平缓伸长期及伸长停滞期均达到极显著水平,温度和渗透势的影响效应仅在下胚轴快速伸长期达到极显著水平。不同环境因子间存在交互作用,温度×光照强度、光照强度×渗透势的交互作用分别在下胚轴快速伸长期和平缓伸长期达到极显著水平,光照强度×温度×渗透势的三因子互作效应在下胚轴快速伸长期达到极显著水平。综上,光照强度是影响普通白菜下胚轴伸长的主效环境因子,且与温度和渗透势存在一定的交互作用,这种交互作用在普通白菜下胚轴快速伸长期和平缓伸长期效应达极显著水平。This experiment took Brassica campestris L.ssp.chinensis（L.）Makino var.communis Tsen et Lee‘Cuibai No.3＇as material and investigated the effect of temperature,light intensity and osmotic potential on the length and elongation rate of hypocotyl.The paper also analyzed the influential effect of single environmental factor and its interaction with compound environmental factor.The results indicated that there existed extreme significant differences in length and elongation rate of hypocotyl,and the length and elongation rate reached maximum under the treatment of high temperature,low light and low permeability,and it was minimum under the treatment of low temperature,high light and high permeability.Illumination intensity could regulate Brassica campestris L.ssp.chinensis（L.）Makino var.communis Tsen et Lee hypocotyl elongation significantly in the stages of rapid elongation,gentle elongation and lag growth,while temperature and osmotic potential only had significant effect in the stage of rapid elongation.Interactions were existed among the 3 environmental factors.The interaction existed among different environment factors.The interaction between temperature×Illumination intensity,and Illumination intensity×osmotic potential reaced significant level in the stage of gentle and rapid elongation period, respectively.The interaction effects of illumination intensity×temperature×osmotic potential reached significant level in rapid elongation stage.In conclusion,illumination intensity was the major environment factor for hypocotyl elongation,and had certain interaction with temperature and osmotic potential.This interaction had significant effect in rapid and gentle elongation stages.

关 键 词：普通白菜 下胚轴 环境因子 互作效应 

分 类 号：S634[农业科学—蔬菜学]