蔬菜徒长苗的形态及生理特征研究进展  

Research Progress on Morphological and Physiological Characteristics of Vegetable Leggy Seedlings

作　　者：王红飞[1] 尚庆茂[1] WANG Hong-fei;SHANG Qing-mao(Key Laboratory of Biology and Genetic Improvement of Horticultural Crops,Institute of Vegetables and Flowers,Chinese Academy of Agricultural Sciences,Collaborative Innovation Center of Protected Vegetable Surround Bohai Gulf Region,Beijing 100081,China)

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,环渤海湾地区设施蔬菜优质高效生产协同创新中心,北京100081

出　　处：《中国蔬菜》2017年第7期22-28,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)

摘　　要：蔬菜集约化育苗以多孔连体式穴盘为容器,密度高,根系发育空间小,基质缓冲能力弱,幼苗极易徒长。徒长苗形态及生理代谢迥异于正常苗,表现为下胚轴及节间显著伸长,叶片开展度增大、叶片变薄,根冠比降低,组织含水量提高,对生物和非生物逆境的适应性减弱等。本文就蔬菜徒长苗的形态特征、开花习性、抗性表达、生理代谢及相关防控技术等进行了简要综述,旨在为蔬菜徒长苗的防控及相关技术的开发提供参考。Intensive vegetable seedlings culture usually took with porous conjoined plug as container,whichhad high density,less space for root system development and weak buffer capacity of rhizosphere.It was very easyfor seedlings to over grown.The morphological and physiological metabolism of leggy seedlings were different fromthe normal ones,including elongated hypocotyl and internode,enlarged leaf angle,reduced leaf thickness androot to shoot ratio,increased moisture content in tissue,weakened adaptability to biotic and abiotic stress.Thisreview summarized the morphological characteristics of vegetable leggy seedlings,flowering habit,resistanceexpression,physiological metabolism and related preventing techniques,etc.,aiming at providing reference forpreventing leggy seedlings and developing related technology.

关 键 词：徒长苗 形态特征 开花习性 生理特征 环境因子 

分 类 号：S63[农业科学—蔬菜学]