摘要
以黄瓜品种绿剑为材料,幼苗出土后外源施用不同浓度(100、150、200 mg·L^-1)的调环酸钙(Pro-Ca),研究调环酸钙对黄瓜穴盘幼苗徒长的防控效果。结果表明,喷施一定浓度调环酸钙可有效抑制下胚轴长和株高,提高G值、根冠比、壮苗指数和根系活力,促进光合作用,显著提高叶片叶绿素含量、净光合速率、蒸腾速率、气孔导度,显著降低胞间二氧化碳浓度,降低幼苗叶片中IAA和GA3水平,提高ZR的水平。外源施用150 mg·L^-1调环酸钙效果最好,可有效调控黄瓜幼苗株型,提高幼苗素质,利于壮苗培育。
Taking cucumber variety‘Lyujian’as material,this paper studied the effects of Prohexadioncalcium(Pro-Ca)for controlling over growth of plug seedlings by applying different Pro-Ca concentration(100,150,200 mg·L^-1).The result showed that spraying Pro-Ca of certain concentration could effectively inhibit the hypocotyl length and plant height;improve G value,root-shoot ratio,strong seedling index,root system activity;and promote the photosynthesis,significantly increase chlorophyll content of leaves,net photosynthetic rate,transpiration rate and stomatal conductance,significantly decrease intercellular carbon dioxide concentration,decrease the level of IAA,GA3 and increase the level of ZR.Applying Pro-Ca of 150 mg·L^-1 could have the best effects,effectively controlling the plant type of cucumber seedlings,improving seedling quality and being beneficial to cultivate strong seedlings.
作者
李瑞
蒋欣梅
刘汉兵
邵琪锋
吴凤芝
于锡宏
LI Rui;JIANG Xin-mei;LIU Han-bing;SHAO Qi-feng;WU Feng-zhi;YU Xi-hong(Key Laboratory of Biology and Genetic Improvement of Horticultural Crops(Northeast Region),Ministry of Agriculture and Rural Affairs,School of Horticulture and Landscape,Northeast Agricultural University,Harbin 150030,Heilongjiang,China)
出处
《中国蔬菜》
北大核心
2020年第3期33-37,共5页
China Vegetables
基金
国家大宗蔬菜产业技术体系专项(CARS-23-B10)
黑龙江省现代农业产业技术协同创新体系项目。
关键词
调环酸钙
幼苗徒长
幼苗素质
光合作用
内源激素
Prohexadion-calcium
Over growth of seedlings
Seedling quality
Photosynthesis
Endogenous hormone
