Effects of Different Prohexadion-calcium Concentration on Controlling Over Growth of Cucumber Seedlings
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
Abstract：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．
李瑞，蒋欣梅，刘汉兵，邵琪锋，吴凤芝，于锡宏. 不同浓度调环酸钙对黄瓜幼苗徒长防控的影响[J]. 中国蔬菜, 2020, 1(3): 33-37.
LI Rui,JIANG Xin-mei,LIU Han-bing，SHAO Qi-feng，WU Feng-zhi，YU Xi-hong. Effects of Different Prohexadion-calcium Concentration on Controlling Over Growth of Cucumber Seedlings. China Vegetables, 2020, 1(3): 33-37.
