Effects of Different Concentrations of Paclobutrazol on Seedling Quality of Small Seedless Watermelon in Autumn  

作　　者：Shengqi MU Jin XU Xuesong YOU Jianbo ZENG Ying ZHANG Yanli CHEN Chao MA 

机构地区：[1]Beijing Agricultural Technology Extension Station,Beijing 100029,China

出　　处：《Plant Diseases and Pests》2023年第2期1-3,共3页植物病虫害研究（英文版）

基　　金：Beijing Innovation Consortium of Special Crops Research System(BAIC04-2022).

摘　　要：[Objectives]The paper was to explore the effects of different concentrations of paclobutrazol on seedling quality of small seedless watermelon in autumn.[Methods]The leaves of watermelon seedlings were sprayed with 30,50,80 and 120 mg/L paclobutrazol at cotyledon expansion stage,and those sprayed with tap water were used as control.[Results]All the treatments of paclobutrazol effectively inhibited the excessive growth of watermelon at seedling stage,significantly enhanced the leaf quality of watermelon seedlings and promoted root growth.The seedlings treated by 50 mg/L paclobutrazol had the best performance compared with the control:a decrease of hypocotyl by 37.9%,an increase of plant dry weight by 46.55%,significantly increased seedling strength index,deep green leaf color,thick leaves,an increase of specific leaf weight by 28.13%,and significantly heavier root weight and longer length.[Conclusions]The results will provide a reference for strong seedling cultivation of small seedless watermelon.

关 键 词：PACLOBUTRAZOL Small seedless watermelon SEEDLING Excessive growth 

分 类 号：S651[农业科学—果树学]