Effects of Boron on Yield and Quality of Four Varieties of Sweet Potato
Abstract：Taking 4 varieties of sweet potato (Shangshu 1 9,Qingzi 1 ,Yanshu 25 and Longshu 9)as materials,the effects of applying boron (B)on their yield and quality were studied.The results indicated that the photosynthate transport could be promoted to storage root and the tuber yield and soluble protein content could be increased by appropriate B application.The effects of boron application on the sweet potato were dif-ferent between varieties.The soluble sugar content in root of Qingzi 1 could be improved.The transformation of soluble sugar to starch in Shangshu 1 9 and Yanshu 25 were promoted.But the effect of B on quality promo-tion was not significant in Longshu 9.Under the conditions of this experiment,the suitable application rate of boron was 1 5 kg/hm2 for fresh -eating varieties Yanshu 25 and Longshu 9,and that was 7.5 kg/hm2 for starch type variety Shangshu 1 9 and purple sweet potato variety Qingzi 1 .Excessive boron could reduce the sweet potato production and lead to the toxic symptoms on leaves.
Keywords：BoronSweet potatoYieldStarchSoluble sugarSoluble protein contentDry matter
Publication Date：2015-10-01
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：5( 49-53 )