Abstract

Info

Title:: Effect of La on the Soybean Quality under Elevated Ultraviolet-B Radiaion

Author(s):: REN Hong-yu1; 2; ZHOU Li-hua1; ZHU Xiao-xin1; GAO Zhen-yu1; LIU Xi1; ZHANG Xing-wen3; 1.Resources and Environmental Sciences College of Northeast Agricultural University,Harbin 150030,China;2.Municipal and Environmental Engineering College of Harbin Institute of Technology,Harbin 150001,China;3.Science College of Harbin Institute of Technology,Harbin 150001,China

Abstract:: Enhanced ultraviolet-B (UV-B)radiation may have side effects on plant quality and,lanthanum(La)is reported to have protective potential on plants under adverse environment.In this study,soybean cv. Dongnong 47 was planted in greenhouse,24 h after sprayed with LaCl₃ solutions(0,20,30,40,50,60 mg·L^-1)at seedling,flowering and both stage,soybean plants were exposed to supplementary UV-B radiation.Seed protein content(PC),fat content(FC)and their total content(PFC)were determined after harvest.All LaCl₃ sprayed at seedling decreased PC and PFC,while increased FC and,30?mg·L^-1 LaCl₃ significantly increased FC by 3.78%.LaCl₃ applied at flowering promoted PC,FC and PFC,except that of FC under 40 mg〖DK1〗·L-1LaCl₃,highest increment of PC(4.46%),FC(1.50%)and PFC(2.24%)were obtained at 40,60 and 40?mg·L^-1 LaCl₃,respectively.At both seedling and flowering,spraying 60 mg·L^-1 LaCl₃ increased PC by 0.64%,and 20?mg·L^-1 LaCl₃ increased FC by 0.46%.Results suggest under elevated UV-B irradiation,applying 40 mg·L^-1 LaCl₃ at flowering will contribute to the improvement of total content of protein and fat in soybean.