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Title:: Effects of Different Seed Treatments on Agronomic Properties,Yield and Quality of Soybean under Drought Stress at Seedling Stage

Author(s):: ?YONG Tai-wen; LIU Xiao-ming; XIAO Xiu-xi; LIU Wen-yu; XU Ting; YANG Yang; YANG Wen-yu

Keywords:: Soybean; Drought stress; Seed treatment; Agronomic properties; Yield; Quality

Abstract:: ?In order to choose out the appropriate seeds treatment under drought stress conditions at soybean seedling stage,a pot cultivation experiment was conducted to explore the influence upon agronomic properties,yields and qualities of soybean(Glycine max(L),cv. Nandou 12)with four seed treatments of seed coating(B1),uniconazole powder for dry seed(B2),seed dressing with rhizobium(B3)and normal seed(B4)under slight drought stress(A1),middle drought stress(A2)and normal irrigation(A3).The results showed that drought stress treatments declined plant height,shortened the first internode length,increased stem diameter and decreased area of the third leaf from top,but had no significant effect on yield and quality,compared to normal water supply at seedling stage.Compared with nonseed treatment,seed treatments could significantly increase yield and quality of soybean,the values in B2 were the highest,followed by B1.Uniconazole powder for dry seed could significantly reduce plant height,shorten the first internode length,increase stem diameter and area of the third leaf from top,in addition,yield and quality were improved as well,under moderate drought stress.Seed,protein and fat yield in B2 were higher than those of B4 by 34.59%,34.85% and 28.70% under slight drought stress,while,under medium drought stress were 29.36%, 31.93% and 24.11%,respectively.