MORPHO-PHYSIOLOGICAL FEATURES AND YIELD ATTRIBUTES OF SOYBEAN GENOTYPES IN ACID SOIL

Abstract

An experiment was conducted at the experimental field of the Department of Crop Botany and Tea Production Technology, Sylhet Agricultural University, Sylhet, during the period from 10 April to 25 August 2013 to evaluate the morpho-physiological attributes and yield performance of nine advanced genotypes and five varieties of soybean in acidic soil. The tested genotypes and varieties were Binasoybean-1, Binasoybean-2, Shohag, BARI Soybean-5, BARI Soybean-6, SBM-9, SBM-15, SBM-17, SBM-18, SBM-20, SBM-22, SBM-73, SBM-78 and BAU-S/70 used as experimental treatments. The experiment was laid out in a Randomized Complete Block Design (RCBD) with three replications. The result revealed that there was significant differences in plant height, number of branches plant -1 , number of leaves plant -1 , days to 50% flowering, days to maturity, root dry weight (g), stem dry weight (g), leaf dry weight (g), total dry matter (TDM), absolute growth rate (AGR), relative growth rate (RGR), crop growth rate (CGR), pod length, number of pods plant -1 , number of seeds pod -1 , number of -1 seeds plant , 100-seed weight, seed yield plant -1 -1 and yield ha among the soybean genotypes at all growth stages. Among the genotypes, SBM-78 showed the highest TDM accumulation, AGR, CGR, 100-seed weight while BARI Soybean-5 had the highest number of branches plant -1 , leaves number plant -1 , stem dry weight, leaf dry weight, pod -1 length, seeds pod -1 , seeds plant and economic yield in acid soil. Both genotypes showed better growth performance and produced the highest grain yield due to superiority of yield attributing characters in acid soils than the other genotypes. Therefore, BARI Soybean-5 and SBM-78 are possibly to be preferred as acid soil tolerable genotypes than others.