Komponen Hasil dan Karakter Morfologi Penentu Hasil Kedelai pada Lahan Kering Tegalan

Abstract
Correlation and path analysis between yield components and grain yield may be useful to provide the basis for planning more efficient in the selection program to obtain high yielding soybean genotype. The objectives of the experiment were to investigate the most responsible yield components to grain yield of morphologically diverse soybean varieties. Fifteen soybean varieties were evaluated on dry land in Grobogan, Central Java during the late rainy season of 2019. The experiment was arranged in randomized block design with four replications. Each of the genotypes was grown in five rows of five meters long. Plant spacing was 40cm x 20 cm with two seeds per hill. Results showed that among the yield components, days to maturity, number of productive nodes, number of pods per plant and seed size were positively and significantly correlated with grain yield (r= 0.501, 0.533, 0.404 and 0.422). Except the number of productive nodes, the direct effect of days to maturity, number of pods per plant and seed size to grain yield as indicated by path coefficient were the highest, each was 0.711, 0.503 and 0.520 respectively. The direct effect of number of productive nodes and other yield component were small or negative. Base on both analysis soybean genotypes with high grain yield showed have earlier maturity (35 Pods/plant) and large seed size (>15 g/100 grain). Therefore, days to maturity, pod per plant, and seed size can be suggested for selection criteria in selecting high yielding soybean genotypes on dry land.