Growth and Production of Determinate and Indeterminate Soybean (Glycine max L.) Influenced by Salinity Stress

Department of Agriculture, Diponegoro University 50275, Semarang, Central Java, Indonesia

^* Corresponding author: danangadrian@gmail.com

Abstract

This research was aimed to determine growth and production of two different growth types of soybean (Glycine max L.) influenced by salinity stress at various levels. This research used Factorial Design based on Completely Randomized Design 2x4 with ten replications. Two soybean growth types were used as the first factor (G1 = Determinate ; G2 = Indeterminate). The second factor was the various levels of soil salinity (S0 = 0.42 dS∙m-¹; S1 = 2.93 dS∙m-¹; S2 = 4.74 dS∙m-¹; S3 = 6.03 dS∙m-¹). Data were subjected to analysis of variance and tested further using Tukey’s Honestly Significant Differences (HSD). Parameters observed were plant height (cm), shoot weight (g), shoot dry weight (g), root length (cm), root weight (g), root dry weight (g), and total pod number. Results showed that indeterminate soybean is the best growth type to be planted in salinity stress based on plant height, shoot weight, shoot dry weight, root length, root weight, root dry weight, and total pod number, significantly different from determinate soybean. Salinity stress under 2.93 dS∙m-¹ had the better results in plant height, root weight, and root dry weight.