Morphological and Physiological Performances of 18 Soybean Varieties Exposed to Salinity Stress

Abstract

Increasing soybean production can be done by growing the crops in marginal soil, such as saline soil. Therefore, saline-tolerant genotypes are important to support the cultivation. The objective of the experiment was to evaluate the performance of 18 soybean varieties grown under salinity stress. The experiment was done from May to July 2021 at the greenhouse of the Department of Agronomy, Faculty of Agriculture, Bengkulu University, about 10 m above sea level. Soybean seedlings were grown in 10 cm diameter plastic pots fertilized with AB-mix solutions supplemented with 0 or 6 dSm-1 NaCl for 15 days. The growth and stress-tolerant index of the seedlings were measured. The results showed that soybean variety had different growth as responses to salinity. Moreover, salinity stress imposed at 6 dSm-1 NaCl significantly reduced crops growth and promoted leaf senescence. We found that 18 soybeans varieties were classified as salinity tolerant at 6 dSm-1.
 Keywords: saline, soybean varieties, tolerant

Damage Intensity of Pod Borer Attack on Seven Soybean Cultivars on Mahogany and Pine Agroforestry

“…The Devon-1 cultivar has a potential yield of about 3.09 t ha -1 , a weight of around 14.3 g 100 grains -1 , it is vulnerable to attacks by grey leafworm pests (S. litura), resistant to leaf rust disease, moderately resistant to pod-sucking pests (R. linearis), and relatively resistant to lodging. Dena-1 and Devon-1 are cultivars tolerant to salinity stress [8]. This study is to evaluate the damage intensity of pod borer attack and how it affects the yields on seven soybeans cultivar in a mahogany and pine agroforestry.…”