GROWTH AND PHYSIOLOGICAL CHARACTERISTICS OF SOYBEAN GENOTYPES (Glycine max L.) TOWARD SALINITY STRESS

Abstract

The research aimed to determine the tolerance limit of soybean genotypes toward salinity stress, plant growth and physiological characteristics. It was conducted in green house, from April to August 2013. The study involved two activities. The first activity for evaluating a salinity stress, consisted of four levels of soil salinity (EC): 0.9; 4; 7; 10 dS m -1 and eleven genotypes. The second one to obtain information about changes in physiological and morphological characteristics of soybean affected by salinity stress. The second activity consisted of two soil salinity levels (EC): 1.52 dS m -1 and 8.58 dS m -1. The results showed that at salinity 10 dS m -1 , all varieties/genotypes were not able to survive until the age of 43 days after sowing (DAS). At salinity 4 dS m -1 , total plant dry weight of most genotypes soybean decreased by 48.14%, while the salinity of 7 dS m -1 total plant dry weight of all soybean decreased by 64.89%. Concentration of K and Na in soybean leaves were higher than those in soybean root tissue. The content of K and Na in leaves and roots of most soybean genotypes increased as soil salinity increased from 1.52 to 8.58 dS m -1 , except for genotype G11.

Effect of gypsum and cow manure on yield, proline content, and K/Na ratio of soybean genotypes under saline conditions

“…In contrast, low K/Na ratios indicates high sodium concentration in the leaf blade. This result was slightly different from the results of Aini et al (2014) that the concentration of K in the leaves in susceptible varieties to saline conditions (Willis and Tanggamus varieties), was lower than that of salinity tolerant genotypes (IAC,100/Bur// Malabar and Argopuro//IAC,100). …”

“…The research was carried out from June to September 2014. The research used a split plot design, the main plot was a soybean genotypes which consisted of two saline susceptible varieties (G1 = Wilis and G2 = Tanggamus) and two saline tolerant genotypes (G3 = genotype IAC,100/Bur//Malabar and G4 = genotype Argopuro//IAC,100) (Aini et al, 2014); the sub plot was ameliorant application consisting of A0 = without ameliorant; A1 = cow manure (20 t/ha); and A2 = gypsum (5 t/ha).…”

Growth Characteristics and Fruit Quality of Chili Pepper under Higher Electrical Conductivity of Nutrient Solution Induced by Various Salts

“…Nevertheless, NaCl and K₂SO₄ treated plants had the longer and shorter roots than control plants. Decrease in vegetative growth traits of many agricultural crops has been reported due to NaCl salinity in soil or in nutrient solution culture (Aini, Syekhfani, Yamika, Dyah P., & Setiawan, 2014;Grewal, 2010;Martínez-Ballesta, Martínez, & Carvajal, 2004). The reduction in photosynthesis rates of plants due to reduced leaf area, less chlorophyll content of leaves, impaired water conductivity and water balance of tissues and impaired photo-assimilation and protein biosynthesis have been reported under NaCl salinity conditions (Choudhury, Rivero, Blumwald, & Mittler, 2017;Marschner, 2012;Shabala et al, 2010).…”

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

“…Response of soybean genotypes or varieties to salinity stress is varies. Research results of Aini et al (2014) the content of Na in leaves and roots eleven genotypes differently in stress salinity. In a similar case, the Taufiq et al (2019) result's, identify of 202 soybean germplasm collections of Balitkabi to salinity stress discovered 52% intolerant, 36% tolerant at 4.7-8.4 dSm -1 and others tolerant at salinity 8.8-15.4 dSm -1 .…”