Establishment of screening method for salt tolerant soybean at emergence stage and screening of tolerant germplasm

Guan, Rongxia; Chang, Ru-Zhen; Liu, Xiexiang; Qiu, Lijuan

doi:10.3724/sp.j.1006.2020.94062

Cited by 6 publications

(2 citation statements)

References 14 publications

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“…In order to overcome the spatial heterogeneity in saline field trials, Liu et al (2020) developed a method using vermiculite as a culture substrate treated with a salt solution after soybean sowing, whereby soybeans grown under 150 mM NaCl showed a different salt tolerance. The salt tolerance index (SI) calculated using the relative growth of seedlings was found to be significantly related to salt tolerance and was used for the identification of salt-tolerant soybean accessions [ 27 ].…”

Section: Identification Of Salt-tolerant Accessions In Soybeanmentioning

confidence: 99%

Salt Tolerance in Soybeans: Focus on Screening Methods and Genetics

Guan,

Guo,

et al. 2023

Plants

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Salinity greatly affects the production of soybeans in arid and semi-arid lands around the world. The responses of soybeans to salt stress at germination, emergence, and other seedling stages have been evaluated in multitudes of studies over the past decades. Considerable salt-tolerant accessions have been identified. The association between salt tolerance responses during early and later growth stages may not be as significant as expected. Genetic analysis has confirmed that salt tolerance is distinctly tied to specific soybean developmental stages. Our understanding of salt tolerance mechanisms in soybeans is increasing due to the identification of key salt tolerance genes. In this review, we focus on the methods of soybean salt tolerance screening, progress in forward genetics, potential mechanisms involved in salt tolerance, and the importance of translating laboratory findings into field experiments via marker-assisted pyramiding or genetic engineering approaches, and ultimately developing salt-tolerant soybean varieties that produce high and stable yields. Progress has been made in the past decades, and new technologies will help mine novel salt tolerance genes and translate the mechanism of salt tolerance into new varieties via effective routes.

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Section: Identification Of Salt-tolerant Accessions In Soybeanmentioning

confidence: 99%

Salt Tolerance in Soybeans: Focus on Screening Methods and Genetics

Guan,

Guo,

et al. 2023

Plants

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“…Zhang et al (2018) conducted salt-alkali tolerance assessments of 161 soybean resources in the Huang-Huai-Hai region during the seedling and field stages and identified 12 soybean varieties suitable for cultivation in mildly saline-alkali areas of the Yellow River Delta. Moreover, researchers at various institutions, including the Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Yan'an University, and Shandong Crop Germplasm Resource Center, screened the salt-tolerant soybean resources but on a smaller scale (Tuyen et al 2010;Pu et al 2018;Liu et al 2020).…”

Section: Introductionmentioning

confidence: 99%

Comprehensive assessment of salt-alkali tolerance of different soybean varieties at the maturation stage

Hu,

Sun,

Cui

et al. 2024

EJFA

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Soil salinization is a significant global challenge impacting food security and arable land safety. Biological amelioration for the development and utilization of salt-alkali land has gained attention in recent years but the breeding and selection of salt-alkali-tolerant crop varieties remain a challenge. Cultivated soybeans are moderately salt-tolerant crops; however, a precise threshold for salt-alkali conditions has not been determined and varies by genotype. Therefore, this study evaluated the salt-alkali tolerance of 15 different soybean varieties using correlation, principal component, membership function, and cluster analyses. The average soybean indices decreased with increasing salt-alkali stress concentrations. Under severe salt-alkali stress, the coefficients of variation for grain yield and biomass were significantly higher than those under mild salt-alkali stress. Plant height and node number were significantly positively correlated, whereas bottom pod height was significantly negatively correlated with branch number, effective pod number, and grain number per plant. Node and grain numbers per plant were significantly positively correlated. Branch number, effective pod number, grain number per plant, and hundred-grain weight were significantly and positively correlated. Effective pod number was significantly positively correlated with grain number per plant, biomass, and yield. Grain number per plant exhibited a significant negative correlation with hundred-grain weight. Biomass and yield were significantly positively correlated. The salt-alkali tolerance of 15 soybean varieties ranged from strong weak as follows: Cangdou 1438, 0734, 1426, 1418, 1453, 1327, 1846, 1412, 1817, 1301, 1821, 1819, 1815, 1814, and 1850. Salt-alkali-sensitive and salt-alkali-tolerant varieties were successfully identified.

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