Variation of Saponin Content in Korean Native Soybean Landraces Reintroduced from USA to Korea

Jang, Eun-Kyu; Piao, Xiangfan; Hwang, Tae-Young; Kim, Sun-Lim; Chung, Gyuhwa; Tsukamoto, Chigen; Choi, Yu-Mi; Lee, Myung Chul; Lee, Jeong-Ran; Kim, Hong-Sig

doi:10.7740/kjcs.2012.57.3.286

Cited by 2 publications

(1 citation statement)

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“…Important variations in soyasaponin B have been reported between cultivars and genotypes; a 2.6-fold variation being reported among 293 Korean soybean landraces. − Environmental factors may also have effects on soybean soyasaponin B concentration as demonstrated by the variations reported in soyasaponins or their precursors (i.e., soyasapogenols), for given cultivars grown in different locations and years. , For example, an average of 36% variation in soyasapogenol B was reported for 10 soybean cultivars grown across four locations . Specific environmental factors and agronomic practices have been reported to impact saponin concentration of a range of plants, although research on this aspect remains limited for soybean .…”

Section: Introductionmentioning

confidence: 99%

Crop Management, Genotypes, and Environmental Factors Affect Soyasaponin B Concentration in Soybean

Séguin

Chennupati

Tremblay

et al. 2014

J. Agric. Food Chem.

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Soybean [Glycine max (L.) Merr.] seeds contain soyasaponin B, which has putative health benefits. Studies were conducted in multiple environments in Quebec, Canada to determine the effects of genotypes, environments, and seeding dates on soyasaponin B concentration in mature seeds. A growth chamber study was also conducted to determine the impact of high air temperature imposed at specific growth development stages on soyasaponin B in soybeans. Concentrations of individual and total soyasaponin B were determined using high-performance liquid chromatography. Genotype and environment main effects were the main determinants of soyasaponin B concentration in soybean, genotype × environment interactions accounting for less than 5% of the variation for all soyasaponin. Ranking of 20 early maturing soybean genotypes was thus relatively consistent across four environments, total concentration varying between 2.31 and 6.59 μmol g(-1). Seeding date consistently impacted soyasaponin B concentrations, early seeding date resulting in the highest concentrations. There was an 11% difference in total soyasaponin B concentration of soybeans seeded in mid-May compared to that in late-June. The response to high air temperature was complex and cultivar specific. High temperature stress restricted to the seed filling stages increased total soyasaponin B concentration in one cultivar by 28% when compared to that in control nonstressed plants; however, in another cultivar high temperature applied during all growth stages reduced total concentration by 27%. Results from the present study thus demonstrate that environmental factors and crop management both impact soyasaponin B concentration in soybeans.

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