Soybean [Glycine max (L.) Merrill]: Importance as A Crop and Pedigree Reconstruction of Korean Varieties

Abstract

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.Plant Breed. Biotech. 2015 (September) is one of the most important crops in the world and in Korea as well. Since the official start of soybean breeding program in Korea at which a landrace 'Jangdanbaekmok' was first released to promote cultivation in 1913, approximately one century has elapsed. Currently, a total of 178 soybean varieties are registered at two representative Korean national institutes, the RDA-Genebank Information Center (http://www.genebank.go.kr) and the Korea Seed & Variety Service (http://www.seed.go.kr). Of these, 155 varieties (87.1%) have been developed through hybridization-based breeding technologies, of which most cultivars (133 varieties, 85.8%) have been released in the last twenty five years. In this review, we attempted to integrate all the information for individual cultivars and to rebuild a breeding pedigree including the entirety of registered Korean soybean varieties. The analysis has resulted in a total of four pedigrees involving 168 cultivars (94.4% out of 178 cultivars), which form the broadest network of pedigrees. Each of pedigrees highlights different key varieties within the context of progenitor networks derived from crossing of various elite parental lines as follows; pedigree I-'Kwangkyo', 'Hwangkeumkong', 'Paldalkong' and 'Sinpaldalkong2', pedigree II-'Baegunkong', 'Jangyeobkong' and 'Keunolkong', pedigree III-'Danyeob', 'Pangsa' and 'Eunhakong'. These pedigrees also reveal purpose (i.e., desirable traits)-driven development of characteristic soybean varieties during the past century of breeding history in Korea. We expect that the pedigree reconstructed in this study will provide breeders with information useful to design breeding schema and guidance towards the genomics-assisted soybean improvement in the future.

Silicon Confers Soybean Resistance to Salinity Stress Through Regulation of Reactive Oxygen and Reactive Nitrogen Species

“…We used soybean cv. Daewon, which is widely cultivated in South Korea due to its bigger seed size and higher seed weight relative to other soybean cultivars (Lee et al, 2015). Seeds of cv.…”

Association of New Mutant Allele, w4‐nw, at W4 Locus with Near‐White Flower Color in Soybean

“…An EMS‐induced mutant line with near‐white flowers, PE1033, was isolated from a population of soybean cultivar Pungsannamul. The cultivar Pungsannamul (Lee et al, 2015) and Clark isolines (L68‐1774 and L70‐4422 obtained from USDA–Germplasm Resource Information Network) were used in this study (Table 1). A total of 104 plants of the F 2 population derived from a cross between PE1033 and Pungsannamul were used for segregation analysis.…”

Genetic and Environmental Variation of First Pod Height in Soybean [Glycine max (L.) Merr.]

“…Four genotypes, 'Uram' (Ko et al 2016), 'Seonpung' (Lee et al 2015), 'Tawon' (Lee et al 2015), and 'Milyang 255' (Somyeong/Hannam) were selected to evaluate variation of FPH in different seeding date and planting distance. Uram, Seonpung, and Tawon are commercial cultivars whereas Milyang 255 was a breeding line.…”

“…Four soybean genotypes, a cultivar Uram and 'Chamol' (Lee et al 2015), a breeding line 'Milyang 257' (Holl/Shingi) and a land race 'IT143195', were used to develop the segregating populations. The FPH of Uram, Chamol, Milyang 257, and IT143195 was 19, 10, 25, and 30 cm, respectively.…”