LAUSR

Background: In soybean yellow seed coat is preferred in the market, however, colored ones are currently gaining attention because of their medicinal and nutritive values; besides. Hence it is essential to breed varieties with desired seed coat colour. Methods: Twelve genotypes with six each having yellow and black seed coats were screened with fourteen primers linked to seed coat colour governing loci. Result: Out of them twelve primers showed polymorphism. Monomorphism was observed with both T loci specific and two of the three R loci specific primers. However I locus specific primers i.e. SM303, SM305 and TR showed polymorphism shared by their seed coat color. SM303 amplified a 180 bp sized band in yellow seed coated genotypes and a 130 bp band in black seed coated genotypes. SM305 amplified dual bands with a 200bp band being monomorphic and an additional band (192-216 bp range) present in only yellow seed coated genotypes, of which a 208 bp band was shared by four yellow seed coated genotypes. Cold induced seed coat discoloration specific TR primer generated bands of different size ranges in yellow seed coated (336-344 bp) and black seed coated genotypes (300-320), of which a 340 bp band was shared by four yellow seed coated genotypes.