Reference Report for IND81029719
| Title: | Soybean, seed protein electrophoresis profiles from 15 Asian countries or regions: hyoptheses on paths of dissemination of soybeans from china. |
| Authors: | Kaizuma, N., Hymowitz, T. |
| Source: | Econ. Bot. 1981, 35(1):10-23 |
| Abstract: | Soybean [Glycine max (L.) Merr.] seed protein extracts from 1,603 accessions obtained from 15 Asian countries or regions (not including Japan) were analyzed for the presence of alleles of 2 proteins. Three alleles of the Kunitz. trypsin inhibitor orSBTI-A 2 designated asTi a,Ti b andTi c are electrophoretically distinguishable from one another by their different Rf values of 0.79, 0.75 and 0.83, respectively. The Sp1 seed protein or beta-amylase has 2 alleles designated Sp1a and Sp1b which are electrophoretically distinguishable from one another by their Rf values 0.36 and 0.42. About 94 percent of the soybean accessions had the Ti a allele. Two accessions from Korea, P.I. 157440 and P.I. 196168, do not have theSBTI-A2 protein(ti). Two accessions, one from Pakistan and the other from Korea, were identified as having the Ti c allele. Only the Korean and central Indian soybean populations have a high frequency for the Ti b allele. Within Korea, the soybeans from those districts that lie closest to Japan have a high frequency for the Ti b allele whereas the soybeans from those districts that lie closest to China have a low frequency for the Ti b allele. The Ti b allele is not present in soybeans from the Philippines, Vietnam, Thailand, Malaysia, Burma, Nepal, Pakistan, and Afghanistan. Only 1 accession each from Taiwan and Indonesia have the Ti b allele. The soybeans from Asia (including Japan) were divided into 3 gene centers— primary, secondary, and tertiary—containing 7 germ plasm pools. Paths of dissemination of the soybean from China to the rest of Asia were developed based upon a combination of electrophoretic data and available historical, agronomic, and biogeographical literature. |
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