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Title: Registration of G07-6012 and G07-6029 soybean germplasm which derive 50% pedigree from wild soybean

item ABDEL-HALEEM, HUSSEIN - University Of Georgia
item BOERMA, H. ROGER - University Of Georgia
item Carter Jr, Thomas
item WOOD, DALE - University Of Georgia
item LI, ZENGLU - University Of Georgia

Submitted to: Journal of Plant Registrations
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 12/10/2014
Publication Date: 4/10/2015
Citation: Abdel-Haleem, H., Boerma, H., Carter Jr, T.E., Wood, D., Li, Z. 2015. Registration of G07-6012 and G07-6029 soybean germplasm which derive 50% pedigree from wild soybean. Journal of Plant Registrations. 9:222-226.

Interpretive Summary: The wild soybean remains a relatively untapped source of diversity in soybean breeding. The primary barrier to its effective use is the strikingly poor appearance and performance of progeny, when wild soybean is hybridized with cultivated soybean. Backcrossing, a traditional breeding method for countering this problem and introducing diversity from unadapted genetic sources, has not been particularly effective for the wild soybean. As an alternative, we adopted a novel ‘mega population’ bulk- breeding approach in which individual F3 plants are developed and screened for upright growth habit from a bi-parental domesticated x wild soybean hybridization. This approach was tested and a series high-yielding upright progeny we developed. These germplasms described here are the first materials released to the public from this effort. We conclude our mega-population approach offers an exciting and effective new means of introducing diversity from wild soybean into the soybean breeding pool. This approach provides a new means to systematically tap the diversity in wild soybean for agriculture and the consumer.

Technical Abstract: Two soybean germplasm lines, G07-6012 and G07-6029 were developed and released by the Univ. of Georgia Agricultural Experiment Stations. Both G07-6012 and G07-6029 are agronomic F4-derived lines from the hybridization of cultivar ‘N7103’ x Plant Introduction (PI) 366122, a wild soybean accession [G. soja] from Japan. G07-6029 is an early maturity group VII line, which yielded 2,253 kg ha-1 or 88% of its elite parent N7103, and 78 and 84% of the cultivars ‘NC-Roy’ and ‘AGS 758 RR’, respectively, over 15 replicated trials in the southern USA. G07-6012 is a late maturity group VII line, which yielded 88% of N7103 and 70, 76, 80 and 82% of the check cultivars, ‘N7002’, ‘Woodruff’, ‘NC-Raleigh’ and ‘N8001’, respectively, in these same trials. Both G07-6029 and G07-6012 have seed quality, shattering and lodging resistance scores which are similar to that of the check cultivars, both G07-6012 and G07-6029 have smaller seed than their G. max parent, N7103 (6.5g for G07-6029 and 5.0g G07-6012 compared to 8.0g for N7013).These two germplasm releases are the first in the southern USA to be derived a single cross involving wild soybean. Because of their diverse pedigree (50% from G. soja) and positive agronomic performance, G07-6012 and G07-6029 are released as valuable genetic resources for applied soybean breeding programs.