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ARS Home » Midwest Area » West Lafayette, Indiana » Crop Production and Pest Control Research » Research » Publications at this Location » Publication #201427
Title: Registration of 'CL0J173-6-2' and 'CL0J173-6-8' Soybean Germplasm Lines

Author
item LEROY, A - PURDUE UNIV.
item Abney, Thomas

Submitted to: Journal of Plant Registrations
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 3/3/2007
Publication Date: 9/1/2007
Citation: Leroy, A.R., Abney, T.S. 2007. Registration of 'CL0J173-6-2' and 'CL0J173-6-8' Soybeans. Journal of Plant Registrations. 1(2):98-99.

Interpretive Summary: Soybean germplasm with good yield potential combined with above average seed protein and resistance to Phytophthora rot and stem rot is important to soybean producers. There is a continuing need for improved soybean varieties for the non-GMO soybean market. To overcome crop losses from Phytophthora root rot, Purdue University and the USDA-ARS bred and released two new germplasm lines, CL0J173-6-2 and CL0J173-6-8, that have improved yield and average seed protein plus the Rps3 gene for race-specific resistance to Phytophthora root rot. These features are valuable to farmers and since the two germplasm lines were not developed by genetic engineering and are susceptible to glyphosate [N-(phosphonomethyl)glycine] herbicide, they are especially valuable for the non-GMO soybean market. This registration article describes the characteristics of CL0J173-6-2 and CL0J173-6-8 soybean germplasm lines.

Technical Abstract: The soybean germplasm lines CL0J173-6-2 and CL0J173-6-8 were developed without genetic engineering and released by Purdue University and the USDA-ARS at West Lafayette, IN. Both of these lines are F6 plant selections from CL0J173-6, an F3 plant selection from the cross of Kottman x Dwight soybean cultivars. These lines, CL0J173-6-2 and CL0J173-6-8, have good yield potential combined with above average seed protein and were developed for the non-GMO soybean market. Comparisons between the two-germplasm lines show that CL0J173-6-2 is taller and has more seed protein than CL0J173-6-8 while CL0J173-6-8 is the higher yielding line. Both germplasm lines are indeterminate growth types classified as early Group III maturity (relative maturity 3.0) with white flowers, light tawny pubescence, tan pods at maturity, seeds with black hila and dull seed coat. Hypocotyl inoculations with a series of races of Phytophthora sojae Kaufmann & Gerdeman demonstrated that both germplasm lines carry the Rps3 gene for race-specific resistance to Phytophthora root and stem rot.