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United States Department of Agriculture

Agricultural Research Service

Title: Notice of Release of 'charleston Nemagreen', a Root-Knot Nematode Resistant, Cream-Type Southernpea with a Green Cotyledon Phenotype


Submitted to: USDA, Agricultural Research Service, Cultivar Release
Publication Type: Germplasm Release
Publication Acceptance Date: August 1, 2001
Publication Date: August 1, 2001
Citation: Fery, R.L., Thies, J.A. 2001. Notice of release of 'Charleston Nemagreen', a root-knot nematode resistant, cream-type southernpea with a green cotyledon phenotype. USDA, Agricultural Research Service, Washington D.C. 1 August 2001.

Interpretive Summary: This is a Germplasm Release, no Interpretive Summary Required.

Technical Abstract: The USDA has released the first green-cotyledon phenotype southernpea cultivar that is resistant to root-knot nematodes (Meloidogyne spp.). The new cultivar, named Charleston Nemagreen, was developed as a replacement for Bettergreen, a popular, cream-type, green cotyledon phenotype cultivar that is quite susceptible to root-knot nematodes. Charleston Nemagreen was developed using a pedigree breeding procedure that involved a single cross between Bettergreen and US-629 and repeated single plant selections. Charleston Nemagreen originated as a bulk of an F8 population grown in 1996. The new cultivar is quite similar in plant and maturity characteristics to Bettergreen. The results of four years replicated field testing at Charleston, SC, and three years of testing in the Regional Southernpea Cooperative Trials indicate that the yield potential of Charleston Nemagreen is similar to that of Bettergreen. Charleston Nemagreen is homozygous for the Rk gene that conditions resistance to the southern root nematode (M. incognita), the Javanese root-knot nematode (M. javanica), and the northern root-knot nematode (M. hapla). Charleston Nemagreen is well adapted for production throughout the southern U.S. Charleston Nemagreen is recommended for use by the frozen food industry and home gardeners.

Last Modified: 4/22/2015