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REGISTRATIONS OF CULTIVARS

Registration of ‘Georgia-02C’ Peanut

Dep. of Crop and Soil Sci., Univ. of Georgia, Coastal Plain Exp. Stn., Tifton, GA 31793-0748

^* Corresponding author (wdbranch{at}tifton.uga.edu)

‘Georgia-02C’ (Reg. no. CV-76, PI 632380) is a new high-oleic runner-type peanut (Arachis hypogaea L. subsp. hypogaea var. hypogaea) cultivar that was released by the Georgia Agricultural Experiment Stations in 2002. It was developed at the University of Georgia, Coastal Plain Experiment Station, Tifton, GA.

Georgia-02C originated from a cross made in 1993 between ‘Southern Runner’ (Gorbet et al., 1987) and a Georgia high-oleic selection derived by -irradiation induced mutation from seed of ‘Georgia Runner’ (Branch, 1991). Pedigree selection was practiced within the F₂, F₃, and F₄ cross populations for high oleic (O) and low linoleic (L) fatty acid O/L ratios, desirable pod shape, seed size, testa color, growth habit, maturity, high yield, and grade characteristics. Since spotted wilt (caused by Tomato spotted wilt virus, TSWV) was naturally occurring and cylindrocladium black rot {CBR, caused by the soilborne pathogen Cylindrocladium parasiticum Crous, Wingfield, and Alfenas, teleomorph: Calonectria ilicicola Boedijin and Reitsma [= C. crotalariae (C.A. Loos) D.K. Bell & Sobers, teleomorph: Calonectria crotalariae (C.A. Loos) D.K. Bell & Sobers]} was prevalent in the disease nurseries during these early segregating generations, individual plants were selected for both TSWV and CBR resistance, respectively. Performance testing was begun in the F_4:6 generation with the advanced pure breeding line GA 982508.

During two consecutive years (2000 and 2001) at a test site known to be heavily infested with CBR, Georgia-02C was found to have comparable or better CBR resistance as ‘NC 12C’ (Isleib et al., 1997), ‘Perry’ (Isleib et al., 2003), ‘NC 8C’ (Wynne and Beute, 1983), and the germplasm line NC 3033 (Beute et al., 1976). During these same 2 yr, Georgia-02C was also found to have comparable or better TSWV resistance, pod yield, total sound mature kernel (TSMK) grade, and dollar value return per hectare, as the multiple-pest-resistant cultivar ‘Georgia-01R’ (Branch, 2002) and the TSWV-resistant runner-type cultivar ‘Georgia Green’ (Branch, 1996).

Georgia-02C is unique from other high-oleic runner-type peanut cultivars in having a combination of higher percentage of jumbo runner seed size (riding a 8.33- by 19.05-mm slotted screen), higher TSMK percentage, tan testa color, spreading runner growth habit, medium maturity, and resistance to both TSWV and CBR. Georgia-02C has a similar percentage of oleic, but significantly (P 0.05) lower percentage of linoleic fatty acid content and higher O/L ratio (32:1 vs. 24:1) for longer shelf-life and better nutrition as compared with AgraTech 201, another high-oleic runner market type cultivar. However, it is not significantly different from AT 201 in 100-seed weight, blanchability, protein content, oil content, and roasted peanut flavor scores.

U.S. Plant Variety Protection is pending for Georgia-02C. Breeder seed of Georgia-02C will be maintained by the University of Georgia, Coastal Plain Experiment Station at Tifton. Foundation seed will be available from the Georgia Seed Development Commission, 2420 S. Milledge Avenue, Athens, GA 30605.

NOTES

Registration by CSSA.

Accepted for publication February 28, 2003.

REFERENCES

• Beute, M.K., J.C. Wynne, and D.A. Emery. 1976. Registration of NC 3033 peanut germplasm (Reg. No. GP 9). Crop Sci. 16:887.[Free Full Text]
• Branch, W.D. 1991. Registration of ‘Georgia Runner’ peanut. Crop Sci. 31:485.[Free Full Text]
• Branch, W.D. 1996. Registration of ‘Georgia Green’ peanut. Crop Sci. 36:806.[Free Full Text]
• Branch, W.D. 2002. Registration of ‘Georgia-01R’ peanut. Crop Sci. 42:1750–1751.[Free Full Text]
• Gorbet, D.W., A.J. Norden, F.M. Shokes, and D.A. Knauft. 1987. Registration of ‘Southern Runner’ peanut. Crop Sci. 27:817.[Free Full Text]
• Isleib, T.G., P.W. Rice, J.E. Bailey, R.W. Mozingo, and H.E. Pattee. 1997. Registration of ‘NC 12C’ peanut. Crop Sci. 37:1976.[Free Full Text]
• Isleib, T.G., P.W. Rice, R.W. Mozingo, II, J.E. Bailey, R.W. Mozingo, and H.E. Pattee. 2003. Registration of ‘Perry’ peanut. Crop Sci. 43:739–740.[Free Full Text]
• Wynne, J.C., and M.K. Beute. 1983. Registration of NC 8C peanut (Reg. No. 27). Crop Sci. 23:183–184.[Free Full Text]

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