Location: Sugarcane Field StationTitle: Registration of ‘CP 06-2042’ Sugarcane Author
Submitted to: Journal of Plant Registrations
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 1/3/2017
Publication Date: 4/27/2017
Citation: Davidson, W., Sandhu, H., McCord, P.H., Comstock, J.C., Edme, S.J., Zhao, D., Glaz, B.S., Sood, S.G., Glynn, N.C., Gilbert, R., Singh, M., Baltazar, M., McCorkle, K.M. 2017. Registration of ‘CP 06-2042’ sugarcane. Journal of Plant Registrations. 11:121-128. Interpretive Summary: Field data from three crops (plant cane and first- and second-ratoon crops) at multiple locations suggest CP 06-2042 yielded well in commercial sugarcane fields on muck and sand soils in Florida. On muck soils, CP 06-2042 had 26.1% higher cane yields, 1.8% lower commercial recoverable sucrose, and 22.8% higher sucrose yield than CP 89-2143 (a commercial check cultivar). On sand soils, cane yield, commercial recoverable sucrose, and sucrose yield of CP 06-2042 were 12.1, 2.9, and 13.1% higher, respectively, than those of CP 78-1628, a commercial check for sand soils. CP 06-2042 was released because of its high cane and sucrose yields on both muck and sand soils, and its acceptable levels of resistance to brown rust, leaf scald, sugarcane mosaic virus strain E (mosaic), and ratoon stunt. CP 06-2042 has some weaknesses, such as susceptible to orange rust and relatively poor freeze tolerance.
Technical Abstract: ‘CP 06-2042’ (Reg. No.CV-169; PI 675156) sugarcane (a complex hybrid of Saccharum spp.) was developed through cooperative research conducted by the USDA-ARS, the University of Florida, and the Florida Sugar Cane League, Inc., and released to growers for organic (muck) and mineral (sand) soils in Florida in September 2014. CP 06-2042 was selected from a cross of CP 96-1252 × 01 P 04 made at Canal Point, FL in December 2001. The female parent, CP 96-1252, is a commercial cultivar. The male parent is unknown as it is one of 19 sugarcane cultivars in the polycross. Cane yield of CP 06-2042 on muck soils, averaged across the 18 harvests through three crop cycles (plant-cane, first-ratoon, and second-ratoon), was 26.1 % higher (P < 0.1) than that of CP 89-2143, a commercial check for muck soils. Although CP 06-2042 had 1.8 % lower commercial recoverable sucrose (CRS) than CP 89-2143, high cane yield resulted in and 22.8 % higher (P < 0.1) sucrose yield than CP 89-2143. Averaged across nine harvests through three crop cycles on sand soils, CP 06-2042 had 12.1% (P < 0.1) higher cane yield, 2.9% higher CRS, and 13.1% (P < 0.1) higher sucrose yield than CP 78-1628, a commercial check for sand soils. CP 06-2042 was released because of its high cane and sucrose yields on both muck and sand soils, and its acceptable levels of resistance to brown rust (caused by Puccinia melanocephala H. & P. Sydow), leaf scald (caused by Xanthomonas albilineans Ashby, Dowson), Sugarcane mosaic virus strain E (mosaic), and ratoon stunt (caused by Clavibacter xyli subsp. Xyli Davis). CP 06-2042 was susceptible to orange rust (caused by Puccinia kuehnii E.J. Butler) and it had poor freeze tolerance.