ARS | Publication request: Registration of ‘CPCL 95-2287’ Sugarcane

Submitted to: Journal of Plant Registrations
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: August 17, 2012
Publication Date: December 10, 2012
Citation: Davidson, R., Milligan, S.B., Gilbert, R.A., Glynn, N.C., Zhao, D., Comstock, J.C., Glaz, B.S., Edme, S.J., Hu, C., Holder, D., Sood, S.G. 2012. Registration of ‘CPCL 95-2287’ Sugarcane. Journal of Plant Registrations. doi:10.3198/jpr2012.03.0189crc.

Interpretive Summary: Sugarcane is grown on organic (muck) and sand soils in a region near Lake Okeechobee in south Florida. This region contributes about 25% of U.S. domestic sugar production. New cultivars are needed that yield well on both soil types and have acceptable profiles of disease resistance, but only rarely are such cultivars identified. Experimental data of CPCL 95-2287 suggest that it will yield well in commercial sugarcane fields on muck soils. On muck soils, the three-crop mean cane yield of CPCL 95-2287 was 30.0 and 4.3% higher than the mean cane yields of CP 72-2086 and CP 89-2143, respectively. CP 72-2086 and CP 89-2143 were the reference cultivars against which yields of CPCL 95-2287 were compared. The three-year mean values of sucrose content of CP 72-2086 and CPCL 95-2287 were similar, but the sucrose content of CP 89-2143 was 2.4% higher than that of CPCL 95-2287. Its high cane yield and moderate sucrose content resulted in a sucrose per hectare yield and an economic index on muck soils that were similar with those of CP 89-2143 and both were higher for CPCL 95-2287 than for CP 72-2086. Cultivar resistance and tolerance are the major sources of sugarcane disease control in Florida, but they are challenging to identify and quantify, because plants are growing and therefore exposed to disease pressures all year. CPCL 95-2287 has shown adequate resistance for commercial production in Florida to smut, leaf scald, brown rust, orange rust, sugarcane mosaic virus, and ratoon stunting. CPCL 95-2287 is susceptible to sugarcane yellow leaf virus as are almost all sugarcane cultivars in Florida. The commercial release of CPCL 95-2287 makes available to Florida growers with muck soils a cultivar that maintains high yields in the presence of diseases, and therefore should help to continue providing the U.S. an affordable and stable sugar supply. Additionally, CPCL 95-2287 may be tested by farmers in Central America, who grow mostly Canal Point (CP) cultivars. CPCL 95-2287 was developed by a discontinued sugarcane breeding program of the United States Sugar Corporation in Clewiston, FL. It was donated to the USDA-ARS in 2005. The USDA-ARS, the University of Florida-Institute of Food and Agricultural Sciences, and the Florida Sugar Cane League, Inc., cooperatively conduct a sugarcane cultivar development program and after 5 years of testing in this program, CPCL 95-2287 was released in September 2012.

Technical Abstract: Development of ‘CPCL 95-2287’ sugarcane (a complex hybrid of Saccharum spp.) is the latest in a series of commercial sugarcane cultivar releases originating from the United States Sugar Corporation (USSC) and completed by the cooperative Canal Point sugarcane breeding and selection program which included the USDA-ARS, the University of Florida, and the Florida Sugar Cane League, Inc. CPCL 95-2287, which was released in Florida on 20 Sept. 2011, was selected from a cross of genotype CL 78-1120 x CL 78-1600 made at Clewiston, FL on 27 Dec. 1994. The female and male parents, CL 78-1120 and CL 78-1600 respectively, were proprietary genotypes of USSC. CPCL 95-2287 was released because of its high cane yield, moderate levels of commercial recoverable sucrose on organic (muck) soils, and its resistance to brown rust (caused by Puccinia melanocephala H. & P. Sydow), smut (caused by Ustilago scitaminea H. & P. Sydow), Sugarcane mosaic virus strain E (mosaic), leaf scald (caused by Xanthomonas albilineans Ashby, Dowson), and its moderate resistance to orange rust (caused by Puccinia kuehnii E.J. Butler). All of these diseases are of economic importance to sugarcane production in Florida.