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Registration of ‘CP 04-1935’ Sugarcane

Edme, Serge J
Journal of Plant Registrations 2013 v.7 pp. 288
Bipolaris sacchari, Leifsonia xyli subsp. xyli, Puccinia melanocephala, Saccharum, Sugarcane mosaic virus, Ustilago scitaminea, Xanthomonas albilineans, crop yield, cultivars, disease resistance, foliar diseases, frost resistance, fungi, genotype, germplasm releases, industry, orange rust, pathogens, plant breeding, profitability, sand, sandy soils, smut diseases, sucrose, sugarcane, Florida
CP 04-1935 is sugarcane variety that was developed by a cooperative research involving the USDA-ARS, the University of Florida, and the Florida Sugar Cane League, Inc. It was released to growers in Florida on 20 Sep. 2011. CP 04-1935 was selected from the cross between CP 94-2059 and CP 84-1322 made at Canal Point, FL on 8 Dec. 1998. In the final stage of selection (Stage 4), CP 04-1935 was tested for yield performance at two locations with sand soils and compared with 15 other genotypes across three crop-years or for freeze tolerance in North Florida for two crop-years. CP 04-1935 performed better than the reference cultivar for sand (CP 78-1628) in the tests, producing 11% higher cane yield, 3.5% higher sucrose content, and 14.5% higher sucrose yield. CP 04-1935 is resistant to the rust pathogens (brown rust caused by Puccinia melanocephala H. & P. Sydow and orange rust caused by Puccinia kuehnii E.J. Butler), to the Sugarcane mosaic virus strain E (mosaic) and to eyespot(caused by the fungus Bipolaris sacchari); it is moderately resistant to leaf scald (caused by Xanthomonas albilineans Ashby, Dowson), to smut (caused by Ustilago scitaminea H. & P. Sydow), and to ratoon stunt (caused by Leifsonia xyli subsp. xyli Evtsuhenko et al.), but it is susceptible to the yellow leaf virus. CP 04-1935 performed significantly less under freeze conditions than CP 89-2143, which is the industry standard for acceptable freeze tolerance in Florida. With its profitability predicted to be 19% higher than that of CP 78-1628 combined with a good disease profile, CP 04-1935 was recommended for planting on sand soils in Florida.