Registration of ‘CP 04-1844’ Sugarcane
2013
Glaz, Barry S
‘CP 04-1844’ 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 was released to growers in Florida on 20 Sept. 2011. CP 04-1844 was selected from the cross X01-0336 (‘CP 97-1989’ X ‘CP 84-1591’) made at Canal Point, FL on 5 Dec. 2001. The female parent, CP 97-1989, was a high tonnage cultivar with low sucrose content released for sand soils in Florida in 2004, but was not grown extensively because it became susceptible to brown rust (caused by Puccinia melanocephala H. & P. Sydow) soon after its release. The male parent, CP 84-1591, was also a high tonnage cultivar with low sucrose content and was released for sand soils in Florida in 1994. It peaked at about 1% of the commercial acreage in Florida. CP 04-1844 was tested in the final selection stage (Stage 4) on sand soils in Florida and was released for because of its high cane and sucrose yields and acceptable commercial recoverable sucrose (CRS) on these soils, as well as its resistance to brown rust, orange rust (caused by Puccinia kuehnii E.J. Butler), and smut (caused by Ustilago scitaminea H. & P. Sydow); and its moderate resistance to Sugarcane mosaic virus strain E (mosaic) and ratoon stunt (caused by Leifsonia xyli subsp. xyli Evtsuhenko et al.) in Florida. CP 04-1844 is susceptible to leaf scald (caused by Xanthomonas albilineans Ashby, Dowson) and Sugarcane yellow leaf virus. CP 04-1844 had acceptable tolerance to freezes based on similar ranking in CRS deterioration with CP 72-2086, CP 78-1628, and CP 89-2143 after they and 17 other genotypes were exposed to 93 h of temperatures = -3° C between 10 Dec. 2010 and 27 Jan. 2011.
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