|DAVIDSON, R - Florida Sugarcane League|
|GILBERT, ROBERT - University Of Florida|
|GLYNN, NEIL - Syngenta Seeds, Inc|
|SANDHU, HARDEV - University Of Florida|
|MILLER, JIMMY - Retired ARS Employee|
|TAI, PETER - Retired ARS Employee|
Submitted to: Journal of Plant Registrations
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 5/29/2013
Publication Date: 5/29/2013
Publication URL: http://handle.nal.usda.gov/10113/58628
Citation: Zhao, D., Comstock, J.C., Glaz, B.S., Edme, S.J., Davidson, R.W., Gilbert, R., Glynn, N., Sood, S.G., Sandhu, H., Miller, J., Tai, P. 2013. Registration of ‘CP 05-1526’ Sugarcane. Journal of Plant Registrations. 7(3):305-311. DOI: 10.3198/jpr2013.02.0007crc.
Interpretive Summary: Sugarcane is grown on organic (muck) and sand soils in south Florida. This region contributes approximately 25% of U.S. domestic sugar production. New sugarcane cultivars are needed that yield well on both soil types and have acceptable resistance to major diseases, but only rarely are such cultivars identified. New cultivars that produce well on the sand soils are particularly needed to help sustain profits on these soils. Field data from three crops (plant cane and first- and second-ratoon crops) at multiple locations suggest CP 05-1526 yielded well in commercial sugarcane fields on muck and sand soils. On muck soils at seven locations, CP 05-1526 had 16 and 11% higher cane and sucrose yields, respectively, than CP 89-2143 (a check cultivar for muck soils). On sand soils at three locations, the three-crop mean cane and sucrose yields of CP 05-1526 were 25 and 23% higher, respectively, than that of CP 78-1628, the check cultivar for the sand soils. The three-year mean values of sugar content (commercial recoverable sucrose) of CP 05-1526 were slightly lower than those of CP 89-2143 (3.9%) on muck soils (3.9%) and CP 72-2086 (2.1%) on sand soils. The economic index of CP 05-1526 did not statistically differ from that of CP 89-2143 on muck soils, but 26% higher than that of CP78-2086 on sand soils. CP 05-1526 has shown adequate resistance or tolerance to eye spot, smut, leaf scald, brown rust, orange rust, sugarcane mosaic virus, and ratoon stunting for commercial production, but is susceptible to sugarcane yellow leaf virus as are almost all sugarcane cultivars in Florida. The commercial release of CP 05-1526 makes available to Florida growers a cultivar that maintains high yields on both muck and sand soils in the presence of diseases. It is expected that CP 05-1526 will help to sustain sugarcane production in Florida.
Technical Abstract: ‘CP 05-1526’ 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 and sand soils in Florida in October 2012. CP 05-1526 was selected from the cross CP 98-1029 × CP 88-1162 made at Canal Point, FL in December 2002. The female parent (CP 98-1029) is a sugarcane cultivar released for commercial use in Florida in 2005. The male parent (CP 88-1162) is an experimental clone of the Canal Point sugarcane breeding and cultivar selection program (CP program). CP 05-1526 was released because of its high cane and sucrose yields and acceptable commercial recoverable sucrose (CRS) on both organic and sand soils, and its acceptable levels of resistance to brown rust (caused by Puccinia melanocephala H. & P. Sydow), orange rust (caused by Puccinia kuehnii E.J. Butler), leaf scald [caused by Xanthomonas albilineans Ashby, Dowson], Sugarcane mosaic virus strain E (mosaic), ratoon stunt (caused by Leifsonia xyli subsp. xyli Evtsuhenko et al.), and smut (caused by Ustilago scitaminea H. & P. Sydow) in Florida. CP 05-1526 has an intermediate level of freeze tolerance based on its relative rank of 11 in 22 genotypes tested and analyzed for temporal sucrose deterioration under field conditions.