|DAVIDSON, R WAYNE - Florida Sugarcane League|
|SANDHU, HARDEV - University Of Florida|
|GLYNN, NEIL - Syngenta Seeds, Inc|
|GILBERT, ROBERT - University Of Florida|
|MILLIGAN, SCOTT - Monsanto Corporation|
|HU, CHEN-JIAN - Us Sugar Corporation|
Submitted to: Journal of Plant Registrations
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 5/24/2013
Publication Date: 7/8/2013
Publication URL: http://handle.nal.usda.gov/10113/58633
Citation: Glaz, B.S., Edmé, S.J., Davidson, R.W., Zhao, D., Comstock, J.C., Sandhu, H.S., Glynn, N.C., Gilbert, R.A., Sood, S.G., Mccorkle, K.M., Milligan, S.B., Hu, C.J. 2013. Title of Manuscript: Registration of ‘CPCL 05-1102’ Sugarcane. Journal of Plant Registrations. 7:doi:10.3198/jpr2013.03.0012crc.
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. New cultivars that produce well on the sand soils are particularly needed to help sustain profits on these soils. Experimental data of CPCL 05-1102 suggest that it will yield well in commercial sugarcane fields on muck soils. On muck soils at seven locations, the three-crop mean yields were similar for CPCL 05-1102 and CP 89-2143, the reference cultivar against which yields of CPCL 05-1102 were compared. In fact, there were no significant differences between the cane yields, recoverable sucrose content, and economic indices of these two cultivars. 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 05-1102 has shown adequate resistance for commercial production in Florida to eye spot, smut, brown rust, orange rust, sugarcane mosaic virus, leaf scald, and ratoon stunting. As are almost all sugarcane cultivars in Florida, CPCL 05-1102 is susceptible to sugarcane yellow leaf virus. Through marker assisted selection, it was determined that CPCL 05-1102 does not have a gene that confers resistance to brown rust. This may be advantageous because it means that the resistance of CPCL 05-1102 to brown rust is due to some other genetic source. The commercial release of CPCL 05-1102 makes available to Florida growers a cultivar that maintains high yields on muck soils in the presence of most major sugarcane diseases prevalent in Florida. It is expected that CPCL 05-1102 will help to sustain sugarcane production on muck soils in Florida and help to continue providing the U.S. an affordable and stable sugar supply. Additionally, CPCL 05-1102 may be tested by farmers in Central America, who grow mostly Canal Point (CP) cultivars. CPCL 05-1102 was released on October 16, 2012.
Technical Abstract: ‘CPCL 05-1102’ sugarcane (a complex hybrid of Saccharum spp.) is the product of research initiated by the United States Sugar Corporation (USSC), and completed cooperatively by the USDA-ARS, the University of Florida, and the Florida Sugar Cane League, Inc. CPCL 05-1102 was released to growers in Florida on 16 Oct. 2012. CPCL 05-1102 was selected from a cross between the USSC proprietary cultivars CL 89-5189 (female) and CL 88-4730 (male) made at Clewiston, FL on 18 Dec. 2000. CL 89-5189 was used briefly in commercial plantings of USSC because it quickly became susceptible to ratoon stunt (caused by Leifsonia xyli subsp. xyli), and CL 88-4730 is widely used on commercial plantings of USSC, particularly on sand soils. CPCL 05-1102 has acceptable resistance to leaf scald (caused by Xanthomonas albilineans Ashby, Dowson), Sugarcane mosaic virus strain E (mosaic), smut (caused by Ustilago scitaminea (Sydow & P. Sydow), orange rust (caused by Puccinia kuehnii E.J. Butler), and brown rust (caused by Puccinia melanocephala H. & P. Sydow). Bru1, a major gene for resistance to brown rust, was not detected in the DNA of CPCL 05-1102. CPCL 05-1102 has high cane and sucrose yields and excellent freeze tolerance and is expected to be used on muck soils in Florida.