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Registration of 'CP 11-1640' sugarcane

Zhao Duli, Davidson Wayne R., Gordon Vanessa S., Islam Md Sariful, Sandhu Hardev S., Sood Sushma Gupta, Baltazar Miguel, Mccord Per H., Migneault Andrew, Arbelo Orlando, Momotaz Aliya
Journal of plant registrations 2021 v.15 no.2 pp. 326-336
Agricultural Research Service, Saccharum, Sugarcane mosaic virus, cooperative research, cultivars, females, hybrids, leaf rust, males, orange rust, sand, scald diseases, sucrose, sugarcane, Florida
'CP 11-1640' (Reg. no. CV-199, PI 695085) 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 by the Florida Sugarcane Variety Committee (FSVC) to growers for commercial cultivation on mineral (sand) soils in Florida in June 2019. It was selected from a polycross made at Canal Point (CP) on 2 January 2009 with a CP sugarcane breeding line CP 01-2390 (female parent). The male parent of CP 11-1640 was unknown and could be any one of clones used in the polycross. CP 11-1640 was released by FSVC because of its high cane and sucrose yields and acceptable commercial recoverable sucrose, and its resistance to brown rust, orange rust, leaf scald, Sugarcane mosaic virus strain E (mosaic), and smut. Based on results of 12 harvests with three crops (plant cane, first ratoon, and second ratoon) at four locations in final-stage replicated yield trials on sand soils and compared with three reference cultivars (CL 88-4730, CP 96-1252, CPCL 97-2730), CP 11-1640 had significantly higher cane yield (13.4-16.9%), sucrose yield (12.0-12.8%), and economic index (10.9-16.9%) than CL 88-4730 and CPCL 97-2730, and did not differ from CP 96-1252 in any of these traits. Cane fiber concentration of CP 11-1640 (138.9 kg Mg-1) was equivalent to that of CL 88-4730, but slightly higher than those of CP 96-1252 and CPCL 97-2730. CP 11-1640 was considered to be moderately tolerant to freezing among 18 genotypes tested.