Location: Sugarcane Field StationTitle: Registration of ‘CP 11-2248’ sugarcane for the Florida organic soils
|DAVIDSON, WAYNE - Florida Sugarcane League|
|MCCORD, PER - Washington State University|
|SANDHU, HARDEV - University Of Florida|
|COMSTOCK, JACK - Retired ARS Employee|
|BALTAZAR, MIGUEL - Florida Sugarcane League|
|SINGH, MANINDER - Michigan State University|
Submitted to: Journal of Plant Registrations
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 4/16/2020
Publication Date: 6/9/2020
Citation: Zhao, D., Davidson, W.R., Gordon, V.S., Islam, M.S., McCord, P.H., Sandhu, H.S., Sood, S.G., Comstock, J.C., Baltazar, M., Singh, M.P. 2020. Registration of ‘CP 11-2248’ sugarcane for the Florida organic soils. Journal of Plant Registrations. 14(3):318-327. https://doi.org/10.1002/plr2.20053.
Interpretive Summary: New sugarcane cultivars that yield well on organic (muck) soils and/or mineral (sand) soils and have acceptable resistance to major diseases are important because more than 70% of sugarcane grows on muck soils in Florida. Field data from 19 harvests of three crops (plant cane, first ratoon, and second ratoon) at multiple locations showed that CP 11-2248 yielded well in commercial sugarcane fields on muck soils. CP 11-2248 was released because of its relatively high cane and sucrose yields on muck soils, and its acceptable levels of resistance or tolerance to most diseases. CP 11-2248 might be susceptible to freeze temperatures because it ranked tenth (ratoon crop) to fourteenth (plant cane) for freeze tolerance among 16 genotypes in field tests, in North Florida (Hague) for temporal sucrose deterioration.
Technical Abstract: ‘CP 11-2248’ (Reg. no. CV-193, PI 692134) sugarcane (a complex hybrid of Saccharum spp.) was developed by the USDA–ARS, the University of Florida, and the Florida Sugar Cane League, Inc., and released to Florida growers for organic (muck) soils in June 2018. CP 11-2248 was developed from a polycross made at Canal Point, FL, on 16 Dec. 2009, with a breeding line CP 06-2664 as the female parent. The male parent was unknown and could be any one of the clones used in the polycross. CP 11-2248 was released for commercial use as an improved sugarcane cultivar because of its acceptable levels of resistance or tolerance to brown rust, orange rust, smut, leaf scald, and mosaic. CP 11-2248 was moderately susceptible to ratoon stunting disease and sugarcane yellow leaf virus in Florida. Based on the results of 19 harvests of three crops (plant cane, first ratoon, and second ratoon) in the final-stage (i.e., Stage 4) replicated yield trials carried out at seven locations with muck soils in Florida, CP 11-2248 had equivalent or slightly higher sucrose yield than check cultivars CP 96-1252 and CP 00-1101. CP 11-2248 might be poor in response to freezing temperatures based on the field tests in North Florida for temporal sucrose deterioration.