Registration of ‘CP 10-1620’ sugarcane

Authors: DAVIDSON, WAYNE - Florida Sugar Cane League; Gordon, Vanessa; Islam, Md; MCCORD, PER - Washington State University; SANDHU, HARDEV - University Of Florida; Zhao, Duli; Sood, Sushma; COMSTOCK, JACK - Retired ARS Employee; MANINDER, SINGH - Michigan State University; BALTAZAR, MIGUEL - Florida Sugar Cane League

Submitted to: Journal of Plant Registrations
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 12/16/2023
Publication Date: 4/5/2024
Citation: Davidson, W.R., Gordon, V.S., Islam, M.S., Mccord, P.H., Sandhu, H.S., Zhao, D., Sood, S.G., Comstock, J.C., Maninder, S.P., Baltazar, M. 2024. Registration of ‘CP 10-1620’ sugarcane. Journal of Plant Registrations. 18:363-373. https://doi.org/10.1002/plr2.20365.
DOI: https://doi.org/10.1002/plr2.20365

Interpretive Summary: 'CP 10-1620’ was developed through cooperative research conducted by the USDA-ARS, the University of Florida, and the Florida Sugar Cane League, Inc. It was tested at multiple locations for disease resistance and yield performance in Florida. CP 10-1620 was commercially released by the Florida sugarcane variety committee in 2018 for sand soils in Florida because of improved yields and disease resistance based on data collected from three crops (plant cane, first ratoon, and second ratoon) and four sand locations as compared with check cultivars (CL 88-4730, CP 96-1252, and CPCL 97-2730). Therefore, the Florida growers can request seed cane from the Florida Sugar Cane League and grow CP 10-1620 on their sand soils for production. Detail information about CP 10-1620 can be found from this registration publication.

Technical Abstract: 'CP 10-1620’ (Reg. no. CV-216, PI 693837) 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. At the June 7, 2018, Florida Sugarcane Variety Committee Meeting, CP 10-1620 was released to growers for mineral (sand) soils in Florida, and seed was available in September 2018. CP 10-1620 was selected from a polycross of ‘CP 00-1100’ × ‘CP 05-1740’ (Cross no. X07-1225) made at Canal Point, FL, in December 2007. Neither the female parent, CP 00-1100, nor the male parent, CP 05-1740, is a commercial cultivar. Cane yield of CP 10-1620 on sand soils, averaged across 12 harvests through three crop cycles (plant cane, first ratoon, and second ratoon), was 11.0% higher (P < 0.05) than the combined mean of three checks, ‘CL 88-4730’, ‘CP 96-1252’, and ‘CPCL 97-2730’, which are commercial checks for sand soils. The commercial recoverable sucrose for CP 10-1620 was not significantly lower than the combined mean of the checks but the higher cane yield resulted in 8.4% higher (P < 0.05) sucrose yield than the combined mean of the checks. CP 10-1620 was released because of its high cane yields on sand soils, and its acceptable levels of resistance to brown rust (caused by Puccinia melanocephala H. & P. Sydow), leaf scald (caused by Xanthomonas albilineans Ashby, Dowson), Sugarcane mosaic virus strain E (mosaic), smut (caused by Sporisorium scitamineum), Sugarcane yellow leaf virus, and ratoon stunt [caused by Leifsonia xyli subsp. xyli (Davis et al.) Evtushenko]. CP 10-1620 was moderately susceptible to orange rust (caused by Puccinia kuehnii E. J. Butler), and it has high freeze tolerance. CP 10-1620 tested positive for the Bru1 locus, which is an indicator of brown rust resistance.