Registration of ‘CP 07‐2320’ Sugarcane

Abstract

‘CP 07‐2320’ (Reg. No. CV‐177, PI 681716) sugarcane, a complex hybrid of Saccharum spp., was developed through cooperative research conducted by the USDA‐ARS, the University of Florida, and the Florida Sugarcane League and was released to growers in September 2015. CP 07‐2320 was selected from a cross made at the USDA‐ARS Sugarcane Field Station in Canal Point, FL, in December 2005. The female parent was CP 02‐2065, and the male parent was CP 96‐1865. CP 07‐2320 was superior to the reference cultivar ‘CP 89‐2143’ for muck soils with regards to stalk population, stalk weight, cane yield, commercial recoverable sucrose (a measure of sucrose content), sucrose yield, and economic index (i.e., overall profitability). CP 07‐2320 was superior to the reference cultivar ‘CP 78‐1628’ for sand soils with respect to stalk weight, cane yield, commercial recoverable, sucrose yield, and economic index. The cultivar is resistant to brown rust (caused by Puccinia melanocephala H. & P. Sydow), leaf scald (caused by Xanthomonas albilineans Ashby, Dowson), and ratoon stunt (caused by Clavibacter xyli subsp. xyli Davis). CP 07‐2320 is susceptible to Sugarcane mosaic virus strain E (mosaic), based on the results of an artificial inoculation test, and is moderately susceptible to smut [Sporisorium scitamineum (Syd.) Piepenbring et al.], Sugarcane yellow leaf virus, and orange rust (Puccinia kuehnii E.J. Butler) under field conditions. This cultivar is recommended for both organic (muck) and mineral (sand) soils in Florida.