Registration of ‘CP 11‐2248’ sugarcane for Florida organic soils

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 may be poor in response to freezing temperatures based on the field tests in north Florida for temporal sucrose deterioration. 'CP 11-2248' (Reg. no. CV-193, PI 692134) is an improved sugarcane (Saccharum spp. hybrid) derivative of a longterm recurrent selection program conducted through three-way cooperation of the USDA-ARS, the Univer

Registration of ‘CP 15‐1407’ sugarcane for muck soils

“…There was no growth crack in either of the genotypes. In order to determine the distinguishing agronomic and botanical descriptions of the new cultivar, other cultivars recently released (for production) in the Florida sugarcane industry were compared (Islam et al, 2019(Islam et al, , 2022(Islam et al, , 2023McCord et al, 2021;Zhao et al, 2020). On the plantcane of CP 15-1407 (planted on December 17-19, 2018) in the demonstration field, no flower was observed.…”

Registration of ‘CP 13‐4474’ sugarcane for sand soils

“…cultivars have been described in previous publications (Islam et al, 2019(Islam et al, , 2021Zhao et al, 2019Zhao et al, , 2020.…”

“…The flowering date of CP 13‐4474 was late December 2019 in the CP demonstration field where cane was planted in December 2017. Agronomic and botanical descriptions of a few recently released sugarcane cultivars have been described in previous publications (Islam et al., 2019, 2021; Zhao et al., 2019, 2020).…”

“…By comparing and comprehensive analysis of DNA fragments of those clones, it was determined that CP 13‐4474 is genetically unique. The fingerprint of CP 13‐4474 was also compared with previously released sugarcane cultivar from the CP program (Gordon et al., 2018; Islam et al., 2019, 2021; Sandhu et al., 2018; Zhao et al., 2020). In addition, CP 13‐4474 tested positive for the Bru1 locus (Table 6)…”

Registration of ‘CP 13‐1223’ sugarcane for Florida organic soils

“…The buds of CP 13-1223 were round with a central germpore and the color was yellow (5Y 6/4). Agronomic and botanical descriptions of other cultivars recently released (for production) in the Florida sugarcane industry were described Islam et al, 2019;McCord et al, 2021;Sandhu et al, 2020;Zhao et al, 2020). The flowering date of CP 13-1223 was in late December 2017 for plant cane and late January 2019 for the first ratoon in the demonstration field at Canal Point, FL.…”