Registration of C.P. 63‐588 Sugarcane 1 (Reg. No. 13)

‘CP 04‐1844’ (Reg. No. CV‐153, PI 664935) 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 was released in Florida on 20 Sept. 2011. CP 04‐1844 was selected from the cross X01‐0336 (CP 97‐1989 × CP 84‐1198) made at Canal Point, FL on 5 Dec. 2001. The female parent, CP 97‐1989, was a high‐tonnage cultivar released for sand soils in Florida but was not grown extensively because it became susceptible to brown rust (caused by Puccinia melanocephala H. & P. Sydow) after its release. The male parent, CP 84‐1198, is a cultivar with moderate tonnage and sucrose levels that peaked at 5.1% of the commercial acreage in Florida and is still grown commercially. CP 04‐1844 was tested in the final selection stage (stage 4) on sand soils in Florida and was released because of its high cane and sucrose yields and acceptable commercial recoverable sucrose on these soils, as well as for its resistance to brown rust, orange rust (caused by Puccinia kuehnii E.J. Butler), and smut (caused by Ustilago scitaminea H. & P. Sydow) and its moderate resistance to Sugarcane mosaic virus strain E (mosaic) and ratoon stunt (caused by Leifsonia xyli subsp. xyli Evtushenko et al.) in Florida. CP 04‐1844 is susceptible to leaf scald (caused by Xanthomonas albilineans Ashby, Dowson) and Sugarcane yellow leaf virus. The freeze tolerance of CP 04‐1844 was at least equal to that of cultivar CP 89‐2143 during 2 yr of testing. CP 89‐2143 is considered to have acceptable freeze tolerance for Florida.

mentioning

confidence: 99%

Registration of ‘CP 04‐1844’ Sugarcane

Glaz¹,

Edmé²,

Davidson³

et al. 2013

“…CL 90-4725 was used extensively by the USSC, but its hectarage is declining because of its susceptibility to brown rust and a reduction in stalk populations in ratoon cane on organic (muck) soils. There are five cultivars in the pedigree of CPCL 05-1791 that were the most widely planted cultivars for at least 1 yr in Florida or Louisiana: CP 72-2086 (CSR 458;Miller et al, 1984), CP 70-1133 (MIA 34310; Rice et al, 1978), CP 63-588 (CSR 422; Rice et al, 1969), CL 61-620 (CSR 452; Holder and Todd, 1981), and CL 41-223 (PI 495720; Bourne and Weetman, 1971). The breakdown of resistance to brown rust was a major reason for the reduction in commercial planting of CL 41-223, CL 61-620, CP 63-588, andCP 70-1133.…”

mentioning

confidence: 99%

Registration of ‘CPCL 05‐1791’ Sugarcane

Davidson¹,

Zhao²,

Comstock³

et al. 2013

Development of ‘CPCL 05‐1791’ (Reg. No. CV‐156, PI 667555) sugarcane (a complex hybrid of Saccharum spp.) is the latest in a series of commercial sugarcane cultivar releases originating from the United States Sugar Corporation (USSC) and completed by the cooperative Canal Point sugarcane breeding and selection program (CP program) which includes the USDA‐ARS, the University of Florida, and the Florida Sugar Cane League, Inc. CPCL 05‐1791, which was released in Florida on 20 Sept. 2012, was selected from a cross of CP 96‐1252 × CL 90‐4725 made at Clewiston, FL on 5 Dec. 2002. The male parent, CL 90‐4725, is a proprietary cultivar of USSC. CPCL 05‐1791 was released because of its high cane yield, moderate levels of commercial recoverable sucrose on mineral (sand) soils, and its resistance to smut (caused by Ustilago scitaminea H. & P. Sydow), Sugarcane mosaic virus strain E (mosaic), and orange rust (caused by Puccinia kuehnii E.J. Butler), and its moderate resistance to brown rust (caused by Puccinia melanocephala H. & P. Sydow) and leaf scald (caused by Xanthomonas albilineans Ashby, Dowson). All of these diseases are of economic importance to sugarcane production in Florida.

“…CL 91‐1637 had high biomass yields but was never released commercially due to its low commercial recoverable sucrose (CRS). Five genotypes—CL 61‐0620 (CSR 452; Holder and Todd, 1981), ‘CP 63‐588’ (CSR 422; Rice et al, 1969), ‘CP 70‐1133’ (MIA 34310; Rice et al, 1978), ‘CP 80‐1743’ (PI 542104; Deren et al, 1991) and CP 88‐1762—that were once major cultivars in Florida are in the lineage of CPCL 02‐1295. CP 80‐1743 and CP 88‐1762 still occupy significant acreage in Florida, although there are concerns about their susceptibility to orange rust (caused by Puccinia kuehnii E.J.…”

mentioning

confidence: 99%

Registration of ‘CPCL 02‐1295’ Sugarcane

Gilbert

Glynn²,

Milligan³

et al. 2013

Research to develop ‘CPCL 02‐1295’ (Reg. No. CV‐151, PI 664937) sugarcane (a complex hybrid of Saccharum spp.) was initiated by the United States Sugar Corporation (USSC) and completed cooperatively by the USDA‐ARS, the University of Florida, and the Florida Sugar Cane League, Inc. CPCL 02‐1295 was released to growers in Florida on 20 Sept. 2011. CPCL 02‐1295 was selected from a cross of ‘CP 88‐1762’ × genotype CL 91‐1637 made at Clewiston, FL on 26 Dec. 2001. The female parent, CP 88‐1762, is a major commercial cultivar in Florida with high sucrose yields on both muck and sand soils, and it occupied 23.1% of the total Florida acreage in 2009. The male parent, CL 91‐1637, reached the final testing stage of the USSC breeding program due to high biomass yields but was never released commercially because of its low sucrose content. CPCL 02‐1295 is resistant to brown rust (caused by Puccinia melanocephala H. & P. Sydow), Sugarcane mosaic virus strain E (mosaic), ratoon stunt disease (caused by Leifsonia xyli subsp. xyli Evtsuhenko et al.), and smut (caused by Ustilago scitaminea H. & P. Sydow). CPCL 02‐1295 is moderately susceptible to leaf scald (caused by Xanthomonas albilineans Ashby, Dowson) and orange rust (caused by Puccinia kuehnii E.J. Butler). CPCL 02‐1295 is recommended for both organic (muck) and sand soils in Florida, where it had high plant‐cane tonnage and sucrose yields in our tests.