Registration of C.P. 56‐63 Sugarcane¹ (Reg. No. 8)

Abstract

Department of Agriculture and the Florida Agricultural Experiment Stations and was released to the industry in 1957.C.P. 50-28 is an early-maturing, medium-barrel, early-flowering cultivar. It is adapted to the cold organic and sandy soils of Florida because ot~ its outstanding stubbling or ratooning ability. Although the fiber content of C.P. 50-28 is objectionable to some processors, the cold tolerance and exceptional stubbling qualities are distinct advantages of this cultivar.Seedcane of C.P. 50-28 wil be maintained by the U.S. Department of Agriculture at the U.S. Sugarcane Field Station, Canal Point, Fla. REGISTRATIONOF C.P. 56-59 SUGARCANE t (Reg. No. 7) C. O. Grassl~ E. R. Rice~ and L. P. Hebert The sugarcane cultivar "C.P. 56-59', a tri-species hybrid involving Saccharum o[[icinarum L., S. spontaneum L., and S. barberi Jeswiet, is a selection from the cross 'CI. 47-83' X 'C.P. 34-79.' The cross was made at Canal Point, Fla., during the 1956 crossing season. C.P. 56-59 was developed through the research efforts of the U.S. Department of Agriculture, the Florida Agricultural Experiment Stations, and the Florida Sugar Cane League, Inc., and was released to the industry in 1967.C.P. 56-59 is an early-maturing, medium-barrel, nonflowering cultivar that is recommended for the colddand area several miles from Lake Okeechobee and for early harvest on the warm-land areas near the Lake. The fiber content is less than from C.P. 50-28 but greater than from C1. 41-223, C.P. 56-59 produced slightly less sugar per ton of cane but 26% more sugar per acre than CI. 41-223, the most widely grown cultivar in Florida. C.P. 56-59 was moderately resistant to the mosaic disease in greenhouse inoculation tests.

Historical Use of Cultivars as Parents in Florida and Louisiana Sugarcane Breeding Programs

“…If one could rate the breeding success of a cultivar by having the most progeny that become cultivars, then the second most successful cultivar parent in the CP program was CP 70-1133 [ 38 ], which had five of its progeny that became cultivars ( Table 1 ). CP 56-63 [ 39 ], which was the female parent of a polycross that created CP 70-1133, was also a cultivar. The cultivar progeny of CP 70-1133 were CP 75-1082, CP 75-1632, CP 80-1827 [ 40 ], CP 82-1592 [ 41 ], and CP 84-1198 [ 42 ].…”

Registration of ‘CP 07‐2320’ Sugarcane

“…The maternal female grandparent, ‘CP 80‐1743’ (Deren et al, 1991) was also a commercial success, reaching 33% of Florida hectarage in 2004 (Glaz and Vonderwell, 2005), and the paternal male grandparent, ‘TCP 87‐3388’ (Irvine et al, 1997) is a commercial cultivar in Texas. One of the maternal great‐grandparents, ‘CP 70‐321’ (Fanguy et al, 1979), was a major commercial cultivar grown in Louisiana, and one of the paternal great‐grandparents, ‘CP 56‐63’ (Hebert et al, 1969) was also released for commercial use in Louisiana. True seed was sown in the greenhouse in January 2006, and seedlings were transplanted to the field in May.…”

Registration of ‘CP 04‐1935’ Sugarcane

“…This had the added advantage of slowing down the decrease in genetic diversity by recycling rare and previously lost alleles. Through both parents, CP 04‐1935 has nine previously released cultivars in its pedigree, such as ‘CP 52‐68’ (Bischoff et al, 2008), ‘CP 56‐63’ (Hebert et al, 1969; CSR 417), CP 62‐374; CSR 421), ‘CP 63‐588’ (Rice et al, 1969; CSR 422), CP 65‐357, CP 70‐1133, CP 72‐1210, CP 72‐2086, and ‘CP 85‐1308’ (Tai et al, 1995; PI 583848). Moreover, CP 04‐1935 is a descendant of the Co lineage side of the CP pedigree (Tai and Miller, 1978), with Co 281 and Co 421 as its great‐great‐grandparents.…”