|Gilbert, Robert - UNIVERSITY OF FLORIDA|
|Davidson, Wayne - FLORIDA SUGAR CANE LEAGUE|
Submitted to: Journal of Plant Registrations
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: March 11, 2008
Publication Date: May 29, 2008
Citation: Gilbert, R.A., Comstock, J.C., Glaz, B.S., Edme, S.J., Davidson, W.R., Glynn, N.C., Miller, J.D., Tai, P.Y.P. Registration of ‘CP 00-1101’ Sugarcane. Journal of Plant Registrations. 2:95-101. 2008. Interpretive Summary: Sugarcane is grown on organic and sand soils in a region near Lake Okeechobee in south Florida. This region contributes about 25% of U.S. domestic sugar production. New cultivars are needed that yield well on both soil types and have acceptable profiles of disease resistance, but only rarely are such cultivars identified.Experimental data of CP 00-1101 suggest that it is one of these rare cultivars. On organic soils, the three-crop mean cane yield of CP 00-1101 was higher than that of CP 72-2086 and similar to that of CP 89-2143. CP 72-2086 and CP 89-2143 were the reference cultivars against which yields of CP 00-1101 were compared. The three-year mean sugar content on organic soils of CP 00-1101 was higher than the sugar contents of CP 72-2086 and CP 89-2143. Its high cane and sugar content resulted in a sugar per hectare yield and an economic index on organic soils that were both higher for CP 00-1101 than for CP 72-2086 and CP 89-2143. On sand soils, the sugar content of CP 00-1101 was higher than that of CP 78-1628, the reference cultivar for sand soils; CP 00-1101 and CP 78-1628 had similar cane yields. CP 00-1101 and CP 78-1628 also had similar sucrose yields on sand soils, but the mean economic index of CP 00-1101 for the three crop cycle was higher than that of CP 78-1628. Cultivar resistance and tolerance are the major sources of sugarcane disease control in Florida, but they are challenging to identify and quantify, because plants are growing and therefore exposed to disease pressures all year. CP 00-1101 has shown adequate resistance for commercial production in Florida to eye spot, smut, leaf scald, brown rust, sugarcane mosaic virus, and ratoon stunting. CP 00-1101 is susceptible to sugarcane yellow leaf virus, but its high yields in experimental plots were obtained regardless of this susceptibility. Orange rust infected commercial fields in Florida months before the release of CP 00-1101, but up to that time, there were no infections of orange rust identified on CP 00-1101. The commercial release of CP 00-1101 makes available to Florida growers a cultivar that maintains high yields in the presence of diseases, and therefore should help to continue providing the U.S. an affordable and stable sugar supply. Additionally, CP 00-1101 may be tested by farmers in Central America, who grow mostly Canal Point (CP) cultivars. CP 00-1101 was developed through cooperative research by the USDA-ARS, the University of Florida-Institute of Food and Agricultural Sciences, and the Florida Sugar Cane League, Inc., and was released in the autumn of 2007.
Technical Abstract: Sugarcane grown in a concentrated region near Lake Okeechobee in Florida produces 25% of the sugar produced in the U.S. The development of a constant supply of new sugarcane cultivars helps growers to respond to economic, pathological, and ecological pressures. The purpose of this research was to test yields, cold tolerance, and disease resistance of 13 new sugarcane genotypes in the plant-cane, first-ratoon, and second-ratoon crops in commercial fields at ten commercial sugarcane sites in Florida. CP 00-1101, an outstanding genotype in these tests, was selected among the progeny of a putative self cross of CP 89-2143. CP 89-2143 has been the most widely grown sugarcane cultivar in Florida since 2006. CP 00-1101 was developed through cooperative research conducted by the USDA-ARS, the University of Florida-Institute of Food and Agricultural Sciences, and the Florida Sugar Cane League, Inc., and was released in the autumn of 2007. In experiments on organic soils, yields of CP 00-1101 were compared with yields of cultivars CP 72-2086 and CP 89-2143. On sand soils, CP 00-1101 yields were compared with those of cultivar CP 78-1628. The mean stalk weights of CP 00-1101, CP 72-2086, and CP 89-2143, were 1.4, 1.5, and 1.5 kg, respectively on organic soils; and the stalk weights of CP 00-1101 and CP 78-1628 were both 1.0 kg on sand soils. Yields of theoretical recoverable sucrose (TRS) on organic soils for CP 00-1101, CP 72-2086, and CP 89-2143 were 124.0, 116.1, and 121.6 g sucrose per kg cane, respectively. Cane yields on organic soils for CP 00-1101, CP 72-2086, and CP 89-2143 were 145.8, 119.6, and 138.0 tons per ha, respectively; and sucrose yields on organic soils were 18.09, 13.89, and 16.77 kg per ha, respectively. On sand soils, TRS yields for CP 00-1101 and CP 78-1628 were 135.6 and 126.1 g per kg, respectively. Cane yields on sand soils for CP 00-1101 and CP 78-1628 were 78.4 and 75.3 tons per ha, respectively; and sucrose yields on sand soils were 10.63 and 9.49 tons per ha, respectively. Otherwise, CP 00-1101 has shown adequate resistance to all other major diseases in Florida except sugarcane yellow leaf virus. Based on tests conducted in Gainesville, FL, cold tolerance of CP 00-1101 is similar to that of CP 89-2143, one of the most cold-tolerant sugarcane cultivars in Florida. Based on its high sugar and tonnage yields in the presence of diseases prevalent in Florida, CP 00-1101 may make a substantial commercial contribution to sugarcane production in Florida.