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Title: Registration of Cp 94-1100 Sugarcane

Authors
item Tai, Peter
item Miller, Jimmy
item Glaz, Barry
item Gilbert, Robert - UNIVERSITY OF FLORIDA
item Davidson, Joseph - FLORIDA SUGAR CANE LEAGUE
item Dunckelman, John - FLORIDA SUGAR CANE LEAGUE
item Comstock, Jack

Submitted to: Crop Science
Publication Acceptance Date: March 31, 2004
Publication Date: August 23, 2004
Citation: Tai, P.Y., Miller, J.D., Glaz, B.S., Gilbert, R.A., Davidson, J., Dunckelman, J., Comstock, J.C. 2004. Registration Of Cp 94-1100 Sugarcane. Crop Science. Crop Science 44:1869-1870(2004).

Interpretive Summary: Sugarcane is grown on about 450,000 acres in south Florida (mostly in the Everglades). There is a need to develop cultivars with improved disease resistance, sucrose content and cane yield to maintain the stability of the Florida sugarcane industry. Genetic resistance is the primary way to control diseases in sugarcane therefore, it is desirable to have a large number of cultivars being grown at any one time to reduce the genetic vulnerability to the introduction of new insects or diseases. CP 94-1100 is being released because of improved sugar yields on both organic and sand soils. Its theoretical economic index was 12.6% higher on organic soils and 7.6% higher on sand soils that of CP 70-1133, the commercial check.

Technical Abstract: 'CP 94-1100' sugarcane (a complex hybrid of Saccharum officinarum L., S. barberi Jeswiet, S. spontaneum L., and S. sinense Roxb. amend. Jeswiet) (Reg. no. , PI ) was selected from progeny of the cross CP 81-1238 X CP 88-2045. CP94-1100 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 the Fall of 2001. Stalk weight of CP 94-1100 averaged over three crops (plant cane, first and second ratoon) was similar to that of the commercial check, CP 70-1133. Stalks of CP 94-1100 have a brownish-green color and are partially self stripping. CP 94-1100 was evaluated in eight yield trials over three crops(8 plant cane, 7 first- and 6 second-ratoon crops) on organic soils where its cane yield was 9.2% higher than that of CP 70-1133. The sucrose content of CP 94-1100 was equal to that of CP 70-1133. Its sucrose yield was 10.0% higher than that of CP 70-1133. The theoretical economic index on organic soils for CP 94-1100 was 12.6% higher than that of CP 70-1133. CP 94-1100 was evaluated in two yield trials over three crops(2 plant-cane, 2 first-and 1 second-ratoon crops) on sand soils. The cane yield of CP 94-1100 in these tests was 99.1% of that of CP 70-1133. Sucrose content and yield for CP 94-1100 were, respectively, 6.1% and 5.2% higher than those of CP 70-1133. The theoretical economic index on sand soils for CP 94-1100 was 7.6% higher than that of CP 70-1133. CP 94-1100 has shown field resistance in Florida to eye spot [caused by Bipolaris sacchari (E.J. Butler) Shoemaker], to smut (caused by Ustilago scitaminea Syd. & P. Syd.), and to sugarcane mosaic virus strain E. Inoculated test results indicated that CP 94-1100 is moderately susceptible to ratoon stunting disease (caused by Leifsonia (Clavibacter) xyli subsp. xyli Davis et al.) and to leaf scald [caused by Xanthomonas albilineans (Ashby) Dowson]. A low frequency of small rust pustules (caused by Puccinia melanocephala Syd & Syd.) was observed on CP 94-1100. CP 94-1100 has a fiber content of 9.7% compared to 10.4% for CP 70-1133.

   
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