|Richard Jr, Edward|
|Legendre, Benjamin - LSU AG CTR, BATON ROUGE|
Submitted to: Sugar Bulletin
Publication Type: Trade Journal
Publication Acceptance Date: October 20, 2007
Publication Date: October 20, 2007
Citation: Tew, T.L., Dufrene Jr, E.O., Garrison, D.D., White, W.H., Grisham, M.P., Pan, Y.-B., Richard Jr, E.P., Legendre, B.L., Miller, J.D. 2007. Notice of release of high-fiber sugarcane variety HoCP 91-552. Sugar Bulletin. 85(10):25-26. Technical Abstract: The Agricultural Research Service of the United States Department of Agriculture, the Louisiana Agricultural Experiment Station of the LSU Agricultural Center, and the American Sugar Cane League of the U.S.A., Inc., working cooperatively to develop improved sugarcane varieties, have jointly evaluated and released a new variety, HoCP 91-552, as a feedstock for an emerging biofuels industry. HoCP 91-552 is a product of the cross LCP 81-10 x CP 72-356 made at Canal Point (CP), Florida in 1986 and selected at Houma (Ho), Louisiana in 1988. It was evaluated in the commercial breeding program through the first-ratoon crop in advanced yield tests. The variety was ultimately dropped from further testing because of its fiber content of 16%, was considered unacceptable by commercial sugar processing standards. HoCP 91-552 was re-examined as a candidate variety for a biofuels industry in tests conducted from 2004 to 2006 from plant-cane the second-ratoon crop, harvested green using chopper harvesters with their extractor fans turned off. The tests were planted at two locations, one in Schriever, LA and the other near Welsh, LA. In these tests, HoCP 91-552 produced 26% more cane, 25% more total sugars, 50% more fiber and 34% more total solids (sugar and fiber) than LCP 85-384 when averaged over the plant cane and two ratoon crops. HoCP 91-552 is resistant to sugarcane mosaic virus (strains A, B, and D) and sorghum mosaic virus (strains H, I, and M). In a single replicated inoculated field test, the cultivar was resistant to smut (Ustilago scitaminea Sydow) and leaf scald [Xanthomonas albilineans (Ashby) Dowson] diseases. Occurrence of these diseases, as well as rust (Puccinia melanocephala H. and P. Syd.), were not observed under natural field infection conditions. Similar to essentially all sugarcane varieties released in Louisiana, HoCP 91-552 can sustain significant reductions in cane and sugar yields in ratoon crops from ratoon stunting disease (RSD) [Leifsonia xyli subsp. xyli (Davis et al.) Evtushenko et al.]. HoCP 91-552 is moderately resistant to the sugarcane borer (Diatraea saccharalis F.), but should be scouted to insure proper management.