Crop Science Journal of Natural Resources and Life Sciences Education
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Published online 20 May 2008
Published in Crop Sci 48:941-950 (2008)
© 2008 Crop Science Society of America
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Location Contributions Determined via GGE Biplot Analysis of Multienvironment Sugarcane Genotype-Performance Trials

Barry Glaza,* and Manjit S. Kangb

a USDA-ARS Sugarcane Field Station, 12990 U.S. Highway 441 N, Canal Point, FL 33438
b School of Plant, Environmental, and Soil Sciences, Louisiana State Univ. Agric. Center, Baton Rouge, LA 70803-2110, current address: Punjab Agricultural Univ., Ludhiana 141 004, India. Mention of trade names or commercial products is solely for the purpose of providing specific information and does not imply recommendation or endorsement by USDA, Louisiana State Univ. Agric. Center, or Punjab Agric. Univ. over others not mentioned

* Corresponding author (Barry.Glaz{at}ars.usda.gov).

Selection for productive sugarcane (Saccharum spp.) cultivars in Florida has been more successful for organic than for sand soils. The objectives of this study were to assess the contributions of a sand-soil location to the final stage of multienvironment testing of sugarcane genotypes in Florida, and to identify locations with organic soils that, if replaced with a sand-soil location, would be least likely to compromise superior cultivar selection for organic soils in Florida. Sixteen genotypes were harvested in two or three crop cycles from 2002 to 2005 at nine locations. Traits analyzed were cane and sucrose yields (Mg ha–1) and theoretical recoverable sucrose (TRS) (g kg–1). The sand-soil location, Lykes, was generally neither highly representative of locations nor highly discriminating of genotypes. Results revealed the desirability of replacing an organic-soil location with a sand-soil location in the final testing stage of this sugarcane breeding and selection program. Caution must be exercised, however, to ensure that such action would not compromise genotype discrimination for TRS and sucrose yield. Ability to identify productive cultivars on organic soils by the Florida sugarcane selection program would be least compromised by replacing either Osceola or Knight with a sand-soil location.

Abbreviations: CP, Canal Point • DU, A. Duda and Sons, Inc. • CGL, crop cycle x genotype x location • EAA, Everglades Agricultural Area • EG, Eastgate Farms • GGE, genotype main effect (G) plus genotype x environment interaction effect (GE) • GL, genotype x location • KN, Knight Management, Inc. • LY, Lykes Brothers, Inc. • OK, Okeelanta Corporation 1 • OU, Okeelanta Corporation 2 • OS, Sugar Farms Cooperative North-Osceola Region • SF, Sugar Farms Cooperative North-SFI Region • TRS, theoretical recoverable sucrose • WW, Wedgworth Farms, Inc

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Received for publication June 8, 2007.




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