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United States Department of Agriculture

Agricultural Research Service

Title: Incidence of Yellow Leaf Syndrome in Cp Cultivars Based on Polymerase Chainreaction and Serological Techniques

item Comstock, Jack
item Lockhart, B - UNIV OF MINESOTA

Submitted to: Sugar Cane
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: May 15, 1998
Publication Date: N/A

Interpretive Summary: YLS is widespread at Canal Point, Florida in sugarcane clones that are used as parents in the crossing programs for Florida, Louisiana, and Texas sugarcane industries. This indicates a lack of resistance in clones used by all three industries to infection by the luteovirus associated with YLS. Developing YLS resistance will be difficult. Since many of the Texas and Louisiana clones have been recently imported to Canal Point it suggests either that YLS is in these locations or that infection takes place shortly after being imported.

Technical Abstract: Yellow leaf syndrome (YLS) is widespread in parental clones that are used in the crossing programs for the Florida, Louisiana and Texas sugarcane industries at Canal Point, Florida. All except 3 of the 46 Florida clones, 3 of the 48 Louisiana clones, and 1 of the 17 Texas clones tested positive for the luteovirus associated with YLS. The luteovirus associated with YLS was detected using more than one assay system in many of the clones. Most clones with YLS did not have symptoms. Since the reverse transcriptase- polymerase chain reaction and serological leaf print assays detected the most clones with YLS, they were considered the most sensitive assays. The widespread occurrence of YLS in the parental clones indicates a general susceptiblity to infection by the luteovirus associated with YLS.

Last Modified: 4/21/2015
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