2013 Annual Report
1a.Objectives (from AD-416):
Produce sugarcane seed of recommended crosses of clones from Louisiana, Texas and
Florida for the ARS Louisiana sugarcane Breeding Program.
1b.Approach (from AD-416):
Sugarcane clones will be imported from Louisiana, quarantined and tested for
pathogens of leaf scald, ratoon stunt, yellow leaf and mosaic. Subsequently, the
disease-free clones will be released and incorporated into the breeding population for crossing. The plants will be grown under conditions to maximize flowering by manipulating light treatments using photoperiod and light delay treatments. Recommended crosses will be made using female tassels pollinated with male tassels by maintaining plants with male tassels on either photoperiod carts or on rail carts that are moved into heated structures at night to prevent emasculation by cold temperatures. After crosses are made, the pollinated tassels will be held for seed set and the mature seed will be harvested and sent to the ARS program in Houma, Louisiana.
This research relates to inhouse objective 2: Develop better agronomic practices for the Florida sugarcane industry.
In the 2012/2013 crossing season, we made 772 crosses using 1563 female tassels for the USDA-ARS breeding program in Houma, LA. An additional 113 crosses using 211 female tassels were made and shared between Louisiana and Canal Point. It is estimated that 186,489 seeds were sent to Houma as a result of these efforts. Included are seed produced in a recurrent selection program for sugarcane borer resistance. Progress was monitored during the two weeks that scientists and support personnel from Houma spent at Canal Point making crosses for Louisiana, as well as at a 2-day planning meeting at Houma. In addition, there were several emails and phone calls between scientists at Houma and Canal Point to decide on parental genotypes to be used for Louisiana, to identify genotypes not currently at Canal Point that needed to be imported, and to monitor progress of seed shipped from Canal Point to Houma.