Location: Sugarcane Field StationTitle: Effect of Stagger Transplanting on Flowering of Sugarcane Parental Plants
Submitted to: American Society of Sugar Cane Technologists
Publication Type: Abstract Only
Publication Acceptance Date: 5/14/2021
Publication Date: 6/15/2021
Citation: Momotaz, A., Coto Arbelo, O., Zhao, D. 2021. Effect of Stagger Transplanting on Flowering of Sugarcane Parental Plants. American Society of Sugar Cane Technologists. 41:4-5.
Technical Abstract: Four sugarcane genotypes (CP 12-2195, CP 17-1934, CP 17-2061, and CP 96-1252) were evaluated on two different transplanting dates in a pot study at the USDA-ARS Sugarcane Field Station, Canal Point, Florida. The objective was to determine the effectiveness of early transplanting on parental plants on their flowering date. All eye pieces were planted on the flat on same date in early January 2020. With staggered planting, all of the clones were transplanted on pots two weeks earlier than the other set (regular transplanting) in the Canal Point sugarcane breeding program. The experiment was designed as RCB with four replications. Plants were grown in pots on the can line under the natural condition. Flowering dates for individual pots and stalks were recorded from early November 2020 through late January 2021 twice a week. In the early transplanting, all genotypes took longer time to bloom compared with the regular transplanting treatment. Genotypes showed significant effect on first day of flowering after transplanting (DAT). CP 12-2195, CP 17-1934, CP 17-2061 and CP 96-1252 flowered at 267, 267, 288 and 259 DAT, respectively in the early transplanting treatment. Compared with the early transplanting, CP 12-2195, CP 17-1934, CP 17-2061 and CP 96-1252 flowered 20, 18, 3, and 24 days earlier, respectively in the regular transplanting treatment. There were no differences in specific flowering date between the two transplanting treatments except for a genotype CP 17-2061. Early transplanting initiated flowering about 2 weeks earlier than the regular transplanting for CP 17-2061. The results revealed that there were some genotype differences in flowering responses to transplanting date. Further studies are needed to improve our knowledge in better understanding how to optimize flower synchronization in some sugarcane genotypes in order to facilitate intra-crossing.