Location: Sugarcane ResearchTitle: GGE analysis of ratooning ability in Louisiana sugarcane breeding Author
|Kimbeng, Collins - Lsu Agcenter|
|Gravois, Kenneth - Lsu Agcenter|
Submitted to: American Society of Sugar Cane Technologists
Publication Type: Abstract Only
Publication Acceptance Date: 3/30/2017
Publication Date: 6/14/2017
Citation: Todd, J.R., Kimbeng, C., Hale, A.L., Gravois, K., Dufrene Jr, E.O. 2017. GGE analysis of ratooning ability in Louisiana sugarcane breeding [abstract]. Journal of the American Society of Sugar Cane Technologists. 37:29-30.
Technical Abstract: Ratooning ability is an important sugarcane growth habit that affects profitability. Ratooning ability is the ability of sugarcane to regrow after harvesting and it is measured in this research as the percentage of second ratoon of a trait to plant cane. In sugarcane breeding programs, it is time consuming to comprehensively measure this trait because it takes at least three or more years to quantify. Cane yield statistics were calculated using GGE Biplot software for two crop cycles in the outfield including plant cane (PC) 2013 and second ratoon (SR) 2015 and plant cane (PC) 2014 and (SR) 2016. Heritability was high (0.87) and the best and worse ratooning cultivars grouped together when analyzed statistically using GGE Biplot; however, there were some exceptions due to GxE. For example, according to the GGE Biplot, HoCP 09-804 was high yielding and had stable percent ratooning fresh-weight cane yields in the 2014-2016 breeding cycle but much poorer performance and less stability this trait in the 2013-2015 cycle. This suggests that for some genotypes environment and harvest cycle affect ratooning ability more than for other genotypes.