Location: Sugarcane Field StationTitle: Fiber variation of the CP sugarcane varieties and fiber assessment in the Canal Point cultivar development program
|MCCORD, PER - Washington State University|
|FUFIDIO, ALEC - University Of Florida|
|YOUNG, ZACHARY - University Of Florida|
|DAVIDSON, WAYNE - Florida Sugarcane League|
|BALTAZAR, MIGUEL - Florida Sugarcane League|
Submitted to: American Society of Sugar Cane Technologists
Publication Type: Abstract Only
Publication Acceptance Date: 6/22/2019
Publication Date: 12/20/2019
Citation: Zhao, D., Mccord, P.H., Fufidio, A., Young, Z., Davidson, W., Baltazar, M. 2019. Fiber variation of the CP sugarcane varieties and fiber assessment in the Canal Point cultivar development program. American Society of Sugar Cane Technologists. Journal of American Society of Sugarcane Technologists. 39:32.
Interpretive Summary: N/A
Technical Abstract: Cane fiber content is an important agronomic trait in sugarcane cultivar development and commercial production. Manual determination of fiber content of fresh cane in a laboratory using traditional ways is time consuming with limited capacity. A cane presentation system (CPS) utilizing near infrared spectroscopy (NIRS) has been used at Canal Point (CP) to estimate Brix, Pol, fiber, and moisture of cane samples, but the CPS had been calibrated before being used in the CP sugarcane breeding program. In 2015 – 2017, the CPS was intensively re-calibrated for cane fiber content, in addition to juice Brix and Pol values, against the traditional lab measurements using diverse genotypes and stripped and unstripped canes. Results indicated that the average ratio of the traditional lab to CPS fiber contents of 219 cane samples was 0.843 and the linear relationship existed between the lab fiber measurements (X) and the CPS estimated values (Y) with Y = 0.775X + 2.9145, r2 = 0.705****. Therefore, the fiber values from the CPS, especially for low fiber genotypes, were greater than the lab values or overestimated. It is necessary to adjust the CPS fiber values using this linear equation. The paired comparison of stripped (X) and unstripped (Y) cane fiber contents from the CPS showed that Y linearly correlated to X with Y = 0.774X + 4.274, r2 = 0.747**** and the mean X:Y ratio = 0.933. After calibration and proper adjustment, therefore, the CPS can be used to accurately estimate mature cane fiber concentration of genotypes in sugarcane breeding programs and commercial cultivars in addition to sugar parameters (Brix and Pol).