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United States Department of Agriculture

Agricultural Research Service


Location: Sugarcane Field Station

Title: Early Stage Selection Repeatability: Can We Learn Anything from the Past?)

item Glynn, Neil
item Gilbert, Robert
item Glaz, Barry
item Edme, Serge
item Comstock, Jack
item Tai, Peter
item Miller, Jimmy

Submitted to: Sandland Sugarcane Field Day
Publication Type: Abstract Only
Publication Acceptance Date: 3/20/2009
Publication Date: 3/20/2009
Citation: Glynn, N.C., Gilbert, R.A., Glaz, B.S., Edme, S.J., Comstock, J.C., Tai, P.Y., Miller, J.D. 2009. Early Stage Selection Repeatability: Can We Learn Anything from the Past?. Sandland Sugarcane Field Day. Paper Presentation only.

Interpretive Summary:

Technical Abstract: The sugarcane cultivar development program at Canal Point involves several stages of variety selection and advancement. Stage 2 of this program involves the evaluation of approximately 1500 clones and the advancement of approximately 135 clones to Stage 3 based on objective, quantitative yield data. Sugarcane clones in Stage 3 are evaluated at four locations three of which are muck soils and one sand soil, this procedure has been in place for 25+ years. Correlation analysis was used to examine the overall repeatability of Stage 2 with Stage 3 yield data; Tonnes of Cane per Acre (TCA), Total Recoverable Sucrose (TRS), Tonnes of Sucrose per Acre (TSA) and Economic Index (EI) in data from each of 23 Canal Point seriesā€™ between 1982 and 2004. Repeatability between Stage 2 data and Stage 3 on muck and sand soil locations was examined on data from the 1995 ā€“ 2004 Canal Point series using correlation analysis and also the changes in ranking position. Overall repeatability between Stage 2 and Stage 3 varied by series but was generally poor with the best correlations observed for TRS followed by TCA, TSA and EI. The relationship between Stage 2 and Stage 3 muck locations was also poor yet improved compared to Stage 3 sand soil locations. The average change in rankings of varieties between Stage 2 and Stage 3 was greater for Stage 3 sand than Stage 3 muck soils for all four traits.

Last Modified: 05/26/2017
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