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Estimating Best Linear Unbiased Predictions (BLUP) for Yield and Quality Traits in Sugarcane

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Abstract

Cane yield and juice quality traits are essential and important in release of sugarcane variety for commercial cultivation. Twenty elite sugarcane clones along with two popular standards (Co 86032 and PI 1110) were evaluated at Sakthi sugars, Sivaganga, in two plant crops and one ratoon crop for 2 years to identify a variety suitable for this location. Cane yield (t/ha), commercial cane sugar (CCS) yield (t/ha), CCS % at harvest, juice sucrose %, juice brix %, juice purity %, single cane weight (kg), stalk height (cm) and stalk diameter (cm) at harvest were considered for the study. Within environment analysis of variance (ANOVA) indicated significant differences among genotypes for almost all the traits in all three environments (two plant and one ratoon crops). Combined ANOVA results displayed non-significant genotype environment interaction for all the traits except height and diameter. Cane yield and sugar yield were significant higher in II (second) plant crop compared to I (first) plant and ratoon crops, whereas no significance was observed for other traits. Heritability estimates were higher for juice quality traits as compared to cane traits. Single cane weight recorded highest estimates for repeatability and heritability of means over harvests. Best linear unbiased predictions were estimated for all the traits through restricted maximum likelihood method for individual crops and pooled data. The clone Co 09004 recorded high estimates for quality traits, and clone Co 11015 was found to be superior for both yield and quality traits.

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Acknowledgements

Authors gratefully acknowledge South Indian Sugar Mills Association (SISMA) for collaboration with ICAR-Sugarcane Breeding Institute, and cane personnel at Sakthi sugars private limited, Sivaganga, for taking good care of the crop and supporting in conduct of field trials. We express our gratitude to Director, ICAR-Sugarcane Breeding Institute, and Head, Division of crop improvement for providing adequate support to conduct this trial.

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  1. ICAR-Sugarcane Breeding Institute, Coimbatore, 641007, Tamil Nadu, India

    T. Lakshmi Pathy & K. Mohanraj

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  1. T. Lakshmi Pathy
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  2. K. Mohanraj
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Correspondence to T. Lakshmi Pathy.

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Pathy, T.L., Mohanraj, K. Estimating Best Linear Unbiased Predictions (BLUP) for Yield and Quality Traits in Sugarcane. Sugar Tech 23, 1295–1305 (2021). https://doi.org/10.1007/s12355-021-01011-4

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