International Sugar Journal

Near-infrared reflectance (NIR) spectroscopy as a highthroughput screening tool for pest and disease resistance in a sugarcane breeding programme* [Full subscriber]

Pests and diseases cause major production and economic losses in sugarcane cropping systems. The most effective form of long-term protection is through the use of resistant varieties. However, phenotyping sugarcane genotypes for pest and disease resistance is difficult and costly. Near-infrared reflectance (NIR) spectroscopy was investigated for its potential to predict the constitutive components of resistance to pests and diseases in germplasm in the South African sugarcane breeding programme. Two hundred and twentytwo genotypes were scanned over the 1100-2300 nm wavelength range using a fiber-optic probe. Partial least square (PLS) regressions were applied to bud, internode and leaf spectra that…

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