This study was carried out to evaluate and select the best purple waxy corn lines self-pollination in S3 to S6 generation with high grain yield, marketable husk yield, anthocyanin content, and good eating quality and appropriated agronomical characteristics. These lines were developed from exotic and domestic germplasm. Phenotype data collected from field trial on the growth and development characteristic, yield and yield components, marketable husk yield, measurement of total anthocyanins by the visible spectra pH method, quality measured by eating testing, pericarp thickness by micrometer, sugar content by Brix meter showed °Bx, tenderness and taste evaluated by eating testing and recording score rank 1 to 9. Selection index analysis based on distances from ideotype plant analysis with 12 traits. Result was selected the best 18 purple waxy corn lines from 46 lines, these lines have high anthocyanin content from 22.4 to 260.10 µg/L, grain yield was ranged from 2.0 to 3.5 t/ha and marketable husk yield from 3.8 to 6.4 t/ha respectively, good eating quality and appropriated agronomical characteristics to continuous self-pollination develop inbred lines for development hybrid of the purple waxy corn. This study provides information on the concentration of anthocyanin content in gene pool of purple waxy corn in Viet Nam.
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