Morpho-agronomic characterization of selected yellow-kernel farmer-bred varieties of maize (Zea mays L.) in the Philippines
2019
Nuñez, J.P.P. | Magdua, L.M. | Reaño, C.E. | Laude, T.P.
Farmer-bred varieties of 'landraces' present a pool of unique adaptation traits that may be utilized in crop improvement. A total of 104 yellow-kernel colored farmer-bred varieties collected from nine regions (composing 11 provinces) of the country was planted on 2018 Wet Season for phenotypic characterization using a revised characterization/descriptor list. Majority of categorical (qualitative) variables present nodifferences while most of scale/continuous (quantitative) variable detect significant differences among entries. Through principal component analysis, we found that 80.46% of the total variation on 22 quantitative variables may be explained by 6 principal components. Around 83.05% of the total variation on 22 quantitative variables may be explained by 6 principal components as well using Gower's distance, cluster analysis reveals apparent similarities and/or relationships(s) between farmer-bred varieties in terms of 22 quantitative variables that may predict yield. Considering these similarities, our results may aid in determining which farmer-bred variety-(ies) can be utilized for maize improvement programs at the Institute of Plant Breeding.
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