Employment of the REML/BLUP and Multivariate in Dwarf Cashew Clones in Pacajus, Ceará
DOI:
https://doi.org/10.17921/1415-6938.2025v29n4p952-967Abstract
There is a progressive worldwide interest in cashew nuts, demanding new cultivars that are more productive and resistant to pests and diseases, but a complicating factor is the number of characteristics evaluated. One solution is the use of multivariate statistics, which makes it possible to interpret these together. Therefore, employing the REML/BLUP (best linear unbiased prediction/restricted maximum likelihood) procedure along with multivariate analysis, this work aims to identify clones with the best performance. A total of 18 dwarf cashew clones were evaluated in an experimental design of randomized blocks, three replications, four plants per plot, spacing of 8 x 6 m, with the following characteristics being evaluated: NAN: visual note for the presence of anthracnose ; NMP: visual note for the presence of black mold; NOC: visual note for the presence of powdery mildew on the chestnut; NOI: visual note for the presence of powdery mildew on the inflorescence; PRO: nut productivity; PMC: average nut weight; IPP: Production precocity index. The main conclusions are: clones 1, 3, 4, 5, 7, 8, 9, 10, 11, and 18 stood out in four characteristics and 5, 8 and 10 in more than four; by Biplot, except for PMC, the clones show high GxA interactions; in the Box Plot the effect of years directly and positively influences the characteristics, mainly PRO, IPP, NMP, NOI, therefore greatly influenced by stochastic factors while PMC is the one with the least environmental influence, this confirms what was observed for results of heritability, accuracy and CVr ratio with higher values for PMC.
Keywords: Anarcardium occidentale L. Main Components. Plant Breeding. Genetic Variation. Genetic Gain.
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Copyright (c) 2025 Gilberto Ken Iti Yokomizo, Dheyne Silva Melo, Kuang Hongyu, Luiz Augusto Lopes Serrano, Francisco Das Chagas Vidal Neto
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