EFFICIENCY OF SIMULTANEOUS USE BETWEEN DENDROGRAM AND AMMI IN SELECTING AÇAI PROGENIES

Abstract

The expansion of the pulp consumption of the açai fruit is in urgent need of research to obtain new cultivars, aiming to serve the fast growing market. A major obstacle is the amount of genetic materials that hinder the understanding of the graphic result, so this work aimed to use simultaneous multivariate analysis, grouping by dendrogram and AMMI to identify the superior ones. A total of 76 progenies were evaluated in a randomized block design, two replications and five plants per plot. It was evaluated: FV - green bunches number in formation; FLF - leaf launches number per stipe and; TM - Bunch size. The conclusions were that the combined use of multivariate analysis, grouping by dendrogram and graphical analysis AMMI, makes it possible to study a high quantity of progenies, making it effective, important and accurate; there is genetic variability available with distinct individual contributions to the GxA interaction, as well as environmental effects; the progenies with greater emphasis on stability and adaptability are P29, P55, P7, P8, P38, P5 and P24, not adding progeny based on the AMMI2 model, expanding with the dendrogram for progenies P72, P70, P9, P61 , P62, P64 and P73; the distinct performance of the progenies according to the years of evaluation, shows that the development of the plants generates a response to environmental factors depending on the stage of phenological development, making the research important to know the requirements and responses of the açai.