Abstract

DE LIRA JUNIOR, José Severino; FERNANDES BEZERRA, João Emmanoel  and  LEDERMAN, Ildo Eliezer. Repeatability of the production, number and weight of fruits of selections purple surinam cherry. Acta Agron. [online]. 2010, vol.59, n.1, pp.103-110. ISSN 0120-2812.

This study aimed to evaluate the production, number of fruits and weight of the fruit of selections of pitanga purple, different methods for estimating their coefficients of repeatability and the minimum number of evaluations required to select them with greater reliability, under edaphoclimatic conditions of the Forest Zone of North Pernambuco State, Brazil. The method of principal components was more efficient to estimate the repeatability coefficients of production, number of fruits and weight of surinam cherry fruit. The ‘Tropicana’ cultivar (red fruit) presents the highest average annual production when compared with the surinam cherry staining purple. Among the five purple surinam cherry of selections, the IPA-15.1 presents the highest average annual production. For weight of the fruit, the best result was obtained by selection IPA-41.1. The estimated coefficients for the production of fruit number and weight of the surinam cherry variance indicate that environmental influences such little phenotypic characteristics of a crop to another. For production, number of fruits and weight of the fruit are needed 2, 2 and 5 seasons, respectively, to select genotypes of surinam cherry higher with 90% reliability of the results.

Keywords : Myrtaceae; Eugenia uniflora L.; selection; Zona da Mata Norte de Pernambuco.

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