Portal de Periódicos da CAPES

INCIDENCIA DE FRUTOS PARTENOCÁRPICOS EN MANGO ‘ATAULFO’ EN HUERTOS COMERCIALES DE NAYARIT

2007; Chapingo Autonomous University; Volume: XIII; Issue: 2 Linguagem: Inglês

10.5154/r.rchsh.2007.01.001

2007-4034

M. H. Pérez-Barraza, V. Vázquez-Valdivia, J.A. Ozuna-García,

Horticultural and Viticultural Research

Ataulfo is the most important mango cultivar in Mexico's Nayarit state with almost 7,000 hectares planted, most of them replacing Tommy Atkins and Haden cultivars. However, the main problem of 'Ataulfo' is the high quantity of partenocarpic fruits, which do not have any commercial value, affecting the growers' economy. In order to know the magnitude of this problem, a randomized sampling of commercial orchards was done in four producer counties. The number of 'normal' and partenocarpic fruits per tree (10 randomized trees by orchard and 10 inflorescences by tree) were quantified. The sampling was done considering the following factors: a) altitude above sea level, b) Tree age, c) Ataulfo orchards located close to Tommy Atkins ones, and d) Ataulfo orchards located 200 m further than 'Tommy Atkins' ones. The quality of normal and partenocarpic fruits was also evaluated. It was observed that San Blas County had the highest presence of partenocarpic fruits (54.3 %), and Santiago Ixcuintla County had lower presence (27.3 %). Also in San Blas County, it was found that orchards located at altitudes higher than 400 masl had more presence of partenocarpic fruits (96 %) compared to those located less than 200 masl which had only 34.6 % of this kind of fruits. In Tepic County, the younger trees showed lower percentage of partenocarpic fruits (1.7 %) than trees older than 10 years old, which showed 47 %. Also, it was observed that 'Ataulfo' orchards located very close to those planted with 'Tommy Atkins' had less partenocarpic fruits. The patenocarpic fruits were shorter than 'normal' ones but they were sweeter.