Abstract
The objectives of this study were to determine the importance of simple and complex components of the interaction genotype × environment and to evaluate the adaptability and stability of Gália melon hybrids. Nine hybrids were tested in twelve environments of Rio Grande Norte State from 2000 to 2001. The experiments were carried out in a randomized complete block design with three replications. The statistical methods of Toler and Burrows, Wricke and AMMI (Additive Main effect and Multiplicative Interaction) were used to study the adaptability and stability. The complex component is responsible for most of the genotype × environment interaction for the yield and content of solids soluble of fruits. The environments associated with Mossoró and Assu municipalities are the most suitable to evaluate melon hybrids in the state. The hybrid DRG 1537 was the most likely to be grown in the Agro-industrial Complex Mossoró-Assu due to its stability, high productivity and high content of soluble solids.
Highlights
The Mossoró-Assu Agro-industrial Complex situated in Rio Grande do Norte State is the Brazilian leading producer and exporter of melons (FNP 2008)
To choose any of these hybrids that grow in Europe and America – without any prior evaluation of the yield and quality of their fruits – can jeopardize the trade between Brazil and the international market once European consumers are very concerned about the quality of the fruits they eat (Nunes et al 2004)
The genotype × environment interaction for these traits was previously observed in another trials of yellow melon hybrids carried out in the municipalities of the Mossoró-Assu Agro-industrial Complex (Gurgel et al 2005, Nunes et al 2006), suggesting the need to evaluate the new genotypes in different environments to insure that the best ones are recommended for each particular area
Summary
The Mossoró-Assu Agro-industrial Complex situated in Rio Grande do Norte State is the Brazilian leading producer and exporter of melons (FNP 2008). The melon crop plays a major social role by employing between 15,000 and 20,000 people. Climatic conditions such as intense sunlight – about 3,000 hour.year−1 – and low rainfall indicators – excepting the January-May period once it is the “rainy season” – in association with the use of high technology by the production sector, place the state in a very important position in the national agribusiness (Nunes et al 2005). To choose any of these hybrids that grow in Europe and America – without any prior evaluation of the yield and quality of their fruits – can jeopardize the trade between Brazil and the international market once European consumers are very concerned about the quality of the fruits they eat (Nunes et al 2004)
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