Resumo

VALDIVIA BERNAL, Roberto et al. 'Cora 2012': intervarietal corn hybrid for Nayarit and similar regions. Rev. Mex. Cienc. Agríc [online]. 2015, vol.6, n.2, pp.417-420. ISSN 2007-0934.

The intervarietal Cora hybrid of maize 2012 was developed by the method of Reciprocal Recurrent Selection (RRS). A heterotic pattern of P * A populations is used. The first two cycles were with half sib progeny supported by corn farmers from Nayarit, participatory breeding. From the third cycle, progeny were from reciprocal full siblings through crosses between lines S1, type P S1 * A S1. Cora 2012 was derived from the third cycle. The formation of populations (1999-2001) and the implementation of RRS (2002-2010) were performed in Nayarit. The evaluation was conducted in Nayarit (2005-2010) and validation included the states of Jalisco, Michoacán and Sinaloa (2010-2013). The characterization was made in Nayarit (2010- 2011) and was assigned as 'MAZ-1477-010313' in the record from the Catálogo Nacional de Variedades Vegetales (CNVV). Is has a similar behavior to current maize hybrids of 7 t ha^-1. On average, also have similar agronomic characteristics than commercial hybrids. Its greatest attribute is that it yields well even under changing climate factors, technology used and soil. Seed production is relatively easy and yields around 4.5 t ha^-1 of seed. Associated farmers and small seed companies may use seed from parents.

Palavras-chave : Zea mays L.; own seed; participatory breeding.

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