Resumo

BARRIOS-GOMEZ, Edwin J. et al. Seed yield and its components in flor de mayo bean in Central Mexico. Agrociencia [online]. 2010, vol.44, n.4, pp.481-489. ISSN 2521-9766.

In central México, Flor de Mayo (FM) bean (Phaseolus vulgaris L.) is one of the most highly demanded commercial types. The objective of this study was to characterize FM type bean varieties for their seed yield and yield components under irrigation and rainfed conditions. During the spring-summer cycle of 2007, three experiments were designed in completely randomized blocks: one in Celaya, state of Guanajuato, with supplementary irrigation (single early irrigation), and one in Montecillo, Estado de México, under rainfed conditions. Eight FM varieties and the variety Michoacán 128 from the state of Michoacán, México, were evaluated. All varieties were of type III indeterminate growth habit. There were highly significant differences for environments and varieties, but not for the environment× variety interaction. On average, the environments of Celaya resulted in higher seed yields, followed by Montecillo under irrigation. On average, environment × variety (FM Noura, Anita and M38) produced higher seed yield, final aerial biomass, normal pods and seeds, and weight of 100 seeds (p<0.01). Michoacán 128 showed the lowest values for seed yield and its components. Seed yield was associated with final aerial biomass (R²=0.99**), normal pods (R²=0.75**), normal seeds (R²=0.71) and weight of 100 seeds (R²=0.6*). The most recently released varieties showed higher seed yield and values of its components, as well as final aerial biomass (p<0.01).

Palavras-chave : Phaseolus vulgaris L.; type III growth habit; seed yield; irrigation; rainfed.

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