Resumo

MUNOZ-TLAHUIZ, Faviola et al. Stover and grain production from maize landraces under rainfed conditions in the highland plateau of Libres-Serdán, Puebla, Mexico. Rev. mex. de cienc. pecuarias [online]. 2013, vol.4, n.4, pp.515-530. ISSN 2448-6698.

Maize stover is an important by-product for several ruminant species raised by small crop holders practicing agriculture under rainfed conditions, especially in the highland plateau in central Mexico known as the Mexican Altiplano. In such areas, no dual-purpose varieties (grain and stover) have been developed, for this reason, grain and stover production of local maize varieties were evaluated in the valleys of Puebla and Tlaxcala, Mexico. Seeds of native maize populations were gathered from two regions of the states of Puebla-Tlaxcala: Libres-Mazapiltepec-Huamantla (L-M-H) and Serdán-Tlachichuca-Guadalupe Victoria (S-T-GV). For each region 144 varieties, including four commercial controls were evaluated in two locations under a simple 12x12 lattice design with two replicates. The traits measured were stover, leaf and stalk production, height of plant and ear, days to silking and grain yield. An analysis of variance was carried out for each experiment and for each region a combined analysis was performed followed by a canonical analysis. Each region had a wide value interval (P<0.0001) for stover and grain production with local varieties ranging in yield from low to high. A few local varieties were found which had both high stover and grain yields (Pd 0.05). The improved commercial control varieties tested had lower yields for stover and grain than the local varieties which had greater yield for both traits.

Palavras-chave : Dual-purpose maize; Harvest index; Landraces; Production; Rainfed conditions.

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