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Ciência Rural

versão impressa ISSN 0103-8478

Resumo

ALVES, Antonio Carlos; ALMEIDA, Milton Luiz de; LIN, Shiow Shong  e  VOGT, Gilcimar Adriano. Coleoptile tiller development in genotypes of oat and in different stress conditions and management. Cienc. Rural [online]. 2004, vol.34, n.2, pp. 385-391. ISSN 0103-8478.  http://dx.doi.org/10.1590/S0103-84782004000200008.

Plant selection of small grain species for coleoptile tiller development might become an important strategy for increasing the number of grains per unit of area and, consequently, crop yield. With this concern, the objective of this work was to study different genotypes and management practices regarding the coleoptile tiller. Four trials were established to evaluate different oat genotypes regarding their tillering capacities, as well as the impact of cutting of leaves of the main stem, and the influence of seed weight and seeding depth on tillering. Leaf and tiller development and dry weight of plants and tillers were measured in all trials. All genotypes presented low tillering potential, especially for the coleoptile tiller. The cut of the primary leaf of main stem, as well as the deeper seeding depth reduced both growth and development of plants. The seed weight did not affect these traits.

Palavras-chave : oat; growth; development; tillering potential.

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