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Viability of Macrotyloma axillare cv. Guatá seeds under chemical scarification / Viabilidade de sementes de Macrotyloma axillare cv. Guatá submetidas a escarificação química

Rocha Terra, Suleize; Perez Granato, Thiago; Teixeira de Mattos, Waldssimiler; Gerdes, Luciana; Aparecida Giacomini, Alessandra.
B. Indústr. Anim.; 69: 33-33, 2012.
Artigo em Português | VETINDEX | ID: vti-467714

Resumo

The use of the associacion of grasses and legumes results in a good forage yield as well as a good animal performance due to maintenance of adequate levels of crude protein (CP) in the animal diet, both the direct effect of the ingestion of legumes, or even through indirect effect of the introduction of nitrogen by legumes in the pasture, thereby increasing the production of forage mass. However, the seeds of legumines have the so-called hardness seeds or dormant according to their coats impermeable to water. The hardness of the seed prevents the germination of the same since these seeds have a hard shell impervious to water and gas exchange, not allowing the imbibition of water by the seed, or embryo oxygenation. This dormancy may be broken by various known methods such as scarification, promoting cracks in the seed coat allowing the entry of water therein. In the case of Macrotyloma axillare exposure of seeds to scarification method has proven to be an efficient way to break dormancy and promoting seed germination. The aim of the present work was to evaluate the viability of seeds after suffering dormancy by immersion seeds in sulfuric acid. The experiment to break dormancy Macrotyloma axillares cv. Guatá was conducted in the laboratory of Plant Physiology at the Intituto de Zootecnia in Nova Odessa, São Paulo State, using the seeds that were stored in a cold room with temper
ês.
Biblioteca responsável: BR68.1