Aspectos físicos, fisiológicos e sanitários de sementes crioulas de arroz (Oryza sativa L.) do Estado do Maranhão

Abstract

As one of the most important and consumed cereals, rice quality assurance is of utmost importance. The use of quality seeds is essential for good productivity of a plant throughout its cultivation process and the main quality attribute is the germination capacity, because depending on it, good quality seedlings will be generated with success in production and also as way of conserving the genetic resources that exist in them. The habit of preserving seeds in order to prevent the extinction of the species has been going on for a long time, and over the years, the need to keep them with the same quality for longer has increased. With the advancement of science, it was possible to obtain effective methods of seed quality assessment, enabling then to carry out studies on the aspects that influenced their quality, resulting in the conservation of species that could have somehow been lost. The state of Maranhão, an important rice producer, and prominent in the Northeast region, has its crops mainly in family farmers, who in turn have different varieties of the species in their respective production municipalities, which allows the cultivation of Creole seeds of rice, which in turn have great importance in various aspects of genetic heritage, expanding and maintaining genetic diversity, preserving biodiversity in agroecology and contributing to the development of family farming. The objective of this work is to evaluate the physical, sanitary and physiological quality, through tests of purity analysis, blotter test, germination and vigor of native rice seeds (Oryza sativa l.) from the State of Maranhão, having the varieties Cutião, Marabá and Red with high vigor ratings