Abstract
ABSTRACT Agrobiodiversity is essential for a sustainable food production, and the knowledge of the potential characteristics of landrace seeds may prompt farmers to adopt the habit of seed conservation for this species. This study aimed at categorizing landrace and commercial common bean (Phaseolus vulgaris L.) accessions, according to the physiological quality (viability and vigor) of seeds produced in the field, during two growing seasons, under organic and conventional farming systems. Germination percentage, field emergence, electrical conductivity, accelerated aging, cold test and seedling length were assessed. The landrace bean accessions exhibit diversity in the physiological seed quality, in terms of their viability and vigor. No differences were observed between the farming systems, in relation to the physiological quality of the seeds produced. The categorization of landrace common bean accessions allows to identify those with superior physiological seed quality.
Highlights
Ever since the beginning of agriculture, managing the diversity and crop species and varieties has been a central element in the sustainability of farming systems
This study aimed at categorizing landrace and commercial common bean accessions according to the physiological quality of seeds produced in two growing seasons, under organic and conventional farming systems
The study was conducted in the field, at the experimental station (27o23’14.37”S and 51o13’0.32”W) of the Empresa de Pesquisa Agropecuária e Extensão Rural de Santa Catarina (Epagri), in Campos Novos, Santa Catarina state, Brazil, and seed analyses were performed at the Seed Analysis Laboratory of the Universidade do Estado de Santa Catarina (UDESC)
Summary
Ever since the beginning of agriculture, managing the diversity and crop species and varieties has been a central element in the sustainability of farming systems. The federal law 10711/2003, which regulates the production and commercialization of seeds and seedlings in Brazil, allows farmers to keep part of their common bean production to use as seed in the crop (Brasil 2003). Keeping their own seeds allows farmers to control the central factor of production and ensure better plant adaptation to the environment in which they are produced, as well as guaranteeing, in the case of organic farming, that crops are produced under agroecological conditions. Validating agroecological farming technologies allows families to achieve more autonomy, which contributes to the development of local family farming (Altemburg et al 2013)
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