A influência dos polinizadores na reprodução de Phaseolus vulgaris

• Autor(a) principal: Ribeiro, Paula Louredo Moraes
• Data de Publicação: 2019
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Repositório Institucional da UFG
• Texto Completo: http://repositorio.bc.ufg.br/tede/handle/tede/11509
• topic: Feijão orgânico; Polinização do feijão; Phaseolus vulgaris L.; Produção de sementes; Organic beans; Bean pollination; Phaseolus vulgaris L.; Seed production; CIENCIAS BIOLOGICAS::BOTANICA

The present work evaluated whether pollinators interfere in the production of fruits and seeds of Creole cultivars of Phaseolus vulgaris L. in organic cultivation. Eight cultivars were observed in the years 2017 and 2018. The study was carried out at Fazenda Nossa Senhora Aparecida, municipality of Hidrolândia - Goiás, where only organic foods are produced. In the year 2017, in five cultivars were randomly marked 15 individuals, while all other cultivars had 30 individuals randomly selected. In each plant chosen, an inflorescence had flower buds counted and isolated with an organza bag, while another inflorescence of the same plant also had flower buds counted, marked with plastic seals and left free for the visit of the pollinators. The parameters evaluated were the number of pods and seeds produced and the total weight of these seeds per plant. In order to verify the effect of the treatments on the production of pods and seeds, for each bean cultivar, Mixed General Linearized Models (GLMM) were used assuming the negative binomial distribution. To evaluate whether treatments affect seed weight, Mixed General Linearized Models (GLMM) like those described above were used, but assuming gamma distribution. All the statistical analyzes were carried out on the R platform. The quantity and viability of the pollen grains was observed in 30 flower buds of each cultivar studied in the year 2018. The amount of pollen and pollen viability was high in all studied cultivars, indicating the importance of pollination to produce bean seeds. According to the GLMM analyzes, in the year 2017, three cultivars presented higher pod and / or seed production in the treatment of the non-bagged inflorescences. In the year 2018, another four cultivars also presented the same result, suggesting that these cultivars have greater reproductive success with the visit of the pollinators.