Mestrado em Agronomia

URI Permanente para esta coleção

http://repositorio.ufes.br/handle/10/17350

Nível: Mestrado Acadêmico
Ano de início: 2004
Conceito atual na CAPES: 4
Ato normativo: Mestrado - Reconhecido Port. MEC 609, de 14/03/2019, DOU 18/03/2019, parecer 487/2018).
Periodicidade de seleção: Semestral
Área(s) de concentração: Produção Vegetal
Url do curso: https://producaovegetal.ufes.br/pt-br/pos-graduacao/PPGA/detalhes-do-curso?id=1427

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    Caracterização morfofisiológica e genética de progênies de Coffea canephora irmãos completos provenientes do cruzamento de genótipos contrastantes quanto a tolerância a seca
    (Universidade Federal do Espírito Santo, 2000-01-24) Cremonini, Gustavo Miranda; Co-orientador1; https://orcid.org/; http://lattes.cnpq.br/; Co-orientador2; https://orcid.org/; http://lattes.cnpq.br/; Co-orientador3; https://orcid.org/; http://lattes.cnpq.br/; Co-orientador4; ID do co-orientador4; Lattes do co-orientador4; Orientador1; https://orcid.org/; http://lattes.cnpq.br/; Orientador2; https://orcid.org/; http://lattes.cnpq.br/; https://orcid.org/; http://lattes.cnpq.br/; 1º membro da banca; https://orcid.org/; http://lattes.cnpq.br/; 2º membro da banca; https://orcid.org/; http://lattes.cnpq.br/; 3º membro da banca; https://orcid.org/; http://lattes.cnpq.br/; 4º membro da banca; http://lattes.cnpq.br/; 5º membro da banca; https://orcid.org/; http://lattes.cnpq.br/; 6º membro da banca; https://orcid.org/; http://lattes.cnpq.br/; 7º membro da banca; https://orcid.org/; http://lattes.cnpq.br/
    Coffee is a plant and a product popularly known throughout the world. The genus Coffea has two widely known species: Coffea arabica, which has an Ethiopian origin, and Coffea canephora, which originates from an area that covers an extension from the Congo until New Guinea. Drought tolerance is a desirable characteristic in crops because it allows plants to survive and grow in regions with low water availability, or with problems of annual distribution. With the advancement of climate change and the increasing consumption of food worldwide, drought tolerance becomes a key characteristic to ensure food security and sustain the productivity that agriculture demands. The selection of plants that can tolerate water scarcity can increase the productivity and resilience of species under conditions of water stress, improve global food security, and promote adaptation to climate change. Thus, Coffea canephora has great economic importance for the state of Espírito Santo (ES) due to its productive potential and the quality of its beverage, which is consumed daily. The 12 progenies used in the experiment were selected from reciprocal crosses 109x120 and 120x109 between Conilon coffee clones with characteristics relevant to coffee growing, and it was found that clone 109 is susceptible and 120 is tolerant to drought. Of the 12 genotypes selected, 6 were preselected from the 120x109 population (3 tolerant – 3T, 6T, and 7T and 3 susceptible – 4S, 2S, 10S); and 6 were preselected from the 109x120 population (3 tolerant – 1T, 6T and 50T; and 3 susceptible 42S, 44S and 59S). The 120T and 109S parents were included in the analyses. Therefore, the objective of this proposal was to select Coffea canephora genotypes from crosses between clones 120 and 109, verifying the possible effects of reciprocal crosses 109x120 and 120x109 between Conilon coffee clones, with characteristics of interest for the coffee breeding program. Among the variables that were analyzed, the genotypes 1T, 2S, 3T, 6aT, 7T, 10S, 40S, 44S, and 59S stood out statistically in conditions of water scarcity, evidencing their tolerance to water deficit. In particular, the clones 2S, 40S, 44S, and 6aT, showed greater efficiency in water use compared to the others