Data/hora: 22/06/2024 13:58:06

Biblioteca(s): | Embrapa Agricultura Digital.
Data corrente: | 26/12/2022
Data da última atualização: | 26/12/2022
Autoria: | SANTOS, C. S. dos; PEREIRA, F. A. C.; MAURI, J.; VIANA, M. T. R.; RODRIGUES, G. C.; VEIGA, A. D.; BARTHOLO, G. F.; CARVALHO, M. A. de F.
Afiliação: | CYNTIA STEPHÂNIA DOS SANTOS, EMPRESA DE PESQUISA AGROPECUÁRIA DE MINAS GERAIS; FERNANDA APARECIDA CASTRO PEREIRA, UNIVERSIDADE FEDERAL DE LAVRAS; JANAÍNA MAURI, UNIVERSIDADE FEDERAL DE LAVRAS; MARIANA THEREZA RODRIGUES VIANA, UNIVERSIDADE FEDERAL DE LAVRAS; GUSTAVO COSTA RODRIGUES, CNPTIA; ADRIANO DELLY VEIGA, CPAC; GABRIEL FERREIRA BARTHOLO; MILENE ALVES DE FIGUEIREDO CARVALHO, CNPCa.
Título: | Assessment of leaf anatomic and physiological characteristics and genetic divergence among Coffea arabica L. cultivars in the Brazilian Savanna.
Ano de publicação: | 2022
Fonte/Imprenta: | Pesquisa Agropecuaria Tropical, v. 52, e73265, 2022.
DOI: | 10.1590/1983-40632022v5273265
Idioma: | Inglês
Conteúdo: | The knowledge on cultivars is essential for parental choosing on breeding programs. This research aimed to study the genetic divergence of Coffea arabica L. cultivars from a germoplasm bank of the Embrapa Cerrados, Brazil, for leaf anatomic and physiological characteristics. A total of 23 cultivars were evaluated: Acaiá Cerrado MG1474, Araponga MG1, Catiguá MG1, Catiguá MG2, Catiguá MG3, Catiguá MG3 P4, Catiguá MG3 P5, Catiguá MG3 P7, Catiguá MG3 P9, Catiguá MG3 P23, Catiguá MG3 P51, Catuaí Amarelo IAC 62, Catuaí Vermelho IAC 15, Catuaí Vermelho IAC 81, Catuaí Vermelho IAC 99, Caturra Vermelho MG0187, Guatenano Colis MG0207, Mundo Novo IAC 379-19, Paraíso MG1, Pau Brasil MG1, Sacramento MG1, San Ramon MG0198 and Topázio MG1190. In addition to the genetic divergence, the broad sense heritability and coefficient of genetic and environmental variation were also evaluated. All characteristics showed high coefficients of genetic variation and heritability values greater than 70 %, indicating a predominance of genetic over environmental factors, and that these are characteristics likely to obtain genetic gain. Catiguá MG1, Catiguá MG3 P51 and Topázio MG1190 stood out, with superior gas exchange characteristics. Attributes related to gas exchange were important for cultivar differentiation, demonstrating that they can be used in the early selection of Coffea arabica L. genotypes.
Palavras-Chave: | Cafeeiro; Coffee tree; Genetic breeding; Melhoramento genético; Trocas gasosas.
Thesagro: | Coffea Arábica.
Thesaurus Nal: | Gas exchange.
Categoria do assunto: | --
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1150333/1/AP-Assessment-leaf-anatomic-2022.pdf
Registro original: | Embrapa Agricultura Digital (CNPTIA)
Exemplares: | CNPTIA - (21533-1) - UPC - AP - DD -  -  -  - DIS