Data/hora: 21/09/2024 20:59:32

Biblioteca(s): 	Embrapa Arroz e Feijão.	
Data corrente: 	04/02/2015	
Data da última atualização: 	14/07/2015	
Autoria: 	NASCIMENTO, J. B.; BARRIGOSSI, J. A. F.; BORBA, T. C. de O.; MARTINS, J. F. da S.; FERNANDES, P. M.; MELLO, R. N. de.	
Afiliação: 	JACQUELINE BARBOSA NASCIMENTO, UNIVERSIDADE FEDERAL DE GOIAS; JOSE ALEXANDRE F BARRIGOSSI, CNPAF; TEREZA CRISTINA DE OLIVEIRA BORBA, CNPAF; JOSE FRANCISCO DA SILVA MARTINS, CPACT; PAULO MARÇAL FERNANDES, UNIVERSIDADE FEDERAL DE GOIÁS; RAQUEL NEVES DE MELLO, CNPAF.	
Título: 	Evaluation of rice genotypes for sugarcane borer resistance using phenotypic methods and molecular markers.	
Ano de publicação: 	2015	
Fonte/Imprenta: 	Crop Protection, v. 67, p. 43-51, Jan. 2015.	
DOI: 	10.1016/j.cropro.2014.09.018	
Idioma: 	Inglês	
Conteúdo: 	This study aimed to observe the response of 34 rice accessions to attack by sugarcane borer (Diatraea saccharalis Fabr., 1794) and to analyze the genetic diversity of these accessions by microsatellite markers. Twenty larvae were placed on the leaf sheaths of rice plants. At 30 days after infestation the rice plants at ground level were taken to the laboratory where the signs of borer attack, external and internal diameter of the stem and weight of surviving larvae were determined. For the molecular analysis of rice accessions, 24 microsatellite markers were used. The results of the morphological traits of the rice plant, response of the plant to insect attack, development of the sugarcane borer larvae and molecular data, indicated a genotypic variation. The accessions that most favored larval survival were IAC 47 and Ti Ho Hung. Larvae with highest weight (0.0986 g and 0.0862 g) and the largest internal diameters of the rice stem (3.18 mm) were found in land races ?Canela de Ferro? (rust colored stem) and all these ?Canela de Ferro? accessions also remained genetically grouped. The most tolerant materials, based on the ability to produce new tillers after larval infestation were, Chiang an Tsao Pai Ku and IR 40 which remained morphological and genetically grouped. The results of this study indicate that all the traits and molecular analyses were able to separate the accessions of rice into different groups in relation to resistance to the sugarcane borer. These materials can be used as donor sources in breeding for genetic resistance to sugarcane borers and can be used as donors to amplify the genetic base of Brazilian rice.	
Palavras-Chave: 	Insect resistance; Morphological traits; SSR markers.	
Thesagro: 	Arroz; Broca; Diatraea saccharalis; Inseto; Oryza sativa; Praga de planta.	
Thesaurus Nal: 	Genetic variation; Microsatellite repeats; Pest resistance; Rice.	
Categoria do assunto: 	O Insetos e Entomologia	
Registro original: 	Embrapa Arroz e Feijão (CNPAF)	
Exemplares: 	CNPAF - (33172-1) - UPC - AP - DD - 2015.005 -  - 2015.005 - DIS