Data/hora: 03/06/2024 18:11:13

Biblioteca(s): 	Embrapa Semiárido.	
Data corrente: 	06/09/2002	
Data da última atualização: 	09/11/2017	
Autoria: 	SANTOS, C. A. F.; SIMON, P. W.	
Afiliação: 	CARLOS ANTONIO FERNANDES SANTOS, CPATSA.	
Título: 	Estimation of heritabilities and gene number in the production of provitamin A in carrots.	
Ano de publicação: 	2002	
Fonte/Imprenta: 	Horticultura Brasileira, Brasília, DF, v. 20, n. 2, jul. 2002.	
Descrição Física: 	1 CD-ROM.	
Idioma: 	Inglês	
Notas: 	Suplemento 2. Edição do 42 Congresso Brasileiro de Olericultura; 11 Congresso Latino Americano de Horticultura, Uberlândia, jul. 2002.	
Conteúdo: 	Broad sense heritabilities and estimates of the number of factors or genes involved in the productjon of phytoene, -carotene, -carotene, a-carotene, Iycopene and total carotenoids were estimated in two different crosses of carrot (Daucus carota L.) with different backgrounds. F2 plants segregating for absence of a-carotene were identified in the cross B493 x QAL. HPLC chromatograms revealed that most of the increase of total carotenoids in high intensity mass selection (HCM), cycle 13, was due to jncrease of a-carotene content than {3-carotene. Broad sense heritabilities values were around or greater than 50% for {3- carotene, -carotene, Iycopene, phytoene and total carotenoid and around 35% for a- carotene in the cross Brasilia x HCM. In the cross orange x white the heritabifities were around or greater than 90%. The estimated number of factors was 4 for a-carotene, 3 for f3- carotene and total carotenes and one for -carotene, Iycopene and phytoene in the orange x dark orange cross, and 4 for a-carotene, 1-2 for Iycopene and total carotenes and 1 for the other carotenes in the orange x white cross.	
Palavras-Chave: 	HPLC; Melhoramento genético.	
Thesagro: 	Cenoura; Daucus Carota; Gene; Vitamina A.	
Thesaurus Nal: 	Carrots; genes; vitamin A.	
Categoria do assunto: 	G Melhoramento Genético	
URL: 	http://ainfo.cnptia.embrapa.br/digital/bitstream/CPATSA/24840/1/OPB763.pdf	
Registro original: 	Embrapa Semiárido (CPATSA)	
Exemplares: 	CPATSA - (24840-1) - UPC - AA - CD - 101 -  -  - DIS