Data/hora: 15/06/2024 15:49:53

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