Data/hora: 24/05/2024 02:21:11

Biblioteca(s): 	Embrapa Semiárido.	
Data corrente: 	30/11/2000	
Data da última atualização: 	05/05/2016	
Autoria: 	ALLEM, A. C.; ROA, A. C.; MENDES, R. A.; SALOMAO, A. N.; BURLE, M. L.; SECOND, G.; CARVALHO, P. C. L. de; CAVALCANTI, J.	
Afiliação: 	JOSIAS CAVALCANTI, CPATSA.	
Título: 	The primary gene pool of cassava (Manihot esculenta Crantz).	
Ano de publicação: 	2000	
Fonte/Imprenta: 	In: INTERNATIONAL SCIENTIFIC MEETING CASSAVA BIOTECHNOLOGY NETWORK, 4., 1998, Salvador. Cassava biotechnology: proceedings. Brasília, DF: EMBRAPA-CENARGEN: CBN, 2000.	
Páginas: 	P. 3-14.	
ISBN: 	85-87697-05-6	
Idioma: 	Inglês	
Conteúdo: 	A crop gene pool comprises three distinct categories of gene suppliers, primary, secondary, and tertiary gene pools. The primary gene pool (GP-1) is composed of gene reservoirs that cross easily with the domesticate and the crosses produce fertile offspring regularly. The secondary (GP-2) and tertiary (GP-3) gene pools comprise gene sources that cross with variable degrees of diffilculty with the crop species, this implies less close genetic distances. The GP-1 is further subdivided in cultivated and wild gene pools. The cultivated gene pool englobes commercial stocks of the crop besides indigenous landraces and folk varieties of the domesticate. The wild GP-1 of a crop comprises putative ancestors and closely related species that show a fair degree of fertile relationships with the domesticate. Two Douth American wild subspecies of cassava (M. flabellifolia and M. peruviana) are natural members of the wild GP-1 of the species. Another Brazilian species (M. pruinosa) is so close morphologically to the two wild subspecies of cassava that it may turn out another member of the wild GP-1 of the indigen. The GP-2 of cassava is more difficult to delimit as few species have been tested for genetic compatibility. Biosystematic crosses carried out between the crop and a number of wild species suggest a dozen of them as components of the GP-2, the majority are Brazilian species.	
Palavras-Chave: 	Biotecnology.	
Thesagro: 	Biotecnologia; Espécie; Mandioca; Manihot Esculenta; Taxonomia.	
Thesaurus Nal: 	Cassava.	
Categoria do assunto: 	Q Alimentos e Nutrição Humana	
URL: 	http://ainfo.cnptia.embrapa.br/digital/bitstream/item/142796/1/ID-8742-1.pdf	
Registro original: 	Embrapa Semiárido (CPATSA)	
Exemplares: 	CPATSA - (8742-1) - UPC - AA - PP - 633.682 - I61c -  - DIS