Data/hora: 09/06/2024 06:24:23

Biblioteca(s): 	Embrapa Soja.	
Data corrente: 	26/10/1992	
Data da última atualização: 	29/10/2004	
Autoria: 	TYAGI, A. P.	
Afiliação: 	Department of Crop Science, University of Nairobi, P.O.Box 30197, Nairobi, Kenya.	
Título: 	Association and path analysis of yield components and oil percentage in sunflower (Helianthus annuus L.).	
Ano de publicação: 	1985	
Fonte/Imprenta: 	In: CONFERENCIA INTERNACIONAL DE GIRASOL, 11., 1985, Mar del Plata. Actas. Mar del Plata : ASAGIR/ISA, 1985.	
Volume: 	t.2	
Páginas: 	p.807-812.	
Idioma: 	Inglês	
Conteúdo: 	The study was undertaken primarily to determine the nature and magnitude of association among yield components and oil percentage in sunflower cultivar `Issanka'. The character studied were (i) seed yield (ii) plant height (iii) head diameter (iv) nr. of seeds per head (v) 100 seed weith and (vi) oil percentage. Genotypic correlation coefficients were higher than the corresponding phenotupic correlation coeficients in most of the traits indicating the lack of environmental association among the characters.Yield was found positively associated with plant height, nr of seeds per head, head diameter and 100 seed weigth but negatively - correlated with oil percentage. Path coefficient analysis showed that plant height had a negative direct effect on yield and up to a large extent contributed indirectly via head diameter. head diameter had highest direct effect on yield. Although the correlation between seed yield and oil percentage was negative, however, path coefficient analysis revealed that later had a positive direct effect on the former suggesting to comprimise between these two most important economic traits. Negative association, however, could be dissipated/minimized/broken using intermating and/or mutagenesis provided linkage between seed yield and seed oil percentage is not too tight, and a simultaneous improvement in seed yield and oil percentage could be achieved.	
Palavras-Chave: 	Correlacao; Kenia; Sunflower.	
Thesagro: 	Genética; Girassol; Helianthus Annuus; Melhoramento.	
Thesaurus Nal: 	breeding; correlation; genetics; Kenya.	
Categoria do assunto: 	--	
Registro original: 	Embrapa Soja (CNPSO)