Estimates of repeatability and path coefficients on grapes.

LEAO, P. C. de S.; COSTA, J. G. da

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Campo DC	Valor	Idioma
dc.contributor.author	LEAO, P. C. de S.	pt_BR
dc.contributor.author	COSTA, J. G. da	pt_BR
dc.date.accessioned	2015-09-30T09:50:17Z	-
dc.date.available	2015-09-30T09:50:17Z	-
dc.date.created	2003-12-09	pt_BR
dc.date.issued	2003	pt_BR
dc.identifier.citation	Crop Breeding and Applied Biotechnology, Londrina, v. 3, n. 3, p. 231-236 , 2003.	pt_BR
dc.identifier.uri	http://www.alice.cnptia.embrapa.br/alice/handle/doc/133683	pt_BR
dc.description	The objective of this study was to estimate the repeatability coefficient, the minimum number of evaluations top which a trait should be subjected and the effect of the inter-relationships of five charactersn grapevine (Vitis spp.) yield, aiming at getting useful information for breeding strategies of this fruit crop. Repeatability coefficients were estimated for the follwing characters: total soluble solids (TSS); total tritable acidity (TTA); TSS/TTA ratio; berry length, diameter and weight; bunch length, width and weight, and number and yield of bunches per plant on eleven seedless grape varieties in five yield cycles (1997 and 1998) in Petrolina-PE. The repeatibility estimates were obtained by the main components methods from the correlation matrix. The simple correlation coefficients were calculated and they were partitioned into direct and indirect effects by the path analysis. The estimated repeatibility coefficients ranged from 0,4750 to 0,8372 associated to the coefficients of determination from 81.9% to 96.26%. The traits TSS, TTA and bunch length presented low repeatibility coefficients, meaning a low regularity of performance from one measurement to another. The other characters showed regularity on the repetition of the behavior of the genotypes. The results of the path analysis showed that the studied variables satisfactorily explain the character yield per plant.	pt_BR
dc.language.iso	eng	eng
dc.rights	openAccess	eng
dc.subject	Uva de mesa	pt_BR
dc.subject	Melhoramento de planta	pt_BR
dc.subject	Correlação genética	pt_BR
dc.subject	Repetibilidade	pt_BR
dc.title	Estimates of repeatability and path coefficients on grapes.	pt_BR
dc.type	Artigo de periódico	pt_BR
dc.date.updated	2015-09-30T09:50:17Z	pt_BR
dc.subject.thesagro	Uva	pt_BR
dc.subject.thesagro	Vitis Vinifera	pt_BR
dc.subject.nalthesaurus	Grapes	pt_BR
riaa.ainfo.id	133683	pt_BR
riaa.ainfo.lastupdate	2015-09-29	pt_BR
dc.contributor.institution	PATRICIA COELHO DE SOUZA LEAO, CPATSA; JOÃO GOMES DA COSTA, CPATSA.	pt_BR
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