1 Bragantia Vol: 53(2):. DOI: 10.1590/S0006-87051994000200006

Estimativas de correlações fenotípicas, genotípicas e de ambiente entre sete caracteres morfoagronômicos em oito acessos de moranga

Seven morphological and agricultural traits were analysed in eight access of pumpkin (Cucurbita maxima Duchesne). They were subjected to a phenotypic, genotypic and environment correlations analysis. The genotypic estimates showed botter correlation results than the phenotypic and environmental estimates. Also indicated a moderated influence by the environment in the trait expression. All pairs of traits showed positive genotypic correlation (>0.75) with evidences that the selection aims the increase of traits average, and also it leads to an alteration in the average of the other traits in the same amount. The RAMA F traits (the lenght of the stem until the first female flower) and RAMA T (the lenght of the stem until the top) showed the highest genotypic correlation, while the minor magnitude in this correlation occurred between NS F (number of nodes in the stem until the first female flower) and COMP T (the median lenght of stem's internodes until the top).

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References
  1. ALMEIDA, A.H.B. Heterose e correlações em plantas braquíticas e normais de jerimum caboclo (Cucurbita maxima Duchesne). Viçosa 63p. Dissertação (Mestrado em Genética e Melhoramento) - UFV, 1988 , (1988) .
  2. FALCONER, D.S. Introdução à genética quantitativa, Trad. SILVA, M.A. & SILVA, J.C. Viçosa, UFV. Imprensa Universitária 279p , (1987) .
  3. GOPALAKRISHMAN, T.R.; GOPALAKRISHMAN, P.K. & PETER, K.V. Variability, heritability and correlation among some polygenic characters in pumpkin. Indian Journal of Agricultural Sciences, New Delhi, 50(12) , 925-930 (1980) .
  4. KEMPTHORNE, O. An introduction to genetic statistics. Ames, Iowa, State University Press 454p , (1973) .
  5. MATHER, W.B. Principles of quantitative genetics. Burgess Publishing Company 152p , (1965) .
  6. MOURA, V.M. Avaliação de progênies F2 derivadas de introduções braquítica e normais de moranga (Cucurbita maxima Duchesne). Viçosa 74p. Dissertação (Mestrado em Genética e Melhoramento) - UFV, 1989 , (1989) .
  7. ROBINSON, H.F.; COMSTOCK, R.E. & HARVEY, P.H. Genotypic and phenotypic correlations in corn and their implications in selection. Agronomy Journal, Madison 43, 282-287 (1951) .
  8. STEEL, R.G.D. & TORRIE, J.H. Principles and procedures of statistics. New York, McGraw Hill 481p , (1960) .
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