Full text in pdf format

Selection of Hevea mother trees adapted to unpredictable annual climatic variability

Paulo de Souza Gonçalves^I; Mário Cardoso^I; Ivan Cavalin Ignácio dos Santos^I; Antônio Lúcio Mello Martins^II; Altino Aldo Ortolani^III; Carlos Augusto Colombo^I

^IPrograma Seringueira, Divisão de Plantas Industriais (DPI), Instituto Agronômico de Campinas (IAC), Caixa Postal 28, 13100 Campinas, SP, Brasil. Send correspondence to P.S.G.
^IIEstação Experimental de Pindorama, Caixa Postal 24, 15830 Pindorama, SP, Brasil
^IIISeção de Climatologia Agricola (IAC), Caixa Postal 28, 13020 Campinas, SP, Brasil

ABSTRACT

Phenotypic stability of yield was estimated from nineteen pre-selected fifteen year old serial Pind mother rubber trees (Hevea brasiliensis Muell. Arg.). Several environments were represented by annual average yielding. The linear Genotype x Year interaction component for yield was significant and predictable. This indicated that the performance of genotypes over years for this trait could be predicted. The nonlinear component of Genotype x Year was significant. Three genotypes (Pind 039, Pind 103 and Pind 274) were found to be stable, though only Pind 103 gave above average yields. This genotype could be utilized in a breeding programme to incorporate stability into commercial genotypes.

Keywords: Hevea.

REFERENCES

Becker, H. (1981). Correlations among some statistical measures of phenotypic stability. Euphytica 30: 835-840.

Breeze, E.L. (1969). The measurement and significance of genotypes-environment interactions in grasses. Heredity 24: 27-44.

Chhina, B.S. and Phull, (1988). Stability for quality in sorghum. Indian J. Genet. 6: 36-40.

Clair, J.B. St. and Kleinschmit, J. (1986). Genotype-environment interaction and stability in ten-year height growth of Norway Spruce clones (Picea abies Karts). Silvae Genetica 35: 177-1861.

Dijkman, M.J. (1951). Hevea thirty years of research in the Far East. University of Miami, Florida, 329 p.

Eberhart, A.A. and Russell, W.A. (1966). Stability parameters for comparing varieties. Crop. Sci. 6: 36-40.

Gama, E.E.G. and Hallawer, A.R. (1980). Stability of hibrids produced from selected and unelected lines of lines of maize. Crop. Sci. 20: 623-626.

Gonçalves, P. de S., Cardoso, M. and Bortoletto, N. (1989). Redução do ciclo de melhoramento e seleção na obtenção de cultivares de seringueira. O. Agronômico 40: 112-130.

Jayasekera, N.E.M. (1983). A basis for selecting Hevea clones stable to unpredictable agro-climatic variability. Silvae Genetica 32: 5-6.

Jayasekera, N.E.M., Samaranayake, P. and Karunasekera, K.B. (1977). Initial studies on the nature of environment interactions in some Hevea cultivares. Jl. Rubb. Res. Inst. Sri-Lanka 54: 33-42.

Kalil Filho, A.N. (1982). Potencial de produtividade e estabilidade fenotipica na caracterização de clones de seringueira (Hevea spp.). Master's Thesis. ESALQ, USP, Piracicaba.

Lin, C.S., Binns, M.R. and Lefkovitch, L.P. (1986). Stability analysis: Where do we stand? Crop. Sci. 26: 894-900.

Nayeem, K.A. and Bapt, D.R. (1986). Phenotypic stability for protein, lysine and sugars in grain sorghum. Indian .1. Genet. 46: 439-448.

Ortolan, A.A. (1985). Aptidão climática para cultura da seringueira em Minas Gerais. Informe Agropecuário 11: 8-12.

Pushparajah, E. (1980). Differential reaction of clones to soils and nutrient status. In: Hevea Breeding Courses. Lecture notes. RRIM, Kuala Lumpur. pp. 9.

Pushparajah, E. (1983). Problems and potentials for establishing Hevea under difficult environmental conditions. Planter 50: 242-251.

Tripathi, B.K., Gill, S.S. and Misra, G.P. (1987). Genotype-environment interaction and stability analysis in sugarcane (Sacharum spp. hybrids). Indian J. Genet. 47: 241-274.

Westcott, B. (1986). Some methods of analysing genotype-environment interaction. Heredity 56: 243-253. Yates, F. and Cochran, W.G. (1938). The analysis of groups of experiments. J. Agric. Sci. 28: 556-580.