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vol.28 número4TAMANHO DE PARCELA E NÚMERO DE REPETIÇÕES PARA MAMONEIRA EM DIFERENTES ESPAÇAMENTOS ENTRE PLANTASTAMANHO ÓTIMO DE PARCELA PARA A CULTURA DE GIRASSOL EM TRÊS ARRANJOS ESPACIAIS DE PLANTAS índice de autoresíndice de assuntospesquisa de artigos
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Revista Caatinga

versão impressa ISSN 0100-316Xversão On-line ISSN 1983-2125

Resumo

MACIEL, GABRIEL MASCARENHAS; SILVA, ERNANI CLARETE DA  e  FERNANDES, MARCO AURÉLIO ROCHA. DWARFISM OCCURRENCE IN TOMATO PLANT TYPE GRAPE. Rev. Caatinga [online]. 2015, vol.28, n.4, pp.259-264. ISSN 0100-316X.  http://dx.doi.org/10.1590/1983-21252015v28n429rc.

The phenotypic manifestations of genetic knowledge of important agronomic traits in plants is an activity of great importance, whose results are widely used in plant breeding. The objective was to study the type of genetic segregation that occurs when crossing a dwarf genotype versus indeterminate growth habit genotype. Their plant was found growing spontaneously in Piracicaba (SP), on-site disposal of fruits per tomatoes producers along with normal plants. Seeds of both plants were harvested separately for baseline and coded as follows: a plant with a normal phenotype (FN) and plant with atypical phenotype with characteristics of dwarfism (FA). The methodology consisted of biparental and reciprocal backcrosses of the F1 to the parent FA and obtained the F2 generation. The data derived from the plant count populations obtained (F1, F2 and backcrosses) were tested using the χ2 according to the expected frequency and observed the normal phenotype (FN) and plant with atypical phenotype with characteristics of dwarfism (FA), under the hypothesis Mendelian segregation 3:1, obtained by monogenic inheritance. From the results, it can be concluded that the phenotype observed in the plant in this study is recessive genetic origin can be inserted into other plants by crossing.

Palavras-chave : Solanum lycopersicum L; Gene d (Dwarf); Inheritance; Allele; Mutation..

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