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|metadata.artigo.dc.title:||Interaction of the mutant genes B, og c , hp and t in the coloring of tomato fruit|
|metadata.artigo.dc.creator:||Andrade, Thiago Matos|
Maluf, Wilson Roberto
Oliveira, Celso Mattes de
Gomes, Luiz Antônio Augusto
Santos, Daniela Costa
Carvalho, Regis de Castro
Gonçalves, Ranoel José de Sousa
Gonçalves Neto, Álvaro Carlos
|metadata.artigo.dc.identifier.citation:||ANDRADE, T. M. et al. Interaction of the mutant genes B, og c , hp and t in the coloring of tomato fruit. Euphytica, [S.l.], v. 205, n. 3, p. 773-783, Oct. 2015. DOI: 10.1007/s10681-015-1405-4.|
|metadata.artigo.dc.description.abstract:||The aim of this study was to assess the effect of the mutant genes B, og c , hp, and t on the fruit color of tomato genotypes. Two tomato lines (TOM-498 and TOM-499) with BB genotype composition (high β-carotene homozygous) were used in hybrid combinations with 7 tomato lines with different genotype compositions in loci og c , hp, or t—Floradade, TOM-596, TOM-544, NC-8276, NC-2Y, Florida 7775, and Florida 7781. A randomized complete block design with 24 treatments and four replications was used. Both external and internal fruit color were assessed with a Minolta CR-400 colorimeter in the CIE L*, a* and b* mode. Hue and chroma readings were taken at four different points (epidermis, pericarp, placenta, and columella) of the fruit. For high β-carotene heterozygous hybrids B + /B, hue angle indicated an orange color (since these hybrids did not come to equal the genotypes of normal coloring, red), even when genes promoting lycopene synthesis (og c , hp) were deployed as heterozygous genotypes. Fruit of high β-carotene heterozygous hybrids, without t, og c , or hp, had chroma values similar to fruit of homozygous high β-carotene lines. The use of the og c allele in heterozygosity led to higher chroma values in high β-carotene heterozygous genotypes in relation to the values found in high β-carotene heterozygous genotypes not bearing the og c gene. The og c homozygous lines had hue values that did not differ from those in normal genotypes in the epidermis and pericarp, but showed a significant shift towards red in the placenta and in the columella.|
|Appears in Collections:||DAG - Artigos publicados em periódicos|
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