Textural changes of heterozygous tomatoes in the alcobaca loci

Textural changes of heterozygous tomatoes in the alcobaca loci

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Textural changes occurred during ripening of three pairs of plurilocular tomato's hybrids, nearing isogenics, excepting the alcobaca loci, were studied. The trial was carried out in Universidade Federal de Lavras (UFLA), MG, Brazil, with a randomized complete block design. The pairs of hybrids (Stevens x Flora Dade e Stevens x TOM-559; Piedmont x Flora Dade e Piedmont x TOM-559; NC-8276 x Flora Dade e NC-8276 x TOM-559) were evaluated in four stages of ripening (breaker, pink, light-red and red), in four replications. Hybrids whose common genitor was Flora Dade corresponded to the normal genotype (+/+), whereas the alcobaca heterozygous hybrids (+/alc) were originated from the common genitor TOM-559. Texture was not affected by the alcobaca allele in the predetermined stages of ripening. On the other hand, the solubilization percentage of pectic substances as well as the activity of pectinmethilesterase and polygalacturonase were influenced by the alcobaca allele which determined its contention. Tomato ripening, (+/+) and (+/alc), was characterized by intense softening associated with an increase in polygalacturonase activity and solubilization of pectic substances.

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Main Authors: Boas, Eduardo Valério de Barros Vilas, Chitarra, Adimilson Bosco, Maluf, Wilson Roberto, Chitarra, Maria Isabel Fernandes
Format: Digital revista
Language:por
Published: Pesquisa Agropecuaria Brasileira 2000
Online Access:https://seer.sct.embrapa.br/index.php/pab/article/view/5916
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spelling rev-pab-br-article-59162014-08-19T16:27:37Z Textural changes of heterozygous tomatoes in the alcobaca loci Modificações texturais de tomates heterozigotos no loco alcobaça Boas, Eduardo Valério de Barros Vilas Chitarra, Adimilson Bosco Maluf, Wilson Roberto Chitarra, Maria Isabel Fernandes Lycopersicon esculentum; breeding methods; enzimic activity; pectins; solubilizing; ripening; keeping quality Lycopersicon esculentum; métodos de melhoramento; atividade enzimática; pectinas; solubilização; amadurecimento; manutenção de qualidade Textural changes occurred during ripening of three pairs of plurilocular tomato's hybrids, nearing isogenics, excepting the alcobaca loci, were studied. The trial was carried out in Universidade Federal de Lavras (UFLA), MG, Brazil, with a randomized complete block design. The pairs of hybrids (Stevens x Flora Dade e Stevens x TOM-559; Piedmont x Flora Dade e Piedmont x TOM-559; NC-8276 x Flora Dade e NC-8276 x TOM-559) were evaluated in four stages of ripening (breaker, pink, light-red and red), in four replications. Hybrids whose common genitor was Flora Dade corresponded to the normal genotype (+/+), whereas the alcobaca heterozygous hybrids (+/alc) were originated from the common genitor TOM-559. Texture was not affected by the alcobaca allele in the predetermined stages of ripening. On the other hand, the solubilization percentage of pectic substances as well as the activity of pectinmethilesterase and polygalacturonase were influenced by the alcobaca allele which determined its contention. Tomato ripening, (+/+) and (+/alc), was characterized by intense softening associated with an increase in polygalacturonase activity and solubilization of pectic substances. Foram avaliadas as modificações ocorridas durante o amadurecimento de três pares de híbridos de tomates do grupo multilocular, quase isogênicos, à exceção do loco alcobaça. O experimento foi conduzido na Universidade Federal de Lavras, em delineamento em blocos casualizados. Os pares de híbridos (Stevens x Flora Dade e Stevens x TOM-559; Piedmont x Flora Dade e Piedmont x TOM-559; NC-8276 x Flora Dade e NC-8276 x TOM-559) foram avaliados em quatro estádios de amadurecimento (breaker, rosa, vermelho-claro e vermelho), em quatro repetições. Os híbridos cujo genitor comum foi Flora Dade corresponderam ao genótipo normal (+/+), enquanto os híbridos heterozigotos alcobaça (+/alc) foram provenientes do genitor comum TOM-559. A textura não foi afetada pelo alelo alcobaça nos estádios predeterminados de amadurecimento. Já a porcentagem de solubilização das substâncias pécticas, bem como a atividade das enzimas pectinametilesterase e poligalacturonase, foram influenciadas pelo alelo alcobaça, que determinou a sua contenção. O amadurecimento dos tomates (+/+) e (+/alc) foi marcado por intenso amaciamento, acompanhado por incremento na atividade da poligalacturonase e solubilização das substâncias pécticas. Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira 2000-07-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://seer.sct.embrapa.br/index.php/pab/article/view/5916 Pesquisa Agropecuaria Brasileira; v.35, n.7, jul. 2000; 1447-1453 Pesquisa Agropecuária Brasileira; v.35, n.7, jul. 2000; 1447-1453 1678-3921 0100-104x por https://seer.sct.embrapa.br/index.php/pab/article/view/5916/3020
institution EMBRAPA
collection OJS
country Brasil
countrycode BR
component Revista
access En linea
databasecode rev-pab-br
tag revista
region America del Sur
libraryname Sistema de bibliotecas de EMBRAPA
language por
format Digital
author Boas, Eduardo Valério de Barros Vilas
Chitarra, Adimilson Bosco
Maluf, Wilson Roberto
Chitarra, Maria Isabel Fernandes
spellingShingle Boas, Eduardo Valério de Barros Vilas
Chitarra, Adimilson Bosco
Maluf, Wilson Roberto
Chitarra, Maria Isabel Fernandes
Textural changes of heterozygous tomatoes in the alcobaca loci
author_facet Boas, Eduardo Valério de Barros Vilas
Chitarra, Adimilson Bosco
Maluf, Wilson Roberto
Chitarra, Maria Isabel Fernandes
author_sort Boas, Eduardo Valério de Barros Vilas
title Textural changes of heterozygous tomatoes in the alcobaca loci
title_short Textural changes of heterozygous tomatoes in the alcobaca loci
title_full Textural changes of heterozygous tomatoes in the alcobaca loci
title_fullStr Textural changes of heterozygous tomatoes in the alcobaca loci
title_full_unstemmed Textural changes of heterozygous tomatoes in the alcobaca loci
title_sort textural changes of heterozygous tomatoes in the alcobaca loci
description Textural changes occurred during ripening of three pairs of plurilocular tomato's hybrids, nearing isogenics, excepting the alcobaca loci, were studied. The trial was carried out in Universidade Federal de Lavras (UFLA), MG, Brazil, with a randomized complete block design. The pairs of hybrids (Stevens x Flora Dade e Stevens x TOM-559; Piedmont x Flora Dade e Piedmont x TOM-559; NC-8276 x Flora Dade e NC-8276 x TOM-559) were evaluated in four stages of ripening (breaker, pink, light-red and red), in four replications. Hybrids whose common genitor was Flora Dade corresponded to the normal genotype (+/+), whereas the alcobaca heterozygous hybrids (+/alc) were originated from the common genitor TOM-559. Texture was not affected by the alcobaca allele in the predetermined stages of ripening. On the other hand, the solubilization percentage of pectic substances as well as the activity of pectinmethilesterase and polygalacturonase were influenced by the alcobaca allele which determined its contention. Tomato ripening, (+/+) and (+/alc), was characterized by intense softening associated with an increase in polygalacturonase activity and solubilization of pectic substances.
publisher Pesquisa Agropecuaria Brasileira
publishDate 2000
url https://seer.sct.embrapa.br/index.php/pab/article/view/5916
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