Morphological characterization of leaf, flower, fruit and seed traits among Brazilian Theobroma L. species

Santos, Ronaldo Carvalho; Pires, J.L.; Corrêa, Ronan Xavier

doi:10.1007/s10722-011-9685-6

Cited by 58 publications

(43 citation statements)

References 49 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Em trabalhos realizados com plantas do gênero Theobroma obtidas a partir do banco de germoplasma do Centro de Pesquisa do Cacau (CEPEC), Santos et al (2012) observaram médias de 512,79 g para peso total dos frutos, 15,89 cm para comprimento e 8,86 cm para o diâmetro de fruto.…”

Section: Resultsunclassified

Caracterização de frutos de clones de cacaueiros na região litorânea de São Mateus, ES

Alexandre

Chagas

Marques

et al. 2015

Rev. bras. eng. agríc. ambient.

View full text Add to dashboard Cite

R E S U M OObjetivou-se, com trabalho, avaliar a pós-colheita de clones de cacaueiros produzidos na região litorânea do norte do Espírito Santo, quanto às características físicas e químicas de seus frutos. As caracterizações físicas e químicas foram realizadas a partir de 10 frutos referentes a sete clones de cacau (CCN 10, CCN 51, CEPEC 2002, PH 15, PH 16, OS 1319 e TSH 1188. Foram avaliados o peso total, diâmetro e comprimento do fruto, peso da casca, espessura do sulco e da região mais espessa da casca, número, peso seco, largura, espessura e comprimento das amêndoas, sólidos solúveis totais (SST), acidez total titulável (ATT), pH da polpa e relação SST/ATT. As médias obtidas foram agrupadas pelo teste de Scott-Knott a 0,05 de probabilidade; em seguida, procedeu-se à análise da divergência genética. Foi observada a presença de divergência genética entre as populações estudadas ocorrendo a formação de três grupos pelo método de Tocher e dois grupos quando aplicado o Unweighted Pair-Group Method Average (UPGMA). Os clones CCN 10 e CCN 51 são os mais indicados para a produção de amêndoas e as variáveis, referentes ao tamanho do fruto, comprimento e diâmetro, foram as que mais contribuíram na diversidade genética dos genótipos.

show abstract

Section: Resultsunclassified

Caracterização de frutos de clones de cacaueiros na região litorânea de São Mateus, ES

Alexandre

Chagas

Marques

et al. 2015

Rev. bras. eng. agríc. ambient.

View full text Add to dashboard Cite

show abstract

“…Several characters have shown high variability, such as those related to the leaf, fruit, seed, flower, plant architecture, selfincompatibility, and production (Almeida et al 2009;Santos et al 2011;Alexandre et al 2015).…”

Section: Introductionmentioning

confidence: 99%

Phenotypic and genotypic characterization and compatibility among genotypes to select elite clones of cupuassu

Alves¹,

Silva²,

Albuquerque³

et al. 2017

Acta Amaz.

View full text Add to dashboard Cite

The expansion of the genetic base of cultivated materials is an ongoing activity of the cupuassu (Theobroma grandiflorum) breeding program. However, the parents involved need to be genotypically and phenotypically characterized to ensure compatibility of crossings, as well as to assist in the selection of more promising individuals for hybridization. This study aimed to identify and select T. grandiflorum clones that are compatible and genetically divergent using tools such as the estimates of genotypic, phenotypic, and combined distances, as well as the compatibility rates among clones. The genetic distance analysis of the clones was performed with 14 heterologous microsatellite primers of cocoa (Theobroma cacao) that amplify the DNA of cupuassu. Phenotypic characterization was based on 14 variables related to fruit production. The joint dissimilarity matrix was obtained by means of the sum of the phenotypic and molecular dissimilarity matrices. The intra-and inter-clonal compatibility was estimated through controlled crossings. A low correlation was noted between the dissimilarity matrices based on the molecular and agronomic data. As for compatibility, all clones were self-incompatible, with different compatibility rates when crossed. The compatibility index was strongly influenced by the degree of relationship of the clones. It was possible to identify and select the most promising sets of cupuassu clones to be used in breeding programs, despite their genetic relationship. KEYWORDS: microsatellites, tropical fruit, diversity, plant breeding, Theobroma grandiflorum Caracterização fenotípica, genotípica e compatibilidade entre genótipos para seleção de clones elite de cupuaçuzeiro RESUMO A ampliação da base genética dos materiais de cultivo é trabalho contínuo do programa de melhoramento genético do cupuaçuzeiro (Theobroma grandiflorum). Há necessidade, entretanto, que os parentais envolvidos estejam caracterizados fenotípica e genotipicamente, para auxiliar na escolha dos indivíduos que serão hibridizados, bem como para garantir os mecanismos de rastreabilidade e proteção das cultivares. Este estudo teve como objetivo identificar e selecionar clones de cupuaçuzeiro inter-compatíveis e geneticamente divergentes, utilizando como ferramentas as distâncias genotípica, fenotípica e combinada mistas, assim como as taxas de compatibilidade entre os clones. Estimativas das distâncias genéticas entre os clones foram realizadas com base em 14 iniciadores microssatélites heterólogos de cacaueiro (Theobroma cacao) que amplificam o DNA do cupuaçuzeiro. Para a caracterização fenotípica foram empregadas 14 variáveis relacionadas à produção de frutos. A matriz de dissimilaridade conjunta foi obtida por meio da soma das matrizes de dissimilaridade fenotípica e molecular. A compatibilidade intra e inter-clonal foi estimada através de cruzamentos controlados. Houve uma baixa correlação entre as matrizes de dissimilaridade com base nos dados moleculares e agronômicos. Quanto à compatibilidade, todos os clones foram auto-...

show abstract

“…Many studies have registered the presence of Theobroma speciosum and Theobroma subincanum in the Amazon biome (Herault et al, 2010;Amaral et al, 2011;Santos et al, 2012 andMarchant et al, 2002). Souza et al (2011), in a study with T. subincanum in Amapá state, sampled 37 trees in an area of approximately 1.1 ha, with a density of 33.63 ind.ha -1 and a basal area of 3.07 m².ha -1 , higher results than those found in this study for the species (10.62 ind.ha -1 and 0.17 m².ha -1 ).…”

Section: Discussionmentioning

confidence: 99%

SPATIAL STRUCTURE OF Theobroma subincanumMart. AND Theobromaspeciosum Willd. ex Spreng.IN THE PARQUE NACIONAL DO JURUENA, MATO GROSSO STATE, BRAZIL

et al. 2017

View full text Add to dashboard Cite

Analysis of the spatial distribution is a very useful tool to understand the ecological behavior of the species in that it provides information that underlies management strategies and influences the population structure. To study the horizontal structure of the species T. speciosum (Cacaui) and T. subincanum (Cupui) in the "Parque Nacional do Juruena", Mato Grosso state, a 200 x 160 m grid was implemented and divided into 40 adjacent 20 x 40 m subplots. All individuals of the species under study that had DBH > 1 cm were measured. The following parameters were analyzed: number of individuals, density, total height, basal area, diametric distribution, and spatial distribution. The research sampled 165 T. speciosum trees (51.56 ind.ha-1) and 34 T. subincanum (10.62 ind.ha-1), with an average diameter of 6.72 cm and 12.44 respectively, the T. speciosum individuals showed an aggregated distribution pattern, while the T. subincanum individuals presented a random pattern. The diametric distribution of T. speciosum followed an exponential distribution in a reverse-J shaped pattern, behavior expected for a forest environment with little anthropic pressure, while T. subincanum did not follow the same pattern, though the species demonstrated to be well established in the area, with significant number of individuals in all diameter classes, thus,the results indicate the importance of conservation areas established in order to safeguard the natural environment from the pressures of anthropic actions, and also the need for studies in the region of the Amazon biome.

show abstract

Morphological characterization of leaf, flower, fruit and seed traits among Brazilian Theobroma L. species

Cited by 58 publications

References 49 publications

Caracterização de frutos de clones de cacaueiros na região litorânea de São Mateus, ES

Caracterização de frutos de clones de cacaueiros na região litorânea de São Mateus, ES

Phenotypic and genotypic characterization and compatibility among genotypes to select elite clones of cupuassu

SPATIAL STRUCTURE OF Theobroma subincanumMart. AND Theobromaspeciosum Willd. ex Spreng.IN THE PARQUE NACIONAL DO JURUENA, MATO GROSSO STATE, BRAZIL

Contact Info

Product

Resources

About