Divergência genética entre progênies de pupunheira quanto a caracteres de palmito

Negreiros, Jacson Rondinelli da Silva; Bergo, C. L.; Miqueloni, Daniela Popim; Lunz, Aureny Maria Pereira

doi:10.1590/s0100-204x2013000500005

Cited by 6 publications

(3 citation statements)

References 13 publications

(15 reference statements)

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“…This constant structure, through the formation of group coincidence in the utilization of complementary methods for morpho-agronomic characteristics, generates greater confidence in the results (Sudré et al, 2005;Oliveira, Ferreira, & Santos, 2007;Negreiros, Bergo, Miqueloni, & Lunz, 2013). Thus, the BRB AB and BRB AT populations that had to be classified as one group (Group 4), with the Tocher method, were classified by canonical variables within group III, together with the BRB EV, BRB ON and IAB populations.…”

Section: Discussionmentioning

confidence: 99%

Genetic Divergence among Camu-Camu Plant Populations Based on the Initial Characteristics of the Plants

Lozano¹,

Chagas²,

Smiderle³

et al. 2016

JAS

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The objective in the present work was to evaluate the genetic diversity among 15 indigenous populations of camu-camu plants, identifying important characteristics in the evaluation of genetic divergence, based on the initial characteristics of the seedlings. Seeds extracted from fruits deriving from fifteen indigenous populations of camu-camu were collected. The experimental design was entirely random, with fifteen treatments (populations), and fifteen repetitions (each sub-sample), considering 30 seeds per subsample as an experimental unit. At 40 days after sowing the following were evaluated: the percentage of emergence, the index of emergence velocity, the average time of germination, the height of the seedling and the number of leaves. The data obtained was submitted to variance analysis, and the averages were grouped by the Scott and Knott (1974) test. The genetic diversity was studied according to the Tocher grouping method, based on the Mahalanobis distance (D 2 ii ) and canonical variables. The fifteen populations are divergent among themselves and the Rio Branco Estirão do Veado, Rio Branco Onofre and Igarapé Agua Boa populations are indicated to have hybridization with other populations due to the high divergence, as well as the rates of emergence and vigor of the seedlings. The height of the seedlings, percentage and speed of emergence, are those that most indicate genetic divergence. The measuring techniques of genetic divergence, canonical variables Mahalanobis distances are useful and corroborating in the evaluation of genetic divergence of the camu-camu plant.

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Section: Discussionmentioning

confidence: 99%

Genetic Divergence among Camu-Camu Plant Populations Based on the Initial Characteristics of the Plants

Lozano¹,

Chagas²,

Smiderle³

et al. 2016

JAS

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“…Negreiros, Bergo, Miqueloni, and Lunz (2013) found 26 groups when they analyzed 100 progenies of peach palm; they also reported that they found a strong genetic divergence using Tocher's method. Table 5.…”

Section: Hcmentioning

confidence: 99%

<b>Genetic variability and progeny selection of peach palm via mixed models (REML / BLUP)

et al. 2017

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ABSTRACT. Heart of palm harvesting and exploitation has reduced the natural reserves of açaí and juçara; hence, the peach palm is an excellent option as source of heart of palm that can reduce the pressure on these two species. The peach palm has high tillering and no post-harvest oxidation. An experiment in a randomized block design with 72 progenies of peach palm, 36 replications and a single tree plot was performed for five years at the experimental field of Embrapa in the Western Amazon. Genetic parameters were estimated using two mixed models, one based on progeny means and the second on joint information from crops. A repeatability analysis, genotype selection, and progeny selection were performed; the Mulamba and Mock selection index was determined; and Tocher's clustering method was applied. The repeatability analysis revealed the existence of genetic variability, low repeatability, which ranged from 0.3307 to 0.6698 for five years. The analysis performed through the progeny means showed a heritability that varied from 51% to 23% for in all variables; the clustering revealed two groups. The progeny selection should be the main selection strategy, and crosses of superior progenies of different groups should be emphasized.Keywords: heart of palm, perennial breeding, amazon.Variabilidade genética e seleção de progênies de pupunheira via modelos mistos (REML/BLUP) RESUMO. A coleta de palmito via extrativismo vem reduzindo as reservas naturais de açaí e juçara, sendo o palmito de pupunha uma excelente opção para obtenção de palmito plantado, pois além de diminuir a pressão da exploração extrativista sobre essas duas espécies, possui alto grau de perfilhamento e não apresenta oxidação pós-colheita. Foram testadas 72 progênies de pupunheira, em cinco anos, no campo experimental da Embrapa Amazônia Ocidental, em delineamento blocos casualizados com 36 repetições e uma planta por parcela. Os parâmetros genéticos foram estimados através de modelos mistos (REML/BLUP), foram também realizadas análises de repetibilidade, seleção de progênies, seleção de indivíduos por meio de BLUP individual, índice de seleção Mulamba-Rank e agrupamento de otimização de Tocher. As análises realizadas revelaram a existência de variabilidade genética, baixa repetibilidade, variando de 0,3307 até 0,6698 para cinco anos e herdabilidades variando de 51% a 23% para seleção de progênies nas variáveis analisadas, o agrupamento revelou dois grupos distintos. A seleção de progênies deve ser a principal estratégia de seleção e cruzamentos entre progênies superiores de grupos diferentes devem ser enfatizados.Palavras-chave: palmito, melhoramento de perenes, amazônia.

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“…Studies have estimated genetic parameters of several species of palma of commercial interest (FARIAS NETO et al, 2004;OLIVEIRA & MOURA, 2010;MANFIO et al, 2011), including peach palm (FARIAS NETO & RESENDE, 2001;FARIAS NETO et al, 2013;KHALIL FILHO & RESENDE, 2011, PADILHA et al, 2003. In the state of Acre, experiments with peach palm progenies are in progress (BERGO et al, 2013, NEGREIROS et al, 2013, which has provided the basis for selection of superior plants with consequent improvement of species. The objective of this study was to estimate genetic parameters for characters of palm heart production in half-sibs progenies of peach palm in the Brazilian Western Amazon.…”

Section: Introductionmentioning

confidence: 99%

Genetic parameters to production characters of palm heart in half-sibs progenies of palm peach

Bergo

Miqueloni

Pedrozo³

et al. 2019

Cienc. Rural

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The peach palm (Bactris gasipaes) is a palm tree that produces palm heart originated of Amazonia with economic, social and environmental sustainability. To obtain improved cultivars it is necessary the evaluation and selection of genotypes with characteristics that support producers, manufacturing and consumers. In this context, the objective of this study was to estimate genetic parameters for palm heart production traits of peach palm considering half sibs progenies. Twenty progenies of Putumayo macrocarpa race were evaluated in seven cultivation cycles. The experiment was designed in complete randomized blocks, with 40 repetitions and one plant per plot. The genetic parameters were estimated by REML/BLUP methodology. Low genetic variability was observed in the population, possibly due to the narrow genetic base from original population. However, considering the significant genetic effect and the progeny mean heritability, the selection performed between progenies is more efficient than individual selection. The high number of measurements required for most of the evaluated characters becomes impractical in peach palm breeding programs. The number of palm heart per plant can be used to perform indirect selection for total production of palm heart.

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Divergência genética entre progênies de pupunheira quanto a caracteres de palmito

Cited by 6 publications

References 13 publications

Genetic Divergence among Camu-Camu Plant Populations Based on the Initial Characteristics of the Plants

Genetic Divergence among Camu-Camu Plant Populations Based on the Initial Characteristics of the Plants

<b>Genetic variability and progeny selection of peach palm via mixed models (REML / BLUP)

Genetic parameters to production characters of palm heart in half-sibs progenies of palm peach

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