Divergência genética entre progênies de maracujazeiro- amarelo com base em características das plântulas

Negreiros, Jacson Rondinelli da Silva; Alexandre, Rodrigo Sobreira; Alvares, V. de S.; Bruckner, Cláudio Horst; Cruz, Cosme Damião

doi:10.1590/s0100-29452008000100036

Cited by 24 publications

(22 citation statements)

References 4 publications

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“…When genetic diversity is studied using the canonical variables method, the main aim is to identify similar genotypes in twoor three-dimensional scatter plots, which makes it easier to simplify the interpretation of the results (NEGREIROS et al, 2008). In this paper, the analysis using the canonical variables method significantly represented all of the genetic diversity existing between the genotypes in a two-dimensional chart.…”

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confidence: 99%

GENETIC DIVERSITY AMONG Calotropis procera (Aiton) WT Aiton GENOTYPES ACCORDING TO SEED PHYSIOLOGICAL QUALITY

et al. 2017

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-Characterizing genetic diversity based on evaluations involving germination and seed vigor, is a fundamental stage in starting the development of a cultivation system for Calotropis procera. Thus, this study aimed to estimate genetic diversity among 35 C. procera genotypes based on germination and vigor of seeds stored for 1 year. The genotypes, which originated from areas in Paraíba (Brazil), where they occur naturally, were collected and stored in March 2014. In order to evaluate the physiological potential of the seeds, two experiments were conducted between March and April 2015. The first involved a propagation test conducted in a germination chamber, while the second involved an emergence test in washed sand, performed in polyethylene trays in a screened environment under uncontrolled conditions. In both experiments, an entirely randomized design was used, with four repetitions of 25 seeds per genotype. The characteristics evaluated were germination, average daily germination, daily germination speed, the speed of germination index, the plantlet vigor index, emergence, the speed of emergence index, total length, and total dry mass. The results showed that genetic variability exists among the C. procera genotypes for variables involving germination and vigor of seeds stored for 1 year. Also, emergence, total dry plantlet mass, and germination characteristics contribute most to the genetic divergence among C. procera genotypes.

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confidence: 99%

GENETIC DIVERSITY AMONG Calotropis procera (Aiton) WT Aiton GENOTYPES ACCORDING TO SEED PHYSIOLOGICAL QUALITY

et al. 2017

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“…The same did not occur in the studies of Negreiros et al (2008), which, working with genetic diversity among yellow passion fruit progenies based on seed characteristics, observed that the graphic dispersion by means of Canonic Variables presented behavior similar to the Tocher grouping.…”

Section: Resultsmentioning

confidence: 74%

Genetic Diversity of Passiflora Accessions Based on Morphophysiological Seed Descriptors

Marostega

Araújo

Luz³

et al. 2017

Rev. Bras. Frutic.

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-The aim of this work was to estimate the genetic divergence among Passiflora accessions based on morphophysiological seed characteristics. Accessions were distributed in a completely randomized design, with four replicates of 25 seeds. Data were submitted to analysis of variance and the means grouped by the Scott-Knott method. The genetic diversity was studied according to the Tocher and UPGMA grouping method based on the Mahalanobis distance (D 2 ) and Canonical Variables. In the cluster analyzes, four groups were formed by the UPGMA and Canonical Variables methods. In the Tocher Optimization method, seven groups were formed. of P. eichleriana, P. suberosa, P. edulis and P. foetida accessions presented the best results for the seed characteristics under study, being indicated for interspecific crosses aiming the selection of materials that present less dormancy and with more vigorous seeds.

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“…bras., Brasília, v.52, n.8, p.607-614, ago. 2017 DOI: 10.1590/S0100-204X2017000800006 germination chamber (Brasil, 2009); first germination count, evaluated together with the germination test, for which normal seedlings were recorded at 14 days; accelerated aging, in which the seeds were placed on an aluminum screen, in a transparent plastic box, with 40 mL of water, where they remained for 48 hours, at 40ºC, in a germination chamber (Larré et al, 2007), before being subjected to the same methodology of the germination test, for which normal seedlings were recorded at 28 days (Brasil, 2009); first count of the accelerated aging test, for which the normal seedlings were counted at 14 days; seedling size, by using ten seedlings located at the top row of the paper roll at the end of the germination test (Negreiros et al, 2008); rootlet size, obtained from the measurement of the rootlets of ten seedlings located at the top row of the roll at the end of the germination test (Negreiros et al, 2008); and germination rate index, for which the number of normal seedlings was recorded every four days (Maguire, 1962). The canonical correlation was used to estimate the maximum correlation of the linear combinations (Cruz et al, 2012) between production traits (set 1: productivity, pulp mass, fruit mass, and number of fruits per plant), seed morphological traits (set 2: seed length/width ratio, seed thickness, and 1,000 seed weight), and seed physiological traits (set 3: germination potential, first germination count, first count of the accelerated aging test, accelerated aging, seedling size, rootlet size, and germination rate index).…”

Section: Methodsmentioning

confidence: 99%

Contribution of production and seed variables to the genetic divergence in passion fruit under different nutrient availabilities

Rodrigues

Viana

Vieira

et al. 2017

Pesq. agropec. bras.

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-The objective of this work was to evaluate the relative contribution of variables related to fruit production and to seed morphophysiological characteristics to the genetic divergence in passion fruit (Passiflora edulis) progenies, aiming at selecting progenies potentially responsive to fertilization. Ten progenies were evaluated under conditions of low (50% of the recommended dose of fertilizers) and high soil fertility (dose 50% higher than the recommended one), regarding variable sets related to production and to the morphological and physiological characteristics of seeds. The association between these sets was determined by the canonical correlation analysis and by the nearest-neighbor clustering method. The nutritional environments interfered in the relative contribution of the variables to the genetic divergence of the progenies. The accelerated aging test of seeds -from the set of seed physiological quality -did not contribute significantly to the selection of genotypes responsive to soil fertilization. The most responsive progenies to the increased availability of nutrients were grouped according to the production variables that were evaluated under high soil fertility. Irrespectively of the evaluated environment, the set of production variables is the one that contributes more expressively to the identification of the genetic divergence of passion fruit progenies.Index terms: Passiflora edulis, canonical analysis, cluster analysis, fruit quality, responsiveness to fertilization, seed physiological quality. Contribuição de variáveis de produção e de semente para a divergência genética em maracujazeiro-azedo sob diferentes disponibilidades de nutrientesResumo -O objetivo deste trabalho foi avaliar a contribuição relativa de variáveis relacionadas à produção de frutos e a características morfofisiológicas das sementes para a divergência genética em progênies de maracujazeiro-azedo (Passiflora edulis), com vistas à seleção de progênies potencialmente responsivas à fertilização. Dez progênies foram avaliadas em condições de baixa (50% da dose recomendada de fertilizantes) e alta fertilidade do solo (dose 50% superior à recomendada), quanto a conjuntos de variáveis de produção e de características morfológicas e fisiológicas das sementes. A associação entre esses conjuntos foi determinada pela análise de correlação canônica e pelo método de agrupamento do vizinho mais próximo. Os ambientes nutricionais interferiram na contribuição relativa das variáveis para a divergência genética das progênies. O teste de envelhecimento acelerado das sementes -do conjunto de variáveis de qualidade fisiológica -não contribuiu significativamente para a seleção de genótipos responsivos à adubação. As progênies mais responsivas ao aumento da disponibilidade de nutrientes foram agrupadas de acordo com as variáveis de produção avaliadas em condições de alta fertilidade do solo. Independentemente do ambiente avaliado, o conjunto de variáveis de produção é o que mais expressivamente contribui para a identificação da diver...

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Divergência genética entre progênies de maracujazeiro- amarelo com base em características das plântulas

Cited by 24 publications

References 4 publications

GENETIC DIVERSITY AMONG Calotropis procera (Aiton) WT Aiton GENOTYPES ACCORDING TO SEED PHYSIOLOGICAL QUALITY

GENETIC DIVERSITY AMONG Calotropis procera (Aiton) WT Aiton GENOTYPES ACCORDING TO SEED PHYSIOLOGICAL QUALITY

Genetic Diversity of Passiflora Accessions Based on Morphophysiological Seed Descriptors

Contribution of production and seed variables to the genetic divergence in passion fruit under different nutrient availabilities

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