Dimensionamento amostral para avaliação de altura e diâmetro de mudas de nogueira-pecã

Filho, Alberto Cargnelutti; Poletto, Tales; Muniz, Marlove Fátima Brião; Baggiotto, Carine; Poletto, Igor; Fronza, Diniz

doi:10.1590/0103-8478cr20140411

Cited by 8 publications

(9 citation statements)

References 2 publications

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“…The fourth contribution was "Pecan Propagation: Seed Mass as a Reliable Tool for Seed Selection" by Poletto et al [32]. High-quality seedlings are essential in establishing healthy and productive orchards, and studies on new technologies for pecan (Carya illinoinensis (Wangenh) K. Koch) cultivation in subtropical regions have mostly focused on seedling production [33,34]. However, seed sizing is a single technique suggested as an efficient indicator positively correlated with seed physiological quality and plantlet vigor [35,36].…”

Section: Fruit Cropsmentioning

confidence: 99%

Innovation in Propagation of Fruit, Vegetable and Ornamental Plants

Roberto

Colombo

2020

Horticulturae

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There are two primary forms of plant propagation: sexual and asexual. In nature, propagation of plants most often involves sexual reproduction, and this form is still used in several species. Over the years, horticulturists have developed asexual propagation methods that use vegetative plant parts. Innovation in plant propagation has supported breeding programs and allowed the production of high-quality nursery plants with the same genetic characteristics of the mother plant, and free of diseases or pests. The purpose of this Special Issue, “Innovation in Propagation of Fruit, Vegetable and Ornamental Plants”, was to present state-of-the-art techniques recently developed by researchers worldwide. The Special Issue has brought together some of the latest research results of new techniques in plant propagation in nine original papers, which deal with a wide range of research activities.

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Section: Fruit Cropsmentioning

confidence: 99%

Innovation in Propagation of Fruit, Vegetable and Ornamental Plants

Roberto

Colombo

2020

Horticulturae

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“…No Brasil, é cultivada na Região Sul até o Estado de Minas Gerais, entretanto, os plantios comerciais, com maiores extensões de área plantada, encontramse nas regiões do Vale do Taquari, Rio Pardo e Central do Estado do Rio Grande do Sul (POLETTO et al, 2014;POLETTO et al, 2015). No Brasil o interesse pela produção desta fruta se da principalmente pela excelente renda que proporciona (POLETTO et al, 2015).…”

Section: Introductionunclassified

“…O tamanho de amostra depende da variabilidade dos dados, da confiabilidade desejada e do erro de estimação permitido (SPIEGEL et al, 2004). Estudos sobre dimensionamento amostral já foram realizados para diversas culturas como para a avaliação de caracteres de maçã (TOEBE et al, 2014), para caracteres de feijão guandu -Cajanus cajan L. (FACCO et al, 2016), avaliação de caracteres de frutos de abacaxizeiro -Ananas comosus L. (KRAUSE et al, 2013), para tremoço branco -Lupinus albus L. (BURIN et al, 2014), para avaliação da massa e diâmetro de frutos de nogueirapecã (CARGNELUTTI FILHO et al, 2015) e para altura e diâmetro de mudas de nogueira-pecã (CARGNELUTTI FILHO et al, 2014). Assim, o objetivo deste trabalho foi determinar o tamanho de amostra necessário para a estimação da média de caracteres de frutos de nogueira-pecã, cultivar Barton.…”

Section: Introductionunclassified

Tamanho de amostra para caracterização de frutos de Carya illinoinensis

Poletto

Fantinel

Muniz

et al. 2019

AGROPECUÁRIA NO SEMIÁRIDO

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Os frutos da nogueira-pecã apresentam variações em seus caracteres morfológicos mesmo sendo oriundos de uma mesma cultivar. Na comercialização de nozes, há classificações de acordo com suas características, que são utilizadas para definição de preços de mercado. O objetivo deste trabalho foi determinar o tamanho de amostra (número de frutos) necessário para a estimação da média de caracteres de frutos de nogueira-pecã, cultivar Barton. Para isso, foram coletados 170 frutos ao acaso de 25 árvores matrizes em um pomar comercial no município de Tucunduva – RS e mensurados os caracteres: massa total do fruto, massa da casca, massa de amêndoa, rendimento de amêndoa, diâmetro longitudinal, diâmetro transversal e número de frutos/kg. Os frutos foram pesados individualmente e após, as porções de casca e amêndoa foram separadas e pesadas em balança analítica. Os diâmetros dos frutos foram medidos com paquímetro digital. Foi calculado o tamanho de amostra para as semiamplitudes do intervalo de 1%, 2%, 3%,..., 15% da estimativa da média, com grau de confiança (1-α) de 95%. São suficientes 23 frutos para a estimação da média de caracteres dos frutos de nogueria-pecã cultivar Barton, com semiamplitude do intervalo de confiança igual a 10% da estimativa da média.

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“…Therefore, pecan producers have to select regionally and horticulturally-adapted cultivars and develop the required technologies for all steps of the production chain, from seed selection for nursery to nut harvesting for the industry. Since high quality seedlings are essential to establishing healthy and productive orchards, studies on new technologies for pecan cultivation in subtropical regions have mostly focused on seedling production [3,4].…”

Section: Introductionmentioning

confidence: 99%

Pecan Propagation: Seed Mass as a Reliable Tool for Seed Selection

et al. 2018

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Pecan is one of the most important horticultural nut crops in the world. It is a deciduous species native to the temperate zones of North America, introduced into the subtropical regions of Brazil during the 1870s. High quality seedlings are essential to establishing healthy and productive orchards, and selection of seeds is an important factor in this issue. In this study we evaluated the correlation between seed mass, emergence rate and morphometric traits of seedlings in the pecan cultivar Importada. A significant positive correlation (r > 0.81) between seed mass and plantlet height, stem diameter, emergence rate and number of leaves was observed. Our results suggest that seed mass can be used as a direct method for seed selection towards production of vigorous pecan seedlings. However, since an increase in seed mass is usually associated with a decrease in the number of seeds that a plant can produce per unit canopy, long-duration studies are recommended in order to evaluate the influence of seed selection on a plantation’s production.

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Dimensionamento amostral para avaliação de altura e diâmetro de mudas de nogueira-pecã

Cited by 8 publications

References 2 publications

Innovation in Propagation of Fruit, Vegetable and Ornamental Plants

Innovation in Propagation of Fruit, Vegetable and Ornamental Plants

Tamanho de amostra para caracterização de frutos de Carya illinoinensis

Pecan Propagation: Seed Mass as a Reliable Tool for Seed Selection

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