Emergência e vigor de mudas de genótipos de mamoeiro em função da irradiância

Mengarda, Liana Hilda Golin; Lopes, José Carlos; Buffon, Rafael Breda

doi:10.1590/s1983-40632014000300012

Cited by 4 publications

(4 citation statements)

References 12 publications

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“…In this example, it is more prudent to use d = 15%, which corresponds to X 0 = 7 BEU, which as can be seen, It shows small change in VU (Xi) from this plot size (Table 2). However, larger size is required when considering NL that requires X 0 = 9 seedlings per plot, which approximates to the useful plot size assumed by other researchers in research with seedlings in tubes of other varieties of papaya (SERRANO et al, 2010;PAIXÃO et al, 2012;OLIVEIRA FILHO et al, 2013;SÁ et al, 2013;MENGARDA et al, 2014).…”

Section: Resultsmentioning

confidence: 84%

“…This statement can be made especially in relation to LRL since seedlings with very small roots tend to suffer more in the initial stage of growth in the field. In the production of papaya, Serrano et al (2010) in the evaluation of five cultivars, Paixão et al (2012) in the evaluation of 'Golden THB' and, Mengarda et al (2014) in the evaluation of four cultivars, obtained similar results in root length, in the evaluation at 30, 30 and 45 DAS, respectively.…”

Section: Resultsmentioning

confidence: 84%

“…In studies with production of papaya, in tubes, in nursery, useful portion sizes follow an arbitrary, given the inexistence of plot dimensioning studies. Are reported the evaluation of experiments with four plot sizes (MELO et al, 2007), six (SÁ et al, 2013), nine (OLIVEIRA FILHO et al, 2013), ten (PAIXÃO et al, 2012;MENGARDA et al, 2014) and twelve (SERRANO et al, 2010) useful papaya seedlings per plot.…”

Section: Introductionmentioning

confidence: 99%

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Plot Size in the Evaluation of Papaya Seedlings 'Baixinho De Santa Amália' in Tubes

et al. 2016

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ABSTRACT-Were evaluated three characters in papaya seedlings 'Baixinho de Santa Amália' to estimate the optimum plot size and the number of replications in a completely randomized experiment, a randomized block and Latin square. The characters were seedling height, leaf number and length of roots from uniformity test with 240 seedlings. The determination of the optimum plot size was done by applying the method of Hatheway (1961). The number of seedlings per plot for seedling production is variable depending on the number of treatments and replications assumed precision, the character in question and the experimental design. Comparing designs, the plot size is greater in the Latin square, followed by a randomized block design and completely randomized, and this difference is more pronounced the lower the number of treatments and replicates used. For the same number of treatments and the same precision, the most efficient use of the experimental area is given using smaller plot, with more replications, which require less space in the nursery than larger plots with fewer replications. For experiments completely randomized and randomized blocks with five or more treatments, four replications, and precision of 15% around the mean, it is recommended to use nine seedlings per plot. Index terms: Carica papaya L., experimental precision, experimental planning, design experimental. TAMANHO DE PARCELA NA AVALIAÇÃO DE MUDAS DE MAMOEIRO'BAIXINHO DE SANTA AMÁLIA' EM TUBETES RESUMO-Foram avaliados três caracteres em plântulas de mamoeiro 'Baixinho de Santa Amália' com objetivo de estimar o tamanho ótimo de parcelas e o número de repetições em experimento inteiramente ao acaso, em blocos ao acaso e em quadrado latino. Os caracteres foram altura da plântula, número de folhas e comprimento da maior raiz a partir de ensaio em branco com 240 plântulas. A determinação do tamanho ótimo de parcela foi feita aplicando-se o método de Hatheway (1961). O número de plântulas por parcela para produção de mudas é variável em função do número de tratamentos e de repetições, precisão assumida, do caráter em questão e do delineamento experimental. Na comparação entre delineamentos, o tamanho de parcela é maior no quadrado latino, seguido de blocos ao acaso e inteiramente ao acaso, sendo que esta diferença é mais acentuada quanto menor for o número de tratamentos e de repetições. Para um mesmo número de tratamentos e mesma precisão, o uso mais eficiente de área experimental se dá utilizando-se parcelas menores, com maior número de repetições, as quais demandam menor espaço em viveiro do que parcelas maiores, com menor número de repetições. Para experimentos inteiramente ao acaso e em blocos ao acaso com cinco ou mais tratamentos, quatro repetições, e, precisão de 15% em torno da média, recomenda-se o uso de nove plântulas por parcela. Termos para indexação: Carica papaya L., precisão experimental, planejamento experimental, delineamentos experimentais.

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Section: Resultsmentioning

confidence: 84%

Section: Resultsmentioning

confidence: 84%

Section: Introductionmentioning

confidence: 99%

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Plot Size in the Evaluation of Papaya Seedlings 'Baixinho De Santa Amália' in Tubes

et al. 2016

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“…In trials with production of papaya seedlings in nursery, useful sizes of plots follow the same arbitrariness, also due to the lack of studies on plot designs. Evaluation of experiments with plots sizes of four (Melo et al, 2007), six (Sá et al, 2013), 10 (Paixão et al, 2012Mengarda et al, 2014) and 12 (Serrano et al, 2010) seedlings per plot are reported.…”

Section: Introductionmentioning

confidence: 99%

Optimal plot size in the evaluation of papaya scions: proposal and comparison of methods

Celanti

Schmildt

et al. 2016

Rev. Ceres

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RESUMOEvaluating the quality of scions is extremely important and it can be done by characteristics of shoots and roots. This experiment evaluated height of the aerial part, stem diameter, number of leaves, petiole length and length of roots of papaya seedlings. Analyses were performed from a blank trial with 240 seedlings of "Golden Pecíolo Curto". The determination of the optimum plot size was done by applying the methods of maximum curvature, maximum curvature of coefficient of variation and a new proposed method, which incorporates the bootstrap resampling simulation to the maximum curvature method. According to the results obtained, five is the optimal number of seedlings of papaya "Golden Pecíolo Curto" per plot. The proposed method of bootstrap simulation with replacement provides optimal plot sizes equal or higher than the maximum curvature method and provides same plot size than maximum curvature method of the coefficient of variation.

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Seed germination and vigor of passion fruit hybrids

et al. 2017

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Most commercial plantations of passion fruit is propagate plants by seed, but germination is irregular, which hinders the growth of seedlings and uniformity, and is connected with the plant genotype. The objective of this study was to evaluate the germination and early growth of passion fruit hybrid seedlings, obtained from different genetic combinations. The hybrids were obtained from the cross between progenies from the breeding program of the Universidade Federal de Viçosa with hybrids of the Empresa Brasileira de Pesquisa Agropecuária and of the Viveiros Flora Brasil. The experimental design was completely randomized with six hybrids, five replicates and fifty seeds per experimental unit. Germination was assessed daily until the 28 days, and at the end of the period it was obtained the mean time germination, emergence speed index, seedling height, the length of shoots and roots, and the individual seedling dry matter (root + shoot)was assessed. Among the passion fruit hybrids evaluated, hybrid HB2 (UFVM0212 × BRS Sol do Cerrado) showed the highest germination and seedling biometric values and might be a genotype with potential for breeding programs for seed quality. The specific combining ability of parents can influence the quality of seeds and the vigor of passion fruit seedlings. A factor must be considered is the correct choice of maternal and paternal parents, since they influence the quality of seeds.Keywords: biometrics, combining ability, emergency, Passiflora edulis Germinação de sementes e vigor de híbridos de maracujazeiro ResumoA maioria das plantações comerciais de maracujazeiro é propagada por sementes, mas a germinação é irregular, o que dificulta o crescimento das mudas e sua uniformidade, e está ligado ao genótipo da planta. Objetivou-se no trabalho, avaliar a germinação e o crescimento inicial em plântulas de híbridos de maracujazeiro, obtidos de diferentes combinações genéticas. Os híbridos foram obtidos do cruzamento de progênies do programa de melhoramento da Universidade Federal de Viçosa com híbridos comerciais da Empresa Brasileira de Pesquisa Agropecuária e do Viveiro Flora Brasil. O delineamento experimental utilizado foi o inteiramente casualizado, com seis híbridos, cinco repetições e cinquenta sementes por unidade experimental. A germinação foi avaliada diariamente até 28 dias, e ao final do período foi obtido o tempo médio de germinação, o índice de velocidade de emergência, a altura da planta, o comprimento da parte aérea e da raiz e massa seca individual das plântulas (raiz + parte aérea). Entre os híbridos de maracujazeiro avaliados, o híbrido HB2 (UFVM0212 × BRS Sol do Cerrado) apresentou os maiores valores de germinação e biométricos de mudas e pode ser um genótipo com potencial para programas de melhoramento para qualidade de semente. A capacidade específica entre os pais pode influenciar a qualidade das sementes e o vigor das mudas de maracujazeiro. Um fator que deve ser considerado é a escolha correta dos pais maternos e paterno, uma vez que eles influenciam a qu...

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Emergência e vigor de mudas de genótipos de mamoeiro em função da irradiância

Cited by 4 publications

References 12 publications

Plot Size in the Evaluation of Papaya Seedlings 'Baixinho De Santa Amália' in Tubes

Plot Size in the Evaluation of Papaya Seedlings 'Baixinho De Santa Amália' in Tubes

Optimal plot size in the evaluation of papaya scions: proposal and comparison of methods

Seed germination and vigor of passion fruit hybrids

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