Turgescência de crisântemos após a colheita utilizando o equipamento Wiltmeter®

Spricigo, Poliana Cristina; Ferreira, Marcos D.; Calbo, Adonai Gimenez

doi:10.1590/s0103-84782012000200012

Cited by 3 publications

(3 citation statements)

References 5 publications

(4 reference statements)

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“…Similar results to this experiment were verified in the work by Antes et al (2009) with rose stems, in this case the reduction of absorption of preservative solutions was at 7 DPC. Spricigo et al (2012) verified absorption decrease of solutions of chrysanthemum stems (Dendranthema grandiflora Tzvelev.) from 3 DPC, and durability of stems until 12 DPC.…”

Section: Resultsmentioning

confidence: 91%

Pós-colheita de hastes florais de cártamo colhidas em diferentes épocas e submetidas a diferentes soluções conservantes

Menegaes

Lidório

Bellé

et al. 2019

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The conservation of the cut flower stems aims to prolong durability, maintain the quality and reduce the losses after harvest, providing a greater period of lifespan and commercialization. Thus, the objective of this work was to evaluate the quality and durability in post-harvest of fresh safflower (Carthamus tinctorius L.) flower stems harvested in different times and submitted to different preservative solutions. The experiment was conducted in entirely randomized design and, organized in 4x8 (four preservative solutions and eight harvest seasons) factorial scheme, with four repetitions, and each experimental unit consisting of five floral stems. The cultivation of floral stems of safflower occurred at Floriculture Sector and the harvest seasons of them were carried out in the beginning of flowering from the sowing performed in the first seasonal half: in winter, spring and summer of 2016, autumn, winter, spring and summer of 2017 and autumn of 2018. And, the preservative solutions were: distilled water (control); distilled water + sucrose 2%; distilled water + sodium hypochlorite 2% and distilled water + sucrose 2% + sodium hypochlorite 2%. The floral stems were evaluated in relation to quality notes, dehydration and absorption of preservative solutions. We observed that the floral stems of safflower presented shelf life in average of nine days, with absorption of solution in average of 0.021 mL day-1 g-1 of fresh mass and that the use of preservatives was not beneficial to conservation in post-harvest.

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Section: Resultsmentioning

confidence: 91%

Pós-colheita de hastes florais de cártamo colhidas em diferentes épocas e submetidas a diferentes soluções conservantes

Menegaes

Lidório

Bellé

et al. 2019

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“…Na literatura, o aparelho foi utilizado com êxito na determinação de potencial de turgescência em folhas de alface e de flores (Calbo et al, 2008(Calbo et al, , 2010Spricigo et al, 2012). No trabalho de Dutra et al (2011), com a variedade de mamoeiro Sunrise, o Wiltmeter foi usado para estimar o conteúdo relativo de água a partir de medições de potencial de turgor.…”

Section: Resultsunclassified

“…Este aparelho é um equipamento simples, portátil e de fácil manuseio, que executa medidas objetivas de turgescência, de forma não destrutiva, durante o desenvolvimento das plantas (Calbo et al, 2008). Ele já foi utilizado para determinação da turgescência em folhas de couve, alface, chicória e crisântemos (Calbo et al, 2008(Calbo et al, , 2010Spricigo et al, 2012).…”

Section: Introductionunclassified

Pré-seleção de poliploides por métodos foliares em acessos de bananeira

Jesus

Silva

Silveira

et al. 2016

Pesq. agropec. bras.

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Resumo -O objetivo deste trabalho foi avaliar métodos foliares para pré-selecionar poliploides putativos de bananeira em trabalhos com poliploidização in vitro. A espessura foliar, estimada a partir da massa específica das matérias fresca e seca de discos foliares, e a turgescência foliar das plantas, medida diretamente nas plantas às 6h30 da manhã com o aparelho Wiltmeter, foram determinadas em mudas de bananeira diploides (Calcutta e Lidi), triploides (Grande Naine e Williams) e tetraploides (Bucanero e Calypso). A avaliação do conteúdo de DNA foi realizada por citometria de fluxo, tendo-se substituído o diploide Lidi pelo NBA, e o triploide Williams pelo Caipira. Os genótipos com maior ploidia apresentaram maior massa de matéria fresca do disco foliar. O potencial de turgescência foliar também se relacionou significativamente com a ploidia. Os genomas diploides apresentaram os menores conteúdos de DNA (0,96 pg); os triploides Grande Naine (1,48 pg) e Caipira (1,63 pg), conteúdos intermediários; e os tetraploides Calypso (1,90 pg) e Bucanero (2,26 pg), os maiores conteúdos. A massa de matéria fresca de discos foliares e a turgescência foliar das plantas, sob adequado manejo de irrigação, podem ser utilizadas para pré-selecionar tetraploides de bananeira em trabalhos de poliploidização in vitro.Termos para indexação: Musa, citometria de fluxo, conteúdo de DNA, turgescência foliar, Wiltmeter. Preselection of polyploids using leaf methods in banana accessionsAbstract -The objective of this work was to evaluate leaf methods to preselect banana putative polyploids in in vitro works with polyploidization. Leaf thickness, estimated from the specific masses of the fresh and dry matters of leaf disks, and leaf turgor, measured directly on the plants at 6:30 a.m. using the Wiltmeter equipment, were determined in diploid (Calcutta and Lidi), triploid (Grande Naine and Williams), and tetraploid (Bucanero and Calypso) banana. The evaluation of the DNA content was performed by flow cytometry, replacing the diploid Lidi by NBA, and the triploid Williams by Caipira. Genotypes with higher ploidy showed the highest fresh matter mass of the leaf disk. Leaf turgor potential was also significantly related to ploidy. Diploid genomes showed the lowest DNA contents (0.96 pg); the triploids Grande Naine (1.48 pg) and Caipira (1.63 pg), intermediate contents; and the tetraploids Calypso (1.90 pg) and Bucanero (2.26 pg), the highest contents. Fresh matter mass of leaf disks and leaf turgor, under proper irrigation management, can be used to preselect banana tetraploids in in vitro polyploidization studies.Index terms: Musa, flow cytometry, DNA content, leaf turgor, Wiltmeter. IntroduçãoA maioria dos genótipos de bananeira atualmente em uso pela agricultura foi obtida de cruzamentos interespecíficos entre Musa acuminata Colla (genoma A, 2n=2x=22) e M. balbisiana Colla (genoma B, 2n=2x=22). Essas bananeiras são partenocárpicas e estéreis, características que dificultam o melhoramento genético convencional e que, portanto, têm estimulado o...

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