Vigor of zinnia seedlings produced in alternative substrate in trays with different cell size

Pêgo, Rogério Gomes; Antunes, Luiz Fernando de Sousa; Silva, Aline Roberta Caetano

doi:10.1590/2447-536x.v25i4.2049

Cited by 11 publications

(11 citation statements)

References 23 publications

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“…Lower dry weight of roots and total per seedling were obtained in the tray with 200 cells only for older seedlings, 46 and 53 days old, while for younger seedlings (39 days) there was no difference between the trays (Table 2). Seedlings produced in trays with lower volume cells restrict seedling growth due to less substrate and space for root growth (Seabra Júnior et al, 2004;Pêgo et al, 2019), even if the number of roots is not restricted (Table 1), as observed in this work. Cells with less volume may restrict the availability of nutrients, oxygenation, water and other essential elements for seedling growth (Seabra Júnior et al, 2004).…”

Section: Resultssupporting

confidence: 63%

Productivity and quality of sweet potato roots propagated by mini-cuttings with different trays and seedling ages

Cardoso¹,

Nasser²,

Freitas³

et al. 2021

Hortic. Bras.

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The use of mini-cuttings is an option for obtaining sweet potato propagules of excellent quality. The objective of this research was to evaluate the production and quality of sweet potato roots propagated by mini-cuttings in different types of trays and ages of seedlings. Six treatments, resulting from the factorial 2x3, were evaluated: two types of trays (162 and 200 cells, with 31 and 18 mL of substrate per cell, respectively) and three ages of seedlings (39, 46 and 53 days after placement of mini-cuttings in trays), in a randomized block design, with five replications. Seedlings characteristics, production and quality of roots were evaluated. Higher number and dry weight of leaves per seedling were observed in the tray with 162 cells than in trays with 200 cells. The younger seedlings (39 days) had a lower number of leaves, dry weight of leaves, stem, roots ant total (leaves + stem + roots) than seedlings of other ages. There was no difference in root production depending on the type of tray, regardless of the age of the seedlings. For the 162-cell tray, the age of the seedlings did not affect the production of roots. On the other hand, for the 200-cell tray, higher roots production was observed on seedlings 39 days age compared to seedlings with 53 days. No differences were observed among the roots of different treatments for titratable acidity, and levels of sucrose, reducing sugars ant total sugars. It is recommended to avoid old seedlings, that is, it is recommended to use seedlings with a maximum of 43 days after planting of mini-cuttings for trays with 200 cells, while for trays with 162 cells no difference in root production was observed with the different ages of the seedlings.

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Section: Resultssupporting

confidence: 63%

Productivity and quality of sweet potato roots propagated by mini-cuttings with different trays and seedling ages

Cardoso¹,

Nasser²,

Freitas³

et al. 2021

Hortic. Bras.

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“…For the ornamental species Lantana camara L., the authors Barone et al (2018) also observed that sewage sludge, used pure or in mixtures with pupunha bark (Bactris gasipae Kunth) positively influenced the height growth of seedlings and attributed these findings to the high contents of nutrients and organic matter in the composition of these substrates. Additionally, Pêgo et al (2019) when evaluating the quality of Zinnia elegans seedlings produced in alternative substrates obtained greater seedling height with the substrate obtained by composting agricultural waste and, Barroso et al (2020) when producing seedlings of the same species in substrates based on carnauba bagasse observed an increase in height with the increase in the proportion of compost in the substrates. Thus, it is possible to observe that the presence of organic matter in the substrates has become indispensable for the growth in height of the seedlings, as reported by Cordeiro et al (2020) and who stated that the organic portion is responsible for the supply of nutrients and presents the best results in the production of seedlings.…”

Section: Resultsmentioning

confidence: 90%

“…It tolerates dry and sunny environments, which makes it suitable for places where growing other types of flowers would be difficult (Zamiran et al, 2013;Ahmad et al, 2015;Pallavi et al, 2017). Although it has great potential for use medicine and phytoremediation, in Brazil there are few studies that address the process of seedling production using substrates from organic waste (Sousa et al, 2011;Pêgo et al, 2019;Barroso et al, 2020Gomaa et al, 2020Panda et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Initial growth of zinnia seedlings in substrate with different proportions of biosolid

et al. 2022

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Zinnia (Zinnia elegans Jacq.) is a widely cultivated species and used as an ornamental plant in the world flower market. Although it has great potential for phytoremediation and compounds with anti-infective and antioxidant activities there are few studies that address the process of production of its seedlings especially using substrates from organic waste. This study aimed to evaluate the potential of biosolid as a substrate component in the initial growth of Zinnia elegans seedlings. The seedlings were produced in nursery conditions with 50% light control. The experimental design was entirely randomized. There were six treatments, four repetitions and five plants per plot. The treatments consisted of substrates resulting from the mixture of subsoil (SS) and biosolid (BIO) in different proportions: 100% SS (control); 80% SS + 20% BIO; 60% SS + 40% BIO; 40% SS + 60% BIO; 20% SS + 80% BIO; T6 100% BIO. The morphological and quality characteristics of the seedlings were evaluated. Polynomial regression analysis and Pearson correlation coefficient were performed. Quadratic regression fitting was observed for plant height, stem diameter, leaf area, total chlorophyll, and shoot and root dry mass, as well as total dry mass. The shoot height/stem diameter ratio was the characteristic that correlated least with the others, being observed a positive correlation only with plant height. The use of biosolid in the proportion of 60% in the substrate composition proved to be efficient for the initial growth of seedlings as it showed the best responses for most morphological and quality characteristics of the seedlings.

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“…), species of the Asteraceae family of great potential in Brazil that presents an immense diversity of colors and petal shapes (Franzen et al, 2016), there are few studies about the longevity and postharvest characteristics of its flowers. Parameters such as density, porosity and water retention capacity of the growth substrate are known to influence the initial development of zinnia, and its floral quality (Pê go et al, 2019;Sardoei et al, 2014). As regards the influence of irrigation management, Heidari et al (2016) illustrated that growing plants under low water availability in arid or semi-arid climates leads to a decrease in the postharvest durability of zinnia flowers, cv.…”

Section: Introductionmentioning

confidence: 99%

Postharvest Quality of Cut Zinnia Flowers Cultivated Under Different Irrigation Levels and Growing Seasons

Martins

Pêgo

Cruz³

et al. 2021

JAS

Self Cite

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The quality of floral stems depends on a set of pre-harvest factors which can influence their postharvest longevity. Although the identification of visual signs of senescence through scales is decisive in assessing the loss of floral quality in the postharvest period, this scale does not exist for zinnia flowers (Zinnia elegans Jacq.). Thus, the objectives of this study were to evaluate the effect of different irrigation levels and growing seasons on the postharvest longevity of zinnia floral stems; and to determine a senescence scale to assess their durability. Therefore, zinnia plants (cv. “Red California Giant”) were cultivated in pots inside a greenhouse in Seropédica (Rio de Janeiro, Brazil), with a randomized block design, under four irrigation levels (46%, 64%, 75% and 100% of the species’ water requirement) and two cycles (autumn-winter and winter-spring). At the end of each cycle, 48 stems from each treatment were harvested and placed in containers holding 300 mL of supply water. For all irrigation levels and crop cycles, there was an increase in the fresh stem weight on the first days after harvesting and the water absorption rate was higher on the first day of evaluation. The proposed senescence scale allowed us to evaluate the loss of floral quality in the postharvest period. The stems from both cycles had satisfactory results, mainly of commercial longevity and the score 5 on the scale, which represents 100% of the stems’ market value. The main postharvest results of the zinnia floral stems were not influenced by the irrigation levels.

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Vigor of zinnia seedlings produced in alternative substrate in trays with different cell size

Cited by 11 publications

References 23 publications

Productivity and quality of sweet potato roots propagated by mini-cuttings with different trays and seedling ages

Productivity and quality of sweet potato roots propagated by mini-cuttings with different trays and seedling ages

Initial growth of zinnia seedlings in substrate with different proportions of biosolid

Postharvest Quality of Cut Zinnia Flowers Cultivated Under Different Irrigation Levels and Growing Seasons

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