Effect of temperature on passion fruit emergence and seedling vigor

Souto, Antônio Gustavo de Luna; Costa, Jussara Cristina Firmino da; Campos, Nathalia Luiza Ferreira; Azevedo, Jéssica Laísca Fernanda de; Santos, Carlos Eduardo Magalhães dos

doi:10.1590/2317-1545v39n1169920

Cited by 7 publications

(7 citation statements)

References 18 publications

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“…Since strelitzia is a tropical species, it may require temperatures above 25 °C under in vitro conditions, which must be investigated. Temperatures for seedling germination and development differ among the species and could induce stress factors, stimulating oxidative stress and increasing reactive oxygen species (ROS) production in some situations (Marutani et al, 2012;Souto et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Temperature and GA3 on ROS and cytogenetic stability during in vitro cultivation of strelitzia zygotic embryos

et al. 2021

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Tropical species may require higher temperatures as well as higher growth regulator concentrations for in vitro development. Since these conditions may affect plant metabolism, the objective of this study was to identify how different temperatures and gibberellin concentrations may affect the in vitro development of strelitzia embryos, analyzing the effect on ROS and cytogenetic stability. Zygotic embryos were cultivated on MS medium supplemented with 5, 10 and 20 µM GA3 under temperatures of 25 °C, 30/25 °C and 30 °C. After 60 days, higher embryonic germination rate (72%) and shoot length of plantlets (3.14 cm) were observed on medium containing 20 µM gibberellic acid (GA3). At this concentration, there was an increase in nitrate reductase activity with no change in the cytogenetic stability. The temperature influenced only shoot and root lengths, which were highest at 25 °C. At 30 °C, superoxide dismutase (SOD) and ascorbate peroxidase (APX) activities increased compared with those at 25 °C. Thus, the addition of 20 µM GA3 to the culture medium and a temperature of 25 °C in the growth room should be used for zygotic embryo culture of strelitzia.

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Section: Introductionmentioning

confidence: 99%

Temperature and GA3 on ROS and cytogenetic stability during in vitro cultivation of strelitzia zygotic embryos

et al. 2021

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“…According to Taiz et al (2017), the greater investment in the shoot limits the growth of roots, but when there was luminosity, for passion fruit seedlings, the length of the main root did not differ among the different sowing depths.…”

Section: Resultsmentioning

confidence: 99%

“…Souto et al (2017) evaluating the emergence of commercial passion fruit hybrids at different temperature levels, demonstrate that on day 14 after sowing, the hybrids presented over 93% emergence at the alternating temperatures of 25-35 ºC, indicating that high temperatures contribute to the early emergence of seedlings.…”

Section: Resultsmentioning

confidence: 99%

“…can intercept luminosity to start the photosynthetic activity (Farooq et al, 2009;Taiz et al, 2017). However, according to Paiva et al (2016), the permanent presence of light can provide constant photosynthesis; this, in some species, may result into photo inhibition, that is, the inhibition of photosynthesis caused by excessive light, resulting in less developed seedlings.…”

Section: Resultsmentioning

confidence: 99%

“…Light influences germination both by quality and by the intensity and duration of the light irradiation (Aud and Ferraz, 2012); it is fundamental to activate the phytochrome, which is a specific photoreceptor capable of inducing seed germination, since it increases the level of the active form of the gibberellin hormone (Taiz et al, 2017), with the possibility of helping the growth and development of seedlings.…”

Section: Introductionmentioning

confidence: 99%

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Luminosity and sowing depth in the emergence and development of passion fruit seedlings

et al. 2017

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-The propagation of passion fruit in commercial orchards is carried out by seeds. However, passion fruit seed germination occurs irregularly. The goal of this study was to evaluate the emergence and development of passion fruit seedlings under different luminosities and sowing depths. The experimental design was completely randomized with six replications of 25 seeds, with a 3 x 5 factor scheme, in which three light conditions (absence of light, presence of 12 h light and 12 h dark and the presence of light for 24 h) were combined with five sowing depths (1, 2, 3, 4 and 5 cm). The emergence test was conducted in a BOD-type germination chamber, with alternating temperatures of 20-30 °C, at intervals of 12 h and the established luminosities. The evaluated characteristics were the emergence percentage for weekly counts, the emergence speed index for 28 days; the total shoot and root length on evaluation day 28 and the individual dry weight. The lack of luminosity accelerates the emergence of passion fruit seedlings, but it produces low quality seedlings. However, the alternation of luminosity associated to a lower sowing depth helps both the emergence and the quality of seedlings produced from passion fruit 14 days after sowing.

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Evidence of maternal effect on germination and vigor of sour passion fruit

et al. 2020

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The seminiferous propagation of Sour Passion Fruit (Passiflora edulis Sims) is the main kind of multiplication due to the ease formation of seedlings. However, the reduced number of productive and homogeneous cultivars reflects the need for genetic breeding. The objective of this study was to assess the maternal and reciprocal effects in vigor and germination of Sour Passion Fruit seeds. The experiment was conducted in a completely randomized design in the factorial scheme, with two structure (hybrid and reciprocal) and ten crosses with four replicates (50 seeds) in trays containing inert sand in germination chamber. Before sowing, it was obtained the weight of 100 seeds, and at 28 days germination percentage, emergence speed index, total seedlings length, shoot length and main root length, number of normal seedlings and dry mass per seedlings were evaluated. The reciprocal effects tell us which genotype is most promising when used as the female or male parent for the trait studied. It can be inferred that there is maternal effect influencing the weight of 100 seeds, emergence, emergence speed index and the number of normal seedlings. There was influence of the parent on the expression of traits in seeds of Sour Passion Fruit. It is important to define the paternal and maternal parent to obtain seeds with high germination potential.

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Effect of temperature on passion fruit emergence and seedling vigor

Cited by 7 publications

References 18 publications

Temperature and GA3 on ROS and cytogenetic stability during in vitro cultivation of strelitzia zygotic embryos

Temperature and GA3 on ROS and cytogenetic stability during in vitro cultivation of strelitzia zygotic embryos

Luminosity and sowing depth in the emergence and development of passion fruit seedlings

Evidence of maternal effect on germination and vigor of sour passion fruit

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