Propagation by Stem Cuttings of  Tropaeolum pentaphyllum Lam. (Crem): An Alternative for Production of Seed Tubers

Balestrin, Júlio Tagliari; Souza, Tiago Lodi de; Betto, Alan Serafini; Silva, Daniela da; Rogalski, Juliana Marcia

doi:10.9734/jeai/2021/v43i130634

Cited by 6 publications

(8 citation statements)

References 9 publications

(11 reference statements)

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“…[15], Ficus carica L. [16] and Tropaeolum pentaphyllum Lam. [17] greater rooting was observed as cutting length increased, whereas in Rhododendron simsii Planch.…”

Section: Table 1 Percentages Of Live Cuttings Atmentioning

confidence: 86%

Effect of Cutting Size on the Performance of Exogenous Auxin IBA in Vegetative Propagation of Rubus erythroclados Mart. ex Hook. f.

Balestrin

Baroni

Rogalski

2021

JEAI

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Aim: The climbing shrub Rubus erythroclados Mart. ex Hook. f. (amora-verde) has great food (fruits) and medicinal (leaves) potential. However, this species remains understudied. The objective of this study was to evaluate the interaction between cutting size and IBA concentration in the vegetative propagation of R. erythroclados by stem cuttings. Study Design: The experimental design used was completely randomized in a 3x5 factorial combination. The cutting size factor was represented by three levels (10, 15 and 20 cm) and IBA concentration factor by five levels (0, 1,000, 2,000, 3,000 and 4,000 mg L-1). Results: There was an interaction between the factors in 13 of the 19 variables analyzed, being: live cuttings at 30 and 60 days, live cuttings with callus formation, sprouted cuttings at 30, 60 and 90 days, rooted cuttings, shoot number, shoot diameter, root number, root length, length of the largest root and root diameter. Size increase of the R. erythroclados cuttings caused a decrease in the phytotoxic effect of IBA in the development of the aerial part. The effect of IBA in response to rooting induction, in the larger size of R. erythroclados cuttings, required an increase in IBA concentration compared to the cuttings of shorter size. Conclusion: Cuttings of 10 and 15 cm treated with 1,000 mg L-1 of IBA showed greater rooting (20.0%) compared to the other treatments, being, therefore, indicated for the vegetative propagation of R. erythroclados by stem cuttings.

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“…[15], Ficus carica L. [16] and Tropaeolum pentaphyllum Lam. [17] greater rooting was observed as cutting length increased, whereas in Rhododendron simsii Planch.…”

Section: Table 1 Percentages Of Live Cuttings Atmentioning

confidence: 86%

Effect of Cutting Size on the Performance of Exogenous Auxin IBA in Vegetative Propagation of Rubus erythroclados Mart. ex Hook. f.

Balestrin

Baroni

Rogalski

2021

JEAI

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“…Thus, germination can be used aiming at the propagation of the species (production of seedtubers), as well as to expand the genetic diversity in crops of T. pentaphyllum. Another propagation form that can be used to produce seed-tubers is the cutting of aerial stem with tuber formation of most 45% [14].…”

Section: Discussionmentioning

confidence: 99%

“…The propagation of this species is through of planting of "seedtubers", which have no standard size [13]. Another form of production of seed tubers is by stem cuttings [14]. It is also possible to propagate this species through seeds, but there are difficulties in germination [5].…”

Section: Introductionmentioning

confidence: 99%

Seed Germination of the Herbaceous Vine Tropaeolum pentaphyllum Lam. (Tropaeolaceae): A Neglected Geophyte with High Agricultural Potential

Rogalski

Silva

Balestrin

et al. 2021

JEAI

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The objective of this study was to evaluate the seed germination of Tropaeolum pentaphyllum Lam., an endangered geophyte native of southern Brazil with agriculture potential due its edible tubers. Two experiments were carried out in 2017: germination of T. pentaphyllum under natural conditions and under controlled conditions. In the experiments under natural and controlled conditions, the germination of 1,100 and 100 seeds was evaluated, respectively. In the experiment under controlled conditions, two treatments (natural light and dark) were evaluated and each treatment contained 50 seeds. In the natural conditions experiment, in 2018 (first year), of the 1,100 seeds, 5.6% germinated and 76.5% persisted in the soil; and in 2019 (second year), 5.3% of the seeds germinated and no seeds remained in the soil. In natural conditions experiment, 10.9% of seeds germinated over two years. In controlled conditions experiment, in 2018 the germination in dark was higher (48%) compared to natural light (18%); and in 2019, despite the absence of statistical differences, the dark showed a higher value of germination (12%) in relation to natural light (6%). Over two years, dark treatment showed higher germination (60%) compared to natural light (24%) and no seeds remained in the substrate. The production of tubers in plants obtained by seed germination was 98.4% and 100%, in natural and controlled conditions, respectively. The highest germination rates occurred under dark conditions indicating that the species is preferential negative photoblastic. In addition, this species forms a seed bank in the soil, in which the seeds remained for a maximum of two years. The seed germination can contribute to the genetic diversity of crops and the production of seed-tubers, decreasing the collection of tubers in situ, contributing to the conservation and agricultural use of T. pentaphyllum.

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“…Cuttings should be placed into a rich organic substrate such a Moorland Gold peat alternative compost and should be kept lightly moist in a closed propagator with good humidity until rooting occurs. On average cuttings should root within 3–5 months producing small tubers before the top growth begins to die back as usual (Balestrin et al, 2021).…”

Section: Tropaeolum Lmentioning

confidence: 99%

“…megepetalum and pentaphyllum ) grown at RBG, Kew, the third method (from cuttings) is a relatively recent technique applied to glasshouse grown material (albeit in Brazil), of subsp. pentaphyllum (Balestrin et al, 2021). All three methods are discussed below since it is likely that all three subspecies have a high agricultural potential and propagation by cuttings would preclude continuously collecting tubers from the wild as a food and condiment source.…”

Section: Tropaeolum Lmentioning

confidence: 99%

1027. TROPAEOLUM PENTAPHYLLUM subsp. MEGAPETALUM: Tropaeolaceae

Hind¹,

Moore²,

King³

2022

Curtis's Botanical Magazine

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Tropaeolum pentaphyllum Lam. subsp. megapetalum (Buchenau) Sparre (Tropaeolaceae) is described and illustrated; the subspecies is endemic to Bolivia, but is relatively widespread in montane areas between 1900 and 3100 m. Cultivation and related notes are provided. The presence of thread-like pollenkitt has been observed amongst the pollen in dehiscing anthers of T. pentaphyllum subsp. megapetalum, T. pentaphyllum subsp. pentaphyllum, T. austropurpureum (J. M. Watson & A. R. Flores) J. M. Watson & A. R. Flores, T. brachyceras Hook. & Arn., T. tricolor Sweet, a proposed hybrid (originating at Kew), T. tricolor × brachyceras and T. majus L., and in herbarium material of T. minus L. and T. speciosum Poepp. & Endl., although viscin-like threads have never been reported in Tropaeolum before. The likelihood that this is connected with the ornithophilous pollination biology is discussed as is the potential for further research. The distinction of the subspecies is discussed in relation to the other two subspecies. A perspective on the Tropaeolaceae is provided, and a brief history of Tropaeolum outlined. Tropaeolum sect. Chilensia subsect. Chymocarpus (within which T. pentaphyllum is placed) is now validated after previous attempts failed, and a new combination provided.On a cold, very wet, and cloudy late afternoon in early November, at the Royal Botanic Gardens, Kew, the first author first met the subject of the current plate, Tropaeolum pentaphyllum Lam. subsp. megapetalum (Buchenau) Sparre (Tropaeolaceae). In a large pot, at the northern end of the Davies Alpine House, sprawling over a bamboo trellis, were the unmistakable five-partite leaves of this Bolivian climber. Dotted throughout the upper half of the plant were the remarkable, and distinctive, Turkey Red coloured, two-petalled, downward pointing, flowers. Each zygomorphic flower has rather startling spotted sepals and a distinctive dark red spur rising behind. A closer examination in the Herbarium later revealed aspects of its biology that had apparently never been observed before.

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Propagation by Stem Cuttings of Tropaeolum pentaphyllum Lam. (Crem): An Alternative for Production of Seed Tubers

Cited by 6 publications

References 9 publications

Effect of Cutting Size on the Performance of Exogenous Auxin IBA in Vegetative Propagation of Rubus erythroclados Mart. ex Hook. f.

Effect of Cutting Size on the Performance of Exogenous Auxin IBA in Vegetative Propagation of Rubus erythroclados Mart. ex Hook. f.

Seed Germination of the Herbaceous Vine Tropaeolum pentaphyllum Lam. (Tropaeolaceae): A Neglected Geophyte with High Agricultural Potential

1027. TROPAEOLUM PENTAPHYLLUM subsp. MEGAPETALUM: Tropaeolaceae

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