Flowering Geophytes From Chile

Bridgen, Mark P.; Olate, Eduardo; Schiappacasse, Flavia

doi:10.17660/actahortic.2002.570.6

Cited by 16 publications

(15 citation statements)

References 5 publications

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“…By using this technique, desired phenotypes such as blue flowers (Bridgen et al, 2002;Kim and Ohkawa, 2001) could be selected in a reduced period of time. When seeds are germinated and grown only under greenhouse conditions, no flowering corms are obtained even after four years of cultivation in Niigata University greenhouses.…”

Section: Flowering Capabilitymentioning

confidence: 99%

“…In nature, Z. elegans usually grows in sandy soil (Yáñez et al, 2005). It has been described as having a high potential as an ornamental crop because of its light blue to blue flowers and growth habit (Bridgen et al, 2002;Kim and Ohkawa, 2001;Kim et al, 1997). Z. elegans produces only one daughter corm after the growing season, making natural vegetative propagation difficult to achieve (Yáñez, 2005).…”

Section: Introductionmentioning

confidence: 99%

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Decreased time from seed to flowering corm size in Zephyra elegansvia in vitro cultivation

2012

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577-584. Experiments were performed to establish a method to reduce the time from seed to flowering in Zephyra elegans. Seedlings took at least four years to produce a flowering corm. Although germination was highest in a water-agar medium, plant necrosis occurred when plants were later transferred; therefore, MS (Murashige and Skoog) medium was selected as the medium for germination. An increase in the light intensity to 9500 lux and in the pH to 6.7, significantly increased the germination rate. Eight weeks after seed germination, seedlings were transferred to MS media with sucrose concentrations of 45, 60, 75, 90 or 105 g L -1 and a pH 5.7 or 6.7, with the aim of achieving the greatest corm weight gain. After 16 weeks, the best weight gain was obtained in the MS medium with 75 g L -1 of sucrose and a pH of 6.7. The resulting corms were transferred to pots and grown under greenhouse conditions. Corms weighing under 0.12 g did not sprout, whereas all corms over 0.3 g sprouted and all those over 0.4 g at the end of the in vitro culture stage bloomed in the second year of greenhouse cultivation. The time required for development from seedling to flowering corm was reduced to two years.

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Section: Flowering Capabilitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Decreased time from seed to flowering corm size in Zephyra elegansvia in vitro cultivation

2012

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“…Cytologically, it has been divided into two major plant groups with chromosome numbers of 2n = 10 (n = 5) or 2n = 18 (n = 9) (Araneda et al, 2004;Crosa, 1998;Jara-Arancio et al, 2012). This geophyte genus has been shown to have high ornamental value due to its longvase life, various colors and shapes, and its ability to grow in pots or gardens alongside cacti with limited irrigation (Bridgen et al, 2002;Catley, 2003;Kim and Ohkawa, 2001;Mansur et al, 2004). There are three commercial varieties currently available in Chile and several others in Holland.…”

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confidence: 99%

Temperature Effect on Seed Germination in the Genus Leucocoryne (Amaryllidaceae)

Cuadra¹,

Vidal²,

Susana³

et al. 2016

horts

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Leucocoryne is a Chilean endemic genus from the Amaryllidaceae family. It is an emerging crop with some registered varieties, currently oriented to a niche ornamental market. In the present work, seed germination in Leucocoryne dimorphopetala, Leucocoryne coquimbensis, Leucocoryne purpurea, Leucocoryne aff. vittata, Leucocoryne aff. violacescens, and Leucocoryne ixioides for seeds stored for 4 months and in L. purpurea, Leucocoryne vittata, L. aff. vittata, and L. ixioides for seeds stored for up to 16 months was analyzed at 10, 15, 20, or 25 °C. Germination data were analyzed by the previously developed time-germination model p = A{1 − exp[−k(t − t0)]}. Each germination curve had a coefficient of determination (R2) higher than 0.89, except when there was lack of germination. Results show that higher germination was better achieved at lower (10 or 15 °C) rather than at the higher temperatures (20 or 25 °C). When comparing germination results at temperatures of 10 and 15 with results at 20 °C, germination decreased by at least 30% and became near zero at 25 °C in seed stored for 4 months. Similarly when seeds were stored for 16 months, germination decreased by ≈20% at 20 °C, and again was near zero for germination at 25 °C. These germination habits of Leucocoryne are interpreted as an adaptive strategy to its natural habitats. In addition, L. dimorphopetala presents a type of dormancy and other species (L. purpurea, L. ixioides, and L. aff. vittata) may be sensitive to after-ripening changes during storage.

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“…As a consequence, and following the Red List criteria of the International Union for Conservation of Nature [9], L. ovallei is currently classified as an endangered species in Chile [10][11][12][13][14]. Accordingly, the establishment of propagation programmes to assist conservation strategies for this plant has become a concern for governmental agencies and conservationists [15,16].…”

Section: Introductionmentioning

confidence: 99%

Sexual and asexual reproductive aspects of Leontochir ovallei, a rare and endangered geophyte of the Atacama Desert

Vargas

Jofré

Navarrete

et al. 2018

Rev. Chil. de Hist. Nat.

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Background: "Garra de Leon" (Leontochir ovallei) is an ephemeral endangered Alstroemeriaceae species endemic to Chile. Despite many efforts to improve the conservation of this species, the stimulation of dormant seeds and the production of rhizomes under controlled conditions remain unexplored. The aims of this study were to examine the germination responses of L. ovallei seeds under different in vitro conditions and to evaluate the formation of viable rhizomes after transplantation from in vitro to ex vitro conditions. Methods: We evaluated five in vitro seed germination treatments: (1) acid scarification, (2) acid scarification followed by imbibition of seeds in aerated water, (3) imbibition of seeds in gibberellic acid, (4) clipping of seeds with a scalpel, and (5) seeds without any treatment (control). Seedlings obtained under in vitro conditions were transplanted to ex vitro conditions following a gradual acclimation process. After eight months, the number of rhizomes per plant was counted. To test asexual multiplication, each rhizome with its respective storage organ was divided using a scalpel and then left to rest for two years before subsequent evaluation of viability. After that period, the rhizomes were re-hydrated, and the emergence of plants after three months was evaluated.

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Flowering Geophytes From Chile

Cited by 16 publications

References 5 publications

Decreased time from seed to flowering corm size in Zephyra elegansvia in vitro cultivation

Decreased time from seed to flowering corm size in Zephyra elegansvia in vitro cultivation

Temperature Effect on Seed Germination in the Genus Leucocoryne (Amaryllidaceae)

Sexual and asexual reproductive aspects of Leontochir ovallei, a rare and endangered geophyte of the Atacama Desert

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