Phytochrome and temperature control of seed germination in Muntingia calabura L. (Elaeocarpaceae)

Leite, Idalina Tereza de Almeida; Takaki, Massanori

doi:10.1590/s1516-89132001000300012

Cited by 13 publications

(5 citation statements)

References 16 publications

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“…In laboratory conditions, Leite and Takaki (1991) observed a high germination rate of M. calabura seeds at 35ºC and under direct illumination. In addition, Lopes et al (2002) verified that the germination of M. calabura seeds would not occur unless the gelatinous mass around them was eliminated, which could be accomplished by their passage through the bowels of animals.…”

Section: Turdus Leucomelas Muscicapidae 03mentioning

confidence: 88%

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Reproductive ecology of the exotic tree Muntingia calabura L. (Muntingiaceae) in southeastern Brazil

Figueiredo

Zacharias²,

Barbosa³

et al. 2008

Rev. Árvore

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-The exotic tree Muntingia calabura L. (Muntingiaceae), a species native to Central America, is used as fish feed and fiber and cellulose production in Brazil. This study was carried out in urban areas and verified the reproductive biology of this plant species. Flower and fruit morphology, compatibility system, reproductive phenology, pollination and frugivore animals, and germination of disseminated seeds were recorded by standard field and laboratory procedures. This tree is self-compatible and autonomously self-pollinated, with its flowers being mainly visited by bees and its fruits consumed by birds and bats. Germination of its dispersed seeds is fast and occurs at a high rate. The results of this work suggest that M. calabura is very adaptable to cultivated areas,thus being an excellent choice for urban reforestation. However, its reproductive characteristics place this plant as an invasive species with significant potential in southeastern Brazil.Keywords: Plant reproduction, heterogeneous reforestation and urban ecosystems. ECOLOGIA REPRODUTIVA DA ÁRVORE EXÓTICA Muntingia calabura L. (MUNTINGIACEAE) NO SUDESTE DO BRASIL RESUMO -A árvore exótica Muntingia calabura L. (Muntingiaceae) é nativa da América Central e, no

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Section: Turdus Leucomelas Muscicapidae 03mentioning

confidence: 88%

“…This may be corroborated by the fact that only studies dealing with seed physiology and seedling production have been published so far (LOPES et al, 2002;CASTRO and ALVARENGA, 1996;LAURA et al, 1994;LEITE and TAKAKI, 1991).…”

Section: Introductionmentioning

confidence: 91%

Reproductive ecology of the exotic tree Muntingia calabura L. (Muntingiaceae) in southeastern Brazil

Figueiredo

Zacharias²,

Barbosa³

et al. 2008

Rev. Árvore

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“…The mechanism involves photoreceptors, specifically phytochrome B, which responds to light stimuli. Phytochrome B acts by suppressing the production of abscisic acid, a key dormancy-maintaining factor, and simultaneously promoting the synthesis of gibberellins hormone [7,60,98], thereby facilitating germination in these small-sized seeds.…”

Section: D) Light Treatmentmentioning

confidence: 99%

Pre-Sowing Treatments on Seeds of Forest Tree Species to Overcome the Germination Problems

Kumar,

Sarvade,

Kumar

et al. 2024

AJEE

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Production of the quality planting material has got more emphasis under sub-mission on agroforestry (SMAF) with aiming to increase tree cover outside the forest area. Establishment of the tree species depends on the quality of the planting material, available soil, water for irrigation and the adopted protection measures. Most of the tree species get problem with germination of seed due to external and internal factors and causes seed dormancy. Different kind of pre-sowing treatments were tested and applied for the different kind of tree species by researchers of the forestry. Scarification (mechanical, acid), water soaking (hot/cold), the application of chemicals and plant growth regulators, or alternate wetting and drying prior to sowing effectively break seed dormancy and improve seed germination for producing required quality planting material. Auxins (IAA, IBA, 2-4D, 4-CPA), Gibberellic acid (GA3), Cytokinins (Kinetin, Zeatin, Benzyl adenine), Ethylene (Etheral) and Abscisic acid (Dormins, Phaseic Acid) are plant growth regulators also used in different concentrations for improving tree seed germination.

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“…However, in the current study, the germination percentage obtained at 25 °C (4.0%) decreased considerably while high-level germinations were provided similarly at 15 and 20 °C (77.3% and 78.7%). Leite and Takaki (2001) concluded that germination temperatures can vary based on species. Accordingly, Sarıbayır (2001) found the germination temperatures for the species V. olympicum, V. bombyciferum, and V. prusianum as 4 to 7 °C, which is distinctively different from the results of the current study.…”

Section: Optimum Germination Temperaturementioning

confidence: 99%

Investigation of vegetative properties and generative production of the potential ornamental and narrow endemic species Verbascum yurtkuranianum (Scrophulariaceae) for ex situ conservation

Erken

2021

BioRes

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Verbascum yurtkuranianum is a narrow endemic species occurring in a single location, the northern Bursa province (Turkey). It is an endangered and potentially ornamental plant. No conducted study on its life and biology, production, and aesthetic features is available. This study aimed to reveal its vegetative properties, seed characteristics, methods and requirements for seed germination, germination speed, and potential ornamental value so it can be conserved ex situ and produced. Verbascum yurtkuranianum has potential value as an ornamental plant regarding its aesthetic features as a flower. This study revealed that the total number of individuals in the species is 788. Without any treatment, 70.7% germination rate is achieved if the seeds are stored at 4 °C. The optimum germination temperature was from 15 to 20 °C (77.3% and 78.7%, respectively), and the photoperiod regulation for seed germination was 12/12 or 8/16 (light/dark) hours (74.7% and 76.0%, respectively). The most effective treatment to promote germination rate was found by implementation of 60 min ultrasonic waves (94.3%) or application of 120 min vacuum (95.3%). Germination occurred between 8 and 10 days. A parcel of ex situ conservation was constituted with the seedlings obtained from the germination studies.

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Phytochrome and temperature control of seed germination in Muntingia calabura L. (Elaeocarpaceae)

Cited by 13 publications

References 16 publications

Reproductive ecology of the exotic tree Muntingia calabura L. (Muntingiaceae) in southeastern Brazil

Reproductive ecology of the exotic tree Muntingia calabura L. (Muntingiaceae) in southeastern Brazil

Pre-Sowing Treatments on Seeds of Forest Tree Species to Overcome the Germination Problems

Investigation of vegetative properties and generative production of the potential ornamental and narrow endemic species Verbascum yurtkuranianum (Scrophulariaceae) for ex situ conservation

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