Recalcitrant morphological traits and intermediate storage behaviour in seeds of Mesua ferrea, a tropical evergreen species

Joshi, Geeta; Phartyal, Shyam S.; Khan, Matiyar Rahaman; Arunkumar, A. N.

doi:10.15258/sst.2015.43.1.13

Cited by 10 publications

(10 citation statements)

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“…Voss.) (Downie et al, 1998), the Mesua ferrea (Joshi, Phartyal, Khan, & Arunkumar, 2015), and also myrtaceans, such as the Guavira [Campomanesia adamantium (Cambess.) O.…”

Section: Discussionmentioning

confidence: 99%

Different Methods for Overcoming Integumental Dormancy during in vitro Germination of Red Araza Seeds

Freire¹,

Gardin²,

Baratto³

et al. 2016

JAS

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Red Araza, or Red Strawberry Guava (Psidium cattleianum Sabine) is a native Brazilian Atlantic Forest species of the Myrtaceae family, whose seeds exhibit integumental dormancy. Due to its importance to different industries worldwide, recent research efforts are seeking to expand this species' micropropagation processes using in vitro seedling germination, especially since in vitro micropropagation of adult plant material has, so far, been limited. This research effort evaluated different methods of overcoming integumental dormancy during in vitro germination of the Red Araza, so as to allow future micropropagation of the species. The seeds' emergence and vigor were evaluated based on mechanical and acid scarification, using different substrates and immersions in solutions with different levels of gibberellic acid (GA 3 ), and on the influence of the pre-immersion of seeds in water and sulfuric acid. The mechanical and acid scarification of the seeds, combined or separate, resulted in higher in vitro germination percentages and a higher germination rate index (GRI). Pre-immersion in distilled water (20 hours) also proved to be efficient for the germination of the Red Araza seed, with 76.2% of the seeds germinating and a higher speed of emergence (GRI = 0.18). When compared to a Murashige and Skoog (MS-zero) medium, sowing in a hydrophilic cotton substrate showed greater emergence and vigor, with approximately 70% of the seeds germinating. Treating the seeds by pre-immersing them in GA 3 turned out to be unnecessary. The methods used for overcoming integumental dormancy during in vitro germination of Red Araza seeds proved to be efficient, and could be used to develop micropropagation protocols of seminal origin for this species.

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“…Voss.) (Downie et al, 1998), the Mesua ferrea (Joshi, Phartyal, Khan, & Arunkumar, 2015), and also myrtaceans, such as the Guavira [Campomanesia adamantium (Cambess.) O.…”

Section: Discussionmentioning

confidence: 99%

Different Methods for Overcoming Integumental Dormancy during in vitro Germination of Red Araza Seeds

Freire¹,

Gardin²,

Baratto³

et al. 2016

JAS

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“…Among the groups that persist in the area, the panel that was demonstrated up to two decades ago did not change much afterward (Figure 1). The majority of the studies are basically focused on desiccation tolerance Corsato et al, 2012;Chapell et al, 2015;Amoedo and Ferraz, 2017;Gasparin et al, 2017;Subbiah et al, 2017;Chandra and Keshavkant, 2018;Plitta-Michalak et al, 2018), identification of storage behavior (Comin et al, 2014;Joshi et al, 2015;Vicente et al, 2016; 2017; Plitta-Michalak et al, 2018), analysis of deterioration and evaluation of techniques to extend the storage period (Barbedo and Cicero, 2000;Andréo et al, 2006;Bonjovani and Barbedo, 2008;Ballesteros et al, 2014;Lan et al, 2014;Parkhey et al, 2014;Garcia et al, 2015;Ming-Yue et al, 2015;Umarani et al, 2015;Araldi et al, 2016;Hossel et al, 2016;Félix et al, 2017), and rare studying other aspects such as seed maturation (Avila et al, 2009;Lamarca et al, 2013b;Mata et al, 2013;Schultz et al, 2014;Araldi and Coelho, 2015;Shibata and Coelho, 2016;Souza et al, 2018a, b), whose importance will be discussed later, and ecological (Ramlall et al, 2015;Vaz et al, 2016;Porto et al, 2018) or germinative aspects (Moothoo-Padayachie et al, 2016). An analysis, albeit superficial, of studies developed in Brazil and in the world shows small differences.…”

Section: The Research With Recalcitrant Seedsmentioning

confidence: 99%

A new approach towards the so-called recalcitrant seeds

Barbedo

2018

J. Seed Sci.

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Water is essential, irreplaceable, and indispensable for any kind of carbon-based-life metabolic activity. Water-dependent living beings are the expected pattern in nature. However, some organisms can survive for some time at a minimum water content, such as seeds of some species (orthodox seeds). Nevertheless, the expected standard life behavior is found in seeds of another group of species, the so-called recalcitrant seeds, which are sensitive to desiccation. A huge range of different behaviors can be found between these two groups, leading authors to consider that orthodoxy and recalcitrance is not an all-or-nothing situation. Notwithstanding, we are still too far from understanding the differences and similarities between all these kinds of seeds and this has been a serious barrier to the development of plant conservation technologies. A new approach to understanding the differences between these seeds is presented here based on seed maturation, environmental influences, and evolution. From this point of view, all kinds of seed behavior are contemplated and, consequently, some new perspectives are considered for the recalcitrant seed conservation technology, the most intensely desired technology nowadays in this area.

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“…O conhecimento sobre a sensibilidade à dessecação das sementes de espécies florestais é importante porque para determinar a melhor forma de armazenamento das mesmas (SCALON et al, 2012;SILVA et al, 2012;NERY et al, 2014;JOSHI et al, 2015), e são escassas para grande maioria das espécies de árvores no mundo (PRITCHARD et al, 2014. Nesse contexto, e visando contribuir com estudos de armazenamento de sementes, DAWS et al (2006) estudaram o comportamento de 104 espécies com relação à sensibilidade à dissecação e concluíram que existe uma tendência para que espécies com maior sensibilidade a dessecação apresentem maior razão entre o envoltório da semente e a massa da semente, "Seed Coat Ratio"-SCR, metodologia rápida e pratica descrita por PRITCHARD et al (2004) para pré-classificar as sementes para fins de armazenamento.…”

Section: Introductionunclassified

BIOMETRIA E ASPECTOS FISIOLÓGICOS DE FRUTOS E SEMENTES DE Dulacia candida (POEPP.) KUNTZE (OLACACEAE)

2015

Enciclopédia Biosfera

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RESUMODulacia candida (Poepp.) Kuntze (Olacaceae) é uma espécie arborescente com ampla distribuição na América do Sul. No Brasil ocorre nas regiões Norte, Nordeste e Centro-Oeste e apesar de sua extensa distribuição, é uma espécie pouco estudada, condição comum para numerosas espécies florestais nativas do país. Este estudo avaliou as características biométricas dos frutos e sementes, e a sensibilidade das sementes à dessecação utilizando o método SCR. Os frutos usados eram oriundos de florestas de várzea das margens do Riozinho do Andirá, em Sena Madureira, Acre (09°39'50,6"S; 68°02'54,5"W ). Na avaliação biométrica foram utilizados 200 frutos medidos e pesados com o auxílio de paquímetro e balança eletrônica. Dos frutos foram avaliados a massa total, comprimento, diâmetro e profundidade da polpa, e das sementes a massa, comprimento e diâmetro. Foi avaliada também a massa do endosperma e do tegumento. Para todas as variáveis avaliadas foram calculados, com o auxílio do programa estatístico BioEstat 5.0, os valores máximo e mínimo, média (m), desvio padrão (DP), coeficiente de variação (CV) e o coeficiente de correlação de Pearson (r). A previsão da sensibilidade à dessecação (P) utilizou a metodologia SCR. Os resultados obtidos indicam que a massa da polpa e das sementes está diretamente relacionada com a massa dos frutos, ou seja, frutos mais pesados apresentam maior massa de polpa e de sementes. As sementes possuem tolerância à dessecação, indicando que as mesmas são do tipo ortodoxa. PALAVRAS-CHAVE: Amazônia, dessecação, ortodoxas. ABSTRACTDulacia candida (Poepp.) Kuntze (Olacaceae) is a tree species with wide distribution in South America. It is found in the North, Northeast and Midwest regions of Brazil, and despite its wide distribution, is poorly studied, a common condition for numerous forest species native to the country. This study evaluated the biometric characteristics of fruits and seeds, and the sensitivity of seeds to desiccation using the SCR method. The fruits used were collected in várzea forests of the banks of the Riozinho Andirá in Sena Madureira, Acre (09°39'50,6 "S, 68°02'54,5"W). For the biometric evaluations 200 fruits were measured and weighted with the aid of a caliper and an electronic scale. The fruits were evaluated for their total mass, length, diameter and pulp depth, and the seeds for their mass, length and diameter. It was also evaluated the endosperm mass and the seed coat. The calculations of the maximum and minimum values, average (m), standard deviation (SD), coefficient of variation (CV) and the Pearson correlation coefficient (r) were done with the aid of the statistical program BioEstat 5.0. The prediction of sensitivity to desiccation (P) used the SCR methodology. The results indicate that the mass of the pulp and the seeds is directly related to the average fruit weight, i.e., heavier fruits have higher pulp and seeds mass. The seeds are desiccation tolerant, indicating that they are of the orthodox type.

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Recalcitrant morphological traits and intermediate storage behaviour in seeds of Mesua ferrea, a tropical evergreen species

Cited by 10 publications

References 0 publications

Different Methods for Overcoming Integumental Dormancy during in vitro Germination of Red Araza Seeds

Different Methods for Overcoming Integumental Dormancy during in vitro Germination of Red Araza Seeds

A new approach towards the so-called recalcitrant seeds

BIOMETRIA E ASPECTOS FISIOLÓGICOS DE FRUTOS E SEMENTES DE Dulacia candida (POEPP.) KUNTZE (OLACACEAE)

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