Physiological maturation in seeds of Lophantera lactescens Ducke

Silva, Patrícia Cândido da Cruz; Alves, Edna Ursulino; Araújo, Luciana Rodrigues de; Cruz, José de Oliveira; Silva, Natália Cândido da Cruz

doi:10.5935/1806-6690.20190037

Cited by 4 publications

References 2 publications

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“…Styrax tonkinensis seeds grew rapidly and reached the maximum size in a short time (from 30 to 70 DAF), sharing a similar dynamic growth tendency with Prunus sibirica and Lophantera lactescens , which are widely used for biodiesel and ornamental planting (Wang et al, 2019; Silva et al, 2019). The volume and surface area of the seed remained stable after 70 DAF, whereas that of the fruit increased continually (Table S1).…”

Section: Discussionmentioning

confidence: 99%

The nutrient distribution in the continuum of the pericarp, seed coat, and kernel during Styrax tonkinensis fruit development

Qikui

Zhang

Peng

et al. 2019

PeerJ

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BackgroundStyrax tonkinensis is a great potential biofuel as the species contains seeds with a particularly high oil content. Understanding the nutrient distribution in different parts of the fruit is imperative for the development and enhancement of S. tonkinensis as a biodiesel feedstock.MethodsFrom 30 to 140 days after flowering (DAF), the development of S. tonkinensis fruit was tracked. The morphology change, nutrient content, and activity of associated enzymes in the continuum of the pericarp, seed coat, and kernel were analyzed.ResultsBetween 30 and 70 DAF, the main locus of dry matter deposition shifted from the seed coat to the kernel. The water content within the pericarp remained high throughout development, but at the end (130 DAF later) decreased rapidly. The water content within both the seed coat and the kernel consistently declined over the course of the fruit development (30–110 DAF). Between 70 and 80 DAF, the deposition centers for sugar, starch, protein, potassium, and magnesium was transferred to the kernel from either the pericarp or the seed coat. The calcium deposition center was transferred first from pericarp to the seed coat and then to the kernel before it was returned to the pericarp. The sucrose to hexose ratio in the seed coat increased between 30 and 80 DAF, correlating with the accumulation of total soluble sugar, starch, and protein. In the pericarp, the sucrose to hexose ratio peaked at 40 and 100 DAF, correlating with the reserve deposition in the following 20–30 days. After 30 DAF, the chlorophyll concentration of both the pericarp and the seed coat dropped. The maternal unit (the pericarp and the seed coat) in fruit showed a significant positive linear relationship between chlorophyll b/a and the concentration of total soluble sugar. The potassium content had significant positive correlation with starch (ρ = 0.673, p = 0.0164), oil (ρ = 0.915, p = 0.000203), and protein content (ρ = 0.814, p = 0.00128), respectively. The concentration of magnesium had significant positive correlation with starch (ρ = 0.705, p = 0.0104), oil (ρ = 0.913, p = 0.000228), and protein content (ρ = 0.896, p = 0.0000786), respectively. Calcium content had a significant correlation with soluble sugar content (ρ = 0.585, p = 0.0457).ConclusionsDuring the fruit development of S. tonkinensis, the maternal unit, that is, the pericarp and seed coat, may act a nutrient buffer storage area between the mother tree and the kernel. The stage of 70–80 DAF is an important time in the nutrient distribution in the continuum of the pericarp, seed coat, and kernel. Our results described the metabolic dynamics of the continuum of the pericarp, seed coat, and kernel and the contribution that a seed with high oil content offers to biofuel.

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Section: Discussionmentioning

confidence: 99%

The nutrient distribution in the continuum of the pericarp, seed coat, and kernel during Styrax tonkinensis fruit development

Qikui

Zhang

Peng

et al. 2019

PeerJ

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“…The oscillation in the biometric variables of pod seeds is common, where there was a maximum increase and a reduction in these characteristics, being associated with the process of dehydration and the point of physiological maturity of the seed. Thus, this rapid growth comes from the cell multiplication that makes up the reserves of the embryonic axis and, when reaching the maximum point of accumulation of dry matter, the seed begins the dehydration process and the end of the maturation process (Silva et al, 2019). This oscillation is linked to the increase in the dry mass of the seeds, due to the accumulation of translocated metabolites of the plant during maturation (Kambhampati et al, 2020).…”

Section: Discussionmentioning

confidence: 99%

“…Thus, stored reserves are degraded to nurture the development of the embryonic axis, resulting in more vigorous and higher quality seedlings (Moreira et al, 2019).These results are indicative of the maximum physiological quality (vigor) of the pod seeds, since there was a maximum accumulation of reserves, enabling the development of the embryonic axis and obtaining more vigorous seedlings. Thus, after reaching the ideal point of physiological maturity, the seed accumulates reserves that will be mobilized and degraded to provide maximum expression of vigor during the initial growth of the seedlings (Silva et al, 2019).…”

Section: Discussionmentioning

confidence: 99%

Physiology of Growth and Development of Fruits and Seeds of Common Beans

Ayres

Nóbrega

Bruno

et al. 2021

JAS

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Common beans are one of the most economically important legumes in the world. The determination of the ideal harvesting period may coincide with the maximum seed quality and vigor. Thus, the objective was to evaluate the physiology of growth and development of fruits, seeds and seedlings of two cultivars of common beans. To this end, two cultivars of common beans were used: the “Macarrão Trepador” and “Rasteiro Fartura” harvested every five days after anthesis (DAA). The pods were harvested and sent to the laboratory for seed analysis and extraction. In the laboratory, biometric characteristics of fruits and seeds, physiological quality (germination and vigor) and chemical composition of seeds were evaluated. The physiological maturity of “Macarrão Trepador” and “Rasteiro Fartura” cultivars occurred at 35 DAA, during which the seeds had the maximum dry matter and the minimum water content. The chemical composition of the seeds of both cultivars was similar, except for lignin, whose content was higher in “Rasteiro Fartura” cultivar at 25 DAA. The color and dry mass of fruits and seeds, germination percentage, first germination count, germination speed index and average germination time are the indicators that help in determining the physiological maturity point.

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Physiological maturation in seeds of Lophantera lactescens Ducke

Cited by 4 publications

References 2 publications

The nutrient distribution in the continuum of the pericarp, seed coat, and kernel during Styrax tonkinensis fruit development

The nutrient distribution in the continuum of the pericarp, seed coat, and kernel during Styrax tonkinensis fruit development

Physiology of Growth and Development of Fruits and Seeds of Common Beans

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