Hidrocondicionamento de Parkia pendula [Benth ex Walp]: sementes com dormência física de árvore da Amazônia

Pinedo, Gina Janet Vargas; Ferraz, Isolde Dorothea Kossmann

doi:10.1590/s0100-67622008000100006

Cited by 18 publications

(10 citation statements)

References 12 publications

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“…When set to soak for an extended period, the seeds may suffer irreversible damage to the membrane system, and consequent leaching of cellular contents that negatively affects germination. Similar to Brauna, Parkia pendula seeds do not seem to tolerate long periods of soaking, and a reduction in germinability and percentages of normal seedlings can be observed when soaked for 24 h after the heat treatment (Pinedo and Ferraz, 2008). These authors found that a soaking greater than 20% of their mass after about 4h significantly reduced the emergence of seedlings.…”

Section: Resultsmentioning

confidence: 85%

Influence of pre-germination treatments on germination seed in Melanoxylon brauna Schott

Freire¹,

Sousa²,

AtaÃde³

et al. 2017

Afr. J. Agric. Res.

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This study evaluated the presence of integument dormancy in Melanoxylon brauna seeds by testing the influence of nine pre-germination treatments on seed germination compared to a control (no pregermination) treatment. Pre-germination treatments include; immersion in sulfuric acid for 5 min, 10 min, 15 min and 30 min, hot water at 80°C without soaking, hot water at 80°C with soaking for 30 min, 90 min, 24 h, and mechanical scarification. The experiment consisted of a completely randomized design, with four replicates and 25 seeds per experimental unit. Percentage germination, germination speed, number of normal and abnormal seedlings, and mortality rate were evaluated. Seeds began to germinate at four days, and germination varied from 33 to 89%, with the highest percentage found in hot water with or without soaking for 30 min, which not differed statistically from control. Immersion in sulfuric acid for longer than 10 min reduced seed germination and increased mortality rate. We conclude that M. brauna seeds do not undergo seed dormancy, and there is no need to apply pregerminating treatments to its seeds.

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Section: Resultsmentioning

confidence: 85%

Influence of pre-germination treatments on germination seed in Melanoxylon brauna Schott

Freire¹,

Sousa²,

AtaÃde³

et al. 2017

Afr. J. Agric. Res.

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“…Combinations of probabilities of independent Student's t tests was done using the inverse Chi-square method [24,25].…”

Section: Data Analysesmentioning

confidence: 99%

Imbibition, Germination, and Early Seedling Growth Responses of Light Purple and Yellow Seeds of Red Clover to Distilled Water, Sodium Chloride, and Nutrient Solution

Costa

Dias

2019

Sci

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The seeds of red clover are heteromorphic and two color morphs can be visually recognized, light purple and yellow, resulting from heterozygosity and recessive homozygosity at two loci. Here, we report the responses of seed imbibition, seed germination, and early seedling growth of the two morphs to distilled water, sodium chloride, and complete nutrient solution. The sensitivityof red clover seeds to treatments increased with the stage of development in what seems to be a cumulative process. No differences were found in seed imbibition between morphs or between treatments. In seedling growth, on the contrary, treatments were always effective, but differences between morphs were only observed in seeds that were treated with nutrient solution, whereas in the intermediate stage of seed germination, the effects by treatments were observed together with the appearance of differences between morphs in distilled water and in the treatment by sodium chloride solution. Simultaneously, the superior performance of the yellow morph that was found in germination, which appears to be a trait stable across cultivars of red clover seeds, turned into a superior performance of the light purple morph in seedling growth.

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“…Priming reduces germination time, improves emergence uniformity and vigor of seedlings. The controlled hydration of the seeds can be accomplished by hydropriming or through osmotic solutions (Pinedo & Ferraz, 2008).…”

Section: Introductionmentioning

confidence: 99%

Calcium Nitrate Priming Increases the Germination Rate of Eggplant Seeds

Salles¹,

Lima²,

Binotti³

et al. 2019

JAS

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The priming may promote greater expression of the physiological potential of the seeds and contribute to the germination process under adverse environmental conditions. The objective of this study was to evaluate the physiological potential of eggplant seeds primed with different chemical agents and exposed to adverse temperatures. Seeds were subjected to priming with five chemical agents [unprimed (control); water (hydropriming); calcium nitrate (0.2%); amino acid L-phenylalanine (0.05%); L-phenylalanine (0.05%) + calcium nitrate (0.2%)] and at temperatures of 15, 25, 35 and 41 ºC, considering a completely randomized design in a factorial arrangement (5 × 4) with four replicates. The first count of radicle emission and germination, final radicle emission, seed germination, radicle emission rate index, mean radicle emission time, and seedling dry mass were measured. Germination process of eggplant seeds was completely inhibited at 41 ºC, and the optimal temperature for seed germination is 25 ºC. Calcium nitrate priming potentiates the seed germination process, resulting in higher radicle emission rate index and higher germination rate. Low temperature (15 ºC) has greater interference in the germination rate of eggplant seeds when compared to high temperature (35 ºC).

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Hidrocondicionamento de Parkia pendula [Benth ex Walp]: sementes com dormência física de árvore da Amazônia

Cited by 18 publications

References 12 publications

Influence of pre-germination treatments on germination seed in Melanoxylon brauna Schott

Influence of pre-germination treatments on germination seed in Melanoxylon brauna Schott

Imbibition, Germination, and Early Seedling Growth Responses of Light Purple and Yellow Seeds of Red Clover to Distilled Water, Sodium Chloride, and Nutrient Solution

Calcium Nitrate Priming Increases the Germination Rate of Eggplant Seeds

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