&lt;b&gt;Priming and stress under high humidity and temperature on the physiological quality of &lt;i&gt;Brachiaria brizantha&lt;/i&gt; cv. MG-5 seeds

Batista, Thiago Barbosa; Cardoso, Eliana Duarte; Binotti, Flávio Ferreira da Silva; Costa, Edílson; Sá, Marco Eustáquio de

doi:10.4025/actasciagron.v38i1.26021

Cited by 18 publications

(22 citation statements)

References 10 publications

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“…The benefits of priming by direct immersion for U. brizantha seeds have already been reported in the literature, both with water or other chemical agents (BATISTA et al, 2016a;BATISTA et al, 2016b). In this study, there was an additional benefit to the effect of priming using glucose during conditioning by direct immersion under germination.…”

Section: Resultssupporting

confidence: 62%

“…Although not used on a large scale for major crops, seed priming has application in germplasm banks for small seed numbers (SILVA et al, 2016). Studies found in the literature have demonstrated that the priming of Brachiaria seeds increases the number of germinated seeds (CARDOSO et al, 2014), speed index (BINOTTI et al, 2014), and resistance to thermal stress (BATISTA et al, 2016a).…”

Section: Introductionmentioning

confidence: 99%

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Priming of Brachiaria Seeds With Different Sugar Sources and Concentrations

Batista

Binotti

et al. 2018

Rev. Caatinga

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Seed priming is a practice for improving the expression of seed physiological potential. Such technique consists of synchronizing and reducing the time of seed germination by controlled hydration. The aim of this study was to evaluate the effect of seed-priming with different sugar sources and concentrations on the physiological quality Urochloa brizantha seeds and initial seedling performance. Before treating, seeds were scarified chemically with concentrated sulphuric acid (H2SO4) for 5 minutes to overcome physical dormancy. The experimental design was completely randomized in a 3 x 6 factorial scheme consisting of priming using three sugar sources (glucose, sucrose, and maltose) and six concentrations (zero [water control], 2%, 5%, 10%, 15%, and 20%), with four replicates. The seeds were primed by direct immersion for 2 hours at 25 ºC and, after hydration, they were dried for moisture equilibrium recovery. Seed germination, vigor, viability, and initial seedling growth were evaluated. The results showed that glucose was the source able to promote beneficial effects on the germination of U. brizantha cv. MG-5 seeds. Moreover, the supply of glucose at the concentrations of 2 and 5% for physiological conditioning increased seedling dry phytomass.

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Section: Resultssupporting

confidence: 62%

Section: Introductionmentioning

confidence: 99%

Priming of Brachiaria Seeds With Different Sugar Sources and Concentrations

Batista

Binotti

et al. 2018

Rev. Caatinga

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“…Priming may be performed with the use of substances that contribute to the expression of the seed physiological potential (Batista et al 2016). Seed priming may promote more balanced germination rates and higher germination speed, in addition to faster seedling growth under adverse conditions, for instance, under abiotic stress (Arif et al 2014).…”

Section: Palavras-chavementioning

confidence: 99%

“…However, few studies have been conducted on seed priming using the amino acid phenylalanine, which is a precursor of phenolic compounds that increase in response to different types of stress, e.g., related to the plant defense systems and adaptation to adverse situations (Stangarlin et al 2011). According to Batista et al (2016), priming with KNO 3 and Ca(NO 3 ) 2 enhance physiological seed quality, producing seeds with high tolerance to stress under high temperature.…”

Section: Palavras-chavementioning

confidence: 99%

Priming effect on the physiological potential of maize seeds under abiotic stress1

Gouveia

Binotti

Costa

2017

Pesqui. Agropecu. Trop.

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Abiotic stress directly influences seed performance, so poor-vigor seeds under adverse conditions tend to show lower germination speed and rate. By controlling the hydration level of seeds (i.e., priming) with the addition of chemical agents, it is possible to elicit the maximum physiological potential of seeds, even under stress conditions. This study aimed to evaluate the priming effect of different chemical agents on the physiological potential of maize seeds under abiotic stress (polyethylene glycol induced water stress, hypoxia, low temperature and salt stress after controlled deterioration). The experimental design was completely randomized, in a 5 x 2 factorial scheme, consisting of different chemical agents used to hydrate the seeds [control without priming; control primed with water; calcium nitrate (0.2 %); amino acid L-phenylalanine (0.05 %); amino acid L-phenylalanine (0.5 %) + calcium nitrate (0.2 %)] and 2 seed lots, with four replicates. Priming with calcium nitrate lead to a greater germination and higher emergence rate of the seedlings under suboptimal temperature conditions, and seeds that underwent controlled deterioration showed greater germination levels with the use of calcium nitrate + phenylalanine in the priming process, regardless of the lot used. In general, seed priming allowed a greater expression of seed vigor, even though an interaction with lots was observed in some variables.

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“…The calcium nitrate solution can also be used in seed pretreatment to improve the germination process and act to overcome dormancy in some seeds (Silva et al, 2017). For example, in Brachiaria seeds, the dormancy is related to several factors, especially physical properties, and the priming with calcium nitrate resulted in higher tolerance of Brachiaria brizantha seeds to high humidity and high-temperature stress (Batista et al, 2016), thus being efficient in overcoming dormancy.…”

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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<b>Priming and stress under high humidity and temperature on the physiological quality of <i>Brachiaria brizantha</i> cv. MG-5 seeds

Cited by 18 publications

References 10 publications

Priming of Brachiaria Seeds With Different Sugar Sources and Concentrations

Priming of Brachiaria Seeds With Different Sugar Sources and Concentrations

Priming effect on the physiological potential of maize seeds under abiotic stress1

Calcium Nitrate Priming Increases the Germination Rate of Eggplant Seeds

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