Germinação e vigor de sementes de chia (Salvia hispanica L. - Lamiaceae) sob diferentes temperaturas e condições de luz

Neves, Luiz Augusto Salles das; Abbad, Marisa Aparecida Binotto; Viana, Bruna Boucinha

doi:10.1590/1983-084x/15_043

Cited by 17 publications

(20 citation statements)

References 14 publications

(19 reference statements)

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“…The highest values of dry mass were obtained at a temperature of 20 °C in the presence (3.87 mg) and absence (3.75 mg) of light. Similar results were found by Stefanello et al (2015) for seeds of the chia (Salvia hispanica L.) under white light at a temperature of 20 ºC. However, in another study the dry mass of seedlings of niger (Guizotia abyssinica Cass.)…”

Section: Experiments I: Effect Of Light and Temperature On The Physiolsupporting

confidence: 82%

“…In the first germination count (Table 1) the percentage of normal seedlings was higher in the presence of light at the temperatures of 20 and 25 ºC (54 and 52%, respectively) and in the absence of light at 20 ºC (54%). Similar results under these conditions were found by Koefender et al (2009) for the common marigold (Calendula officinalis), Costa et al (2010) for green pepper basil (Ocimum selloi), Orzari et al (2013) for corda-de-viola (Ipomoea grandifolia), Khan et al (2014) for basil (Ocimum basilicum) and Stefanello et al (2015) for chia (Salvia hispanica). According to Carvalho and Nakagawa (2012), temperature strongly influences germination, and the optimal temperature is where the seed expresses its maximum germination potential in the least amount of time.…”

Section: Experiments I: Effect Of Light and Temperature On The Physiolsupporting

confidence: 74%

“…(MORAL et al, 2015), Euryodendron excelsum H. T. Chang (SHEN et al, 2015) and Salvia hispanica L. (STEFANELLO et al, 2015).…”

Section: Experiments I: Effect Of Light and Temperature On The Physiolmentioning

confidence: 99%

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Germination and vigor of linseed seeds under different conditions of light, temperature and water stress

Viana

Neves

2017

SCA

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Linseed (Linum usitatissimum L.), cultivated from seeds, is one of the oldest plants domesticated by humans and is popularly used as a medicine. It can be used as the raw material to produce oil and bran because it has high lipids content, fiber and proteins. Based on the economic potential of this species and the need for more information about its physiology, the goal of this study was to analyze the effects of light, temperature and water stress on the germination and vigor of linseed seeds. In experiment I the seeds were sown on paper at constant temperatures of 15, 20, 25 and 30 ºC in the presence and absence of light. In experiment II, the seeds were placed on paper germitest soaked in solutions of polyethylene glycol (PEG 6000) at osmotic potentials corresponding to zero, -0.10, -0.20, -0.30, -0.40, -0.50 and -0.60 MPa. To evaluate the physiological potential, the following tests were made: germination, first germination count, length and dry mass of seedlings, and water stress. It was found that the highest percentages of germination and vigor occurred at a constant temperature of 20 °C, both in the presence and absence of light. The reduction of the osmotic potential of the substrate promoted a significant decrease in the germination and vigor of the linseed seeds. Osmotic potentials equal or less than -0.30 MPa were harmful to germination and there was no normal seedling development starting at -0.50 MPa. Key words: Linum usitatissimum. Physiological quality. Polyethylene glycol. ResumoA linhaça (Linum usitatissimum L.), cultivada através de sementes, é uma das plantas mais antigas domesticadas pelo homem, utilizada popularmente como medicamento. Pode ser empregada como matéria-prima na produção de óleo e farelo por possuir alto teor de lipídios, fibras e proteínas. Diante do potencial econômico da espécie e da necessidade de informações sobre sua qualidade fisiológica, objetivou-se analisar o efeito da luz, temperatura e estresse hídrico na germinação e no vigor de sementes de linhaça. No experimento I, as sementes foram semeadas sobre papel nas temperaturas constantes de 15, 20, 25 e 30 ºC na presença e ausência de luz. No experimento II, as sementes foram colocadas sobre papel embebido em soluções de polietileno glicol (PEG 6000) nos potenciais osmóticos correspondentes a zero ; -0,10; -0,20; -0,30; -0,40; -0,50; -0,60 MPa. Para avaliação do potencial fisiológico foram realizados os testes de: germinação, primeira contagem de germinação, comprimento e massa seca de plântulas e estresse hídrico. As maiores percentagens de germinação e vigor ocorreram quando da temperatura constante de 20 °C, tanto na presença quanto na ausência de luz. A redução do potencial osmótico do substrato causou decréscimo significativo na germinação e no vigor das sementes de linhaça. Potenciais osmóticos iguais ou inferiores a -0,30 MPa foram prejudiciais à germinação não havendo desenvolvimento de plântulas normais a partir de -0,50 MPa. Palavras-chave: Linum usitatissimum. Qualidade fisiológica. Polietileno glicol.

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Section: Experiments I: Effect Of Light and Temperature On The Physiolsupporting

confidence: 82%

Section: Experiments I: Effect Of Light and Temperature On The Physiolsupporting

confidence: 74%

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Germination and vigor of linseed seeds under different conditions of light, temperature and water stress

Viana

Neves

2017

SCA

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“…After sowing, the plastic boxes (gerbox) were kept in BOD (Biochemical Oxygen Demand), at constant temperature of 20 °C in the presence of light (Stefanello et al, 2015). Counts were performed at 7 and 14 days when the test was completed.…”

Section: Methodsmentioning

confidence: 99%

Yield and Physical and Physiological Quality of Salvia hispanica L. Seeds Grown at Different Sowing Dates

Goergen¹,

Nunes²,

Lago³

et al. 2018

JAS

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Variations in the sowing date of chia (Salvia hispanica L.) reflect directly on the physiological potential of the produced seeds. This study aimed to analyze the yield and the physical and physiological quality of seeds from the main stem and branches of Salvia hispanica plants grown at different sowing dates. A field experiment was conducted in the crop year of 2016/2017 in five sowing dates (16/09/22, 16/10/28, 17/01/03, 17/02/08 and 17/03/24) in a randomized complete block design with four replicates. Harvest at each sowing date was done when 80% of the leaves of each plant exhibited a darker color, indicating that they were dry. Seed yield was determined in each plant compartment (main stem and branches) and final ear length (cm) and diameter (cm) were also measured at all sowing dates. The following physical and physiological tests were performed to determine seed quality: water content, mass of one thousand seeds, germination test, first count germination, length (root and hypocotyl) and dry matter of the seedlings. Chia can be sown from September to February providing seed yield with high physical and physiological quality. The physical and physiological quality of the chia seeds does not differ between main stem and branches. In late sowing, there is the risk of frost occurrence what may impair the physiological quality and the yield of chia seeds. The best sowing month for obtaining higher yield of chia seeds in a south subtropical region is January.

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“…The gerboxs were kept in germinator at 20 °C. Germination counts were performed at four and seven days (Adapted from Stefanello, Neves, Abbad, & Viana, 2015). The results were expressed as mean percentage of normal seedlings for each lot.…”

Section: Methodsmentioning

confidence: 99%

Electrical Conductivity Test to Evaluate the Physiological Quality of Salvia hispanica L. Seeds

Radke¹,

Maass²,

Pieper³

et al. 2018

JAS

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Chia (Salvia hispanica L.) is an herbaceous plant that belongs to the Lamiaceae family. Seed vigor testing is an important component of quality control programs, and electrical conductivity test is a possible option in this process. The objective of this study was to identify a methodology of electrical conductivity test to stratify chia seed lots at vigor level according to the emergence of seedlings. Six lots of chia seeds were used in this study. The seeds were exposed to the following determinations: first germination count, germination, emergence speed index, emergence, aerial and root length, aerial and root dry matter, and electrical conductivity at 25, 50 and 75 mL during 1, 2, 4, 6, 8 and 24 hours of soaking in water. The electrical conductivity test in the combination of 25 seeds using 50 mL of water in 6-hour of soaking period, as well as the combination of 50 seeds using 50 mL of water for 24 hours of soaking, were efficient in the stratification of chia seeds in different levels of vigor.

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Germinação e vigor de sementes de chia (Salvia hispanica L. - Lamiaceae) sob diferentes temperaturas e condições de luz

Cited by 17 publications

References 14 publications

Germination and vigor of linseed seeds under different conditions of light, temperature and water stress

Germination and vigor of linseed seeds under different conditions of light, temperature and water stress

Yield and Physical and Physiological Quality of Salvia hispanica L. Seeds Grown at Different Sowing Dates

Electrical Conductivity Test to Evaluate the Physiological Quality of Salvia hispanica L. Seeds

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