Germination responses of Medicago ruthenica seeds to salinity, alkalinity, and temperature

Guan, Bo; Zhou, Daowei; Zhang, H.; Tian, Yu; Japhet, Wisdom; Wang, Ping

doi:10.1016/j.jaridenv.2008.08.009

Cited by 99 publications

(64 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Under high saline conditions, seed survival rather than germination is a more appropriate mechanism for plants to establish successfully, because the recovery of germination occurs when high salinity is alleviated (Guan et al, 2009). Thus, for the successful germination of G. cracoviense seeds, a high Ca 2+ concentration on the soil surface and at shallow soil depths needs to be diluted by precipitation or by melt water from snow.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

The Effect of Temperature, Light and Calcium Carbonate on Seed Germination and Radicle Growth of the Polycarpic Perennial Galium cracoviense (Rubiaceae), a Narrow Endemic Species From Southern Poland

Kołodziejek¹,

Patykowski²

2015

Acta Biologica Cracoviensia S. Botanica

View full text Add to dashboard Cite

Germination responses of Galium cracoviense Ehrend. (Rubiaceae), a narrow endemic species from southern Poland, were tested in light and dark conditions at three constant temperatures (5, 10, or 22°C), before and after cold-wet stratification. Additionally, seeds were germinated under different calcium carbonate (CaCO 3 ) concentrations (1, 5, 10, 15, 20, or 25 mM/L CaCO 3 ) at 22°C in light. The high germination capacity of seeds incubated at different temperatures, shortly after collection, already suggested the absence of dormancy in this species. Thus, the seeds are ready to germinate immediately in the field when water resources are available and the temperature is adequate. Light was a significant factor for G. cracoviense; more seeds germinated in light than in darkness at all temperatures tested. Cold stratification decreased germination especially at higher temperatures. The light requirement for G. cracoviense germination ensures their successful germination on or near the soil surface, and in cracks and crevices in limestone, when temperature and edaphic conditions are favourable. Seeds of this species show temperature enforced dormancy throughout the winter. Germination was significantly affected by calcium carbonate. Non-germinated seeds germinated well after being transferred from higher CaCO 3 concentrations to distilled water. The results indicate that the seeds of this species can endure CaCO 3 stress without losing their viability and start germination once CaCO 3 concentration is reduced. It can be concluded that the seeds of this species require lower Ca 2+ ion concentration, moderate temperatures and the presence of light to germinate. K Ke ey y w wo or rd ds s: : Calcium carbonate, dormancy, rare species, recovery.

show abstract

Section: Discussionmentioning

confidence: 99%

“…Alkaline salts have a more severe effect on plant growth than neutral salts (Shi and Yin, 1993;Tang and Turner, 1999). Prolonged elevated Ca 2+ concentration may also pose a stress to seed germination although this has received less attention in the literature (Guan et al, 2009;Parida and Das, 2005;Shi et al, 1998).…”

Section: Introductionmentioning

confidence: 99%

The Effect of Temperature, Light and Calcium Carbonate on Seed Germination and Radicle Growth of the Polycarpic Perennial Galium cracoviense (Rubiaceae), a Narrow Endemic Species From Southern Poland

Kołodziejek¹,

Patykowski²

2015

Acta Biologica Cracoviensia S. Botanica

View full text Add to dashboard Cite

show abstract

“…Seed germination in weeds is influenced by many environmental factors, such as temperature, pH, light, salinity, and moisture (Chauhan & Johnson, 2008a,b). Temperature plays a major role in determining the periodicity of seed germination and the distributions of species (Guan et al, 2009). Alvarado & Bradford.…”

Section: Introductionmentioning

confidence: 99%

Seed germination and seedling emergence of velvetleaf (Abutilon theophrasti) and Barnyardgrass (Echinochloa crus-galli)

2013

View full text Add to dashboard Cite

-Abutilon theophrasti and Barnyardgrass (Echinochloa crus-galli) are major weeds that affect cropping systems worldwide. Laboratory and greenhouse studies were conducted to determine the effects of temperature, pH, water and salinity stress, and planting depth on seed germination and seedling emergence of Velvetleaf and Barnyardgrass. For Velvetleaf, the base, optimum and ceiling germination temperatures were estimated as 5, 35 and 48 o C, respectively. Seed germination was sensitive to drought stress and completely inhibited by a potential of -0.6 MPa, but it was tolerant to salinity. Salinity stress up to 45 mM had no effect on the germination of Velvetleaf, but germination decreased with increasing salt concentration. Drought and salinity levels for 50% inhibition of maximum germination were -0.3 MPa and 110 mM, respectively. Seed germination of Velvetleaf was tolerant to a wide range of pH levels. For Barnyardgrass, the base, optimum and ceiling germination temperatures were estimated as 5, 38 and 45 o C, respectively. Seed germination was tolerant to drought stress and completely inhibited by a potential of -1.0 MPa. Salinity stress up to 250 mM had no effect on seed germination. Drought and salinity levels for 50% inhibition of maximum germination were -0.5 MPa and 307 mM, respectively. A high percentage of seed germination was observed at pH=5 and decreased to 61.5% at acidic medium (pH 4) and to 11% at alkaline medium (pH 9). Maximum seedling emergence of Velvetleaf and Barnyardgrass occurred when the seeds were placed on the surface of the soil or at a depth of 1 cm.Keywords: pH, planting depth, seed germination, temperature, weed.RESUMO -Abutilon theophrasti e Echinochloa crus-galli são as principais plantas daninhas que afetam os sistemas de cultivo em muitas partes do mundo. Estudos em laboratório e em casa de vegetação foram conduzidos para determinar os efeitos da temperatura, pH da água e estresse salino e da profundidade de semeadura na germinação e na emergência das plântulas de A. theophrasti e E. crus-galli. Para A. theophrasti, as temperaturas de base, ótima e de teto de germinação foram estimadas em 5, 35 e 48 o C, respectivamente. A germinação das sementes foi sensível ao estresse hídrico e inibida completamente por um potencial de -0,6 MPa, mas foi tolerante à salinidade. Estresse salino de até 45 mM não teve nenhum efeito sobre a germinação de A. theophrasti, porém esta diminuiu com o aumento da concentração salina. Os níveis de seca e de salinidade para 50% de inibição da germinação máxima foram de -0,3 MPa e 110 mM, respectivamente. A germinação das sementes de A. theophrasti foi tolerante a uma vasta gama de níveis de pH. Para E. crus-galli, as temperaturas de base, ótima e de teto de germinação foram estimadas em 5, 38 e 45 o C, respectivamente. A germinação das sementes foi tolerante ao estresse hídrico e inibida completamente a um potencial de -1,0 MPa. Estresse salino de até 250 mM não teve efeito sobre a germinação das sementes. Os níveis de seca e de salinidade para 50% ...

show abstract

“…Inhibition of germination due to salt stress has been reported in Kochia prostrata and Kochia scoparia (Orlovsky et al, 2011), Safflower (Kaya et al, 2003), Corn (Zhang and Zhao, 2011), and Medicago ruthenica (Guan et al, 2009). The decreasing germination due to increasing salinity or alkalinity can be correlated to the nature of the stress to reduce imbibition of water due to lowered osmotic potentials of the medium and causes changes in metabolic activity.…”

Section: Wmsr Srdp Srue and Sldwmentioning

confidence: 98%

Effects of Na2CO3 on seed germination, seed reserve utilizationand seedling growth in bitter vetch (Vicia ervilia L.)

Sepehri

Saman

Bayat

2016

View full text Add to dashboard Cite

Alkalinity is one of the main limiting factors of seed germination in alkaline soils. The aim of this study was to evaluate the effects of Na 2 CO 3 levels (0, 5, 10, 15, 20 and 25 mM) on seed germination, seed reserve utilization and seedling vigour of three local bitter vetch cultivars (Buinzahra, Shahreza and Tarom). The results indicated that increasing Na 2 CO 3 concentrations caused a decrease in germination percentage (GP), germination rate (GR), seedling length, seedling dry weight (SLDW) and seed reserve utilization efficiency (SRUE). The rate of reduction in shoot length in comparison with the control in different concentrations of Na 2 CO 3 was detected from Buinzahra as 30-92%, Shahreza 39-97% and Tarom 13-83%. Decrease in root length was more than shoot length in all the cultivars at each Na 2 CO 3 level, as compared to the control. The weight of mobilized seed reserve (WMSR) and seed reserve depletion percentage (SRDP) decreased with increasing Na 2 CO 3 levels up to 10 mM in Buinzahra and Tarom cultivars and up to 15 mM in Shahreza. WMSR and SRDP then rapidly raised with higher alkalinity levels. These results suggest that reduction of seed germination and decline in seedling dry weight in response to alkalinity stress is a consequence of decline in seed reserve utilization efficiency.

show abstract

Germination responses of Medicago ruthenica seeds to salinity, alkalinity, and temperature

Cited by 99 publications

References 15 publications

The Effect of Temperature, Light and Calcium Carbonate on Seed Germination and Radicle Growth of the Polycarpic Perennial Galium cracoviense (Rubiaceae), a Narrow Endemic Species From Southern Poland

The Effect of Temperature, Light and Calcium Carbonate on Seed Germination and Radicle Growth of the Polycarpic Perennial Galium cracoviense (Rubiaceae), a Narrow Endemic Species From Southern Poland

Seed germination and seedling emergence of velvetleaf (Abutilon theophrasti) and Barnyardgrass (Echinochloa crus-galli)

Effects of Na2CO3 on seed germination, seed reserve utilizationand seedling growth in bitter vetch (Vicia ervilia L.)

Contact Info

Product

Resources

About