Quantification of the Effect of Environmental Factors on Seed Germination and Seedling Growth of Eruca (Eruca sativa) Using Mathematical Models

Bakhshandeh, Esmaeil; Pirdashti, Hemmatollah; Vahabinia, Fatemeh; Gholamhossieni, Mobina

doi:10.1007/s00344-019-09974-1

Cited by 36 publications

(25 citation statements)

References 48 publications

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“…Salt stress significantly reduced PH, shoot biomass and LA in six rocket genotypes (Petretto et al, 2019). Similar data regarding the effect of salt stress on growth parameters in E. sativa was also reported by Bakhshandeh et al (2019). The data presented in the current research are in good agreement with the above-cited studies.…”

Section: Discussionsupporting

confidence: 91%

Evaluation of salt tolerance in Eruca sativa accessions based on morpho-physiological traits

Afsar

Bibi

Ahmad

et al. 2020

PeerJ

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Background Salinity is one of the most lethal abiotic stresses which affect multiple aspects of plant physiology. Natural variations in plant germplasm are a great resource that could be exploited for improvement in salt tolerance. Eruca sativa (E. sativa) exhibits tolerance to abiotic stresses. However, thorough evaluation of its salt stress tolerance and screening for traits that could be reliably applied for salt tolerance needs to be studied. The current study was designed to characterize 25 E. sativa accessions, originating from diverse geographical regions of Pakistan, for the salt stress tolerance. Methods Salt stress (150 mM NaCl) was applied for 2 weeks to the plants at four leaf stage in hydroponics. Data of the following morpho-physiological traits were collected from control and treated plants of all the accessions: root length (RL), shoot length (SL), plant height (PH), leaf number (LN), leaf area (LA), fresh weight (FW), dry weight (DW), chlorophyl content (SPAD), electrolyte leakage (EL), relative water content (RWC), gas exchange parameters and mineral ion content. Salt tolerance was determined based on membership function value (MFV) of the tested traits. Results Compared with control, the salt-stressed group had significantly reduced mean SL, RL, PH, LN, LA, FW, DW and SPAD. NaCl treatment triggered a slight increase in EL in few accessions. Mean RWC of control and treated groups were not significantly different although few accessions exhibited variation in this trait. Salt stress caused a significant reduction in photosynthesis rate (PR), transpiration rate (TR) and stomatal conductance (SC) but intercellular CO2 (Ci) was not significantly different between control and treated groups. Compared with control, the salt-stressed plants accumulated significantly higher Na+, K+ and Ca2+ while significantly lower Mg2+. K+/Na+ ratio was significantly decreased in salt-stressed plants compared with control. Importantly, significant inter-accession variations were found for all the tested traits. The principal component analysis identified SL, RL, PH, LN, LA, FW, DW and PR as the most significant traits for resolving inter-accession variability. Based on MFV of the tested traits, accessions were categorized into five standard groups. Among 25 accessions, one accession was ranked as highly tolerant, four as tolerant while 15 accessions were ranked as moderately tolerant. Of the remaining five accessions, four were ranked as sensitive while one accession as highly sensitive. Conclusion E. sativa accessions were found to exhibit significant genetic diversity in all the tested traits. A few most significant traits for dissecting the genetic variability were identified that could be used for future large-scale germplasm screening in E. sativa. Salt tolerant accessions could be a good resource for future breeding programs aiming to improve salt stress tolerance.

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Section: Discussionsupporting

confidence: 91%

Evaluation of salt tolerance in Eruca sativa accessions based on morpho-physiological traits

Afsar

Bibi

Ahmad

et al. 2020

PeerJ

View full text Add to dashboard Cite

show abstract

“…Salt stress significantly reduced plant height, shoot biomass, and leaf area in six rocket genotypes (Petretto et al, 2019). Similar data regarding the effect of salt stress on growth parameters in E. sativa was also reported by Bakhshandeh et al, (2019). The data presented in the current research are in good agreement with the above-cited studies.…”

Section: Discussionsupporting

confidence: 91%

Peer Review #1 of "Evaluation of salt tolerance in Eruca sativa accessions based on morpho-physiological traits (v0.1)"

2020

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Manuscript to be reviewed the most significant traits for resolving inter-accession variability. Based on MFV of the tested traits, accessions were categorized into five standard groups. Among 25 accessions, 1 accession was ranked as highly tolerant, 4 as tolerant while 15 accessions were ranked as moderately tolerant. Of the remaining 5 accessions, 4 were ranked as sensitive while 1 accession as highly sensitive. Conclusion. E. sativa accessions were found to exhibit significant genetic diversity in all the tested traits. A few most significant traits for dissecting the genetic variability were identified that could be used for future large-scale germplasm screening in E. sativa. Salt tolerant accessions could be a good resource for future breeding programs aiming to improve salt stress tolerance.

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“…SG is the first and most complex morphological and physiological phase in the succession of plant development where many factors such as temperature, water potential, drought and flood affect it [ 7 ]. Temperature ( T ) and water potential ( Ψ ) are the two most important external features that affect seed germination rate and germination characteristics [ 8 ]. Depending on the water potential of the permeation medium, if it is reduced germination may be also stopped or decelerated [ 9 ].…”

Section: Introductionmentioning

confidence: 99%

Using mathematical models to evaluate germination rate and seedlings length of chickpea seed (Cicer arietinum L.) to osmotic stress at cardinal temperatures

et al. 2021

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Cicer arietinum is the 3rd most important cool season legume crop growing in vast arid and semi-arid regions of the world. A lab experiment was designed using hydrothermal time model (HTT) to investigate the chickpea seed germination (SG) behavior, cardinal temperatures and germination responses across fluctuating temperatures (Ts) and water potentials (Ψs). Seeds of chickpea var. NIFA 1995 were germinated at six constant Ts (7, 14, 21, 28, 35 and 42°C) each having the following five water potentials: 0, -0.2, -0.4–0.6 and -0.8 MPa. Germination percentage (G%) decreased significantly at (*P ≤ 0.05) from 86.7% at 28°C in -0.2 MPa to 10% in -0.2 MPa at 7°C. The germination rate (GR = 1/t50) against different T percentiles exhibited that linear increase was observed in the GR pattern above and below the To. Based on the confidence intervals of the model coefficients and (R2: 0.96), the average cardinal temperatures were 4.7, 23 and 44.2°C for the base (Tb), optimal (To) and ceiling (Tc) temperatures respectively. θT1 value was observed maximum at 28°C in -0.2 MPa and decreases with decreasing Ψ (-0.8 MPa). In comparison with control, the θT2 value was also highest in -0.2 MPa at 28°C. The thermal time (TT) concept is well fitted to germination fraction data in distilled water with an R2 value increasing 0.972. The hydro time constant (θH) increased with an increase in T to To and then decreased when T>To. The ѱb(50) irregularly varied with increasing T, σΨb was also recorded lowest (0.166 MPa) at 28°C and highest (0.457 MPa) at 7°C. Based on the statistical analysis, cardinal temperatures, hydrothermal time constant (θHTT) and germination findings the HTT gives an insight into the interactive effect of T and Ψ on seed germination time courses under varying environmental conditions.

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Quantification of the Effect of Environmental Factors on Seed Germination and Seedling Growth of Eruca (Eruca sativa) Using Mathematical Models

Cited by 36 publications

References 48 publications

Evaluation of salt tolerance in Eruca sativa accessions based on morpho-physiological traits

Evaluation of salt tolerance in Eruca sativa accessions based on morpho-physiological traits

Peer Review #1 of "Evaluation of salt tolerance in Eruca sativa accessions based on morpho-physiological traits (v0.1)"

Using mathematical models to evaluate germination rate and seedlings length of chickpea seed (Cicer arietinum L.) to osmotic stress at cardinal temperatures

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