Abstract
Objective In order to establish a method for salt tolerance screening of Chrysanthemum as well as to discover salt tolerant germplasms for chrysanthemum breeding,salt tolerance of 30 species from Chrysanthemum and its relative genera was identified in comparison with two chrysanthemum cultivars.Method Four species from Chrysanthemum and its relative genera were hydroponically cultured in Hoagland solution supplemented with NaCl at different concentrations of 0,40,80,120,160 and 200 mmol·L-1,respectively.The proper screening concentration of NaCl was determined using the ratio ofinjured leaf area per plant.The regression equation models regarding the correlation between the stressed duration and the ratio ofinjured leaf area per plant were established,from which the time when the ratio ofinjured leaf area per plant reached 50% of the whole plant was figured out.The salt tolerance of 32 taxa was sequenced based on the time.This sequence was compared with those judged from other leaf morphological indexes.A comprehensive evaluation of salt tolerance of 32 taxa was made by using hierarchical clustering analysis.ResultThe proper NaCl concentration for screening salt-tolerance was 120 mmol·L-1.Variation coefficients of different indexes under the NaCl concentration were great,and correlation coefficient between sequences of salt tolerance based on different indexes was high.Three types of equations including 32 regression equations were established,and the regression equations all demonstrated good regression effects.Conclusion Salt tolerance screening of plants from Chrysanthemum and its relative genera can be achieved effectively and rapidly by leaf morphological indexes.Clustering analysis showed that 32 taxa could be divided into extremely salt tolerant,salt tolerant,moderately salt tolerant and salt sensitive grade,respectively.Artemisia japonica,Aster spathulifolius,Crossostephium chinense are extremely salt tolerant,Tanacetum vulgare and Chrysanthemum crassum are salt-tolerant,seven taxa represented by Artemisia vulgaris,Leucanthemum vulgare are moderately salt tolerant,14 taxa represented by Chrysanthemum zawadskii,Ch.chanetii,Ch.vestitum,Ch.lavandulifolium are salt sensitive ones.
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Claims 9
Claim · model-written summary
The proper NaCl concentration for salt-tolerance screening of Chrysanthemum taxa was 120 mmol/L.
- Taxon
- Chrysanthemum
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Chrysanthemume0 - Outcome
- proper NaCl concentration for screening salt-tolerancee1
- Value
- 120 mmol·L-1e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpeg?width=500)
Verbatim
e0“salt tolerance of 30 species from Chrysanthemum and its relative genera was identified in comparison with two chrysanthemum cultivars”
e1“The proper NaCl concentration for screening salt-tolerance was 120 mmol·L-1”
Claim · model-written summary
Correlation between salt-tolerance sequences based on different indexes was high.
- Taxon
- ChrysanthemumChrysanthemume0
- Outcome
- correlation coefficient between sequences of salt tolerancee2
- Qualifier
- was highe2
- Comparator
- different indexese2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“salt tolerance of 30 species from Chrysanthemum and its relative genera was identified in comparison with two chrysanthemum cultivars”
e2“correlation coefficient between sequences of salt tolerance based on different indexes was high”
Claim · model-written summary
Variation coefficients of the salt-tolerance indexes under NaCl were large.
- Taxon
- ChrysanthemumChrysanthemume0
- Treatment
- NaCl concentratione3
- Outcome
- Variation coefficients of different indexese3
- Qualifier
- greate3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“salt tolerance of 30 species from Chrysanthemum and its relative genera was identified in comparison with two chrysanthemum cultivars”
e3“Variation coefficients of different indexes under the NaCl concentration were great”
Claim · model-written summary
Three types of regression equations (32 in total) were established and all showed good regression effects.
- Taxon
- ChrysanthemumChrysanthemume0
- Outcome
- regression effectse4
- Value
- 32 regression equationse4
- Qualifier
- goode4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“salt tolerance of 30 species from Chrysanthemum and its relative genera was identified in comparison with two chrysanthemum cultivars”
e4“Three types of equations including 32 regression equations were established, and the regression equations all demonstrated good regression effects”
Claim · model-written summary
Artemisia japonica, Aster spathulifolius and Crossostephium chinense are extremely salt tolerant.
- Taxon
- Artemisia japonica
Artemisia japonicae5 - Material
- Aster spathulifolius,Crossostephium chinensee5
- Outcome
- salt tolerante5
- Qualifier
- extremely salt tolerante5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“Artemisia japonica,Aster spathulifolius,Crossostephium chinense are extremely salt tolerant”
Claim · model-written summary
Tanacetum vulgare and Chrysanthemum crassum are salt-tolerant.
- Taxon
- Tanacetum vulgare
Tanacetum vulgaree6 - Material
- Chrysanthemum crassume6
- Outcome
- salt-tolerante6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“Tanacetum vulgare and Chrysanthemum crassum are salt-tolerant”
Claim · model-written summary
Seven taxa represented by Artemisia vulgaris and Leucanthemum vulgare are moderately salt tolerant.
- Taxon
- Artemisia vulgaris
Artemisia vulgarise7 - Material
- Leucanthemum vulgaree7
- Outcome
- moderately salt tolerante7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“seven taxa represented by Artemisia vulgaris,Leucanthemum vulgare are moderately salt tolerant”
Claim · model-written summary
Fourteen taxa represented by Chrysanthemum zawadskii, Ch. chanetii, Ch. vestitum and Ch. lavandulifolium are salt sensitive.
- Taxon
- Chrysanthemum zawadskii
Chrysanthemum zawadzkiie2 - Material
- Ch.chanetii,Ch.vestitum,Ch.lavandulifoliume2
- Outcome
- salt sensitivee2
- Qualifier
- 14 taxae2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“14 taxa represented by Chrysanthemum zawadskii,Ch.chanetii,Ch.vestitum,Ch.lavandulifolium are salt sensitive ones”
Claim · model-written summary
Salt tolerance screening of Chrysanthemum and relative genera can be achieved effectively and rapidly with leaf morphological indexes.
- Taxon
- ChrysanthemumChrysanthemume0
- Outcome
- salt tolerance screeninge3
- Qualifier
- effectively and rapidly by leaf morphological indexese3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Schema note from the model: method performance statement with no comparator or value; kind observation used because the schema has no fit for it
Verbatim
e0“salt tolerance of 30 species from Chrysanthemum and its relative genera was identified in comparison with two chrysanthemum cultivars”
e3“Salt tolerance screening of plants from Chrysanthemum and its relative genera can be achieved effectively and rapidly by leaf morphological indexes”