Abstract
Effects of drought stress on the physiological characteristics under varying degrees of stress on three common herbal ferns occurred in Shenzhen were investigated by membership function method,namely,Nephrolepis auriculata,Pteris linearis and Cyclosorus parasiticus.The results showed that the permanent wilting rate and foliage water losing rate of three ferns had the same responses under drought stress and with the order of C.parasiticusP.linearisN.auriculata.As drought stress increased,the relative water content of three ferns decreased obviously,the decreasing extent was C.parasiticusP.linearisN.auriculata,but the relative electric conductivity,contents of soluble sugar and proline increased,especially,N.auriculata presented slightly fluctuated,P.linearis increased obviously at drought stress for 9 to 12 days,C.parasiticus fluctuated largely and continually.However,with the drought stress increased deeply,the malondialdehyde(MDA)activities of three ferns exhibited the trends of increase,then decrease and increase.The MDA content of C.parasiticus was always higher than the others.Through comprehensive analysis,it was concluded that the drought resistant abilities of three ferns were ranked as N.auriculataP.linearisC.parasiticus.
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Claims 10
Claim · model-written summary
Permanent wilting rate and foliage water loss rate of the three ferns showed the same responses under drought stress, in the order C. parasiticus, P. linearis, N. auriculata.
- Taxon
- three fernse0
- Treatment
- drought stresse0
- Outcome
- permanent wilting rate and foliage water losing ratee0
Not reportedComparatorDirection
Verbatim
t0“3 Herbal Ferns”
e0“the permanent wilting rate and foliage water losing rate of three ferns had the same responses under drought stress and with the order of C.parasiticusP.linearisN.auriculata”
Claim · model-written summary
Relative water content of the three ferns decreased obviously as drought stress increased.
Not reportedComparator
Verbatim
e0“As drought stress increased,the relative water content of three ferns decreased obviously”
Claim · model-written summary
The decline in relative water content differed among species in the order C. parasiticus, P. linearis, N. auriculata.
Verbatim
t0“3 Herbal Ferns”
e0“the decreasing extent was C.parasiticusP.linearisN.auriculata”
e1“the relative water content of three ferns decreased obviously”
Claim · model-written summary
Relative electric conductivity and contents of soluble sugar and proline of the three ferns increased with drought stress.
- Taxon
- 3 Herbal Fernst0
- Treatment
- drought stresse0
- Outcome
- relative electric conductivity,contents of soluble sugar and prolinee1
- Direction
- increasede1
Not reportedComparator
Verbatim
t0“3 Herbal Ferns”
e0“As drought stress increased”
e1“the relative electric conductivity,contents of soluble sugar and proline increased”
Claim · model-written summary
In N. auriculata, electric conductivity, soluble sugar and proline fluctuated only slightly under drought stress.
- Taxon
- N.auriculata
Nephrolepis auriculatae0 - Treatment
- drought stresse2
- Outcome
- relative electric conductivity,contents of soluble sugar and prolinee1
- Direction
- slightly fluctuatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“N.auriculata presented slightly fluctuated”
e1“the relative electric conductivity,contents of soluble sugar and proline increased”
e2“As drought stress increased”
Claim · model-written summary
In P. linearis, electric conductivity, soluble sugar and proline increased obviously at 9 to 12 days of drought stress.
- Taxon
- P.linearis
Pteris linearise0 - Treatment
- drought stresse0
- Outcome
- relative electric conductivity,contents of soluble sugar and prolinee1
- Direction
- increased obviouslye0
- Qualifier
- for 9 to 12 dayse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“P.linearis increased obviously at drought stress for 9 to 12 days”
e1“the relative electric conductivity,contents of soluble sugar and proline increased”
Claim · model-written summary
In C. parasiticus, electric conductivity, soluble sugar and proline fluctuated largely and continually under drought stress.
- Taxon
- C.parasiticus
.jpg?width=60)
Thelypteris parasiticae0 - Treatment
- drought stresse2
- Outcome
- relative electric conductivity,contents of soluble sugar and prolinee1
- Direction
- fluctuated largely and continuallye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“C.parasiticus fluctuated largely and continually”
e1“the relative electric conductivity,contents of soluble sugar and proline increased”
e2“As drought stress increased”
Claim · model-written summary
Malondialdehyde activities of the three ferns first increased, then decreased and increased again under deeper drought stress.
Verbatim
t0“3 Herbal Ferns”
e0“the malondialdehyde(MDA)activities of three ferns exhibited the trends of increase,then decrease and increase”
Claim · model-written summary
MDA content of C. parasiticus was always higher than that of the other two ferns.
- Taxon
- C.parasiticusThelypteris parasiticae0
- Outcome
- MDA contente0
- Direction
- highere0
- Comparator
- the otherse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The MDA content of C.parasiticus was always higher than the others”
Claim · model-written summary
Drought resistance of the three ferns was ranked N. auriculata, P. linearis, C. parasiticus on comprehensive analysis.
Verbatim
e0“the drought resistant abilities of three ferns were ranked as N.auriculataP.linearisC.parasiticus”