Abstract
Six cultivars of safflower which were (PI-387820, PI-251978, PI-170274, PI-387821, PI-386174 and Thori-78) grown in net house of NIAB under salinity (10 ds m⁻¹) and drought (60% field capacity) conditions and compared to their oxidative damage and antioxidative responses. Plant samples (leaves) were collected for the determination of malonidialdehyde (MDA), antioxidative enzymes (catalase, ascorbate peroxidase, glutathione reductase, and peroxidase), proline, and photosynthetic pigments. Salinity and drought decreased the chlorophyll a and b contents but a decrease in chlorophyll a and b was less in safflower variety (THORI-78) which could be a useful marker for selecting a stress tolerant variety. Both stresses considerable increases the accumulation of proline in PI-251978, PI-170274, PI-387821, PI-386174 and THORI-78 varieties of safflower whereas the proline accumulation did not appear to be an essential part of the protection mechanism against salinity and drought in variety PI-387820. Enzyme activity measurements revealed that THORI-78 can tolerate salinity and drought stress well by increasing the activity of catalase and APX enzymes whereas variety PI- 386174 showed increased activity of glutathione reductase enzyme under salinity and drought and appear to be very crucial antioxidative defenses during intense stress conditions. The results indicate that the photosynthetic pigments, proline and activities of the enzymes are important mechanism for the stress tolerance in safflower plant and can be considered as genetic improvement for the plant in salinity and drought soil conditions.
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Claims 7
Claim · model-written summary
Salinity and drought decreased chlorophyll a and b in safflower.
- Taxon
- Safflower
Carthamus tinctoriust0 - Treatment
- Salinity and droughte0
- Outcome
- chlorophyll a and b contentse0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Safflower (Carthamus tinctorius L.)”
e0“Salinity and drought decreased the chlorophyll a and b contents”
Claim · model-written summary
Chlorophyll a and b decreased less in THORI-78.
- Taxon
- safflowerCarthamus tinctoriuse0
- Material
- THORI-78e0
- Outcome
- chlorophyll a and be0
- Direction
- lesse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Safflower (Carthamus tinctorius L.)”
e0“a decrease in chlorophyll a and b was less in safflower variety (THORI-78)”
Claim · model-written summary
Both stresses increased proline accumulation in five safflower varieties.
- Taxon
- safflowerCarthamus tinctoriuse0
- Material
- PI-251978, PI-170274, PI-387821, PI-386174 and THORI-78e0
- Treatment
- Both stressese0
- Outcome
- accumulation of prolinee0
- Direction
- increasese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both stresses considerable increases the accumulation of proline in PI-251978, PI-170274, PI-387821, PI-386174 and THORI-78 varieties of safflower”
Claim · model-written summary
Proline accumulation did not appear essential to stress protection in PI-387820.
- Taxon
- SafflowerCarthamus tinctoriust0
- Material
- PI-387820e0
- Outcome
- protection mechanism against salinity and droughte0
- Qualifier
- did not appear to be an essential parte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“proline accumulation did not appear to be an essential part of the protection mechanism against salinity and drought in variety PI-387820”
t0“Safflower (Carthamus tinctorius L.)”
Claim · model-written summary
THORI-78 increased catalase and APX activity under salinity and drought.
- Taxon
- SafflowerCarthamus tinctoriust0
- Material
- THORI-78e0
- Treatment
- salinity and drought stresse0
- Outcome
- activity of catalase and APX enzymese0
- Direction
- increasinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“THORI-78 can tolerate salinity and drought stress well by increasing the activity of catalase and APX enzymes”
t0“Safflower (Carthamus tinctorius L.)”
Claim · model-written summary
PI- 386174 increased glutathione reductase activity under salinity and drought.
- Taxon
- SafflowerCarthamus tinctoriust0
- Material
- PI- 386174e0
- Treatment
- salinity and droughte0
- Outcome
- activity of glutathione reductase enzymee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“variety PI- 386174 showed increased activity of glutathione reductase enzyme under salinity and drought”
t0“Safflower (Carthamus tinctorius L.)”
Claim · model-written summary
The authors propose pigments, proline and enzyme activities as stress tolerance mechanisms in safflower.
- Taxon
- safflowerCarthamus tinctoriuse0
- Outcome
- stress tolerancee0
- Qualifier
- photosynthetic pigments, proline and activities of the enzymese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the photosynthetic pigments, proline and activities of the enzymes are important mechanism for the stress tolerance in safflower plant”
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See all 10 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.