Abstract
This experiment was carried out to study the ecophysiological influences of zeolite and selenium on water deficit stress tolerance in different rapeseed cultivars at Karaj, Iran using a factorial-split-plot design with three replications during 2009 - 2010. The main-plot factors included: irrigation regimes (control and irrigation interrupted during the flowering stage), zeolite (non-application and 10 ton/ha) and selenium (non-application and 30 g/l) while the sub-plot factor included three cultivars (Opera, SLM 046 and Modena) of winter rapeseed (Brassica napus L.). The results showed that total dry weight (TDW), life area index (LAI), relative growth rate (RGR) and crop growth rate (CGR) were all highly significantly different among the rapeseed cultivars, whereas drought stress had effects of practical significance on TDW, LAI, RGR and CGR and zeolite and selenium applications reduced the water deficit stress damages. The results also showed that the highest TDW, LAI, RGR and CGR were obtained from Opera cultivar by zeolite and selenium applications under no-drought condition. The findings firmly established that drought stress sorely reduces physiological growth indices of winter rapeseed cultivars under conditions of Karaj in Iran while, zeolite and selenium applications were reduced the water deficit stress damages. Key words: Ecophysiological influences, zeolite, selenium, water deficit stress, winter rapeseed cultivars
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Claims 7
Claim · model-written summary
Total dry weight, leaf area index and relative growth rate differed highly significantly among the rapeseed cultivars.
- Taxon
- Brassica napus L.
_Brassica_napus_-_Habit.jpg?width=60)
Brassica napuse1 - Material
- rapeseed cultivarse3
- Outcome
- total dry weight (TDW), life area index (LAI), relative growth rate (RGR)e3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Brassica_napus_-_Habit.jpg?width=500)
Verbatim
e1“winter rapeseed (Brassica napus L.)”
e3“total dry weight (TDW), life area index (LAI), relative growth rate (RGR) and crop growth rate (CGR) were all highly significantly different among the rapeseed cultivars”
Claim · model-written summary
Crop growth rate differed highly significantly among the rapeseed cultivars.
- Taxon
- Brassica napus L.Brassica napuse1
- Material
- rapeseed cultivarse3
- Outcome
- crop growth rate (CGR)e3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“winter rapeseed (Brassica napus L.)”
e3“total dry weight (TDW), life area index (LAI), relative growth rate (RGR) and crop growth rate (CGR) were all highly significantly different among the rapeseed cultivars”
Claim · model-written summary
Drought stress had effects of practical significance on total dry weight, leaf area index, relative growth rate and crop growth rate in winter rapeseed.
- Taxon
- Brassica napus L.Brassica napuse1
- Treatment
- drought stresse4
- Outcome
- TDW, LAI, RGR and CGRe4
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“winter rapeseed (Brassica napus L.)”
e4“whereas drought stress had effects of practical significance on TDW, LAI, RGR and CGR”
Claim · model-written summary
Drought stress reduced physiological growth indices of winter rapeseed cultivars under conditions at Karaj, Iran.
- Taxon
- Brassica napus L.Brassica napuse1
- Treatment
- drought stresse5
- Outcome
- physiological growth indicese5
- Direction
- reducese5
- Setting
- Karaj in Irane5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“winter rapeseed (Brassica napus L.)”
e5“The findings firmly established that drought stress sorely reduces physiological growth indices of winter rapeseed cultivars under conditions of Karaj in Iran”
Claim · model-written summary
Zeolite and selenium applications reduced water deficit stress damage in winter rapeseed.
- Taxon
- Brassica napus L.Brassica napuse1
- Treatment
- zeolite and selenium applicationse6
- Outcome
- water deficit stress damagese6
- Direction
- reducede6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“winter rapeseed (Brassica napus L.)”
e6“zeolite and selenium applications reduced the water deficit stress damages”
Claim · model-written summary
The highest total dry weight, leaf area index and relative growth rate were obtained from Opera with zeolite and selenium under no drought.
- Taxon
- Brassica napus L.Brassica napuse1
- Material
- Operae7
- Treatment
- zeolite and selenium applicationse7
- Outcome
- TDW, LAI, RGRe7
- Direction
- higheste7
- Qualifier
- under no-drought conditione7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“winter rapeseed (Brassica napus L.)”
e7“The results also showed that the highest TDW, LAI, RGR and CGR were obtained from Opera cultivar by zeolite and selenium applications under no-drought condition”
Claim · model-written summary
The highest crop growth rate was obtained from Opera with zeolite and selenium under no drought.
- Taxon
- Brassica napus L.Brassica napuse1
- Material
- Operae7
- Treatment
- zeolite and selenium applicationse7
- Outcome
- CGRe7
- Direction
- higheste7
- Qualifier
- under no-drought conditione7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“winter rapeseed (Brassica napus L.)”
e7“The results also showed that the highest TDW, LAI, RGR and CGR were obtained from Opera cultivar by zeolite and selenium applications under no-drought condition”
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See all 63 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.