Abstract
Salinity is one of the major environmental factors limiting crop productivity. For this reason, a greenhouse experiment was conducted in Rasht, North of Iran during 2010 growing season to evaluate the salinity levels of irrigation water at different growth stages on the some physiological characterization of rice. Treatments were arranged in a randomized complete block design with two factors and three replications. Factor one included four levels of saline water (2, 4, 6, and 8 dS m‒1); factor two consisted of four growth stages (tillering, panicle initiation, panicle emergence and ripening). The results of this work showed that effect of different salinity levels on the all yield components except percentage of filled grains per panicle was not significant. Increase in salinity levels decreased this component. Effect of different growth stages on total number of empty grains per panicles, percentage of filled grains per panicle, number of unfilled panicles and percentage of ratio of number of unfilled panicles to tillers was significant but effect of different saline water on length of unfilled panicle and number of spikelets per unfilled panicle was insignificant. Resistance of final growth stages, i.e. panicle emergence and ripening stages against salinity was more than primary growth stages, i.e. tillering and panicle initiation. Therefore, in irrigation with saline water the final growth stages were important and irrigation with saline water should be applied at final growth stages.
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Claims 6
Claim · model-written summary
Different salinity levels did not significantly affect rice yield components other than filled grains per panicle.
- Taxon
- rice
Oryza sativat0 - Treatment
- different salinity levelse0
- Outcome
- all yield components except percentage of filled grains per paniclee0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The results of this work showed that effect of different salinity levels on the all yield components except percentage of filled grains per panicle was not significant.”
t0“rice”
Claim · model-written summary
Increasing salinity reduced the percentage of filled rice grains per panicle.
- Taxon
- riceOryza sativat0
- Treatment
- salinity levelse0
- Outcome
- percentage of filled grains per paniclee1
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increase in salinity levels decreased this component.”
e1“except percentage of filled grains per panicle was not significant.”
t0“rice”
Claim · model-written summary
Rice growth stage significantly affected four empty or filled grain and panicle measures.
- Taxon
- riceOryza sativat0
- Treatment
- different growth stagese0
- Outcome
- total number of empty grains per panicles, percentage of filled grains per panicle, number of unfilled panicles and percentage of ratio of number of unfilled panicles to tillerse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Effect of different growth stages on total number of empty grains per panicles, percentage of filled grains per panicle, number of unfilled panicles and percentage of ratio of number of unfilled panicles to tillers was significant”
t0“rice”
Claim · model-written summary
Saline irrigation had no significant effect on unfilled panicle length or spikelets per unfilled panicle.
- Taxon
- riceOryza sativat0
- Treatment
- different saline watere0
- Outcome
- length of unfilled panicle and number of spikelets per unfilled paniclee0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“effect of different saline water on length of unfilled panicle and number of spikelets per unfilled panicle was insignificant.”
t0“rice”
Claim · model-written summary
Rice at panicle emergence and ripening was more salinity resistant than at tillering and panicle initiation.
- Taxon
- riceOryza sativat0
- Organ / stage
- panicle emergence and ripening stagese0
- Outcome
- Resistancee0
- Direction
- more thane0
- Comparator
- tillering and panicle initiatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Resistance of final growth stages, i.e. panicle emergence and ripening stages against salinity was more than primary growth stages, i.e. tillering and panicle initiation.”
t0“rice”
Claim · model-written summary
The authors recommend applying saline irrigation at the final rice growth stages.
- Taxon
- riceOryza sativat0
- Outcome
- irrigation with saline water should be applied at final growth stagese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“irrigation with saline water should be applied at final growth stages.”
t0“rice”
The same questions in other papers
salinity · yield · Oryza sativa (rice)Positive and negative results
137 papers in the same direction as this paper · 29 in the opposite direction
- negative
- negative
- negative
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See all 167 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.