Abstract
Abstract The rice eultivars grown in the tropies and sub‐tropics can be broadly categorized as aromatic small grain, local coarse grain and modern high yielding varieties (HYV). The first two categories are traditional rice, and are generally palatable. The aromatic rice has better market value than HYV rice, yet farmers are unwilling to expand its cultivation because of the low yield potential. One possibility to expand the cultivation of traditional rice is o t find stress tolerant cultivars for growing in marginal land. The salinity tolerance of nine rice cultivars representing three from each type of aromatic small grains, local coarse grains and HYV types, was analysed at germination and early seedling stage. Seeds were placed for germination and the seedlings were allowed to grow for nine days at NaCl concentrations of 0, 50, 100, 150 and 200 mM. NaCl decreased the germination index (GI), speed of germination, seedling height and seedling dry matter weight. Seedling characteristics were decreased more than GI. In general aromatic small grain type showed more salt sensitivity than the other two types. Among the nine cultivars Shakkorkhora (aromatic type) showed the least salt tolerance in relation to germination and seedling characters while the other two cultivars of the same group showed tolerance as high as the tolerant cultivars in other types. Generalization of group salt tolerance of rice, therefore, has little value from the agronomic point of view at least at early growth stage. As the number of cultivars employed in this study was only three from each type it is suggested that more cultivars be considered for the purpose of salt tolerant improvement programme of various types of rice.
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Claims 8
Claim · model-written summary
NaCl decreased rice germination index and speed of germination.
- Taxon
- rice
Oryza sativat0 - Treatment
- NaCle0
- Outcome
- germination index (GI), speed of germinatione0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“NaCl decreased the germination index (GI), speed of germination, seedling height and seedling dry matter weight.”
t0“Rice (Oryza sativa L.)”
Claim · model-written summary
NaCl decreased rice seedling height and dry matter weight.
- Taxon
- riceOryza sativat0
- Treatment
- NaCle0
- Outcome
- seedling height and seedling dry matter weighte0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“NaCl decreased the germination index (GI), speed of germination, seedling height and seedling dry matter weight.”
t0“Rice (Oryza sativa L.)”
Claim · model-written summary
Rice seedling characteristics declined more than germination index under NaCl.
- Taxon
- riceOryza sativat0
- Outcome
- Seedling characteristicse0
- Direction
- decreased moree0
- Comparator
- GIe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seedling characteristics were decreased more than GI.”
t0“Rice (Oryza sativa L.)”
Claim · model-written summary
Aromatic small grain rice was generally more salt sensitive than the two other types.
- Taxon
- riceOryza sativat0
- Material
- aromatic small grain typee0
- Outcome
- salt sensitivitye0
- Direction
- moree0
- Comparator
- the other two typese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In general aromatic small grain type showed more salt sensitivity than the other two types.”
t0“Rice (Oryza sativa L.)”
Claim · model-written summary
Shakkorkhora showed the least salt tolerance among nine rice cultivars for germination and seedling characters.
- Taxon
- riceOryza sativat0
- Material
- Shakkorkhorae0
- Outcome
- salt tolerance in relation to germination and seedling characterse0
- Direction
- leaste0
- Comparator
- nine cultivarse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Among the nine cultivars Shakkorkhora (aromatic type) showed the least salt tolerance in relation to germination and seedling characters while the other two cultivars of the same group showed tolerance as high as the tolerant cultivars in other types.”
t0“Rice (Oryza sativa L.)”
Claim · model-written summary
The other two aromatic cultivars had salt tolerance as high as tolerant cultivars in other types.
- Taxon
- riceOryza sativat0
- Material
- the other two cultivars of the same groupe0
- Outcome
- tolerancee0
- Direction
- as high ase0
- Comparator
- the tolerant cultivars in other typese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the other two cultivars of the same group showed tolerance as high as the tolerant cultivars in other types.”
t0“Rice (Oryza sativa L.)”
Claim · model-written summary
The authors considered group level salt tolerance generalization of little agronomic value at early growth.
- Taxon
- riceOryza sativae0
- Outcome
- Generalization of group salt tolerancee0
- Qualifier
- at least at early growth stagee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Generalization of group salt tolerance of rice, therefore, has little value from the agronomic point of view at least at early growth stage.”
Claim · model-written summary
The authors suggested considering more cultivars for rice salt tolerance improvement.
- Taxon
- riceOryza sativae0
- Outcome
- more cultivars be considered for the purpose of salt tolerant improvement programmee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“it is suggested that more cultivars be considered for the purpose of salt tolerant improvement programme of various types of rice.”
The same questions in other papers
sodium chloride · growth · Oryza sativa (rice)Results differ
99 papers in the same direction as this paper · 28 in the opposite direction
- positive
- positive
- no effect
124 papers more in this group
See all 128 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.