Abstract
Drought is regarded as one of the limiting factors in rice production nationally and globally. The present study was conducted to study morpho-physiological and biochemical responses of rice genotypes to drought stress, to identify potential traits for use as a selection criterion in breeding drought-tolerant rice at seedling stage and finally to identify rice genotype resistant to drought stress for use as parents in future breeding. The experimental design used was a split-plot design with three replications, with drought stress as the main plot and rice genotypes as the sub-plot. The main plots consisted of control (normal irrigation) and drought stress. The sub-plots consisted of twelve rice genotypes namely Apami (V1), Boewani (V2), Basmati 370 (V3), Cica- 4 (V4), Dular (V5), Jarom mas (V6), Kalarata (V7), Biris (V8), Haiboq (V9), Moroberekan (V10), MR 297 (V11) and Aerob 1 (V12). Results showed that drought stress led to a decrease in plant height, leaves size, root length, total dry weight, and number of leaves but an increment in proline content. The genotype Apami and Kalarata were found to accumulate higher proline content indicating potential resistant ability towards drought stress. Dular and Aerob1, along with tolerant control genotype, Moroberekan, on the other hand, recorded a lower SES score. Leave size, root length, and plant height could also be used as a selection criterion in breeding drought-tolerant rice due to high values of broad-sense heritability and genetic advance by percentage of mean (GAM). Nevertheless, further study on the genetics and physiological basis of tolerant ability at reproductive growth stages are necessary in order to assess grain yield potential of the potentially tolerant genotype reported in this study.
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Claims 10
Claim · model-written summary
Drought reduced rice plant height, leaf size and root length.
- Taxon
- rice
Oryza sativat0 - Treatment
- drought stresse0
- Outcome
- plant height, leaves size, root lengthe0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“drought stress led to a decrease in plant height, leaves size, root length, total dry weight, and number of leaves but an increment in proline content”
t0“RICE (Oryza sativa L.)”
Claim · model-written summary
Drought reduced total dry weight and leaf number in rice.
- Taxon
- riceOryza sativat0
- Treatment
- drought stresse0
- Outcome
- total dry weight, and number of leavese0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“drought stress led to a decrease in plant height, leaves size, root length, total dry weight, and number of leaves but an increment in proline content”
t0“RICE (Oryza sativa L.)”
Claim · model-written summary
Drought increased rice proline content.
- Taxon
- riceOryza sativat0
- Treatment
- drought stresse0
- Outcome
- proline contente0
- Direction
- incremente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“drought stress led to a decrease in plant height, leaves size, root length, total dry weight, and number of leaves but an increment in proline content”
t0“RICE (Oryza sativa L.)”
Claim · model-written summary
Apami accumulated higher proline under drought.
- Taxon
- riceOryza sativat0
- Material
- Apamie0
- Treatment
- drought stresse0
- Outcome
- proline contente0
- Direction
- highere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The genotype Apami and Kalarata were found to accumulate higher proline content indicating potential resistant ability towards drought stress.”
t0“RICE (Oryza sativa L.)”
Claim · model-written summary
Kalarata accumulated higher proline under drought.
- Taxon
- riceOryza sativat0
- Material
- Kalaratae0
- Treatment
- drought stresse0
- Outcome
- proline contente0
- Direction
- highere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The genotype Apami and Kalarata were found to accumulate higher proline content indicating potential resistant ability towards drought stress.”
t0“RICE (Oryza sativa L.)”
Claim · model-written summary
Dular had a lower SES score.
- Taxon
- riceOryza sativat0
- Material
- Dulare0
- Outcome
- SES scoree0
- Direction
- lowere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Dular and Aerob1, along with tolerant control genotype, Moroberekan, on the other hand, recorded a lower SES score.”
t0“RICE (Oryza sativa L.)”
Claim · model-written summary
Aerob1 had a lower SES score.
- Taxon
- riceOryza sativat0
- Material
- Aerob1e0
- Outcome
- SES scoree0
- Direction
- lowere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Dular and Aerob1, along with tolerant control genotype, Moroberekan, on the other hand, recorded a lower SES score.”
t0“RICE (Oryza sativa L.)”
Claim · model-written summary
Moroberekan had a lower SES score.
- Taxon
- riceOryza sativat0
- Material
- Moroberekane0
- Outcome
- SES scoree0
- Direction
- lowere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Dular and Aerob1, along with tolerant control genotype, Moroberekan, on the other hand, recorded a lower SES score.”
t0“RICE (Oryza sativa L.)”
Claim · model-written summary
Leaf size, root length and plant height showed high heritability and genetic advance.
- Taxon
- riceOryza sativae0
- Organ / stage
- Leave size, root length, and plant heighte0
- Outcome
- broad-sense heritability and genetic advance by percentage of mean (GAM)e0
- Direction
- high valuese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Leave size, root length, and plant height could also be used as a selection criterion in breeding drought-tolerant rice due to high values of broad-sense heritability and genetic advance by percentage of mean (GAM).”
Claim · model-written summary
Authors recommend leaf size, root length and plant height as drought tolerance selection criteria.
- Taxon
- riceOryza sativae0
- Outcome
- selection criterion in breeding drought-tolerant ricee0
- Qualifier
- Leave size, root length, and plant heighte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Leave size, root length, and plant height could also be used as a selection criterion in breeding drought-tolerant rice”
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See all 282 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.