Abstract
Water shortage is a critical problem touching plant growth and yield in arid and semi-arid areas such as Iran. Plant hormones such as jasmonic acid (JA) play a crucial role in altering plant morphology in response to stress. To investigate the effect of JA and drought stress on grain yield and some physiological and biochemical characteristics of quinoa cultivars, a split-plot factorial experiment based on randomized complete block design with three replications was conducted at Kerman Agricultural and Natural Resources Research and Education Center over two crop years (2018-2019). In this experiment, drought stress as the main factor in two levels including non-stress and stress based on 60% and 90% soil available moisture depletion and JA foliar application (0, 1 and 2 mg L-1) and cultivars (Giza1, Titicaca, Q29) respectively, as factorial were sub factor. The maximum grain yield (3775 kg ha-1) was obtained in Giza1 cultivar under non-stress condition and 1 mg L-1 JA foliar application. The greatest grain protein and total chlorophyll content were obtained in Titicaca cultivar under non-stress and 1 mg L-1 JA foliar application by 18.17% and 1.83 mg g-1 fresh leaf weight, respectively. In the opposite trend, the maximum amount of malondialdehyde was observed under drought stress and non-use of JA. In general, given the results of this study, it can be stated that JA caused an increase in grain yield in quinoa cultivars by reducing the harmful effects of drought stress and improving plant growth.
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Claims 5
Claim · model-written summary
Giza1 had maximum grain yield of 3775 kg ha-1 without drought at 1 mg L-1 foliar JA.
- Taxon
- Chenopodium quinoa
Chenopodium quinoat0 - Material
- Giza1e0
- Treatment
- 1 mg L-1 JA foliar applicatione0
- Outcome
- grain yielde0
- Direction
- maximume0
- Value
- 3775 kg ha-1e0
- Qualifier
- non-stress conditione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The maximum grain yield (3775 kg ha-1) was obtained in Giza1 cultivar under non-stress condition and 1 mg L-1 JA foliar application.”
t0“Chenopodium quinoa Cultivars”
Claim · model-written summary
Titicaca had greatest grain protein of 18.17% without drought at 1 mg L-1 JA.
- Taxon
- Chenopodium quinoaChenopodium quinoat0
- Material
- Titicacae0
- Treatment
- 1 mg L-1 JA foliar applicatione0
- Outcome
- grain proteine0
- Direction
- greateste0
- Value
- 18.17%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The greatest grain protein and total chlorophyll content were obtained in Titicaca cultivar under non-stress and 1 mg L-1 JA foliar application by 18.17% and 1.83 mg g-1 fresh leaf weight, respectively.”
t0“Chenopodium quinoa Cultivars”
Claim · model-written summary
Titicaca had greatest chlorophyll content of 1.83 mg g-1 fresh leaf weight under the same conditions.
- Taxon
- Chenopodium quinoaChenopodium quinoat0
- Material
- Titicacae0
- Treatment
- 1 mg L-1 JA foliar applicatione0
- Outcome
- total chlorophyll contente0
- Direction
- greateste0
- Value
- 1.83 mg g-1 fresh leaf weighte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The greatest grain protein and total chlorophyll content were obtained in Titicaca cultivar under non-stress and 1 mg L-1 JA foliar application by 18.17% and 1.83 mg g-1 fresh leaf weight, respectively.”
t0“Chenopodium quinoa Cultivars”
Claim · model-written summary
Malondialdehyde was highest under drought without JA.
- Taxon
- Chenopodium quinoaChenopodium quinoat0
- Treatment
- drought stress and non-use of JAe0
- Outcome
- amount of malondialdehydee0
- Direction
- maximume0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the maximum amount of malondialdehyde was observed under drought stress and non-use of JA.”
t0“Chenopodium quinoa Cultivars”
Claim · model-written summary
The authors concluded JA increased quinoa grain yield by reducing drought damage and improving growth.
- Taxon
- quinoa cultivarsChenopodium quinoae0
- Treatment
- JAe0
- Outcome
- grain yielde0
- Direction
- increasee0
- Qualifier
- reducing the harmful effects of drought stress and improving plant growthe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“JA caused an increase in grain yield in quinoa cultivars by reducing the harmful effects of drought stress and improving plant growth.”
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See all 5 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.