Abstract
Under global climate change, high-temperature stress is becoming a major threat to crop yields, adversely affecting plant growth, and ultimately resulting in significant yield losses in various crops, including chickpea. Thus, identifying crop genotypes with increased heat stress (HS) tolerance is becoming a priority for chickpea research. Here, we assessed the response of seven physiological traits and four yield and yield-related traits in 39 chickpea genotypes grown in normal-sown and late-sown environments [to expose plants to HS (>32/20°C) at the reproductive stage] for two consecutive years (2017–2018 and 2018–2019). Significant genetic variability for the tested traits occurred under normal and HS conditions in both years. Based on the tested physiological parameters and yield-related traits, GNG2171, GNG1969, GNG1488, PantG186, CSJ515, RSG888, RSG945, RVG202, and GNG469 were identified as promising genotypes under HS. Further, ten heat-tolerant and ten heat-sensitive lines from the set of 39 genotypes were validated for their heat tolerance (32/20°C from flowering to maturity) in a controlled environment of a growth chamber. Of the ten heat-tolerant genotypes, GNG1969, GNG1488, PantG186, RSG888, CSJ315, and GNG1499 exhibited high heat tolerance evidenced by small reductions in pollen viability, pollen germination, and pod set %, high seed yield plant –1 and less damage to membranes, photosynthetic ability, leaf water status, and oxidative processes. In growth chamber, chlorophyll, photosynthetic efficiency, pollen germination, and pollen viability correlated strongly with yield traits. Thus, GNG1969, GNG1488, PantG186, RSG888, CSJ315, and GNG1499 genotypes could be used as candidate donors for transferring heat tolerance traits to high-yielding heat-sensitive varieties to develop heat-resilient chickpea cultivars.
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Claims 9
Claim · model-written summary
Significant genetic variability for the tested traits occurred among 39 chickpea genotypes under normal and heat-stress conditions in both years.
- Taxon
- Chickpea
Cicer arietinumt0 - Outcome
- genetic variabilitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Significant genetic variability for the tested traits occurred under normal and HS conditions in both years”
t0“Cultivated Chickpea (Cicer arietinum L.) Under Heat Stress”
Claim · model-written summary
GNG2171, GNG1969, GNG1488, PantG186, CSJ515, RSG888, RSG945, RVG202 and GNG469 were identified as promising chickpea genotypes under heat stress.
- Taxon
- ChickpeaCicer arietinumt0
- Material
- GNG2171, GNG1969, GNG1488, PantG186, CSJ515, RSG888, RSG945, RVG202, and GNG469e0
- Outcome
- promising genotypes under HSe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“GNG2171, GNG1969, GNG1488, PantG186, CSJ515, RSG888, RSG945, RVG202, and GNG469 were identified as promising genotypes under HS”
t0“Cultivated Chickpea (Cicer arietinum L.) Under Heat Stress”
Claim · model-written summary
Six heat-tolerant chickpea genotypes showed small reductions in pollen viability, pollen germination and pod set % under heat stress.
- Taxon
- ChickpeaCicer arietinumt0
- Material
- GNG1969, GNG1488, PantG186, RSG888, CSJ315, and GNG1499e0
- Treatment
- Heat Stresst0
- Outcome
- pollen viability, pollen germination, and pod set %e0
- Direction
- small reductionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“GNG1969, GNG1488, PantG186, RSG888, CSJ315, and GNG1499 exhibited high heat tolerance evidenced by small reductions in pollen viability, pollen germination, and pod set %”
t0“Cultivated Chickpea (Cicer arietinum L.) Under Heat Stress”
Claim · model-written summary
The six heat-tolerant chickpea genotypes had high seed yield per plant under heat stress.
- Taxon
- ChickpeaCicer arietinumt0
- Material
- GNG1969, GNG1488, PantG186, RSG888, CSJ315, and GNG1499e0
- Treatment
- Heat Stresst0
- Outcome
- seed yielde0
- Direction
- highe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“GNG1969, GNG1488, PantG186, RSG888, CSJ315, and GNG1499 exhibited high heat tolerance evidenced by small reductions in pollen viability, pollen germination, and pod set %, high seed yield”
t0“Cultivated Chickpea (Cicer arietinum L.) Under Heat Stress”
Claim · model-written summary
The six heat-tolerant chickpea genotypes had less damage to membranes, photosynthetic ability and leaf water status under heat stress.
- Taxon
- ChickpeaCicer arietinumt0
- Material
- GNG1969, GNG1488, PantG186, RSG888, CSJ315, and GNG1499e0
- Treatment
- Heat Stresst0
- Outcome
- membranes, photosynthetic ability, leaf water statuse0
- Direction
- less damagee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“GNG1969, GNG1488, PantG186, RSG888, CSJ315, and GNG1499 exhibited high heat tolerance evidenced by small reductions in pollen viability, pollen germination, and pod set %, high seed yield plant –1 and less damage to membranes, photosynthetic ability, leaf water status”
t0“Cultivated Chickpea (Cicer arietinum L.) Under Heat Stress”
Claim · model-written summary
The six heat-tolerant chickpea genotypes had less oxidative damage under heat stress.
- Taxon
- ChickpeaCicer arietinumt0
- Material
- GNG1969, GNG1488, PantG186, RSG888, CSJ315, and GNG1499e0
- Treatment
- Heat Stresst0
- Outcome
- oxidative processese0
- Direction
- less damagee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“GNG1969, GNG1488, PantG186, RSG888, CSJ315, and GNG1499 exhibited high heat tolerance evidenced by small reductions in pollen viability, pollen germination, and pod set %, high seed yield plant –1 and less damage to membranes, photosynthetic ability, leaf water status, and oxidative processes”
t0“Cultivated Chickpea (Cicer arietinum L.) Under Heat Stress”
Claim · model-written summary
In the growth chamber, chlorophyll and photosynthetic efficiency correlated strongly with yield traits in chickpea.
- Taxon
- ChickpeaCicer arietinumt0
- Outcome
- chlorophyll, photosynthetic efficiencye0
- Qualifier
- correlated strongly with yield traitse0
- Setting
- growth chambere0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In growth chamber, chlorophyll, photosynthetic efficiency, pollen germination, and pollen viability correlated strongly with yield traits”
t0“Cultivated Chickpea (Cicer arietinum L.) Under Heat Stress”
Claim · model-written summary
In the growth chamber, pollen germination and pollen viability correlated strongly with yield traits in chickpea.
- Taxon
- ChickpeaCicer arietinumt0
- Outcome
- pollen germination, and pollen viabilitye0
- Qualifier
- correlated strongly with yield traitse0
- Setting
- growth chambere0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In growth chamber, chlorophyll, photosynthetic efficiency, pollen germination, and pollen viability correlated strongly with yield traits”
t0“Cultivated Chickpea (Cicer arietinum L.) Under Heat Stress”
Claim · model-written summary
The authors recommend the six heat-tolerant genotypes as candidate donors for transferring heat tolerance to high-yielding heat-sensitive chickpea varieties.
- Taxon
- ChickpeaCicer arietinumt0
- Material
- GNG1969, GNG1488, PantG186, RSG888, CSJ315, and GNG1499e0
- Outcome
- candidate donors for transferring heat tolerance traitse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“GNG1969, GNG1488, PantG186, RSG888, CSJ315, and GNG1499 genotypes could be used as candidate donors for transferring heat tolerance traits”
t0“Cultivated Chickpea (Cicer arietinum L.) Under Heat Stress”
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See all 12 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.