Abstract
Context Lentil (Lens culinaris ssp. culinaris Medik.) is a key cool-season legume that suffers significant yield and quality losses under increasing heat and drought stress, particularly during its reproductive stage. With climate change intensifying the intensity and frequency of these stresses, current cultivars often fail to perform well under such conditions, necessitating the search for more resilient genetic resources. Aims This study aimed to identify lentil accessions from both crop wild relatives (CWR) and cultivated types, with tolerance to heat and drought stresses. Methods In total, 80 accessions (50 wild and 30 cultivated) were evaluated under optimal, heat-stress, and water-stress field conditions over two cropping seasons (2019/2020 and 2021/2022). Phenological and yield-related traits were recorded to assess stress responses. Key results Both heat and water stress had significant effect on phenology, grain yield, and biomass. Water stress caused greater yield and yield component reduction in cultivated accessions, whereas heat stress caused higher reduction in seed and pod numbers in CWR accessions. Notably, Accessions IG72532 (L. nigricans), IG72562 (L. c. odemensis), IG72830 (L. c. tomentosus), and four accessions of L. c. orientalis (IG16028, IG16038, IG136670, IG136672) were identified as drought tolerant. Additionally, seven cultivated accessions were identified as heat tolerant. Conclusions A wide range of genetic variation for heat and drought tolerance was observed across the lentil accessions, with certain wild and cultivated accessions performing well under extreme conditions. Implications The identified heat- and drought-tolerant accessions offer valuable genetic resources for lentil breeding programs aimed at improving resilience to climate change.
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Claims 10
Claim · model-written summary
Heat stress had a significant effect on phenology, grain yield and biomass of lentil compared with optimal conditions.
- Taxon
- lentil
Lens culinarise2 - Treatment
- heat-stresse1
- Outcome
- phenology, grain yield, and biomasse0
- Comparator
- optimale1
- Setting
- field conditionse1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both heat and water stress had significant effect on phenology, grain yield, and biomass”
e1“evaluated under optimal, heat-stress, and water-stress field conditions over two cropping seasons (2019/2020 and 2021/2022)”
e2“Lentil (Lens culinaris ssp. culinaris Medik.)”
Claim · model-written summary
Water stress had a significant effect on phenology, grain yield and biomass of lentil compared with optimal conditions.
- Taxon
- lentilLens culinarise2
- Treatment
- water-stresse1
- Outcome
- phenology, grain yield, and biomasse0
- Comparator
- optimale1
- Setting
- field conditionse1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both heat and water stress had significant effect on phenology, grain yield, and biomass”
e1“evaluated under optimal, heat-stress, and water-stress field conditions over two cropping seasons (2019/2020 and 2021/2022)”
e2“Lentil (Lens culinaris ssp. culinaris Medik.)”
Claim · model-written summary
Water stress caused a greater reduction of yield and yield components in cultivated lentil accessions.
- Taxon
- lentilLens culinarise2
- Material
- cultivated accessionse0
- Treatment
- Water stresse0
- Outcome
- yield and yield componente0
- Direction
- reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water stress caused greater yield and yield component reduction in cultivated accessions”
e2“Lentil (Lens culinaris ssp. culinaris Medik.)”
Claim · model-written summary
Heat stress caused a higher reduction in seed and pod numbers in crop wild relative lentil accessions.
- Taxon
- lentilLens culinarise2
- Material
- CWR accessionse0
- Treatment
- heat stresse0
- Outcome
- seed and pod numberse0
- Direction
- higher reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“whereas heat stress caused higher reduction in seed and pod numbers in CWR accessions”
e2“Lentil (Lens culinaris ssp. culinaris Medik.)”
Claim · model-written summary
Accession IG72532 of L. nigricans is drought tolerant.
- Taxon
- L. nigricans
_1_(29320808646).jpg?width=60)
Lens nigricanse0 - Material
- IG72532e0
- Outcome
- drought tolerante0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_1_(29320808646).jpg?width=500)
Verbatim
e0“Accessions IG72532 (L. nigricans), IG72562 (L. c. odemensis), IG72830 (L. c. tomentosus), and four accessions of L. c. orientalis (IG16028, IG16038, IG136670, IG136672) were identified as drought tolerant”
Claim · model-written summary
Accession IG72562 of L. c. odemensis is drought tolerant.
Verbatim
e0“Accessions IG72532 (L. nigricans), IG72562 (L. c. odemensis), IG72830 (L. c. tomentosus), and four accessions of L. c. orientalis (IG16028, IG16038, IG136670, IG136672) were identified as drought tolerant”
Claim · model-written summary
Accession IG72830 of L. c. tomentosus is drought tolerant.
Verbatim
e0“Accessions IG72532 (L. nigricans), IG72562 (L. c. odemensis), IG72830 (L. c. tomentosus), and four accessions of L. c. orientalis (IG16028, IG16038, IG136670, IG136672) were identified as drought tolerant”
Claim · model-written summary
Four accessions of L. c. orientalis are drought tolerant.
Verbatim
e0“Accessions IG72532 (L. nigricans), IG72562 (L. c. odemensis), IG72830 (L. c. tomentosus), and four accessions of L. c. orientalis (IG16028, IG16038, IG136670, IG136672) were identified as drought tolerant”
Claim · model-written summary
Seven cultivated lentil accessions are heat tolerant.
- Taxon
- lentilLens culinarise1
- Material
- cultivated accessionse0
- Outcome
- heat tolerante0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seven cultivated accessions were identified as heat tolerant”
e1“Lentil (Lens culinaris ssp. culinaris Medik.)”
Claim · model-written summary
A wide range of genetic variation for heat and drought tolerance exists across lentil accessions.
- Taxon
- lentilLens culinarise0
- Outcome
- genetic variation for heat and drought tolerancee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A wide range of genetic variation for heat and drought tolerance was observed across the lentil accessions”
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