Abstract
Summary Lentil frequently suffers from drought stress towards the end of the growing season in rainfed Mediterranean farming systems. This study aimed to quantify the contribution of yield potential under irrigated conditions and of drought escape to the adaptation of lentils to drought, and to identify traits of value in selection for adaptation to a rain-fed Mediterranean environment. Twenty-five diverse lentil lines were sown under both irrigated and rainfed conditions in the 1987/88 and 1988/89 seasons in northern Syria. In 1987/88 the total seasonal rainfall was 403 mm and average rainfed biomass and seed yields were 5.0 and 1.8 t ha -l , respectively. In contrast, in 1988/89 the total season rainfall was 180 mm and average biomass and seed yields were only 0.67 and 0.12 t ha -1 , respectively. Early vigour (estimated as a visual score) and percentage ground cover were strongly associated with final biomass, and were of value in predicting economic yield (seed + straw). Early maturity was correlated with seed yield. In the dry season 1988/89, 49% of the variation in seed yield among lines was accounted for by variation in flowering time. Drought escape was clearly the key response to drought. For severely drought-prone areas, selection for early flowering is therefore required. Variation in flowering time and seed yield under irrigated conditions accounted for 62% of seed yield variation under drought stress.
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Claims 12
Claim · model-written summary
In 1987/88, mean rainfed lentil biomass was 5.0 t ha -l.
- Taxon
- Lentil
Lens culinarist0 - Outcome
- biomasse0
- Value
- 5.0e0
- Qualifier
- 403 mme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Lentil”
e0“In 1987/88 the total seasonal rainfall was 403 mm and average rainfed biomass and seed yields were 5.0 and 1.8 t ha -l , respectively”
Claim · model-written summary
In 1987/88, mean rainfed seed yield was 1.8 t ha -l.
- Taxon
- LentilLens culinarist0
- Outcome
- seed yieldse0
- Value
- 1.8 t ha -le0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Lentil”
e0“average rainfed biomass and seed yields were 5.0 and 1.8 t ha -l , respectively”
Claim · model-written summary
In the drier 1988/89 season, mean biomass was 0.67 t ha -1.
- Taxon
- LentilLens culinarist0
- Outcome
- biomasse0
- Value
- 0.67e0
- Qualifier
- 180 mme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Lentil”
e0“In contrast, in 1988/89 the total season rainfall was 180 mm and average biomass and seed yields were only 0.67 and 0.12 t ha -1 , respectively”
Claim · model-written summary
In the drier 1988/89 season, mean seed yield was 0.12 t ha -1.
- Taxon
- LentilLens culinarist0
- Outcome
- seed yieldse0
- Value
- 0.12 t ha -1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Lentil”
e0“average biomass and seed yields were only 0.67 and 0.12 t ha -1 , respectively”
Claim · model-written summary
Early vigour was strongly associated with final biomass.
- Taxon
- LentilLens culinarist0
- Organ / stage
- Early vigoure0
- Outcome
- final biomasse0
Not reportedMaterialDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Lentil”
e0“Early vigour (estimated as a visual score) and percentage ground cover were strongly associated with final biomass”
Claim · model-written summary
Percentage ground cover was strongly associated with final biomass.
- Taxon
- LentilLens culinarist0
- Organ / stage
- percentage ground covere0
- Outcome
- final biomasse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Lentil”
e0“percentage ground cover were strongly associated with final biomass”
Claim · model-written summary
Early vigour and ground cover predicted economic yield.
- Taxon
- LentilLens culinarist0
- Outcome
- economic yield (seed + straw)e0
Not reportedOrgan / stageDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Lentil”
e0“were of value in predicting economic yield (seed + straw)”
Claim · model-written summary
Early maturity correlated with seed yield.
- Taxon
- LentilLens culinarist0
- Organ / stage
- Early maturitye0
- Outcome
- seed yielde0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Lentil”
e0“Early maturity was correlated with seed yield”
Claim · model-written summary
Flowering time accounted for 49% of seed yield variation among lines in dry 1988/89.
- Taxon
- LentilLens culinarist0
- Organ / stage
- flowering timee0
- Outcome
- variation in seed yielde0
- Value
- 49%e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Lentil”
e0“In the dry season 1988/89, 49% of the variation in seed yield among lines was accounted for by variation in flowering time”
Claim · model-written summary
Drought escape was identified as the key drought response.
- Taxon
- LentilLens culinarist0
- Outcome
- Drought escapee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Lentil”
e0“Drought escape was clearly the key response to drought”
Claim · model-written summary
Selection for early flowering is required in severely drought-prone areas.
- Taxon
- LentilLens culinarist0
- Outcome
- selection for early floweringe0
- Qualifier
- severely drought-prone arease0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Lentil”
e0“For severely drought-prone areas, selection for early flowering is therefore required”
Claim · model-written summary
Flowering time and irrigated seed yield together accounted for 62% of seed yield variation under drought.
- Taxon
- LentilLens culinarist0
- Organ / stage
- flowering timee0
- Outcome
- seed yield variation under drought stresse0
- Value
- 62%e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Lentil”
e0“Variation in flowering time and seed yield under irrigated conditions accounted for 62% of seed yield variation under drought stress”