Abstract
Planting date may affect barley grown in semi-arid regions, where high temperature and drought stress are common during late crop development and maturation. The objective of this research was to study the effect of planting date on seedling emergence, yield and yield components, seed germination and vigor of two barley cultivars. Field emergence, yield and yield components and seed quality were measured for plants grown at two planting dates. Seed quality was estimated by the standard germination test, the germination rate index, the electrical conductivity of seed leachate, and the germination after accelerated aging (AA) test. Field emergence was higher for early planting date than that of late planting date for both cultivars. Number of spikes m , 100-grain weight and grain yield were higher in early planting date than those of late planting date. Planting date had no effect on seed quality except for the germination after AA test, due to seed dormancy. In conclusion, the improvement in grain yield of the earlyplanted barley might be due to the increase in field emergence and consequently the number of plants and spikes per unit area and/or the drought-stress avoidance of the early-planted barley. Planting date had no effect on seed quality except for the expression of seed dormancy in accelerated aging test. Further work is needed to identify more suitable accelerated aging conditions that do not induce seed dormancy to evaluate seed vigor in barley or to develop a treatment to overcome seed dormancy after the test.
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Claims 6
Claim · model-written summary
Early planting increased field emergence of barley compared with late planting.
- Taxon
- barley
.jpg?width=60)
Hordeum vulgaret0 - Treatment
- planting datee0
- Outcome
- Field emergencee0
- Direction
- highere0
- Comparator
- late planting datee0
- Setting
- semi-arid mediterranean conditionst0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
t0“seed yield and quality of barley grown under semi-arid mediterranean conditions”
e0“Field emergence was higher for early planting date than that of late planting date”
Claim · model-written summary
Early planting increased 100-grain weight and grain yield of barley compared with late planting.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- planting datee1
- Outcome
- 100-grain weight and grain yielde1
- Direction
- highere1
- Comparator
- late planting datee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“seed yield and quality of barley grown under semi-arid mediterranean conditions”
e1“Number of spikes m , 100-grain weight and grain yield were higher in early planting date than those of late planting date”
Claim · model-written summary
Early planting increased the number of spikes of barley compared with late planting.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- planting datee1
- Outcome
- Number of spikese1
- Direction
- highere1
- Comparator
- late planting datee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“seed yield and quality of barley grown under semi-arid mediterranean conditions”
e1“Number of spikes m , 100-grain weight and grain yield were higher in early planting date than those of late planting date”
Claim · model-written summary
Planting date had no effect on barley seed quality.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- Planting datee2
- Outcome
- seed qualitye2
- Direction
- no effecte2
- Qualifier
- except for the germination after AA teste2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“seed yield and quality of barley grown under semi-arid mediterranean conditions”
e2“Planting date had no effect on seed quality except for the germination after AA test, due to seed dormancy”
Claim · model-written summary
Planting date affected germination after the accelerated aging test of barley seed, attributed to seed dormancy.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- Planting datee2
- Outcome
- germination after AA teste2
- Qualifier
- due to seed dormancye2
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“seed yield and quality of barley grown under semi-arid mediterranean conditions”
e2“Planting date had no effect on seed quality except for the germination after AA test, due to seed dormancy”
Claim · model-written summary
The higher grain yield of early-planted barley might be due to increased field emergence.
- Taxon
- barleyHordeum vulgaret0
- Outcome
- grain yielde3
- Qualifier
- increase in field emergencee3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“seed yield and quality of barley grown under semi-arid mediterranean conditions”
e3“the improvement in grain yield of the earlyplanted barley might be due to the increase in field emergence”
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