Abstract
Abstract. In Algeria, drought is a major abiotic constraint responsible for the low productivity of durum wheat. This study aims to identify some mechanisms involved in water deficit adaptation and tolerance. The tolerance mechanism is conditioned by different characteristics governing the regulation of transpiration in its two forms from the leaf. This study analyzed 23 durum wheat genotypes under two water regimes: irrigated and rain-fed.The results of this study showed that the variation of the transpiration level is strongly conditioned by the leaf micro morphological and structural parameters represented by a reduction in woody vessels diameter, the compaction of the mesophyll. Indeed, the reduction of transpiration is due to the decrease in stomata density on the lower side of the leaf. This reduction resulted in a reduction of coating cells size which induces the approach of the stomata fills.
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Claims 3
Claim · model-written summary
Lower woody vessel diameter and compact mesophyll conditioned variation in transpiration.
- Taxon
- durum wheat
Triticum turgidum subsp. durumt0 - Organ / stage
- leafe0
- Outcome
- transpiration levele0
- Qualifier
- reduction in woody vessels diameter, the compaction of the mesophylle0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the variation of the transpiration level is strongly conditioned by the leaf micro morphological and structural parameters represented by a reduction in woody vessels diameter, the compaction of the mesophyll”
t0“durum wheat”
Claim · model-written summary
Decreased stomatal density on the leaf underside reduced transpiration.
- Taxon
- durum wheatTriticum turgidum subsp. durumt0
- Organ / stage
- leafe0
- Outcome
- reduction of transpiratione0
- Qualifier
- decrease in stomata density on the lower side of the leafe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the reduction of transpiration is due to the decrease in stomata density on the lower side of the leaf”
t0“durum wheat”
Claim · model-written summary
Reduced stomatal density was associated with smaller coating cells and closer stomata.
- Taxon
- durum wheatTriticum turgidum subsp. durumt0
- Outcome
- reduction of coating cells sizee0
- Qualifier
- approach of the stomata fillse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This reduction resulted in a reduction of coating cells size which induces the approach of the stomata fills”
t0“durum wheat”