Abstract
Under water deficit conditions, declining photosynthesis and the subsequent decline in assimilates during the grain filling stage can increase the contribution of pre-anthesis assimilates stored in the stems, to grain filling in order to prevent severe reduction in grain yield. Results of the present study, which tested five durum and bread wheat genotypes under four irrigation regimes in different growth and developmental stages, have shown that apart from the contribution of pre-anthesis assimilates to grain filling, which increased during the one-leaf until grain filling period under water deficit, dry matter translocation and dry matter translocation efficiency decreased at the floral initiation to grain filling stage. The remobilization contribution of pre-anthesis assimilates increased by 20 under water limitation during grain filling compared to optimum irrigation. In addition to this, genotype G2 (durum wheat) and cultivar G3 (bread wheat) exhibited the highest contribution of preanthesis assimilates to grain filling, which was associated with longer day to the heading and the plant height under the optimum moisture conditions. Furthermore, the spike dry weight, spike harvest index and spike partitioning coefficient were also higher in the G2 and G3 genotypes. © 2009, INSInet Publication.
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The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 8
Claim · model-written summary
Pre-anthesis assimilate contribution to grain filling increased under water deficit from one-leaf to grain filling.
- Taxon
- durum and bread wheatt0
- Treatment
- water deficite0
- Outcome
- contribution of pre-anthesis assimilates to grain fillinge0
- Direction
- increasede0
- Qualifier
- one-leaf until grain filling periode0
Not reportedComparator
Verbatim
e0“the contribution of pre-anthesis assimilates to grain filling, which increased during the one-leaf until grain filling period under water deficit”
t0“Durum and Bread Wheat”
Claim · model-written summary
Dry matter translocation decreased with water deficit at floral initiation to grain filling.
- Taxon
- durum and bread wheatt0
- Treatment
- water deficite1
- Outcome
- dry matter translocatione0
- Direction
- decreasede0
- Qualifier
- floral initiation to grain filling stagee0
Not reportedComparator
Verbatim
e0“dry matter translocation and dry matter translocation efficiency decreased at the floral initiation to grain filling stage”
e1“under water deficit”
t0“Durum and Bread Wheat”
Claim · model-written summary
Dry matter translocation efficiency decreased at floral initiation to grain filling.
- Taxon
- durum and bread wheatt0
- Treatment
- water deficite1
- Outcome
- dry matter translocation efficiencye0
- Direction
- decreasede0
- Qualifier
- floral initiation to grain filling stagee0
Not reportedComparator
Verbatim
e0“dry matter translocation and dry matter translocation efficiency decreased at the floral initiation to grain filling stage”
e1“under water deficit”
t0“Durum and Bread Wheat”
Claim · model-written summary
Water limitation during grain filling increased remobilization contribution by 20 versus optimum irrigation.
Verbatim
e0“The remobilization contribution of pre-anthesis assimilates increased by 20 under water limitation during grain filling compared to optimum irrigation”
t0“Durum and Bread Wheat”
Claim · model-written summary
G2 durum wheat had the highest contribution of preanthesis assimilates to grain filling.
- Taxon
- durum wheat
Triticum turgidum subsp. durume0 - Material
- G2e0
- Outcome
- contribution of preanthesis assimilates to grain fillinge0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“genotype G2 (durum wheat) and cultivar G3 (bread wheat) exhibited the highest contribution of preanthesis assimilates to grain filling”
Claim · model-written summary
G3 bread wheat had the highest contribution of preanthesis assimilates to grain filling.
- Taxon
- bread wheat
Triticum aestivume0 - Material
- G3e0
- Outcome
- contribution of preanthesis assimilates to grain fillinge0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“genotype G2 (durum wheat) and cultivar G3 (bread wheat) exhibited the highest contribution of preanthesis assimilates to grain filling”
Claim · model-written summary
Higher assimilate contribution in G2 and G3 was associated with longer time to heading and plant height under optimum moisture.
Verbatim
e0“genotype G2 (durum wheat) and cultivar G3 (bread wheat) exhibited the highest contribution of preanthesis assimilates to grain filling, which was associated with longer day to the heading and the plant height under the optimum moisture conditions”
t0“Durum and Bread Wheat”
Claim · model-written summary
Spike dry weight, harvest index and partitioning coefficient were higher in G2 and G3.
Verbatim
e0“the spike dry weight, spike harvest index and spike partitioning coefficient were also higher in the G2 and G3 genotypes”
t0“Durum and Bread Wheat”
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