Abstract
Although drought stress has been well documented as an effective parameter in decreasing crop production in arid and semi arid regions, developing and releasing new varieties which are adaptable to water deficit conditions can be a constructive program to overcome unsuitable environmental conditions. The present study was carried out to study the performance of durum and bread wheat genotypes in relation to yield and yield component under different water deficit conditions. The experiment was laid out in split plot based on a complete randomized block design, with three replications at Mashhad Agricultural Research stations in Iran. Irrigation regimes were considered as the main plots and included four levels. Sub-plots were assigned to five wheat genotypes, four durum promising lines and a bread wheat cultivar. The number of spike m -2, number of kernel spike -1 1000-kernel weight, plant height, day to maturity, maturity duration, harvest index, and grain yield were highly significant (P<0.01) affected by water deficit conditions and genotype effects. In addition to this, the effect of genotype on the biological and grain yield was significant (P<0.05). It was observed that water limitation significantly decreased plant height in the early water deficit, while water limitation during double ridge to anthesis reduced the number of spike m -and2 number of kernel spike -1. Besides, water deficit condition at post-anthesis decreased the number of day to maturity, maturity duration, 1000-kernel weight, harvest index and grain yield. Chamran bread wheat cultivar and a promising durum wheat genotype (RASCON37/BEJAH7) produced the highest values for the plant height, kernel numbers, harvest index traits and lastly grain yield compared to all the other genotypes. © 2010, INSInet Publication.
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Claims 12
Claim · model-written summary
Water deficit and genotype significantly affected yield components and maturity traits.
- Taxon
- Wheat
Triticum aestivumt0 - Treatment
- water deficit conditionse0
- Outcome
- number of spike m -2, number of kernel spike -1 1000-kernel weighte0
- Value
- P<0.01e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The number of spike m -2, number of kernel spike -1 1000-kernel weight, plant height, day to maturity, maturity duration, harvest index, and grain yield were highly significant (P<0.01) affected by water deficit conditions and genotype effects”
t0“Durum and Bread Wheat”
Claim · model-written summary
Genotype significantly affected biological yield.
- Taxon
- WheatTriticum aestivumt0
- Material
- genotypee0
- Outcome
- biologicale0
- Value
- P<0.05e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the effect of genotype on the biological and grain yield was significant (P<0.05)”
t0“Durum and Bread Wheat”
Claim · model-written summary
Genotype significantly affected grain yield.
- Taxon
- WheatTriticum aestivumt0
- Material
- genotypee0
- Outcome
- grain yielde0
- Value
- P<0.05e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the effect of genotype on the biological and grain yield was significant (P<0.05)”
t0“Durum and Bread Wheat”
Claim · model-written summary
Early water deficit significantly decreased plant height.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- water limitatione0
- Outcome
- plant heighte0
- Direction
- decreasede0
- Qualifier
- early water deficite0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“water limitation significantly decreased plant height in the early water deficit”
t0“Durum and Bread Wheat”
Claim · model-written summary
Deficit from double ridge to anthesis reduced spike number.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- water limitation during double ridge to anthesise0
- Outcome
- number of spikee0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“water limitation during double ridge to anthesis reduced the number of spike m -and2 number of kernel spike -1”
t0“Durum and Bread Wheat”
Claim · model-written summary
Deficit from double ridge to anthesis reduced kernels per spike.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- water limitation during double ridge to anthesise0
- Outcome
- number of kernel spike -1e0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“water limitation during double ridge to anthesis reduced the number of spike m -and2 number of kernel spike -1”
t0“Durum and Bread Wheat”
Claim · model-written summary
Postanthesis deficit decreased days to maturity and maturity duration.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- water deficit condition at post-anthesise0
- Outcome
- day to maturity, maturity duratione0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“water deficit condition at post-anthesis decreased the number of day to maturity, maturity duration, 1000-kernel weight, harvest index and grain yield”
t0“Durum and Bread Wheat”
Claim · model-written summary
Postanthesis deficit decreased 1000-kernel weight.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- water deficit condition at post-anthesise0
- Outcome
- 1000-kernel weighte0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“water deficit condition at post-anthesis decreased the number of day to maturity, maturity duration, 1000-kernel weight, harvest index and grain yield”
t0“Durum and Bread Wheat”
Claim · model-written summary
Postanthesis deficit decreased harvest index.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- water deficit condition at post-anthesise0
- Outcome
- harvest indexe0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“water deficit condition at post-anthesis decreased the number of day to maturity, maturity duration, 1000-kernel weight, harvest index and grain yield”
t0“Durum and Bread Wheat”
Claim · model-written summary
Postanthesis deficit decreased grain yield.
- Taxon
- WheatTriticum aestivumt0
- Treatment
- water deficit condition at post-anthesise0
- Outcome
- grain yielde0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“water deficit condition at post-anthesis decreased the number of day to maturity, maturity duration, 1000-kernel weight, harvest index and grain yield”
t0“Durum and Bread Wheat”
Claim · model-written summary
Chamran had the highest height, kernel number, harvest index and grain yield among genotypes.
- Taxon
- WheatTriticum aestivumt0
- Material
- Chamrane0
- Outcome
- plant height, kernel numbers, harvest index traitse0
- Direction
- higheste0
- Comparator
- all the other genotypese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Chamran bread wheat cultivar and a promising durum wheat genotype (RASCON37/BEJAH7) produced the highest values for the plant height, kernel numbers, harvest index traits and lastly grain yield compared to all the other genotypes”
t0“Durum and Bread Wheat”
Claim · model-written summary
RASCON37/BEJAH7 had the highest height, kernel number, harvest index and grain yield among genotypes.
- Taxon
- WheatTriticum aestivumt0
- Material
- RASCON37/BEJAH7e0
- Outcome
- grain yielde0
- Direction
- higheste0
- Comparator
- all the other genotypese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Chamran bread wheat cultivar and a promising durum wheat genotype (RASCON37/BEJAH7) produced the highest values for the plant height, kernel numbers, harvest index traits and lastly grain yield compared to all the other genotypes”
t0“Durum and Bread Wheat”
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