Abstract
Abstract This study aims to evaluate the role of genetic diversity originated from three-way crosses of landraces and synthetic bread wheat derivatives attempted with elite cultivars to identify the genotypes having better grain yield as well as better starch contents under flowering stage drought stress. In total, 50 genotypes comprised of 47 derivatives of landraces and synthetics, and three standard varieties were grown in the fields of CIMMYT, Obregon following alpha lattice design with two replications. Drought stress was imposed by stopping the irrigation before anthesis and post-anthesis stages. Different traits related to physiological adaptations, earliness, grain yield and starch contents were decreased under drought stress except amylose which increased significantly. Canopy temperature depression was not significantly affected by drought stress. Further, we identified strong correlation of grain yield with plant height, normalized difference in vegetation index, plant maturity, spike length, grain number and thousand grain weight but negative with canopy temperature depression. Non-significant correlation of amylose and amylopectin was recorded with grain yield. Results revealed that genetic diversity derived from landraces and synthetic bread wheat can improve grain yield and starch contents but simultaneous improvement of both is elusive.
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Claims 9
Claim · model-written summary
Drought stress decreased grain yield and starch contents in bread wheat.
- Taxon
- bread wheat
Triticum aestivumt0 - Treatment
- drought stresse1
- Outcome
- grain yield and starch contentse1
- Direction
- decreasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“bread wheat”
e1“Different traits related to physiological adaptations, earliness, grain yield and starch contents were decreased under drought stress except amylose which increased significantly”
Claim · model-written summary
Drought stress decreased physiological adaptations and earliness in bread wheat.
- Taxon
- bread wheatTriticum aestivumt0
- Treatment
- drought stresse1
- Outcome
- physiological adaptations, earlinesse1
- Direction
- decreasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“bread wheat”
e1“Different traits related to physiological adaptations, earliness, grain yield and starch contents were decreased under drought stress except amylose which increased significantly”
Claim · model-written summary
Drought stress increased amylose significantly in bread wheat.
- Taxon
- bread wheatTriticum aestivumt0
- Treatment
- drought stresse1
- Outcome
- amylosee1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“bread wheat”
e1“Different traits related to physiological adaptations, earliness, grain yield and starch contents were decreased under drought stress except amylose which increased significantly”
Claim · model-written summary
Canopy temperature depression was not significantly affected by drought stress in bread wheat.
- Taxon
- bread wheatTriticum aestivumt0
- Treatment
- drought stresse2
- Outcome
- canopy temperature depressione2
- Direction
- not significantly affectede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“bread wheat”
e2“Canopy temperature depression was not significantly affected by drought stress”
Claim · model-written summary
Grain yield correlated strongly and positively with plant height, normalized difference in vegetation index and plant maturity in bread wheat.
- Taxon
- bread wheatTriticum aestivumt0
- Outcome
- grain yielde3
- Direction
- increaseinferrede3
- Qualifier
- plant height, normalized difference in vegetation index, plant maturitye3
- Setting
- CIMMYT, Obregone6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“bread wheat”
e3“we identified strong correlation of grain yield with plant height, normalized difference in vegetation index, plant maturity, spike length, grain number and thousand grain weight but negative with canopy temperature depression”
e6“grown in the fields of CIMMYT, Obregon”
Claim · model-written summary
Grain yield correlated strongly and positively with spike length, grain number and thousand grain weight in bread wheat.
- Taxon
- bread wheatTriticum aestivumt0
- Outcome
- grain yielde3
- Direction
- increaseinferrede3
- Qualifier
- spike length, grain number and thousand grain weighte3
- Setting
- CIMMYT, Obregone6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“bread wheat”
e3“we identified strong correlation of grain yield with plant height, normalized difference in vegetation index, plant maturity, spike length, grain number and thousand grain weight but negative with canopy temperature depression”
e6“grown in the fields of CIMMYT, Obregon”
Claim · model-written summary
Grain yield correlated negatively with canopy temperature depression in bread wheat.
- Taxon
- bread wheatTriticum aestivumt0
- Outcome
- grain yielde3
- Direction
- decreaseinferrede3
- Qualifier
- negative with canopy temperature depressione3
- Setting
- CIMMYT, Obregone6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“bread wheat”
e3“we identified strong correlation of grain yield with plant height, normalized difference in vegetation index, plant maturity, spike length, grain number and thousand grain weight but negative with canopy temperature depression”
e6“grown in the fields of CIMMYT, Obregon”
Claim · model-written summary
Amylose and amylopectin showed a non-significant correlation with grain yield in bread wheat.
- Taxon
- bread wheatTriticum aestivumt0
- Outcome
- amylose and amylopectine4
- Direction
- no_changeinferrede4
- Qualifier
- Non-significant correlatione4
- Setting
- CIMMYT, Obregone6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“bread wheat”
e4“Non-significant correlation of amylose and amylopectin was recorded with grain yield”
e6“grown in the fields of CIMMYT, Obregon”
Claim · model-written summary
Genetic diversity derived from landraces and synthetic bread wheat can improve grain yield and starch contents, but simultaneous improvement of both is elusive.
- Taxon
- bread wheatTriticum aestivumt0
- Outcome
- grain yield and starch contentse5
- Qualifier
- simultaneous improvement of both is elusivee5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“bread wheat”
e5“genetic diversity derived from landraces and synthetic bread wheat can improve grain yield and starch contents but simultaneous improvement of both is elusive”
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