Abstract
Numbers of environmental stresses influence plant growth and development, which limits agricultural production and productivity, globally. High heat stress is a major factor that significantly reduced the wheat grain yield. Terminal heat stress adversely affects wheat plants resulting in low productivity. The ability of the plant material to mitigate the heat stress on yield may depend on the association between yield and other traits, and the variability of a trait will help identify desirable genotypes in a breeding program. For this purpose, sixty-four bread wheat genotypes were evaluated to assess genetic variability, heritability, correlations and path coefficient analysis of the traits. As result, highly significant differences in genotypes for all 15 morpho-physiological traits were observed. GCV and PCV exceeded 42% for total chlorophyll content and 16% for Main spike weight. Grain yield/plot was significantly and positively associated with spike length, spike weight, number of grains/spike, number of spikelets/spike, 1000-grain weight, biological yield/plot, GGR, total chlorophyll content and number of productive tillers/meter. As conclusion, the production of wheat in heat-stressed environment is greatly enhanced by the selection of key morphological and physiological features associated with grain yield. Five genotypes, P13833, P13828, P13031, P13723, and P13726, had high yields under heat stress condition and ought to be utilized as parents in breeding programs.
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Claims 18
Claim · model-written summary
Wheat genotypes differed significantly across 15 morphophysiological traits.
- Taxon
- wheat
Triticum aestivumt0 - Material
- genotypese0
- Outcome
- 15 morpho-physiological traitse0
- Direction
- differencese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“wheat”
e0“highly significant differences in genotypes for all 15 morpho-physiological traits were observed.”
Claim · model-written summary
GCV and PCV for total chlorophyll content exceeded 42%.
- Taxon
- wheatTriticum aestivumt0
- Outcome
- GCV and PCVe1
- Direction
- exceedede1
- Value
- 42%e1
- Qualifier
- total chlorophyll contente1
Not reportedOrgan / stage
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“wheat”
e1“GCV and PCV exceeded 42% for total chlorophyll content and 16% for Main spike weight.”
Claim · model-written summary
GCV and PCV for main spike weight exceeded 16%.
- Taxon
- wheatTriticum aestivumt0
- Outcome
- GCV and PCVe1
- Direction
- exceedede1
- Value
- 16%e1
- Qualifier
- Main spike weighte1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“wheat”
e1“GCV and PCV exceeded 42% for total chlorophyll content and 16% for Main spike weight.”
Claim · model-written summary
Grain yield per plot was positively associated with spike length.
- Taxon
- wheatTriticum aestivumt0
- Organ / stage
- spike lengthe2
- Outcome
- Grain yield/plote2
- Direction
- positively associatede2
- Qualifier
- spike lengthe2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“wheat”
e2“Grain yield/plot was significantly and positively associated with spike length, spike weight, number of grains/spike, number of spikelets/spike, 1000-grain weight, biological yield/plot, GGR, total chlorophyll content and number of productive tillers/meter.”
Claim · model-written summary
Grain yield per plot was positively associated with spike weight.
- Taxon
- wheatTriticum aestivumt0
- Organ / stage
- spike weighte2
- Outcome
- Grain yield/plote2
- Direction
- positively associatede2
- Qualifier
- spike weighte2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“wheat”
e2“Grain yield/plot was significantly and positively associated with spike length, spike weight, number of grains/spike, number of spikelets/spike, 1000-grain weight, biological yield/plot, GGR, total chlorophyll content and number of productive tillers/meter.”
Claim · model-written summary
Grain yield per plot was positively associated with number of grains/spike.
- Taxon
- wheatTriticum aestivumt0
- Organ / stage
- number of grains/spikee2
- Outcome
- Grain yield/plote2
- Direction
- positively associatede2
- Qualifier
- number of grains/spikee2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“wheat”
e2“Grain yield/plot was significantly and positively associated with spike length, spike weight, number of grains/spike, number of spikelets/spike, 1000-grain weight, biological yield/plot, GGR, total chlorophyll content and number of productive tillers/meter.”
Claim · model-written summary
Grain yield per plot was positively associated with number of spikelets/spike.
- Taxon
- wheatTriticum aestivumt0
- Organ / stage
- number of spikelets/spikee2
- Outcome
- Grain yield/plote2
- Direction
- positively associatede2
- Qualifier
- number of spikelets/spikee2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“wheat”
e2“Grain yield/plot was significantly and positively associated with spike length, spike weight, number of grains/spike, number of spikelets/spike, 1000-grain weight, biological yield/plot, GGR, total chlorophyll content and number of productive tillers/meter.”
Claim · model-written summary
Grain yield per plot was positively associated with 1000-grain weight.
- Taxon
- wheatTriticum aestivumt0
- Organ / stage
- 1000-grain weighte2
- Outcome
- Grain yield/plote2
- Direction
- positively associatede2
- Qualifier
- 1000-grain weighte2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“wheat”
e2“Grain yield/plot was significantly and positively associated with spike length, spike weight, number of grains/spike, number of spikelets/spike, 1000-grain weight, biological yield/plot, GGR, total chlorophyll content and number of productive tillers/meter.”
Claim · model-written summary
Grain yield per plot was positively associated with biological yield/plot.
- Taxon
- wheatTriticum aestivumt0
- Organ / stage
- biological yield/plote2
- Outcome
- Grain yield/plote2
- Direction
- positively associatede2
- Qualifier
- biological yield/plote2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“wheat”
e2“Grain yield/plot was significantly and positively associated with spike length, spike weight, number of grains/spike, number of spikelets/spike, 1000-grain weight, biological yield/plot, GGR, total chlorophyll content and number of productive tillers/meter.”
Claim · model-written summary
Grain yield per plot was positively associated with GGR.
- Taxon
- wheatTriticum aestivumt0
- Organ / stage
- GGRe2
- Outcome
- Grain yield/plote2
- Direction
- positively associatede2
- Qualifier
- GGRe2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“wheat”
e2“Grain yield/plot was significantly and positively associated with spike length, spike weight, number of grains/spike, number of spikelets/spike, 1000-grain weight, biological yield/plot, GGR, total chlorophyll content and number of productive tillers/meter.”
Claim · model-written summary
Grain yield per plot was positively associated with total chlorophyll content.
- Taxon
- wheatTriticum aestivumt0
- Organ / stage
- total chlorophyll contente2
- Outcome
- Grain yield/plote2
- Direction
- positively associatede2
- Qualifier
- total chlorophyll contente2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“wheat”
e2“Grain yield/plot was significantly and positively associated with spike length, spike weight, number of grains/spike, number of spikelets/spike, 1000-grain weight, biological yield/plot, GGR, total chlorophyll content and number of productive tillers/meter.”
Claim · model-written summary
Grain yield per plot was positively associated with number of productive tillers/meter.
- Taxon
- wheatTriticum aestivumt0
- Organ / stage
- number of productive tillers/metere2
- Outcome
- Grain yield/plote2
- Direction
- positively associatede2
- Qualifier
- number of productive tillers/metere2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“wheat”
e2“Grain yield/plot was significantly and positively associated with spike length, spike weight, number of grains/spike, number of spikelets/spike, 1000-grain weight, biological yield/plot, GGR, total chlorophyll content and number of productive tillers/meter.”
Claim · model-written summary
P13833 had high yield under heat stress.
- Taxon
- wheatTriticum aestivumt0
- Material
- P13833e3
- Outcome
- yieldse3
- Direction
- highe3
- Qualifier
- under heat stress conditione3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“wheat”
e3“Five genotypes, P13833, P13828, P13031, P13723, and P13726, had high yields under heat stress condition and ought to be utilized as parents in breeding programs.”
Claim · model-written summary
P13828 had high yield under heat stress.
- Taxon
- wheatTriticum aestivumt0
- Material
- P13828e3
- Outcome
- yieldse3
- Direction
- highe3
- Qualifier
- under heat stress conditione3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“wheat”
e3“Five genotypes, P13833, P13828, P13031, P13723, and P13726, had high yields under heat stress condition and ought to be utilized as parents in breeding programs.”
Claim · model-written summary
P13031 had high yield under heat stress.
- Taxon
- wheatTriticum aestivumt0
- Material
- P13031e3
- Outcome
- yieldse3
- Direction
- highe3
- Qualifier
- under heat stress conditione3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“wheat”
e3“Five genotypes, P13833, P13828, P13031, P13723, and P13726, had high yields under heat stress condition and ought to be utilized as parents in breeding programs.”
Claim · model-written summary
P13723 had high yield under heat stress.
- Taxon
- wheatTriticum aestivumt0
- Material
- P13723e3
- Outcome
- yieldse3
- Direction
- highe3
- Qualifier
- under heat stress conditione3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“wheat”
e3“Five genotypes, P13833, P13828, P13031, P13723, and P13726, had high yields under heat stress condition and ought to be utilized as parents in breeding programs.”
Claim · model-written summary
P13726 had high yield under heat stress.
- Taxon
- wheatTriticum aestivumt0
- Material
- P13726e3
- Outcome
- yieldse3
- Direction
- highe3
- Qualifier
- under heat stress conditione3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“wheat”
e3“Five genotypes, P13833, P13828, P13031, P13723, and P13726, had high yields under heat stress condition and ought to be utilized as parents in breeding programs.”
Claim · model-written summary
The five high-yield genotypes should be used as breeding parents.
- Taxon
- wheatTriticum aestivumt0
- Material
- Five genotypese3
- Outcome
- utilized as parents in breeding programse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“wheat”
e3“Five genotypes, P13833, P13828, P13031, P13723, and P13726, had high yields under heat stress condition and ought to be utilized as parents in breeding programs.”