Abstract
The present investigation was carried out during 2015/2016 and 2016/2017 seasons at the Experimental Research Station, Faculty of Agriculture, Assiut University. The objectives of this investigation were to obtain information about the performance and genetic components of parental wheat genotypes and their F1s under normal and water stress conditions. The performance of all genotypes under water stress condition was lower than its performance under normal condition. The parent 6 (P6) was the earliest flowering under both conditions and the parent P5 under water stress condition (85.70 day), while the parents P1, P2,P4 andP6 gave the tallest spike under both of normal and water stress conditions. While, P1 and P2 gave the tallest spike under water stress condition. The hybrids (P4 × P5) and (P1 × P6) were the earliest among F1- hybrids under normal and water stress conditions, respectively. Furthermore, the hybrids (P1 × P3) and (P1× P4) gave the tallest spike under normal and water stress conditions, respectively. The mean of grain yield /plant for all genotypes was 32.70 g and 24.96 g under normal and water stress condition, respectively. The P6 gave the highest grain yield/ plant compared with other parental genotypes under both conditions. On the other hand, the highest grain yield /plant was obtained from the hybrids (P4 × P5) under both conditions. The results showed that the magnitude of SCA exceeded GCA ones for days from planting to 50 % heading trait, which indicating that the major portion of genetic variance was due to the non-additive gene effects. The ratio of GCA/SCA was noticed to be low for days from planting to 50 % heading trait, indicated the specific combining ability was more important than general combining ability variance. The ratio of GCA/SCA was low for Plant height except SCA under irrigation in the F1- hybrids. The ratio of GCA/SCA was 1.08 and 0.80 in the F1-hybrids under normal and water stress conditions, respectively. The good genotypes for plant height in the F1- hybrid under both environments were Entry 21 and Entry 20. While, the ratio of GCA/SCA was noticed to be low for spike length, indicated the specific combining ability was more important than general combining ability variance, which indicating that the major portion of genetic variance was due to the non-additive gene effects. The results showed that the magnitude GCA/SCA ratio for number of kernel/spike was 0.31 and 0.20 in the F1-hybrids under normal and water stress conditions, respectively, indicating that the non-additive were larger than additive effects in the inheritance of number of kernel/spike and both were highly significant. The ratios of GCA/SCA were less than the unity for grain yield/plant under both environments indicating that the non-additive gene action controlled the inheritance of grain yield/plant. The GCA/SCA ratio was 0.14 and 0.48 for 100-grain weight in the F1-hybrids under normal and water stress conditions, respectively, indicating predominance of non-additive gene effect in the inheritance of 100- grain weight
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Claims 20
Claim · model-written summary
Wheat genotypes performed worse under water stress than normal conditions.
- Taxon
- Bread Wheat
Triticum aestivumt0 - Material
- genotypese0
- Treatment
- water stress conditione0
- Outcome
- performancee0
- Direction
- lowere0
- Comparator
- normal conditione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The performance of all genotypes under water stress condition was lower than its performance under normal condition.”
t0“Bread Wheat”
Claim · model-written summary
P6 was the earliest flowering parent under both conditions.
- Taxon
- Bread WheatTriticum aestivumt0
- Material
- P6e0
- Outcome
- floweringe0
- Direction
- earlieste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The parent 6 (P6) was the earliest flowering under both conditions”
t0“Bread Wheat”
Claim · model-written summary
P5 flowered at 85.70 days under water stress.
- Taxon
- Bread WheatTriticum aestivumt0
- Material
- P5e0
- Outcome
- water stress conditione0
- Value
- 85.70 daye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the parent P5 under water stress condition (85.70 day)”
t0“Bread Wheat”
Claim · model-written summary
P1, P2, P4, and P6 had the tallest spikes under both conditions.
- Taxon
- Bread WheatTriticum aestivumt0
- Material
- P1, P2,P4 andP6e0
- Outcome
- spikee0
- Direction
- talleste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the parents P1, P2,P4 andP6 gave the tallest spike under both of normal and water stress conditions”
t0“Bread Wheat”
Claim · model-written summary
P4 × P5 was the earliest F1 hybrid under normal conditions.
- Taxon
- Bread WheatTriticum aestivumt0
- Material
- P4 × P5e0
- Outcome
- F1- hybridse0
- Direction
- earlieste0
- Qualifier
- normale0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The hybrids (P4 × P5) and (P1 × P6) were the earliest among F1- hybrids under normal and water stress conditions, respectively”
t0“Bread Wheat”
Claim · model-written summary
P1 × P6 was the earliest F1 hybrid under water stress.
- Taxon
- Bread WheatTriticum aestivumt0
- Material
- P1 × P6e0
- Outcome
- F1- hybridse0
- Direction
- earlieste0
- Qualifier
- water stress conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The hybrids (P4 × P5) and (P1 × P6) were the earliest among F1- hybrids under normal and water stress conditions, respectively”
t0“Bread Wheat”
Claim · model-written summary
P1 × P3 had the tallest spike under normal conditions.
- Taxon
- Bread WheatTriticum aestivumt0
- Material
- P1 × P3e0
- Outcome
- spikee0
- Direction
- talleste0
- Qualifier
- normale0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the hybrids (P1 × P3) and (P1× P4) gave the tallest spike under normal and water stress conditions, respectively”
t0“Bread Wheat”
Claim · model-written summary
P1 × P4 had the tallest spike under water stress.
- Taxon
- Bread WheatTriticum aestivumt0
- Material
- P1× P4e0
- Outcome
- spikee0
- Direction
- talleste0
- Qualifier
- water stress conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the hybrids (P1 × P3) and (P1× P4) gave the tallest spike under normal and water stress conditions, respectively”
t0“Bread Wheat”
Claim · model-written summary
Mean grain yield per plant was 32.70 g in normal conditions.
- Taxon
- Bread WheatTriticum aestivumt0
- Outcome
- grain yield /plante0
- Value
- 32.70 ge0
- Qualifier
- normale0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The mean of grain yield /plant for all genotypes was 32.70 g and 24.96 g under normal and water stress condition, respectively”
t0“Bread Wheat”
Claim · model-written summary
Mean grain yield per plant was 24.96 g under water stress.
- Taxon
- Bread WheatTriticum aestivumt0
- Outcome
- grain yield /plante0
- Value
- 24.96 ge0
- Qualifier
- water stress conditione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The mean of grain yield /plant for all genotypes was 32.70 g and 24.96 g under normal and water stress condition, respectively”
t0“Bread Wheat”
Claim · model-written summary
P6 had the highest parental grain yield per plant under both conditions.
- Taxon
- Bread WheatTriticum aestivumt0
- Material
- P6e0
- Outcome
- grain yield/ plante0
- Direction
- higheste0
- Comparator
- other parental genotypese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The P6 gave the highest grain yield/ plant compared with other parental genotypes under both conditions”
t0“Bread Wheat”
Claim · model-written summary
P4 × P5 had the highest hybrid grain yield per plant under both conditions.
- Taxon
- Bread WheatTriticum aestivumt0
- Material
- P4 × P5e0
- Outcome
- grain yield /plante0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the highest grain yield /plant was obtained from the hybrids (P4 × P5) under both conditions”
t0“Bread Wheat”
Claim · model-written summary
Specific combining ability exceeded general combining ability for days to 50% heading, indicating nonadditive effects.
- Taxon
- Bread WheatTriticum aestivumt0
- Outcome
- days from planting to 50 % heading traite0
- Direction
- exceedede0
- Qualifier
- non-additive gene effectse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the magnitude of SCA exceeded GCA ones for days from planting to 50 % heading trait, which indicating that the major portion of genetic variance was due to the non-additive gene effects”
t0“Bread Wheat”
Claim · model-written summary
Plant height showed low GCA/SCA ratios, except for the stated irrigated F1 exception.
- Taxon
- Bread WheatTriticum aestivumt0
- Outcome
- ratio of GCA/SCAe0
- Direction
- lowe0
- Qualifier
- Plant height except SCA under irrigatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The ratio of GCA/SCA was low for Plant height except SCA under irrigation in the F1- hybrids”
t0“Bread Wheat”
Claim · model-written summary
GCA/SCA for plant height was 1.08 under normal conditions and 0.80 under water stress.
- Taxon
- Bread WheatTriticum aestivumt0
- Outcome
- ratio of GCA/SCAe0
- Value
- 1.08 and 0.80e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The ratio of GCA/SCA was 1.08 and 0.80 in the F1-hybrids under normal and water stress conditions, respectively”
t0“Bread Wheat”
Claim · model-written summary
Entry 21 and Entry 20 were favorable F1 plant height genotypes under both environments.
- Taxon
- Bread WheatTriticum aestivumt0
- Material
- Entry 21 and Entry 20e0
- Outcome
- plant heighte0
- Direction
- goode0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The good genotypes for plant height in the F1- hybrid under both environments were Entry 21 and Entry 20”
t0“Bread Wheat”
Claim · model-written summary
Spike length had low GCA/SCA, indicating predominant nonadditive variance.
- Taxon
- Bread WheatTriticum aestivumt0
- Outcome
- spike lengthe0
- Direction
- lowe0
- Qualifier
- non-additive gene effectse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the ratio of GCA/SCA was noticed to be low for spike length, indicated the specific combining ability was more important than general combining ability variance, which indicating that the major portion of genetic variance was due to the non-additive gene effects”
t0“Bread Wheat”
Claim · model-written summary
Kernel number per spike had GCA/SCA ratios of 0.31 and 0.20 under normal and water stress, respectively, with significant nonadditive effects.
- Taxon
- Bread WheatTriticum aestivumt0
- Outcome
- number of kernel/spikee0
- Direction
- largere0
- Value
- 0.31 and 0.20e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“GCA/SCA ratio for number of kernel/spike was 0.31 and 0.20 in the F1-hybrids under normal and water stress conditions, respectively, indicating that the non-additive were larger than additive effects in the inheritance of number of kernel/spike and both were highly significant”
t0“Bread Wheat”
Claim · model-written summary
Grain yield per plant had GCA/SCA below unity under both environments, indicating nonadditive inheritance.
- Taxon
- Bread WheatTriticum aestivumt0
- Outcome
- grain yield/plante0
- Direction
- less than the unitye0
- Qualifier
- non-additive gene actione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The ratios of GCA/SCA were less than the unity for grain yield/plant under both environments indicating that the non-additive gene action controlled the inheritance of grain yield/plant”
t0“Bread Wheat”
Claim · model-written summary
Hundred-grain weight had GCA/SCA ratios of 0.14 and 0.48 under normal and water stress, indicating nonadditive effects.
- Taxon
- Bread WheatTriticum aestivumt0
- Outcome
- 100-grain weighte0
- Value
- 0.14 and 0.48e0
- Qualifier
- non-additive gene effecte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The GCA/SCA ratio was 0.14 and 0.48 for 100-grain weight in the F1-hybrids under normal and water stress conditions, respectively, indicating predominance of non-additive gene effect in the inheritance of 100- grain weight”
t0“Bread Wheat”