Abstract
The current research focused on assessing the genetic inheritance of yield-associated characteristics in bread wheat through analysis of six populations: two parents (P1 and P2), F1and F2 generation and their two backcrosses (BC1 and BC2) derived from three crosses; C1 (Misr3 × Misr4), C2 (Line2× Misr3) and C3 (Misr 4 × Line 1(. The mean values of F2 were generally lower than those of F1. However, some F2 individuals exceeded the parental limits suggesting the occurrence of transgressive segregation. Scaling tests revealed that many traits were influenced by interactions among genes (epistasis), so simple additive models were inadequate. All investigated characteristics were governed by both additive and non-additive genetic contributions, with dominance effects being more pronounced than additive ones in most instances. Broad-sense heritability estimates were generally elevated, whereas narrow-sense heritability exhibited low to moderate levels. Expected genetic advance were small to moderate across most characteristics. In general, the F1 generation of the third cross (Misr4 × Line1) exhibited the highest mean grain yield and superior component performance.
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Claims 8
Claim · model-written summary
Mean values of F2 were generally lower than those of F1.
- Taxon
- Bread Wheat
Triticum aestivumt0 - Outcome
- mean values of F2e0
- Direction
- lowere0
- Comparator
- those of F1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Bread Wheat”
e0“The mean values of F2 were generally lower than those of F1”
Claim · model-written summary
Some F2 individuals exceeded the parental limits, suggesting transgressive segregation.
- Taxon
- Bread WheatTriticum aestivumt0
- Outcome
- F2 individuals exceeded the parental limitse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Bread Wheat”
e0“some F2 individuals exceeded the parental limits suggesting the occurrence of transgressive segregation”
Claim · model-written summary
Scaling tests showed many traits were influenced by gene interactions (epistasis), so simple additive models were inadequate.
- Taxon
- Bread WheatTriticum aestivumt0
- Outcome
- interactions among genes (epistasis)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Bread Wheat”
e0“Scaling tests revealed that many traits were influenced by interactions among genes (epistasis), so simple additive models were inadequate”
Claim · model-written summary
All traits were governed by additive and non-additive effects, with dominance more pronounced than additive effects in most cases.
- Taxon
- Bread WheatTriticum aestivumt0
- Outcome
- dominance effects being more pronounced than additive onese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Bread Wheat”
e0“All investigated characteristics were governed by both additive and non-additive genetic contributions, with dominance effects being more pronounced than additive ones in most instances”
Claim · model-written summary
Broad-sense heritability estimates were generally elevated.
- Taxon
- Bread WheatTriticum aestivumt0
- Outcome
- Broad-sense heritability estimatese0
- Direction
- elevatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Bread Wheat”
e0“Broad-sense heritability estimates were generally elevated”
Claim · model-written summary
Narrow-sense heritability was low to moderate.
- Taxon
- Bread WheatTriticum aestivumt0
- Outcome
- narrow-sense heritabilitye0
- Direction
- low to moderatee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Bread Wheat”
e0“narrow-sense heritability exhibited low to moderate levels”
Claim · model-written summary
Expected genetic advance was small to moderate across most characteristics.
- Taxon
- Bread WheatTriticum aestivumt0
- Outcome
- Expected genetic advancee0
- Direction
- small to moderatee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Bread Wheat”
e0“Expected genetic advance were small to moderate across most characteristics”
Claim · model-written summary
The F1 of the third cross (Misr4 x Line1) had the highest mean grain yield and superior component performance.
- Taxon
- Bread WheatTriticum aestivumt0
- Material
- third cross (Misr4 × Line1)e0
- Outcome
- highest mean grain yield and superior component performancee0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Bread Wheat”
e0“the F1 generation of the third cross (Misr4 × Line1) exhibited the highest mean grain yield and superior component performance”