Abstract
Micronutrient malnutrition is a serious health issue affecting billions of people in developing countries. Peanut is rich in several mineral elements required for human nutrition. The objective of this study was to understand genetic variability and inheritance pattern of phosphorus (P), potash (K), zinc (Zn) and iron (Fe) concentrations in F2 and F3 generations of two peanut crosses namely Girnar-3 × FDRS-10 (Cross-A) and TG-37A × FDRS-10 (Cross-B). Pshell, Znshell, Kshell, Feshell, and Fekernel were positively skewed indicating additive gene action. Kurtosis formost of the characters moved in positive direction from F2 to F3 generation indicating a reduction in variation as generation advances.Phenotypic coefficient of variance (PCV) and genotypic coefficient of variance (GCV) revealed that traits were under genetic control and possessed substantial variability and hence a good scope for improving these characters. Both additive and non-additive types of gene actions were observed with the predominance of additive gene action for the inheritance of P, K, Fe and Zn in shell and kernels. Dominance variance (H) also played an important role in the inheritance of P, K, Fe and Zn in peanut. Average degree of dominance for most of the traits was greaterthan unityindicating over dominance forthese traits. Mineral elements had significant association among themselves but very few associations with pod yield. Selection and hybridization followed by pedigree breeding method are suggested in the later generations for genetic improvement to identify high yielding peanut genotypes rich in P, K, Fe and Zn.
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Claims 9
Claim · model-written summary
Shell P, Zn, K and Fe and kernel Fe traits were positively skewed, suggesting additive gene action.
- Taxon
- peanut
Arachis hypogaeat0 - Outcome
- Pshell, Znshell, Kshell, Feshell, and Fekernele0
- Direction
- positively skewede0
- Qualifier
- additive gene actione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pshell, Znshell, Kshell, Feshell, and Fekernel were positively skewed indicating additive gene action”
t0“peanut”
Claim · model-written summary
Kurtosis became more positive from F2 to F3, suggesting less variation.
- Taxon
- peanutArachis hypogaeat0
- Outcome
- Kurtosis formost of the characterse0
- Direction
- positive directione0
- Qualifier
- reduction in variatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Kurtosis formost of the characters moved in positive direction from F2 to F3 generation indicating a reduction in variation”
t0“peanut”
Claim · model-written summary
Phenotypic and genotypic coefficients indicated substantial genetically controlled variability.
- Taxon
- peanutArachis hypogaeat0
- Outcome
- substantial variabilitye0
- Qualifier
- under genetic controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Phenotypic coefficient of variance (PCV) and genotypic coefficient of variance (GCV) revealed that traits were under genetic control and possessed substantial variability”
t0“peanut”
Claim · model-written summary
Additive and nonadditive gene actions affected P, K, Fe and Zn inheritance, with additive effects predominating.
- Taxon
- peanutArachis hypogaeat0
- Outcome
- inheritance of P, K, Fe and Zn in shell and kernelse0
- Direction
- predominancee0
- Qualifier
- additive and non-additive types of gene actionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both additive and non-additive types of gene actions were observed with the predominance of additive gene action for the inheritance of P, K, Fe and Zn in shell and kernels”
t0“peanut”
Claim · model-written summary
Dominance variance contributed to inheritance of P, K, Fe and Zn.
- Taxon
- peanutArachis hypogaeae0
- Outcome
- inheritance of P, K, Fe and Zne0
- Qualifier
- Dominance variance (H)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Dominance variance (H) also played an important role in the inheritance of P, K, Fe and Zn in peanut”
Claim · model-written summary
Most traits had an average degree of dominance above one, indicating overdominance.
- Taxon
- peanutArachis hypogaeat0
- Outcome
- Average degree of dominancee0
- Direction
- greaterthane0
- Value
- unitye0
- Qualifier
- over dominancee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Average degree of dominance for most of the traits was greaterthan unityindicating over dominance forthese traits”
t0“peanut”
Claim · model-written summary
Mineral elements were significantly associated with each other.
- Taxon
- peanutArachis hypogaeat0
- Compound
- Mineral elementse0
- Outcome
- Mineral elementse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mineral elements had significant association among themselves”
t0“peanut”
Claim · model-written summary
Mineral elements had few associations with pod yield.
- Taxon
- peanutArachis hypogaeat0
- Compound
- Mineral elementse1
- Outcome
- pod yielde0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“very few associations with pod yield”
e1“Mineral elements had significant association among themselves”
t0“peanut”
Claim · model-written summary
The authors suggest selection and hybridization followed by pedigree breeding in later generations.
- Taxon
- peanutArachis hypogaeae0
- Outcome
- Selection and hybridization followed by pedigree breeding methode0
- Qualifier
- later generationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Selection and hybridization followed by pedigree breeding method are suggested in the later generations for genetic improvement to identify high yielding peanut genotypes rich in P, K, Fe and Zn”