Abstract
Performance and stability of 13 maize single cross hybrids were estimated under five different environments in Egypt during 2013 summer season. A randomized complete block design was used at each environment. Mean squares due to environments, Genotypes and G x E interaction were highly significant for grain yield and other agronomic traits. Based on combined data H2 possessed the highest grain yield (5.15 kg/plot) and significantly outyielded the check hybrid H13 (4.59 kg/plot). According to stability analysis the G x E (linear) interaction was not significant and had low portion of the G x E interaction when compared to the environment linear mean of squares for grain yield and the other studied. If the mean yield ( ), regression coefficient value (bi) and the deviation from the regression are considered together, then the most stable hybrid would be H2 and H9. The most stable hybrids according to the ecovalence method were H10, H8, H1, H9. These hybrids were not the best ranked for grain yield, except H9, which possessed the first rank for grain yield with 5.15 kg plote-1 (Plot size is 9.6 m2) and is considered as a promising hybrid for stability.
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Claims 6
Claim · model-written summary
Environment, genotype and their interaction had highly significant effects on grain yield and agronomic traits.
Zea maysNot reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mean squares due to environments, Genotypes and G x E interaction were highly significant for grain yield and other agronomic traits”
t0“Maize”
Claim · model-written summary
H2 yielded 5.15 kg/plot and significantly exceeded check hybrid H13.
- Material
- H2e0
- Outcome
- grain yielde0
- Direction
- outyieldede0
- Value
- 5.15 kg/plote0
- Qualifier
- 4.59 kg/plote0
- Comparator
- H13e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“H2 possessed the highest grain yield (5.15 kg/plot) and significantly outyielded the check hybrid H13 (4.59 kg/plot)”
t0“Maize”
Claim · model-written summary
The linear genotype by environment interaction for grain yield was not significant and had a low share of the interaction.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the G x E (linear) interaction was not significant and had low portion of the G x E interaction when compared to the environment linear mean of squares for grain yield”
t0“Maize”
Claim · model-written summary
H2 and H9 were the most stable under combined mean yield and regression criteria.
- Outcome
- most stable hybride0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the most stable hybrid would be H2 and H9”
t0“Maize”
Claim · model-written summary
Ecovalence analysis identified H10, H8, H1 and H9 as the most stable hybrids.
- Outcome
- most stable hybridse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The most stable hybrids according to the ecovalence method were H10, H8, H1, H9”
t0“Maize”
Claim · model-written summary
H9 ranked first for grain yield at 5.15 kg plote-1 and was considered promising for stability.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“H9, which possessed the first rank for grain yield with 5.15 kg plote-1 (Plot size is 9.6 m2) and is considered as a promising hybrid for stability”
t0“Maize”