Abstract
The present investigation was conducted to evaluate the various parameters like genetic variability, nature and magnitude of association and also the direct and indirect effects of different morphological and yield traits on kernel yield in 13 different new maize hybrids at Research farm, ANGRAU-Agricultural Research station, Vijayarai (A.P.) during rabi season of 2019-20. The Analysis of variance revealed that highly significant differences exist among the maize hybrids for all the traits studied except for initial plant stand and final plant stand. It emphasize that the studied experimental material possesses sufficient variability for all the morphological and yield traits which can be beneficial for selection in different breeding programmes. High GCV and PCV values were obtained for kernel yield per plant (kg), kernel yield (kg ha-1), plant height (cm), ear placement height (cm), number of kernels per cob, cob yield per plot (kg) and test weight (g). High heritability estimates coupled with genetic advance as percentage of mean was recorded for plant height, ear placement height, days to 50% pollen shed and test weight. Similarly, the traits kernel yield per plot, cob yield per plot, ear placement height, plant height and shelling percentage established. Highest significant positive association with kernel yield (kg ha-1) and the trait kernel yield per plot also showed highest positive direct effects indicating that these traits are more effective and these traits directly and or indirectly will contribute for achieving higher kernel yields and selection based on these traits would be more effective in hybrid maize breeding programmes
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Claims 9
Claim · model-written summary
Maize hybrids differed significantly for all studied traits except initial and final plant stand.
- Material
- maize hybridse0
- Outcome
- all the traits studied except for initial plant stand and final plant stande0
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“highly significant differences exist among the maize hybrids for all the traits studied except for initial plant stand and final plant stand”
Claim · model-written summary
High GCV and PCV occurred for kernel yield per plant, kernel yield, and plant height.
- Outcome
- GCV and PCV valuese0
- Direction
- Highe0
- Qualifier
- kernel yield per plant (kg), kernel yield (kg ha-1), plant height (cm)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“High GCV and PCV values were obtained for kernel yield per plant (kg), kernel yield (kg ha-1), plant height (cm)”
e1“in 13 different new maize hybrids”
Claim · model-written summary
High GCV and PCV occurred for ear placement height, kernels per cob, and cob yield per plot.
- Outcome
- GCV and PCV valuese0
- Direction
- Highe0
- Qualifier
- ear placement height (cm), number of kernels per cob, cob yield per plot (kg)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“High GCV and PCV values were obtained for kernel yield per plant (kg), kernel yield (kg ha-1), plant height (cm), ear placement height (cm), number of kernels per cob, cob yield per plot (kg) and test weight (g).”
e1“in 13 different new maize hybrids”
Claim · model-written summary
High GCV and PCV occurred for test weight.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“High GCV and PCV values were obtained for kernel yield per plant (kg), kernel yield (kg ha-1), plant height (cm), ear placement height (cm), number of kernels per cob, cob yield per plot (kg) and test weight (g).”
e1“in 13 different new maize hybrids”
Claim · model-written summary
High heritability with genetic advance was recorded for plant height, ear placement height, and days to 50% pollen shed.
- Outcome
- heritability estimates coupled with genetic advance as percentage of meane0
- Direction
- Highe0
- Qualifier
- plant height, ear placement height, days to 50% pollen shede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“High heritability estimates coupled with genetic advance as percentage of mean was recorded for plant height, ear placement height, days to 50% pollen shed and test weight.”
e1“in 13 different new maize hybrids”
Claim · model-written summary
High heritability with genetic advance was recorded for test weight.
- Outcome
- heritability estimates coupled with genetic advance as percentage of meane0
- Direction
- Highe0
- Qualifier
- test weighte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“High heritability estimates coupled with genetic advance as percentage of mean was recorded for plant height, ear placement height, days to 50% pollen shed and test weight.”
e1“in 13 different new maize hybrids”
Claim · model-written summary
Kernel yield per plot showed the highest significant positive association with kernel yield per hectare.
Not reportedOrgan / stage
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Highest significant positive association with kernel yield (kg ha-1) and the trait kernel yield per plot also showed highest positive direct effects”
e1“in 13 different new maize hybrids”
Claim · model-written summary
Kernel yield per plot had the highest positive direct effect on kernel yield.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the trait kernel yield per plot also showed highest positive direct effects indicating that these traits are more effective and these traits directly and or indirectly will contribute for achieving higher kernel yields”
e1“in 13 different new maize hybrids”
Claim · model-written summary
The authors recommend selection based on the identified traits for maize hybrid breeding.
- Outcome
- selection based on these traitse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“selection based on these traits would be more effective in hybrid maize breeding programmes”