Abstract
Abstract: Heterosis and the nature and combining ability was studied in 7 × 7 diallel cross in maize for grain yield and yield contributing characters. The significant estimates of GCA and SCA variances suggested the importance of both additive and non-additive gene actions for the expression studied traits. Preponnderance of additive gene action was noticed for ear diameter and 1000-kernel weight and the other characters were preponderantly controlled by non-additive type of gene action. Standard heterosis ranged from-17.60 to 9.71%;-20.41 to 8.04%;-13.89 to 7.54 % and-6.17 to 14.48 % for yield per plant, number of kernels per ear, length of ear, ear diameter and 1000-kernel weight, respectively. Kernel weight showed maximum heterotic contribution to high yield. The parent Q 7 was the best general combiner showing significant positive GCA effect for grain yield and all the yield components and also simultaneously possessed high mean values indicating that per se performance of the parent could prove as an useful index for combining ability. Parents Q 1, Q4 and Q 5 were found suitable for higher number of kernels and Q1 and Q 7 were desirable for bold kernels. The cross combinations those exhibited significant sca effects for yield involved average × average and average × high
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 10
Claim · model-written summary
Significant GCA and SCA variances indicated additive and non-additive gene action for the studied traits.
- Outcome
- GCA and SCA variancese0
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The significant estimates of GCA and SCA variances suggested the importance of both additive and non-additive gene actions for the expression studied traits.”
t0“Maize”
Claim · model-written summary
Additive gene action predominated for ear diameter and 1000-kernel weight.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Preponnderance of additive gene action was noticed for ear diameter and 1000-kernel weight”
t0“Maize”
Claim · model-written summary
Non-additive gene action predominated for the other traits.
- Outcome
- non-additive type of gene actione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the other characters were preponderantly controlled by non-additive type of gene action”
t0“Maize”
Claim · model-written summary
Standard heterosis for yield per plant ranged from -17.60 to 9.71%.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Standard heterosis ranged from-17.60 to 9.71%”
t0“Yield and Component Characters in Maize”
Claim · model-written summary
Kernel weight made the maximum heterotic contribution to high yield.
Not reportedMaterial
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Kernel weight showed maximum heterotic contribution to high yield.”
t0“Maize”
Claim · model-written summary
Q 7 was the best general combiner, with positive GCA effects for grain yield and yield components.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The parent Q 7 was the best general combiner showing significant positive GCA effect for grain yield and all the yield components”
t0“Maize”
Claim · model-written summary
Q 7 had high mean values.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“also simultaneously possessed high mean values”
e1“The parent Q 7 was the best general combiner showing significant positive GCA effect for grain yield and all the yield components”
t0“Maize”
Claim · model-written summary
Q 1, Q4 and Q 5 were suitable parents for higher kernel numbers.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Parents Q 1, Q4 and Q 5 were found suitable for higher number of kernels”
t0“Maize”
Claim · model-written summary
Q1 and Q 7 were desirable parents for bold kernels.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Q1 and Q 7 were desirable for bold kernels”
t0“Maize”
Claim · model-written summary
Yield crosses with significant SCA effects involved average-by-average or average-by-high parents.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The cross combinations those exhibited significant sca effects for yield involved average × average and average × high”
t0“Maize”