Exploiting combining ability and maternal effects for genotypic selection of best hybrids in sweet corn and normal corn crosses
Twenty one sweet – normal corn crosses and twenty one normal – sweet corn crosses obtained by [3 × 7] sweet corn × normal corn and [7 × 3] normal corn × sweet corn crosses, respectively were scrutinized for the advantage of reciprocal cross effects in addition to the combining ability studies to screen superior hybrids for yield and quality related traits. Based on the mean reciprocal cross effect of common parental genotypes, NCL3 and NCT7 were identified as the best fit for seed and pollen parents for green cob weight, respectively. Potential heterotic combinations were discovered indirect and reciprocal crosses as well. Reciprocal cross effects were significant only for green cob weight, plant height and reducing sugars, however when screened at specific cross combinations levels, many crosses had appreciable hybrid vigour in reciprocal crosses. Thus maternal effect as an added approach for hybrid screening is advisable.
Key words: Maternal effect, specific combining ability, line × tester analysis, field corn, sweet corn
It is certified that:
- The corresponding author is fully responsible for any disputes arising due to the publication of his/her manuscript.
- The article has been seen by all the authors who are satisfied with its form and content.
- The sequence of names of authors in the by-line is as per their relative contribution to this experiment, giving due credit to all scientists who made notable contribution to it.
- All the authors fully understand that inclusion of any other co-authors or exclusion of any co-authors is not possible once the article has been submitted to the journal.
- The corresponding author takes full responsibility for this article.
- The address of the organization where the research was conducted is given.
- The article is exclusive for this journal, and the results reported here have not been sent (and will not be sent during its consideration by this journal) for publication in any other journal.
- Authors agree to abide by the objective comments of referees and do agree to modify the article into a short note as per the recommendation, for publication in the Electronic Journal of Plant Breeding.
- If published in Electronic Journal of Plant Breeding, the copyright of this article would vest with the Indian Society of Plant Breeders, who will have the right to enter into any agreement with any organization in India or abroad engaged in reprography, photocopying, storage and dissemination of information contained in it, and neither we nor our legal heirs will have any claims on royalty.