Heterosis and combining ability for tuber dry matter and yield in potato (Solanum tuberosum L.) over two clonal generations under short-day subtropic conditions
Keywords: Potato, clonal generations, dry matter, yield, combining ability, heterosis
AbstractThe potato processing industry requires cultivars with high tuber dry matter and acceptable colour of processed products.
Hence an attempt was made to find out the extent of heterosis, type and nature of gene action and the suitable parents for
tuber dry matter, yield, tuber number and average tuber weight. Fourteen parents and their 40 progenies from factorial (10 ×
4) mating design were evaluated for two clonal generations. Data were recorded and subjected to heterosis and combining
ability analyses. In general, progenies were better than mid parent value for number of tubers, lower for average tuber weight
and as good as for yield and dry matter. Mean squares due to various sources including interactions with generations were
significant for all the characters. Both additive and non-additive gene actions were equally important for various characters.
Specific combining ability effects of crosses were related to general combining ability effects of the parents involved. Use of
at least one parent with good general combining ability resulted in high-performing heterotic progenies for various
characters. Superior parents and hybrids for yield and dry matter were also identified.
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.