Identification of germplasm lines for diversification of dual-purpose sorghums
Characterization and evaluation of germplasm is a pre-requisite for diversifying the genetic base in breeding populations. Preliminary evaluation of 642 germplasm lines for 25 traits at MPUAT, Udaipur during 2014 rainy season led to the identification of promising germplasm lines for each of the traits. Looking into the climatic pattern of the region, early flowering, dual-purpose lines with terminal drought tolerance are preferred. The germplasm lines IC 484464, IC 484889 and IC 240866 were found promising. The principal components analysis clearly showed that the entire variation in the 642 sorghum germplasm lines cannot be explained on the basis of few characters though glume covering, plant height and the number of leaves explained the variation in PC I explaining 19.5% of the total variability. Trait association showed that the yield enhancement in Udaipur location representing zone III, can be brought about by breeding for early flowering, terminal drought tolerance (non-senescence), bold grain, medium height, and tan plant colour background, apart from other significantly associated traits.
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.