Exploring genetic variability and association in QPM maize (Zea mays) inbred lines

DOI: 10.37992/2023.1403.127

  • Anvesh Ellandula, Ajay kumar,
  • Satish kumar Singh, Asish Narayan,
  • Uttej Karla and U. S. Sree Vathsa Sagar

Abstract

Variability and association studies help to assess the variation among the genotypes and interactions between grain yield and its component traits for enhancing the usefulness of selection. In view of this, the present experiment was conducted at Maize research farm TCA, Dholi, DRPCAU, Pusa, Samastipur, Bihar using 25 inbred lines of maize for various traits to determine the extent of variability and association between these lines for different characteristics. Traits including plant height, ear height, ear length, ear girth, number of kernels per row, harvest index, tryptophan content and lysine content, exhibited high heritability and genetic advance as percentage of the mean. Grain yield showed significant positive associations with ear length, ear girth, number of kernel rows per ear, number of kernels per row and harvest index while it exhibited negative association with plant height, ear height, days to 75% brown husk, protein, lysine, and tryptophan content. Furthermore, certain traits, such as ear length, ear girth, number of kernel rows per ear, number of kernels per row, harvest index, days to 50% silking, and ear height, had a direct positive effect on grain yield. Therefore, selecting these traits directly would be desirable for future hybridization endeavors.

Keywords: Association, QPM maize, Direct & indirect effects, PCV, GCV

Published
03-10-2023
How to Cite
Anvesh Ellandula, Ajay kumar, Satish kumar Singh, Asish Narayan, Uttej Karla and U. S. Sree Vathsa Sagar

Exploring genetic variability and association in QPM maize Zea mays inbred lines

. 2023. Electronic Journal of Plant Breeding, 14 3, 1222-1229. Retrieved from https://ejplantbreeding.org/index.php/EJPB/article/view/4870
Issue
Vol 14 No 3 (2023): EJPB
Section
AGSC 2023

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.