Studies on Line×Tester Analysis in Sesame (Sesamum indicum L.)

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Authors

  • T. Amarnath Dept. of Genetics and Plant Breeding, Faculty of Agriculture, Annamalai University, Annamalai Nagar, Tamil Nadu (608 002), India
  • S. Ranjith Raja Ram Dept. of Genetics and Plant Breeding, Faculty of Agriculture, Annamalai University, Annamalai Nagar, Tamil Nadu (608 002), India
  • J. Gogulakrishnan Dept. of Genetics and Plant Breeding, Faculty of Agriculture, Annamalai University, Annamalai Nagar, Tamil Nadu (608 002), India
  • R. Narayanan Dept. of Genetics and Plant Breeding, Faculty of Agriculture, Annamalai University, Annamalai Nagar, Tamil Nadu (608 002), India

Keywords:

Sesame, line×tester, SCA, GCA, hybrids, yield

Abstract

The present investigation was carried out in sesame involving 7 lines and 3 testers to identify the nature of gene action, combining ability and heterosis in association with yield and its component traits in sesame during December 2017 –March 2019. The parents were mated in the Line×Tester method. The variance due to SCA was higher than the corresponding variance due to GCA for all the characters indicating the preponderance of non-additive gene action. Among the lines ACM 14- 007 SI-2 and GT 10 and among the tester TMV 7 and TMV 5 exhibited high and significant per se performance for seed yield and its component traits. The gca effects of the lines indicated that the line GT 10 was positive and maximum significant for the yield attributing characters. The hybrids ACM 14-007 SI-2×TMV 5 and GT 10×TMV 7 recorded high per se performance with significant sca effects for seed yield per plant its component traits. Based on standard heterosis, the cross combinations GT 10×TMV 7, ACM 14-007 SI-2×TMV 5 and GT 10×TMV 5 possessed significant high standard heterosis for seed yield per plant and its associated traits. The hybrids GT 10× TMV 7,  ACM 14-007 SI-2×TMV 5 and GT 10×TMV 5 were rated as the best since it possessed desirable performance based on per sesca effects and standard heterosis for most of the yield attributing characters and so these hybrids could be exploited for further crop improvement.

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Published

2019-10-01

How to Cite

1.
Amarnath T, Ram SRR, Gogulakrishnan J, Narayanan R. Studies on Line×Tester Analysis in Sesame (Sesamum indicum L.). IJBSM [Internet]. 2019 Oct. 1 [cited 2024 Feb. 21];10(Oct, 5):456-60. Available from: https://ojs.pphouse.org/index.php/IJBSM/article/view/3865

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