Genetics of grain yield and its component traits in drought tolerance rice


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Authors

  • Pandurang B Arsode Institute of Agricultural Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh, India
  • Ravi P Singh Institute of Agricultural Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh, India
  • SK Singh Institute of Agricultural Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh, India
  • Manish Kumar Institute of Agricultural Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh, India
  • Namrata Institute of Agricultural Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh, India
  • Madhu Choudhary Institute of Agricultural Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh, India
  • Debarchana Jena ICAR-National Rice Research Institute, Cuttack, Odisha, India
  • Vineeta Singh ICAR-National Rice Research Institute, Cuttack, Odisha, India
  • Diptibala Rout ICAR-National Rice Research Institute, Cuttack, Odisha, India
  • Biswajit Sahoo ICAR-National Rice Research Institute, Cuttack, Odisha, India
  • Kalpatru Nanda ICAR-National Rice Research Institute, Cuttack, Odisha, India
  • Prakash Singh Veer Kunwar Singh College of Agriculture (BAU, Sabaur), Dumraon, Buxar, Bihar, India
  • Chander Mohan Department of Agriculture, Cooperation and Farmers Welfare, Government of India, New Delhi, India
  • Ramlakhan Verma ICAR-National Rice Research Institute, Cuttack, Odisha, India
  • Vijai Pal Bhadana ICAR-Indian Institute of Agricultural Biotechnology, Ranchi, Jharkhand, India

Keywords:

Drought tolerance, gene action, components of variance

Abstract

The facts pertaining to the inheritance of basic and value addition traits are prerequisite in designing much suited breeding strategies to harness substantial genetic gain in crop plants. The present study was aimed at comprehensive scrutiny of the quantitative traits, responding drought tolerance in rice through generation mean analysis (GMA). We have evaluated six generations ( P1, P2, F1, F2, B1 and B2) of cross, HUR-917 × DRR Dhan-42. The results revealed that all scales, A, B, C and D were significant for yield and attributing traits under irrigated and drought conditions, reflecting the presence of epistasis. Major yield contributing traits like days to 50% flowering (DFF), days to maturity (DM), plant height (PH), panicle length (PL), flag leaf length (FLL), number of grains per panicle (NGPP) and test weight (TW) showed the presence of duplicate epistasis under both conditions. Whereas, traits like the number of earbearing tillers (NEBT) and grain yield per plant (GYPP) shown duplicate epistasis under drought. The results suggest the prevalence of additive gene effect and non-allelic interactions/epistasis effect on the genetic control of majority of the yield traits. Additive (d) effect and dominant × dominant (l) gene interaction was the only significant portion of gene controlling grain yield per plant in the rice. The positive additive gene effect indicates that HUR-917 contributes more to the trait than DRR Dhan-42 and vice versa.

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Submitted

2022-06-29

Published

2022-06-29

Issue

Vol. 59 No. 2 (2022): June-2022

Section

Articles

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Copyright (c) 2022 Association of Rice Research Workers

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This work is licensed under a Creative Commons Attribution 4.0 International License.

How to Cite

Arsode, P. B., Singh, R. P., Singh, S., Kumar, M., Namrata, Choudhary, M., Jena, D., Singh, V., Rout, D., Sahoo, B., Nanda, K., Singh, P., Mohan, C., Verma, R., & Bhadana, V. P. (2022). Genetics of grain yield and its component traits in drought tolerance rice. ORYZA-An International Journal of Rice, 59(2), 150-156. https://epubs.icar.org.in/index.php/OIJR/article/view/125276