Evaluation of recombinant inbred lines for low soil phosphorous tolerance derived from Rasi - a low soil phosphorous tolerant variety

DOI: 10.37992/2022.1303.102

  • A. Miriyala,
  • Archana Giri and R. M. Sundaram

Abstract

Rasi is a P efficient genotype identified by ICAR-IIRR, Hyderabad, lacking Pup1, the known major low soil P tolerance QTL-. In the present study, a set of 214 recombinant inbred lines (RILs) developed from cross Rasi x Improved Samba Mahsuri was  evaluated in a low soil P plot (available P < 2 kg ha-1) and normal soil P plot (available P >18 kg ha-1) at ICAR- IIRR along with known tolerant and the sensitive checks. The RILs showed high genetic variability for the traits associated with low soil P tolerance. Stress indices were calculated based on the yield and the RILs were grouped into highly tolerant, tolerant and sensitive lines. Thirty-six RILs performing better than the tolerant checks and exhibiting excellent tolerance to low P and a yield reduction of < 40%  were identified. These RILs can serve as donors for the new novel source for low soil P tolerance.

Keywords: Low phosphorous tolerance, Rasi, Improved Samba Mahsuri, Recombinant inbred lines, Stress indices.

Published
30-09-2022
How to Cite
Miriyala, A., & Sundaram, A. G. and. (2022). <p>Evaluation of recombinant inbred lines for low soil phosphorous tolerance derived from Rasi - a low soil phosphorous tolerant variety</p&gt;. Electronic Journal of Plant Breeding, 13(3), 800-809. Retrieved from https://ejplantbreeding.org/index.php/EJPB/article/view/4319
Section
Research Article