Introgression of rice blast resistance genes into elite cultivars and their performance in the multi-environment test

Authors

  • M. SRINIVAS PRASAD*, K. RATNA MADHAVI, R. RAMBABU, S.VIJAY KUMAR, J. ARUNA, V. ABHILASH KUMAR, M. SHESHU MADHAV and V. RAVINDRA BABU

Keywords:

Rice, Blast, Marker assisted backcross breeding, Resistance genes

Abstract

Rice is a staple food for more than half of the population. It suffers with the blast disease throughout the country in all the rice growing ecologies. The yield losses are more if the conditions are favorable for the disease development during the crop stage. Many fungicides are available for the management of the disease but they pollute the atmosphere. Hence, management of the disease through host plant resistance is more appropriate. In the present study, the blast resistance genes Pi-1, Pi-2 and Pi-54 were introgressed into the genetic background of elite cultivars Samba Mahsuri, Swarna and Improved Samba Mahsuri through marker assisted backcross breeding. The gene specific markers viz., RM224, RM527, 1MSM, AP5659-5, RM206 and Pi-54MAS were used for the targeted resistance genes viz.,Pi-1, Pi-2 and Pi-54. The NIL lines with different gene combinations (one or two or three genes) were developed different backgrounds. These NILs were evaluated in the multi-environment test under AICRIP against major rice diseases and identified a few as multiple disease resistance lines across the locations. The results on agronomic performance and grain quality revealed that majority of the introgressed lines were superior to their recurrent parents Samba Mahsuri, Swarna and Improved Samba Mahsuri with plant type and grain characters.

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Issue

Vol. 69 No. 4s (2016): Indian Phytopathology : Special Issue

Section

Research Articles

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How to Cite

V. ABHILASH KUMAR, M. SHESHU MADHAV and V. RAVINDRA BABU, M. S. P. K. R. M. R. R. S. K. J. A. (2016). Introgression of rice blast resistance genes into elite cultivars and their performance in the multi-environment test. Indian Phytopathology, 69(4s), 718-720. http://epubs.icar.org.in/ejournal/index.php/IPPJ/article/view/71432