Possible Detection of the Rice Gall Midge (Orseolia oryzae) Resistance Genes in Rice Genotypes Using Relevant Markers

 

Manasa N1, Kousik MBVN2, Rekha G2, Abdul R Fiyaz2, Gopala Krishna M1, Karthikeyan K3, Painkra KL4, Atanu Seni5, Nemi Mandawi6, Swathi Y7, Shravan Kumar R8, Anand Kumar ADVSLP9, Sujay Hurali10, Bentur JS1*and Padmakumari AP2*

1  Agri Biotech Foundation, Rajendranagar, Hyderabad 500030, Telangana

2  ICAR-Indian Institute of Rice Research, Rajendranagar, Hyderabad 500030, Telangana

3  Regional Agricultural Research Station, Pattambi, Kerala 679 306

4  Raj Mohini Devi College of Agriculture and Research Station, Ambikapur, Chattishgarh

5  AICRIP, RRTTS, Odisha 768 025

6  Shaheed Gundathur College of Agrculture and Research Station. Jagdalpur, Chattisgarh 494001

7  RARS, Polasa, Jagtial, Karimnagar, Telangana

8  Regional Agricultural Research Station, Warangal, Telangana-506 007

9  Regional Agricultural Research Station, Maruteru, West Godavari, Andhra Pradesh 534 122

10  Research Station, Gangavathi, Karnataka 583 227

*Corresponding author Email: jbentur@gmail.com; padmakumariento@gmail.com

Volume 18-(1), 2025   ;  https://doi.org/10.58297/ZIIB5822   Click here for Pdf

Received: 20th February, 2025, Accepted : 19th April, 2025
 
Abstract

The Asian rice gall midge (Orseolia oryzae) poses a significant threat to rice (Oryza sativa L.) cultivation, causing substantial yield losses of 0.8 % of the total production, amounting to US $ 80 million annually. Use of resistant rice varieties offers an effective strategy for managing this pest, particularly through the incorporation of multiple resistance genes. This study utilized functional (gm3, Gm4, Gm8) or linked molecular markers (Gm1, Gm2, Gm11, and gm12) to identify resistance alleles associated with gall midge resistance genes in a collection of rice genotypes. The results revealed the presence of multiple resistance alleles in various combinations in several genotypes, like PTB 20, RP 6290-22, RP 6749-7-19, RP 6810-20 and Karma Mahsuri. However, it appears that presence of multiple alleles may not always confer absolute resistance to this pest as evident from the performance of these lines in multilocation evaluation trials. This would ensure better deployment of resistant genes ensuring location specific gall midge management.

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