Technology developed
AD (Bio) 09518– A new short duration bacterial blight resistance rice culture developed through MAS
Short duration varieties are grown in around two lakhs ha both in Kar/Kuruvai and Summer season in Tamil Nadu. ADT 43, ADT (R) 45 ASD 16 and CO 51 are predominant grown by farmers for their high yield and grain quality. None of these varieties are resistant to bacterial blight, which is a major disease in rice growing areas.
AD (Bio) 09518 (ADT 43 x IRBB60) with the yield potential of 5965 kg/ha, short duration and high resistance to bacterial blight has been developed through marker-assisted pedigree breeding. Under artificial screening in green house condition both at TNAU, Coimbatore and Indian Institute of Rice Research, Hyderabad, it shows high resistance to bacterial blight. Out of the 12 pathogenic races tested, the culture is resistant to almost all (11) races of the BB pathogen. The culture also showed moderate resistance to blast, sheath rot and leaf folder. It has medium slender grains with high head rice recovery. The culture, AD (Bio) 09518 has amylose content of 25.48 per cent, soft gel consistency and good volume expansion.
AD (Bio) 09518 with high yield, highly resistant to all the available races of bacterial blight pathogen, good cooking quality in comparison to their parents and check is proposed for release as a first variety developed through MAS. Hence, the culture AD (Bio) 09518 may be considered for release as Rice ADT 53 for cultivation during Kar/Kuruvai and summer seasons in Tamil Nadu.