Resistance to Major Insect Pests and Diseases

For large scale adoption of hybrid rice technology the released hybrids should possess a fair degree of resistance to some of the major diseases/pests in the target areas, in addition to the distinct yield advantage over the existing varieties. Keeping this in view, the promising hybrids are regularly being evaluated for resistance to major pests and diseases, both in glass house as well as under field conditions.
Promising hybrids and some parental lines with resistance to major pests and diseases have been identified (Table 6).
Table – 6 : Hybrids resistant to different pests and diseases

Pests

BPH KRH-2*, PHB 71, PA 6201, MGR-1, IR 58025A/IR 29723,
IR 58025A/IR 21567
WBPH 2RI 158, MTUHR 2037, MGR 1, HRI-126, IR 58025A/IR 29723
Gall midge MGR-1, IR 58025A/IR 54742, IR 58025A/IR 34686

Diseases

Blast

2RI 158, KRH-2, DRRH-1, PA 6201, HKRH-1005, NDRH-2,
IR 58025A/IR 29723, IR 58025A/IR 21567
RTV HKRH-1005, HKRH-1008, MTUHR-2036, MTUHR-2037
Sheath rot

2RI 158, NDRH-2, IR 58025A/IR 21567, IR 58025A/IR 29723,
IR 58025A/IR 34686
False smut IR 58025A/IR 21567, IR 58025A/IR 34686
Sheath blight HRI 126

*Released hybrids are given in bold font