MicroRNAs (miRNAs) are about 22 nucleotides regulatory non-coding RNAs that play versatileroles in reprogramming plant responses to biotic and abiotic stresses.
The quantitative resistance gene pi21 from Sensho was introgressed to an indica breeding line IR63307-4B-13-2, a pyramiding line IRBB4/5/13/21, and a tropical j