Clonal selection technique is not useful for

The full form of $IRRI$ is ...........

Arrange the following steps in the correct sequence for breeding a genetically diverse crop variety:
$I -$ Cross-hybridization among the selected parents
$II -$ Testing, release, and commercialization of new cultivars
$III -$ Selection and testing of superior recombinants
$IV -$ Collection of variability
$V -$ Evaluation and selection of parents

Mating between two individuals differing in genotype to produce genetic variation is called

Which widely grown variety of rice,developed by the International Rice Research Institute $(IRRI)$ in Manila,Philippines,helped solve the food crisis in Asia?

Heterosis requires