objectives in hybrid rice breeding in order to satisfy
the increasing market needs and consumption standards
in recent years (Cheng and Li 2007). Breeders
and producers start to pay more attention to the
composite performance of rice hybrids and varieties
in terms of high productivity, good quality, and high
efficiency. Meanwhile, the breeding strategies place
more emphases on specific improvements of parents
using modern molecular methods in addition to the
conventional methods that mainly depend on combination
of parental genotypes.