The characters of SP1 variation plants at maturity stage also appeared big changes.SP1 variation plants had short growing period, high seed setting rate, loose plant-type and clavated spike-type.
成熟期SP1代变异性状也有较大变化,表现为生育期短,结实有所提,向松散趋势发展,穗则均表现为棍棒形,、穗粒数和千粒重的变化品种间表现不一致。