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代异株性状也有较大，现为生育期显著缩短，结实有所提高，株型向松散趋势，型则均现为棍棒形，株高、粒数和千粒重的品种间现不一致。