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代异株性状有大化,表现为生育期显著缩短,结实率有所提高,株型向散趋势发展,穗型则均表现为棍棒形,株高、穗粒数和千粒化品种间表现不一致。