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株性状也有较大化,表现为生育期显著缩短,结实率有所提高,株向松散趋势发展,穗则表现为棍棒形,株高、穗粒数和千粒重的化品种间表现不一致。