Cleistogenes squarrosa population is one of the 3 populations of maximum abundance under all stocking rates from 1989 to 1997.

The genetic effects of Aegilops squarrosa L. cytoplasm were studied by transferring Aegilops squarrosa L. cytoplasm into wheat.

But plant leaf and stem had environmental plasticity to some extant. plasticity of Artemisia frigida and Cleistogenes squarrosa were high;