The plant was diploid when the number of chloroplast in stomata guard cell was less than 16, otherwise it was polyploid, and the rates to identify diploid and polyploid cultivars were 92.8% and 94.2%.

• 以16为界来判定倍性，叶绿体数少于16的为二倍体，大于或等于16的为多倍体，对二倍体和多倍体判定的准确率分别达92.；8%25和94