Stoma of polyploids ( include hexaploid and octoploid ) were larger and spaced father apart on the undersurface than diploids , the stoma density of triploids and tetraploids were 60 - 70 % of corresponding diploids , and the stoma density of hexaploids and octoploids were 30 - 40 % of diploids 73为三倍体和四倍体区别于二倍体共有的特征带； itrai 70为四倍体的特征带。 sod同工酶酶活性较弱，共分离6条带， ro
