The proportions of their distribution on both the outer and inner surfaces of the hull,on the inner surface of the hull only, in the pericarp and testa and in the endosperm (or embryo) were found to be approximately as follows; 36 : 13 : 9 : 1.

• 谷壳、谷壳内表面、籽实皮、胚乳(或胚)的带菌量之比为36:13:9:1。