英语语法分析

The POD isoenzyme of the different organs of the same cultispecies were remarkable difference.

同一栽培种不同器官酶带数和酶活性，在同工酶类型上存在较大的变化；

A analysis was made for the esterase isozyme zymogram of the main cultispecies of 12 black rices in our country.

对我国12种黑稻主要栽培种进行了酯酶同工酶谱分析。