论文部分内容阅读
本文以水稻4个杂交组合一代及其相应的亲本为材料,观察了杂交一代及其亲本的硝酸还原酶活力之间的关系。结果表明,杂交一代硝酸还原酶活力高低与其亲本硝酸还原酶活力高低有密切相关。即,亲本酶活力低与高或中与高的杂交一代酶活力同高亲,而中与中或低与中的杂交一代酶活力高于双亲,表现一定的杂种优势。
In this paper, the four cross combinations of rice and their corresponding parents were used as materials to observe the relationship between the nitrate reductase activity of hybrids and their parents. The results showed that there was a close correlation between the level of nitrate reductase activity of hybrid generation and the level of nitrate reductase activity of its parent. That is, the parent enzyme activity is low and high or medium and high in the hybrid generation of the same high-affinity enzyme activity, and in the middle or low and in the hybrid generation of enzyme activity than the parents, showing some heterosis.