杂种优势的表现是一系列内部代谢过程进行的总结。每一代谢过程又为特定的酶体系所催化,因此杂种优势产生的原因与酶的变化可能有关。 许多资料指出:具有优势的杂种常出现新的为双亲所不具备的同工酶酶带(杂种酶带)或双亲互补的酶带。早在六十年代初,Schwartz首先发现,当两个酯酶迁移率不同的玉米自交系杂交后,有优势的杂种一代除出现双亲的酶带外,还出现一种新的杂种酶带。在蕃茄杂交一代强优势组合种子中,发现具有酯酶的杂种酶带和双亲的互补酶带。蒙义文在杂交水稻叶片过氧化 The performance of heterosis is a summary of a series of internal metabolic processes. Each metabolic process is catalyzed by a specific enzyme system, so the reason for heterosis may be related to the change of enzyme. Many sources point out that the dominant heterosis often shows new isozyme bands (hybrid enzyme bands) or parents’ complementary enzyme bands that parents do not have. As early as the early 1960s, Schwartz first discovered that when two crosses of maize inbred lines with different esterase rates hybridized, the dominant hybrids appeared in addition to the bands of their parents, and a new hybrid band appeared. In tomato hybrid cross generation strong combination of superior seed, we found esterase with the hybrid enzyme bands and parents of the complementary bands. Meng Yiwen in hybrid rice leaves peroxidation