杂种优势是生物界普遍存在的现象,并在许多作物中广泛利用,成为农业生产上提高产量和改进品质的重要措施之一。最近,随着生物科学技术的发展,许多学者从遗传、生理生化和分子生物学等方面来研究杂种优势的形成机制及早期预测方法。由于同工酶是基因转录和翻译的直接产物,因此,许多研究者用同工酶作为一种工具,对作物杂种优势进行了大量的研究。不少研究表明,植物体内某些 Heterosis is a ubiquitous phenomenon in the world of biology and has been widely used in many crops and has become one of the important measures to increase production and improve quality in agricultural production. Recently, with the development of biological science and technology, many scholars have studied the formation mechanism and early prediction methods of heterosis from the aspects of genetics, physiology, biochemistry and molecular biology. Because isoenzymes are the direct product of gene transcription and translation, many researchers have used isozymes as a tool to study crop heterosis. Many studies have shown that certain plants in the body