Department of Genetics, Haryana Agricultural University, Hissar, India.
Theor Appl Genet. 1979 Mar;54(2):89-91. doi: 10.1007/BF00265475.
A considerable amount of variation with respect to soluble proteins and esterase isoenzyme pattern was observed between different species of Brassica. Naturally occurring amphidiploids had comparable proteins and isoenzyme patterns to either one or both of the parental species. The species relationship based on percentage homology of protein and esterase bands revealed that B. nigra and B. campestris are the parental species of B. carinata and not B. nigra and B. oleracea, as suggested on the basis of cytological studies. Elimination of a pair of chromosomes might have resulted into 2n=34 in the case of B. carinata. Further studies are needed to confirm this view. The peroxidase and catalase isoenzyme patterns did not show much variation in different species and amphidiploids.
不同的芸薹属物种之间，可溶性蛋白质和酯酶同工酶模式存在相当大的差异。自然发生的双二倍体与父本物种之一或两者具有相似的蛋白质和同工酶模式。基于蛋白质和酯酶条带同源性百分比的物种关系表明，黑芥和白菜是甘蓝型油菜的亲本物种，而不是根据细胞学研究提出的黑芥和甘蓝。在甘蓝型油菜中，一对染色体的消除可能导致 2n=34。需要进一步的研究来证实这一观点。过氧化物酶和过氧化氢酶同工酶模式在不同物种和双二倍体中没有表现出很大的差异。
