生化相克物质对小麦、水稻幼苗中淀粉酶、过氧化物酶、过氧化氢酶及其同工酶的影响

本文研究了经腐烂的小麦残株及土壤提取液(内含酚类物质)处理后的小麦、水稻幼苗中淀粉酶、过氧化物酶、过氧化氢酶的活性及其同工酶的变化。结果表明:经处理后的幼苗中,过氧化物酶的活性显著高于对照,而过氧化氢酶的活性变化呈相反的趋势,淀粉酶的活性严重的受抑制。同工酶的酶带着色时间、染色深浅及数目、宽窄与对照相比发生十分明显的变化。此变化与生化相克物质对种子萌发、幼苗生长的抑制有密切的联系。

EFFECTS OF ALLELOCHEMICALS ON AMYLASE, PEROXIDASE AND THEIR ISOENZYMES FROM WHEAT AND RICE SEEDLINGS

This paper deals with the effects of allelochemicals extracted from decomposed wheat residue and soic around on amylase, peroxidase and catalase as well as their isoenzymes of wheat and rice seedlings. It was found that the activity of amylase and catalase of treated seedlings was remarkably depressed while that of peroxidase was strikingly stimulated, and that the changes also took place in amylase and peroxidase isozyme electrophoresis zymogramscomparaed with the controll. All that suggests some possible ways by which allelochemicals inhibit the seed germination and seedling gowth of whect and rice.