摘要
抑制剂Ａ与Ｂ分别设４种浓度，对水稻进行了浸种发芽试验。结果表明，抑制剂Ａ能使种子萌动，但不能生长；抑制剂Ｂ能抑制种子完全不萌动。但一旦去抑制以后，则不能再抑制种子的生长。用３．５－二硝基水扬酸法测定酶活性表明，抑制剂Ａ的淀粉酶活性变化与对照相似，α－淀粉酶与β－淀粉酶比对照略低；抑制剂Ｂ的淀粉酶活性变化与对照差异显著，处理种子淀粉酶活性１０天中均处于极低水平。抑制剂Ａ以抑制剂种子萌发中后续酶合成为主，从而抑制生长；抑制剂Ｂ以抑制种子内存酶激活为主。
The seeds of the above-stated rice genotypes were pre-soaked and germinated in inhibitors A and B at four concentrations. The results showed that inhibitor A did not inhibit the seeds from germinating but the germinated seeds could not grow; and inhibitor B effectively inhibited the seeds from germinating, but it could not inhibit their growth after the inhibiting period was over. The curves for the dynamics of amylase activity determined by the DNS method showed that amylase activity of inhibitor A was similar to that of the control and α-amylase was slightly lower than β-amylase; amylase activity of inhibitor B was significantly different from the control; and seed amylase activity remained very low for 10 days. It is concluded that inhibitor A mainly ingibits enzyme synthesis during germination while inhibitor B inhibits the activation of the inactivated enzymes perviously stored in the seeds.
出处
《西南农业大学学报（自然科学版）》
CSCD
1999年第2期149-153,共5页
Journal of Southwest Agricultural University
