摘要
以穗发芽敏感品种AT 2 6 5为试材 ,对筛选出的YSR纯天然小麦穗发芽抑制剂进行了田间喷施 ;用 3,5 -二硝基水杨酸比色法 ,测定了YSR不同浓度处理的种子萌发期间的α -淀粉酶活性。结果表明 ,收获前 2d喷施YSR抑制剂效果最佳 ,穗发芽抑制率可达 75 9%,对AT 2 6 5的种用价值无显著性影响 ,可作种用。用不同浓度的YSR处理通过休眠的小麦种子 ,随着浓度的增加 ,α -淀粉酶活性迅速下降 ,直至完全失去活性。YSR通过降低α -淀粉酶活性来达到抑制穗发芽的目的。
Using sprouting sensitivevariety, AT265, the field prevention and cure experiment was undertaken with the natural sprouting depressor -YSR, obtained by the authors. Using colorimetric determination of 3,5-dinitro-salicylic acid,α-amylase was tested for the seeds treated with different concentration YSR during germination. The results were as follows: the best prevention and cure time of YSR was 2d before harvesting, inhibiting rate was 75.9%, and YSR had no side effect to seed using value.α-amylase content fallen rapidly with increasing of YSR concentration. This proved that YSR could inhibit sprouting through lowering α-amylase during germination in wheat gains.
出处
《中国农学通报》
CSCD
2003年第4期57-59,共3页
Chinese Agricultural Science Bulletin
基金
河北职业技术师范学院青年基金项目
