CAJ | 학술논문

“穗芽”是我国发展杂交稻的技术难点之一，至今尚无有效控制措施。据研究外源ABA对杂交水稻制种F1种子穗芽抑制效应显著。实验结果表明，于齐穗后施用ABA抑制穗芽的作用有效浓度为75mg／L，施用剂量(有效成分a．i．)为0．38mg／hill；在本试验条件下，外源ABA对杂交稻制种F1种子、不育系繁种种子以及常规稻种子均有抑制穗芽的作用。此外，杂交水稻制种田为调花期与增穗使用外源GA3，抽穗期间雨日多寡等影响外源ABA抑制穗芽的效果。外源ABA处理过的种子经贮藏，未发现其种子活力下降。
“수아”시아국발전잡교도적기술난점지일，지금상무유효공제조시。거연구외원ABA대잡교수도제충F1충자수아억제효응현저。실험결과표명，우제수후시용ABA억제수아적작용유효농도위75mg／L，시용제량(유효성분a．i．)위0．38mg／hill；재본시험조건하，외원ABA대잡교도제충F1충자、불육계번충충자이급상규도충자균유억제수아적작용。차외，잡교수도제충전위조화기여증수사용외원GA3，추수기간우일다과등영향외원ABA억제수아적효과。외원ABA처리과적충자경저장，미발현기충자활력하강。
"Panicle sprouting" is one of the major problems in hybrid rice development, there is no an effective technique to solve the problem so far. It was demonstrated by our experiments that panicle sprouting could be effectively inhibited by timely application of exogenous ABA. The results showed that effective concentrations of ABA in this experiment is 75 ml/L and the dosage is 0.38 mg/hill. Exogenous ABA can inhibit panicle sprouting in hybrid rice F1 seed and conventional rice seed production in this experiment condition. These factors as GA3, precipitation during heading time in the seed production field will affect the ABA inhibiting efficiency. It was not found anything negative on F1 germination rate in ABA treatment after a period of storage.