摘要
ＭＧＢＧ（ｍｅｔｈｙｌｇｌｙｏｘａｌｂｉｓ（ｇｕａｎｙｌｈｙｄｒａｚｏｎｅ））处理短日可育、处于光敏感时期的农垦５８Ｓ，可显著降低花粉可育度和自交结实率，但并不影响其正常的生长。ＭＧＢＧ处理长日不育株时效果不明显。以１０－４ｍｏｌ·Ｌ－１处理短日可育株效果最佳。ＭＧＢＧ主要影响穗子中下部枝梗的结实，对上部结实影响较小。ＭＧＢＧ处理引起腐胺增加而使亚精胺和精胺减少，推测亚精胺和精胺的减少是育性下降的原因之一。
Treatments with methylglyoxal bis (guanylhydrazone)(MGBG) apparently decreased pollen fertility and bagged seed settings of Nongken 58S short day fertile rice plants, without affecting its normal growth. 10 -4 mol·L -1 MGBG was the optimum concentration for short day fertile rice plants, whereas MGBG in different concentrations did not function very well when spraying on long day sterile rice plants. The treatment mainly reduced the seed settings of the middle and bottom branches in short days and had little effect on those of the top branches. MGBG treatment resulted in an increase of putrescine content and a reduction of spermidine and spermine; the latter of which could be inferred as one of the causes of sterility.
基金
国家自然科学基金
关键词
多胺
脒腙
光敏核不育水稻
育性转换
水稻
Polyamines
Methylglyoxal bis(guanylhydrazone)
Photo sensitive genic male sterile rice
Fertility transformation
