杂交稻种子贮藏技术及寿命预测研究

STUDY ON SEED STORAGE TECHNIQUE AND LONGEVITY IN HYBRID RICE

摘要: 对水稻三系配套的雄性不育系、保持系、恢复系乃其杂交一代种子,在各种恒定的含水量和室温下贮存,测定其寿命变比。发现不育系和杂交一代种子的安全水分比保持系和恢复系的13％(国家标准对普通籼稻常规品种的最高限度)低2％;不育系和杂种一代种子水分在11％时、寿命变化最接近典型的反S形生存曲线,当发芽率降到80％左右时,生存曲线急速下降。根据典型生存曲线规律,拟配合新的寿命预测方程。
- 杂交稻 /
- 种子寿命 /
- 贮藏 /
- 预测 /
- 水稻
Abstract: Studies on the longevity of the seeds of three rice lines and their F1 hybrids with different moisture contents were conducted. This study found that: the safe moisture contents of male sterile lines and F1hybrids had decreased by 2% as compared with 13% for the maintainer lines and restorer lines, which is the upper limit of national standard moisture content for conventional rice varieties; The seed moisture content of the male sterile line and F1 hybrids is just about 11%, and the variation in longevity tends to show a typical contra-S - shaped survival curve. As the sprouting rate decreased to 80% the survival curve descended rapidly. According to the rules of the typical survival curve, we can set up several new equations to predict seed longvity.
- Three-line rice /
- Seed longevity /
- Safe moisture content