| 摘要: |
| 用 BR 处理水稻(Oryza sativa L.)种子,提高了萌发种子的淀粉酶活性。10-3ppmBR 处理对根和芽长度稍有促进效果,10-1ppmBR 则略有抑制作用。发现了初生根卷须状弯曲现象,该现象对 BR 的生物活性的定性鉴定可能具有一定的意义。种子经 BR 处理后,幼苗在不同生长条件下株高和鲜重受影响的情况不同。BR 处理提高叶片组织的耐冷性。 |
| 关键词: 油菜素内酯 水稻 种子淀粉酶活性 初生根卷须状弯曲现象 |
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| EFFECTS OF BRASSlNOLIDE(BR)ON SEED GERMINATION AND SEEDLING GROWTH OF RICE |
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| Abstract: |
| Amylase activities in germinating rice seeds were promoted with BR-trea- tment.10~(-3)ppm BR-treatment increased root length and shoot length in a slight degree,but 10~(-1)ppm BR-treatment inhibited them slightly.We found the tendril- like curve phenomenon in a primary root.This phenomenon can probably be used to identify the bioactivity of BR qualitatively.With BR-treatment the plant height and fresh weight of rice seedlings grown in different conditions were affected differently.BR-treatment enhanced cold... |
| Key words: brassinolide rice seed amylase activities primary root tendril-like curve phenomenon |
