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中国农学通报

中国农学通报 ›› 2014, Vol. 30 ›› Issue (36): 11-15.doi: 10.11924/j.issn.1000-6850.2014-1736

所属专题： 生物技术； 水稻

• 农学 农业基础科学 • 上一篇    下一篇

基质引发对粳稻种子发芽及幼苗抗寒性的生理效应

郝瑜琪,康 丹,刘远明,王 洋   

  1. (黑龙江大学农业资源与环境学院,哈尔滨 150080）
  • 收稿日期:2014-06-20 修回日期:2014-10-31 接受日期:2014-09-16 出版日期:2015-03-20 发布日期:2015-03-20
  • 通讯作者: 王洋
  • 基金资助:
    黑龙江省自然基金项目“利用连锁不平衡发掘粳稻种质资源耐冷性优异等位变异及载体材料”(C201009)；黑龙江省教育厅科学技术研究项目“水稻苗期耐冷性与SSR标记的关联分析及优异等位变异的发掘”(11551373)。

Effects of Sand Priming on Germination and Cold Resistance of Seedling of Japonica Rice (Oryza sativa L.)

Hao Yuqi, Kang Dan, Liu Yuanming, Wang Yang   

  1. (Department of Agricultural Resource and Environment, Heilongjiang University, Harbin 150080)
  • Received:2014-06-20 Revised:2014-10-31 Accepted:2014-09-16 Online:2015-03-20 Published:2015-03-20

摘要： 研究基质引发对粳稻种子发芽期和幼苗期抗寒能力的影响，采用沙作为引发剂，以南方粳稻品种‘南农粳3786’和北方粳稻品种‘空育131’为试验材料，设置2℃萌发环境和14℃幼苗生长环境模拟冷胁迫，研究沙引发种子与未引发种子冷胁迫后幼苗抗寒性变化。结果表明，沙引发不同程度地提高了冷胁迫后粳稻幼苗中脯氨酸、可溶性糖的含量，降低了丙二醛的含量；提高了发芽率和成苗率，减少幼苗根系电解质的外渗，促进叶绿素的合成；提高了SOD、POD的酶活性。沙引发能够提高粳稻种子生长早期的抗寒性。

关键词: 容器规格, 容器规格

Abstract: The objective of the present study is to investigate effects of sand priming on cold tolerance of japonica rice at germination and seedling stage. Effect of sand priming on anti-cold was investigated using south japonica rice (‘Nannongjing3786’) and north japonica rice (‘Kongyu131’). The seedling of cold resistance and physiological change were researched at 2℃germination stage and at 14℃ seedling stage. The results showed that, the percentage of germination, seedling establishment and seedling height in two japonica rice were significantly increased priming by sand after low temperature stress. The content of chlorophyll, proline and soluble sugar in rice seedling were significantly increased. The sand priming treatment for seed could prohibit the leakage of cell of seedling root, reduce the content of MDA and increase the POD and SOD activity after low temperature stress. Sand priming could increase cold tolerance of japonica rice at early growing stage.