抗旱剂对粳稻幼苗生长和一些生理特性的影响

以粳稻合系22-2为材料,研究幼苗期干旱胁迫下喷施乙酰水杨酸和EDTA抗旱剂对幼苗生长和一些生理指标的影响。结果表明,幼苗期干旱胁迫下喷施乙酰水杨酸和EDTA有利于促进粳稻幼苗叶片和根系生长,增加叶片叶绿素和可溶性糖含量,降低脯氨酸含量,提高叶片渗透调节能力和保水能力,显著降低丙二醛含量,减少细胞膜伤害,有利于抗旱保苗。两种抗旱剂中乙酰水杨酸处理对提高粳稻幼苗抗旱能力的效果较EDTA强,浓度均以1g/L较佳。

Effects of Drought Resistant on Seedling Growth and some PhysiologyCharacteristics of Japonica Rice

Effects of spraying drought resistant of acetylsalicylic acid and EDTA at seedling stage under drought stress on seedling growth and some physiology characteristics of seedling were studied with Japonica rice Hexi 22-2.The results indicated that spraying drought resistant of acetylsalicylic acid and EDTA at seedling stage under drought stress was beneficial to promote the growth of leaves and roots,and the chlorophyll contents and the soluble sugar content of leaf were increased,but the proline content was decreased,and explain it helps to improve the osmotic adjustment ability and water retaining capacity of leaves.The results showed that spraying drought resistant decreased significantly the MDA content and reduced the membrane damage,which was beneficial to keep crop seedling against drought.So the acetylsalicylic acid treatment was better than EDTA for promoting the drought-resistant ability of seedling of Japonica rice,and the better concentrations was 1g/L.