外源Ca^(2+)及其相关物质对抛秧稻立苗的影响  

Effects of Exogenous Calcium and It's Related Substances on Scattering-Planted Rice Seedlings' Bending Upward

作　　者：吕冰[1] 朱华伟 梁建生[2] 曹显祖[1] 宋平[1] 

机构地区：[1]扬州大学农学院植物生长发育研究室,江苏扬州225009 [2]扬州大学生物科学与技术学院,江苏扬州225009

出　　处：《作物学报》2001年第1期55-58,共4页Acta Agronomica Sinica

基　　金：江苏省联建重点学科项目!(97-01)

摘　　要：本研究用不同浓度的外源Ｃａ２＋及其相关物质处理水稻秧苗，然后将秧苗水平放置，观察它们 对立苗的影响。结果表明：外源Ｃａ２＋处理促进了立苗速度和立苗幅度的提高，而不利于Ｃａ２＋浓度增加 的因素，如 Ｃａ２＋螫合剂 ＥＤＴＡ、 Ｃａ２＋通道抑制剂 ＴＦＰ处理，都抑制了水平放置苗的立苗。这从实践上 证明了Ｃａ２＋在调节植物正、负向重性反应中具有重要的作用。The effects of exogenous Ca2+ and its related substances on the scattering-planted rice seedlings' bending upward were studied and the results were as follows: Calcium plays an important role in the gravitropism of rice seedlings and high [Ca'+] has a positive effect on the bending upward of horizontal seedlings. The EDTA and TFP inhibit the effect of Ca2+.

关 键 词：抛秧稻 立苗 向重性 钙离子 向性理论 

分 类 号：Q945[生物学—植物学]