植物低温保护剂对浸种棉苗生理生化及产量的影响  

Effect Of PLTPA on the Physiological and Biochemical Characteris-tics and Yield of the Cotton Seedlings of Soaked Seeds

作　　者：武孟祥[1] 郝联芳[1] 

机构地区：[1]陕西师范大学生物系

出　　处：《棉花学报》1996年第1期40-43,共4页Cotton Science

基　　金：陕西省自然科学基金

摘　　要：研究表明，浸种棉苗ＳＯＤ（超氧物歧化酶）、ＰＯＤ（过氧化物酶）、ＣＡＴ（过氧化氢酶）活性升高；ＭＤＡ（丙二醛）含量及电导率降低；Ｐｒｏ、可溶性总糖和叶绿素含量增加；根和叶ＴＴＣ（氯化三苯基四氮唑）还原率同步增大，电导率同步降低。田间试验结果在明，座桃率提高，霜前花增多，稳产高产优质。棉苗喷药可抵抗－２℃（５ｈ）～－３℃（３ｈ）～－４℃（３ｈ）～－５℃（１ｈ）长达１２小时不受冻害，这种抗寒力可保持１个月。Physiological and biochemical measurement showed that cotton seedlings ofsoak seeds,the enzvme activities of SOD、POD and CAT increased while the content ofMDA declined;meanwhile,the contents of Pro,soluble sugar and chlorophyll increased;moreover.increase of TTC reducing rate aiid the decrease of the electrical conductivityrate synchronized perfectly in the root and leaf.ResuIt of the field experiment of the cot-ton seedlings of soaked seeds showed that fruit setting rate and prefrost seed cotton in-creased.and it played an important role to get the high yield and high quality of the cot-ton.The cotton seedlings sprayed with PLTPA were exposed to-2℃(5h)～-3℃(3h)～-4℃(3h)～-5℃(1h)for 12 houres without damage.The cold resistance could be kept-ed l month.

关 键 词：植物低温保护剂 浸种 棉苗 生理生化特性 产量 抗寒力 

分 类 号：S562.01[农业科学—作物学] S482