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氯化胆碱对小麦光合性能及生长的影响
何若天; 魏道智;
1.广西农业大学;2.河北农业大学邯郸分校
摘要:
盆栽和田间试验结果表明:经喷施有效作用浓度范围(200—500ppm)氯化胆碱(CC)后的小麦叶片叶绿素含量略有增加,希尔反应和光合速率增高:促进了游离叶绿体非环式光合电子传递活性;叶绿体片展的发育有所改善;Ca(2+)-ATP酶和Ma(2+)-ATP酶活性均有所提高;对正常呼吸代谢活力无影响.但降低了光呼吸的关键酶乙醇酸氧化酶活性,利于光合提高。对田间小麦株高无明显影响,但叶面积明显增加,功能叶寿命延长;千粒重和小区产量增加;对籽粒含氮量、蛋白质、粗脂肪等含量无明显影响,但总糖量明显增加。本文对CC促进小麦光合性能之原因和有效作用浓度作了讨论。
关键词:  小麦  氯化胆碱  光合性能  生长  
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