氯酸钾对龙眼花芽分化期若干生理指标影响的研究.pdfVIP

中回琅学通报 第20卷 第4期 20(”年8月 氯酸钾对龙眼花芽分化期若干生理指标影响的研究 卢美英’，周歧伟’，朱建华2，黄景芬3，朱建武3，何全光’， 黄永敬 ，‘徐炯志’，黄桂香’ (，广西大学农学院，南宁530005;2广西农科院，南宁530007; 3广西扶绥梁黎华侨林场，扶绥532107) 摘 要:在石砍龙眼花芽分化时期，根部施用氛酸钾，观察和测定若干生理指标及枝梢抽花穗率、单 株产童和果实致育率，结果表明:适量施用氛酸钾，(1)提高了叶片中的叶绿素含童;(2)净光合速率 (Pn)在生理分化期低于对照，进入形态分化期则高于对照;(3)可溶性糖、还原糖、可溶性蛋白质含量 明显增加;(4)内源乙烯的发生童远远高于对照，出现高峰的快慢因氛酸钾施用童而异，施用量大，则 出现高峰快，反之则慢些;(5)过氧化物酶(POD)活性低于对照，而高于喷洒乙烯利等常规促花措施; (6)枝梢抽花穗率略有提高，果实致育率下降，单株产量明显提高。 关键词:龙眼;氛酸钾;叶绿素;净光合速率;可溶性糖;可溶性蛋白质;内源乙烯;过氧化物酶 EffectsofPotassiumChlorateonSomeBiologicalIndexesinthePeriodof FlowerBudDifferentiationofLongan LuMeiying,ZhouQiwei,ZhuJianhua2,HuangJinfen3,ZhuJianwu3, HeQuanguang，HuangYon.ing，XuJiongzhi,HuangGuixiang (Agric.College,GuangxiUniv.,Nanning530005;2HorticulturalResearchInstitute,GuangxiAcademy ofAgriculturalScience,Nanning530007;3QuhHuaqiaoForestryCentre,Fushui532107) Abstract:Potassiumchloratewasappliedto `Shixialongantreesassoildrenchintheperiodofflower buddifferentiation,somebiologicalindexeswereresearched.Theconclusionwas:(1)ThecontentsofCHL wasinduced.(2)Netphotosyntheticratewasreducedinperiodofphysiologicaldifferentiation,and-was raisedinperiodofmorphologicaldifferentiation.(3)Contentsofsolublesugar,reductivesugar,andsoluble proteinwereincreasedinevidence.(4)Contentsofendogeneticethylene(ETH)outclassesedCK,thespeed ofETHpeakcomingdependspotassiumchloratedosage,thebiggerdosagethesoonerspeed.(5)Activity ofPODenzymewasunderthenCK,buthigherthantraditionalpromotingflowermeasuresforexample sprayingETH.(6)Therateofflowershootwasalittlehigherthe