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1、硫酸鉀不同施肥方法對菠蘿果實發(fā)育過程中糖含量及相關(guān)酶活性的影響熱帶作物2011,32(2):229—234ChineseJournalofTropicalCro硫酸鉀不同施肥方法對菠蘿果實發(fā)育過程中糖含量及相關(guān)酶活性的影響張秀梅,杜麗清,謝江輝,竇美安,姚艷麗,孫光明中國熱帶農(nóng)業(yè)科學(xué)院南亞熱帶作物研究所.廣東湛江524091摘要以栽培管理條件一致的'巴厘'菠蘿為試材.研究鉀肥的不同處理對菠蘿果實發(fā)育過程中糖分組成,含量以及蔗糖代謝相關(guān)酶活性的影響.結(jié)果表明,鉀肥處理提高了菠蘿果實內(nèi)果糖,葡萄糖和蔗糖含量.果
2、實不同發(fā)育時期,不同處理對果實蔗糖代謝酶的變化具有不同影響,但總的變化趨勢是一致的,均表現(xiàn)為隨著果實的逐步成熟,糖逐漸積累,轉(zhuǎn)化酶活性,蔗糖合成酶(SS)活性由低到高逐步上升,蔗糖磷酸合成酶(SPS)活性先升高后降低.不同處理均增加了果實轉(zhuǎn)化酶和蔗糖合成酶分解活性.降低了果實的蔗糖磷酸合成酶和蔗糖合成酶合成活性.其中以噴施K2sO和土施K2S04混合使用對果實糖含量和相關(guān)酶活性的影響效果最好,其次為噴施K2SO,土施的效果不明顯.表明,在土施和噴施2種方法一起使用時,果實是通過改變4種酶的活力來提高庫強(qiáng)度.
3、果實庫強(qiáng)度增加的同時.相應(yīng)地促進(jìn)了同化產(chǎn)物的運輸.關(guān)鍵詞菠蘿;鉀肥;糖含量;酶活性中圖分類號S668.3:S143.3文獻(xiàn)標(biāo)識碼AEffectofDifferentPotassiumFertilizationonSugarContentandRelatedMetabolicEnzymesofPineappleduringDevelopmentZHANGXiumei,DULiqing,XIEJianghui,DOUMeian,YAOYanli,SUNGuangmingSouthSubtropicalCropR
4、ese~chInstitute,ChineseAca&myofTropicalAuhuralScience,耐iang,Guangdong524091,ChinaAbstractInordertoexplorethemechanismofpotassiumeffectsonpineapplesugarmetabolismandprovideascientificandrationalfertilizerpracticeforpineappleplanting,theeffectofpotassium
5、onsugarandtheircorrelativeenzymesofpineapplewerestudied.ComtedeparispineapplewasappliedwithK2S04by4differentways.Theresultsindicatedthatpotassiumincreasedsucrose,fructoseandglucosecontentofpineapplefruit.Differentapplicationshaddifferenteffectonenzymesrela
6、tedtoSucrosemetabolismindifferentdevelopingstages.However,totalsugarcontent,invertase,sucrosesynthaseandSUCroSephosphatesynthaseactivitiesshowedaconsistentvariationtendencyasthefruitsmature.Differenttreatmen~increasedinvertaseandsucrosesynthaseleavageactiv
7、ity,andreducedsucrosephosphatesyhthaseandsucrosesynthasesyhthesisactivity.FoliagesprayingK2SO4plussoilapplyingK2S04wasmoreeffectivethantheothertwotreatments.ThisimpliedthatunderK3treatmentfruitsinkstrengthwasincreasedbyenhancingtheactivitiesofthefourenzyme
8、s.Withincreasedpineapplefruitsinkstrength,phytosynthatetranslocationwasaccelerated.KeywordsPineapplefruit;Potassiumfertilizer;Sugarcontent;Enzymeactivitydoi10.3969/j.issn.1000—2561.2011.02.009鉀是果樹生長發(fā)育所必需的一種大量
