烯效唑对茄子苗期低温下相关生理指标的影响  

Effects of uniconazole on related physiological indexes of eggplant seedlingsat low temperature

作　　者：柴文臣 阎世江 CHAIWenchen;YAN Shijiang(College of Horticulture,Shanxi Agricultural University,Taiyuan 030031,Shanxi,China)

机构地区：[1]山西农业大学园艺学院,太原030031

出　　处：《中国瓜菜》2021年第7期67-70,共4页China Cucurbits And Vegetables

基　　金：中央引导地方科技发展资金项目;山西省科技成果转化引导专项项目(201904D131046);山西农业大学院县共建项目;山西农业大学生物育种工程项目(YZGC115);山西省农业科学院农业科技创新工程科企联合研发专项(YGC2019KQ09);山西省农业科学院农业科技创新工程科研创新团队培育专项(YGC2019TD02)。

摘　　要：为研究烯效唑对茄子幼苗耐低温性的影响,喷施不同质量浓度的烯效唑后,对茄子幼苗进行低温处理,测定低温下幼苗的茎粗、株高和耐低温指数等指标。结果表明,20 mg·L^(-1)烯效唑处理后,茄子幼苗表现出较好的耐低温性,耐低温指数达0.86。对茄子幼苗进行相同的低温处理,测定可溶性蛋白质含量及保护酶活性,结果发现上述指标在不喷施烯效唑时变化幅度较小,喷施后可溶性蛋白质含量、POD、SOD、CAT活性等指标上升,9 d后分别达13.713 mg·g^(-1)、369.650 U·g^(-1)·min^(-1)、268.349 U·g^(-1)、125.809 U·g^(-1)·min^(-1)。因此,可以在苗期喷施20 mg·L^(-1)烯效唑以提高茄子幼苗耐低温性。该方法操作简单,可以推广。In order to study the effect of uniconazole on the low temperature tolerance of eggplant seedlings,after spraying the eggplant seedlings with different densities of uniconazole,the eggplant seedlings were put in low temperature for treatment,the stem thickness,plant height,dry matter mass and low temperature tolerance index of the seedlings under low temperature were measured.The results showed that the plant height,stem thickness,dry matter mass and low temperature tolerance of the seedlings under the 20 mg·L^(-1) chemical treatment were higher,low temperature resistance index up to 0.86,the plants exhibited good low temperature tolerance,and the other mass fraction chemical treatments performed poorly,the best concentration of uniconazole was 20 mg·L^(-1).The mechanism of uniconazole action was studied,the eggplant seedlings were treated by the same low temperature,the content of soluble protein and the activities of POD,SOD and CAT were investigated.The results showed that all of the indicators changed slightly when the seedlings were non-treated,while the indicators increased after spraying uniconazole,the soluble protein content and POD,SOD,CAT activity reached 13.713 mg·g^(-1),369.650 U·g^(-1)·min^(-1),268.349 U·g^(-1),125.809 U·g^(-1)·min^(-1),respectively after 9 days.Therefore,20 mg·L^(-1) uniconazole can be sprayed at the seedling stage to improve the low temperature tolerance of eggplant seedlings.This method was simple to operate and could be promoted.

关 键 词：茄子 烯效唑 苗期 低温 生理指标 

分 类 号：S641.1[农业科学—蔬菜学]