Abstract

Info

Title:: Effect of Different Potassium Treatments on Physiological Characteristics and Production of Amorphophallus konjac cv.‘Fuyuan’

Author(s):: DUAN Yuyun1; 2; DONG Kun3; LI Exian1; WAN Tao1; 4; PAN Kaihua3; ZENG Liqiong1; （1.Biotechnology and Genetic Germplasm Institute，Yunnan Academy of Agricultural Sciences/Yunnan Provincial Key Lab of Agricultural Biotechnology/Key Lab of Southwestern Crop Gene Resource and Germplasm Innovation，Ministry of Agriculture，Kunming,Yunnan 650223；2.Management Office of Transformation of Scientific and Technological Achievements，Yunnan Academy of Agricultural Sciences，Kunming,Yunnan 650231；3.Fuyuan Konjac Institute，Yunnan Academy of Agricultural Sciences，Fuyuan,Yunnan 655500；...

Keywords:: Amorphophallus konjac; potassium treatment; physiological characteristics; production

Abstract:: Using Amorphophallus konjac cv.‘Fuyuan’as test material，the planting test was conducted under the different potassium treatments (the K2SO4 application amount of the treatment 0,1,2,3 was respectively 0.0,2.2,4.4,6.6 g/plant) by the greenhouses potted planting.Chlorophyll content,soluble protein content，soluble sugar content，malondialdehyde(MDA) content,superoxide dismutase (SOD) activity,peroxidase (POD) activity,catalase (CAT) activity of A.konjac ‘Fuyuan’ were measured on 5,15,30,60 days after using different amount of K2SO4.The results showed that the appropriate potassium amount (treatment 2) was help to improve the content of the chlorophyll and the soluble protein and the soluble sugar，to enhance the activity of SOD and CAT and POD，to decrease the content of MDA in the leaves of A.konjac‘Fuyuan’.That had certain physiological effects on the antioxidant enzyme system and the membranous peroxide system，and enhanced the ability of the plant to resist the stress and the slow death，and thereby affected the photosynthesis synthesis and the synthesis，the conversion and the transport of the assimilation，so that the high yield was obtained.When the treatment 2 was applied，the harvest large taro weight was the highest up to 485.71 g with the equivalent yield 36 428.25 kg/hm2，which was 1.50 times that of the treatment 0 and 1.56 times that of the treatment 3.

[1]高家合,刘运国,李梅云,等.烤烟根茎叶对钾肥的吸收利用率研究[J].中国农学通报,2009,25(4):101-105.

[2]胡泓,王光火.钾肥对杂交水稻养分积累以及生理效率的影响[J].植物营养与肥料学报,2003,9(2):184-189.

[3]胡玮,李京召,张淑香.钾对不同番茄线虫抗性品种生理指标的影响[J].中国生态农业学报,2011,19(1):98-102.

[4]段玉云,董坤,王片吉,等.富源花魔芋对不同施用量硝酸钾的吸收利用研究[J].西南农业学报,2015,28(4):1697-1701.

[5]刘岱松.氨基酸钾肥对烟草生理指标及品质的调控研究[D].沈阳:沈阳农业大学,2009.

[6]姬晓明,齐凤慧,尹静,等.钾肥对白桦生理特性及三萜含量的影响[J].中国农学通报,2012,28(4):13-17.