甘薯郑红22脱毒及适宜密度、肥料配比研究  

Study on Virus-Elimination,Suitable Density and Fertilizer Combination of Zhenghong 22

作　　者：杨育峰[1] 张晓申[2] 王慧瑜[2] 王雁楠[1] 徐心志[1] 陈献功[1] 张莉[1] 杨晓平[1] 杨国红[1] 平西栓 YANG Yufeng;ZHANG Xiaoshen;WANG Huiyu;WANG Yannan;XU Xinzhi;CHEN Xiangong;ZHANG Li;YANG Xiaoping;YANG Guohong;PING Xishuan(Cereal Institute,Henan Academy of Agricultural Sciences,Zhengzhou 450002,China;Zhengzhou Institute of Agricultural and Forestry Sciences,Zhengzhou 450005,China;Henan Agricultural Technology Extension Station,Zhengzhou 450002,China)

机构地区：[1]河南省农业科学院粮食作物研究所,河南郑州450002 [2]郑州市农林科学研究所,河南郑州450005 [3]河南省农业技术推广总站,河南郑州450002

出　　处：《河南农业科学》2019年第8期34-38,共5页Journal of Henan Agricultural Sciences

基　　金：国家甘薯产业技术体系郑州综合试验站项目(CARS-10-C14);河南省科技攻关计划项目(172102110080);河南省农业科学院科研发展专项资金项目(2018XKYH01)

摘　　要：以兼用型甘薯品种郑红22为材料,筛选适合郑红22茎尖再生的分化培养基,并对郑红22脱毒再生植株进行扩繁和移栽,探讨不同种植密度及肥料配比对脱毒郑红22鲜薯产量的影响,以明确适宜郑红22的高效脱毒及栽培技术。结果表明,当NAA(萘乙酸)、6-BA(6-苄氨基嘌呤)的添加量分别为0.1、3mg/L时,郑红22茎尖分生组织的再生率最高,为54.58%。随着种植密度的增加,脱毒郑红22的鲜薯产量先增加后减少,当种植密度为48750株/hm^2时,鲜薯产量最高,为46906.78kg/hm^2。当N、P2O5、K2O施用量分别为75.0、75.0、180.0kg/hm^2时,脱毒郑红22鲜薯产量最高,为47555.02kg/hm^2,比不施肥处理极显著提高16.09%。In order to obtain efficient detoxification and cultivation techniques for Zhenghong 22(a dual-purpose sweet potato variety),differentiation medium was screened for plant regeneration from stem apex of Zhenghong 22,the virus-free regenerated plants were propagated and transplanted to the field,and the effect of different planting densities and proportion of fertilizer on yield of fresh sweet potato of virus-free Zhenghong 22 was studied.The results showed that the highest regeneration rate(54.58%)was obtained after cultured with modified MS medium which contained 0.1 mg/L NAA and 3 mg/L 6-BA.The yield of fresh sweet potato of virus-free Zhenghong 22 increased first and then decreased with the increase of planting density.The highest fresh sweet potato yield of virus-free Zhenghong 22 was 46 906.78 kg/ha under the planting density of 48 750 plants/ha.The highest fresh sweet potato yield was 47 555.02 kg/ha when the application rates of nitrogen(N),phosphorus(P2O5)and potassium(K2O)were 75.0 kg/ha, 75.0 kg/ha and 180.0 kg/ha,respectively,which significantly increased by 16.09% compared with the treatment without fertilizer.

关 键 词：郑红22 甘薯 脱毒 密度 肥料 产量 

分 类 号：S531[农业科学—作物学]