利用抗感品种混种防治大豆胞囊线虫效果的研究  

Effect of Cultivar Mixture on Growth and Developoment of Soybean Inoculated with Soybean Cyst Nematode

作　　者：胡新[1,2] 许艳丽 高世杰 LI Shu-xian 

机构地区：[1]中国科学院东北地理与农业生态研究所黑土区农业生态院重点实验室,黑龙江哈尔滨150081 [2]黑龙江农垦九三管理局植保植检站,黑龙江嫩江161441 [3]United States Department of Agriculture-Agricultural Research Service( USDA/ARS), Crop Genetics Research Unit( CGRU),Stoneville, MS 38776, USA [4]黑龙江省尖山农场,黑龙江嫩江161441

出　　处：《大豆科学》2012年第3期449-452,共4页Soybean Science

基　　金：黑龙江省科技计划项目(GA09B103-10);黑龙江省自然科学基金项目(C200630)

摘　　要：在温室条件下以抗大豆胞囊线虫品种抗线4号和非抗大豆胞囊线虫品种黑农35为试材,探讨了品种混种对感病大豆生长发育的作用和抗线4号根系浸出物对黑农35生长发育的影响。结果表明,接种SCN后,大豆植株生长受抑制,其中抗线4株高减少幅度最高达到21.4%,主根长减少最高达到24.9%,侧根数减少幅度为7.8%～55.1%;黑农35清种时受大豆胞囊线虫危害,株高减少15.5%～30.8%,主根长减少17.2%～32.3%,侧根数减少最高达到71.9%。抗线和非抗线品种混种有利于大豆抵御大豆胞囊线虫的危害,促进植株的生长发育,与黑农35清种相比,品种混种作物群体的株高、植株鲜重、根鲜重和根长增加幅度分别高达16.9%、11.4%、17.9%和22.2%,与抗线4清种相比,品种混种主根长度增加最显著,达到9.3%。抗线4根系浸出物浇灌黑农35不接种SCN处理各测定指标的增幅达0.1%～8.4%,浇灌接种SCN的黑农35,各处理测定指标的增幅达9.7%～39.4%,说明抗性与非抗性品种混种后根系间相互作用可以促进非抗性品种生长发育,抵御大豆胞囊线虫的危害。Soybean varieties mixture was used in this paper to control soybean cyst nematode（SCN）,the SCN resistant cv.Kangxian No.4 and susceptible cv.Heinong 35 were the experimental materials.The aim was to find the effect of cultivar mixture and inoculation SCN on growth of soybean and roots lixivium of Kangxian-4 on growth of Heinong 35.SCN inoculation decreased plant height,length of taproot and number of branch root for both Kangxian No.4 and Heinong 35,and the harm degree of Heinong 35 was severe.Cultivar mixed planting could alleviate the harm of SCN,compared with Heinong 35 inoculation treatment,the plant height,fresh weight and taproot length increased by 16.9%,11.4%,11.9% and 22.2%,respectively;while cultivar mixed planting increased main root length by 9.3% compared with Kangxian No.4 inoculation treatment.Root leach liquor of Kangxian No.4 increased the tested indexes of Heinong 35 by 0.1%-8.4% and 9.7%-39.4% for without and with SCN inoculation treatment,suggesting the interaction of roots lixivium could inhibit the harm of SCN and promote the growth of SCN susceptible soybeans.

关 键 词：大豆 混种 大豆胞囊线虫 根系 

分 类 号：S435.651[农业科学—农业昆虫与害虫防治]