富锦市甜高粱主要发生病害及其防治技术

<正>凡是能在粒用高粱上发生的病害,在甜高粱上也同样能发生。甜高粱病害是影响甜高粱生长发育及产业发展的重要因素之一。因此掌握甜高粱发生的病害和潜在发生的病害具有一定的生产意义。在我国,为害甜高粱常见的病害有10多种。叶部病害有细菌性叶斑病,包括条纹病、条斑病、斑点病;真菌性叶斑病,包括炭疽病、大斑病、紫斑病、煤纹病。穗部病害有丝黑穗病、坚黑穗病、散黑穗病、麦角病。茎部病害纹枯病在春播高粱区间有发生。还有病毒引     

番茄病毒病症状识别与综合防治技术

<正>番茄病毒病在全国各地都有发生,按照病原分有烟草花叶病毒、黄瓜花叶病毒、烟草卷叶病毒、苜蓿花叶病毒、番茄斑萎病毒、马铃薯X病毒等20多种,按症状分有花叶病毒病、条纹病毒病、蕨叶病毒病、双毒条纹病毒病等4种类型,以花叶病毒病发生最为普遍。近年来,条纹病毒病、蕨叶病毒病、双毒条纹病毒病危害也日趋严重,其中条纹病毒病、双毒条纹病毒病的发病植株几乎没有产量,对番茄生产影响极大。     

番茄病毒病发生规律及防治技术

番茄病毒病在全国各地都有发生,病原有烟草花叶病毒、黄瓜花叶病毒、烟草卷叶病毒、苜蓿花叶病毒、番茄斑萎病毒等20多种,常见的症状有花叶病、条纹病、蕨叶病、双毒条纹病等4种,以花叶病发生最为普遍。近年来,条纹病、蕨叶病、双毒条纹病的为害日趋严重,其中条纹病、双毒条纹病的发病植株几乎没有产量,对番茄生产影响极大。     

7种杀菌剂对大麦条纹病的防治效果

针对大麦条纹病,选用7种杀菌剂对大麦品种甘啤4号种子处理后进行了室内毒力测定和室内发芽测定,同时进行了大田试验。结果表明,10％二硫氰基甲烷乳油,37／6敌萎丹悬浮种衣剂和0．5％二硫氰基甲烷种衣剂具有较好的抑菌效果,其EC。。有效抑菌浓度为2．563、7．345和19．721μg／mL;10％二硫氰基甲烷乳油、8％克...     

玉门市大麦条纹病的发生与防治

大麦条纹病是啤酒大麦生产中的主要病害之一,通过对玉门市啤酒大麦条纹病发生情况的调查,在对发病原因进行分析的基础上,提出玉门市啤酒大麦条纹病的防治措施。     

施保克可有效防治大麦种传病害

<正>大麦散黑穗病和条纹病是典型的种传病害,即由种子带菌引起全株系统发病,对大麦产量影响较大。过去防治大麦种传病害多采用浸种灵浸(拌)种处理方法,但防效不稳定。近两年有些地方用施保克处理麦种,取得了明显防     

青稞昆仑164

青稞昆仑164青稞昆仑164系青海省农林科学院作物所与青海省海北州农科所采用杂交方法配育而成,组合为北青2号×11－57。1996年11月经青海省品种审定委员会审定。适宜于青海省中、高位山旱地种植。特征特性：昆仑164属春性,生育期123~126天……     

大麦条纹病的发生原因及防治方法

黑龙江省建设农场2005年种植大麦0．47万hm^2，最高单产5．5t／hm^2，最低单产1．7t／hm^2。其中对大麦产量影响较大的因素是条纹病发生严重，严重地块发病率高达44％，现就大麦条纹病的发生原因及防治方法介绍如下。[第一段]     

Quantitative Trait Loci for Resistance to Stripe Disease in Rice （Oryza sativa）

In order to map the quantitative trait loci for rice stripe resistance, a molecular linkage map was constructed based on the F2 population derived from a cross between Zhaiyeqing 8 and Wuyujing 3. Reactions of the two parents, F1 individual and 129 F2:3 lines to rice stripe were investigated by both artificial inoculation at laboratory and natural infection in the field, and the ratios of disease rating index were scored. The distribution of the ratios of disease rating index in Zhaiyeqing 8/Wuyujing 3 F2:3 population ranged from 0 to 134.08 and from 6.25 to 133.6 under artificial inoculation at laboratory and natural infection in the field, respectively, and showed a marked bias towards resistant parent (Zhaiyeqing 8), indicating that the resistance to rice stripe was controlled by quantitative trait loci (QTL). QTL analysis showed that the QTLs detected by the two inoculation methods were completely different. Only one QTL, qSTV7, was detected under artificial inoculation, at which the Zhaiyeqing 8 allele increased the resistance to rice stripe, while two QTLs, qSTV5 and qSTV1, were detected under natural infection, in which resistant alleles came from Zhaiyeqing 8 and Wuyujing 3, respectively. These results showed that resistant parent Zhaiyeqing 8 carried the alleles associated with the resistance to rice stripe virus and the small brown planthopper, and susceptible parent Wuyujing 3 also carried the resistant allele to rice stripe virus. In comparison with the results previously reported, QTLs detected in the study were new resistant genes to rice stripe disease. This will provide a new resistant resource for avoiding genetic vulnerability for single utilization of the resistant gene Stvb-i.