黑龙江八一农垦大学学报
黑龍江八一農墾大學學報
흑룡강팔일농은대학학보
JOURNAL OF HEILONGJIANG AUGUST FIRST LAND RECLAMATION UNIVERSITY
2015年
2期
23-26
,共4页
周燕%张亚玲%王丹%徐春莹%于连鹏%靳学慧
週燕%張亞玲%王丹%徐春瑩%于連鵬%靳學慧
주연%장아령%왕단%서춘형%우련붕%근학혜
水稻%稻瘟病菌%抗病性%致病性%毒力频率
水稻%稻瘟病菌%抗病性%緻病性%毒力頻率
수도%도온병균%항병성%치병성%독력빈솔
rice%rice blast fungus%disease resistance%pathogenic%virulence frequency
采用幼苗期接种及毒力频率、致病率分析方法,检测来自黑龙江省20个县(市、区)的90个稻瘟病菌株对当地主栽水稻品种的致病能力。结果表明,黑龙江省稻瘟病菌群体结构是比较复杂的,不同菌株的致病力存在较大差异,但仅有10%菌株表现强或较强致病力(PF≥50%);不同地区、甚至同一地区的不同菌株致病力也有较大差异。各主栽水稻品种的抗病能力存在显著差异,其中龙粳41等14个品种抗性较强(VF≤15%)。
採用幼苗期接種及毒力頻率、緻病率分析方法,檢測來自黑龍江省20箇縣(市、區)的90箇稻瘟病菌株對噹地主栽水稻品種的緻病能力。結果錶明,黑龍江省稻瘟病菌群體結構是比較複雜的,不同菌株的緻病力存在較大差異,但僅有10%菌株錶現彊或較彊緻病力(PF≥50%);不同地區、甚至同一地區的不同菌株緻病力也有較大差異。各主栽水稻品種的抗病能力存在顯著差異,其中龍粳41等14箇品種抗性較彊(VF≤15%)。
채용유묘기접충급독력빈솔、치병솔분석방법,검측래자흑룡강성20개현(시、구)적90개도온병균주대당지주재수도품충적치병능력。결과표명,흑룡강성도온병균군체결구시비교복잡적,불동균주적치병력존재교대차이,단부유10%균주표현강혹교강치병력(PF≥50%);불동지구、심지동일지구적불동균주치병력야유교대차이。각주재수도품충적항병능력존재현저차이,기중룡갱41등14개품충항성교강(VF≤15%)。
The pathogenicity of 90 rice blast strains collected from Heilongjiang province was compared by using two reliable methods of toxicity frequency and pathogenicity method. The results showed that the rice blast fungus population structure of Heilongjiang was very complex,there was the big difference in these strains,but only 10% of these strains showed strong virulence (PF≥50%). In addition,the significant difference of pathogenicity of these strains could also be observed in different regions or even in one region. The significant difference of disease resistance could also be observed among these major rice varieties, especially in Longjing 41 and other 14 rice varieties(VF≤15%).