CAJ | 학술논문

利用我国7个统一鉴别品种鉴定2006～2008年从江西省31个水稻主产县(市)采集分离的195个稻瘟病菌有效单孢菌株,共鉴定到6群40个生理小种.所测菌株中ZB群出现频率最高,分布最广,为优势小种群.主要的优势小种为ZB_(13)、ZB_(15)、ZA_1,出现频率分别为14.36%、13.33%、6.67%、6.67%;3年中小种类群及优势小种的构成有一定的差异,在稻瘟病流行的2006年,小种类群以ZA和ZB为主,主要的优势小种为ZB_(13)和ZA_1,频率分别为17.65%和11.76%;在稻瘟病中发偏轻的2007年和2008年,小种类群及优势小种的构成均较为一致,2年中小种类群均以ZB为主,如2008年优势小种为ZB_(15)和ZB_(13),频率分别为18.92%和10.81%;试验结果同时表明,同一穗瘟病标本中不同单孢菌株的生理小种不同,并讨论江西省稻瘟病菌生理小种的年度动态变化.
이용아국7개통일감별품충감정2006～2008년종강서성31개수도주산현(시)채집분리적195개도온병균유효단포균주,공감정도6군40개생리소충.소측균주중ZB군출현빈솔최고,분포최엄,위우세소충군.주요적우세소충위ZB_(13)、ZB_(15)、ZA_1,출현빈솔분별위14.36%、13.33%、6.67%、6.67%;3년중소충류군급우세소충적구성유일정적차이,재도온병류행적2006년,소충류군이ZA화ZB위주,주요적우세소충위ZB_(13)화ZA_1,빈솔분별위17.65%화11.76%;재도온병중발편경적2007년화2008년,소충류군급우세소충적구성균교위일치,2년중소충류군균이ZB위주,여2008년우세소충위ZB_(15)화ZB_(13),빈솔분별위18.92%화10.81%;시험결과동시표명,동일수온병표본중불동단포균주적생리소충불동,병토론강서성도온병균생리소충적년도동태변화.
195 monoconidial cultures of the rice blast fungus(Magnaporthe grisea)sampled from 31 counties or cities in Jiangxi Province.China during 2006～2008 were isolated.The virulence of these isolates was assaved with 7 differentials.Forty races belonging to 6 groups could be differentiated,of which ZB group was the most prevalent group,the predominant races were ZB_(13),ZB_(15),ZB_5 and ZA_1,with the frequency of 14.36%,13.33%.6.67% and 6.67% respectively.There ale some differences among predominant groups and races over the three years(2006～2008).Most of the isolates belonged to ZA and ZB groups,and the predominant races were ZB_(13) and ZA_1,with the frequency of 17.65% and 11.76% respectively in 2006 when rice blast was in epidemic:and the group and predominant races were similar over the years of 2007～2008 when the disease was moderately-ligllt,most isolates belonged to ZB group,for instance,in 2008 the predominant races were ZB_(15) and ZB_(13),with the frequency of 18.92% and 10.81% respectively.The physiological races of different single isolates from the same sample were different.The dynamic of races over the three years is discussed in the paper.