CAJ | 학술논문

[目的]明确油菜根肿病在湖北省的发生范围和病害引起的油菜产量损失。[方法]2009—2011年间取样调查了我省沙洋县、当阳市、枝江市、宜都市和长阳县的根肿病的发生情况，通过盆栽接种试验和PCR分子检测确定根肿病。测最病区油菜根肿病的发病率。产量组成因子和小区产量，与健康区比较．评估根肿病引起的油菜产量损失。[结果]在枝江市和当阳市发现并确诊了油菜根肿病，沙洋和宜都没有发现油菜根肿病．而长阳县的根肿病主要发生在十字花科蔬菜上。发生根肿瘸后，油菜植株的一次有效分枝数、单株有效角果数、每角粒数和千粒重显著下降．产量损失达56．4％。[结论]湖北省油菜根肿病主要分布于枝江市和当阳市。病害的发生对油菜生长和产量造成较大影响。
[목적]명학유채근종병재호북성적발생범위화병해인기적유채산량손실。[방법]2009—2011년간취양조사료아성사양현、당양시、지강시、의도시화장양현적근종병적발생정황，통과분재접충시험화PCR분자검측학정근종병。측최병구유채근종병적발병솔。산량조성인자화소구산량，여건강구비교．평고근종병인기적유채산량손실。[결과]재지강시화당양시발현병학진료유채근종병，사양화의도몰유발현유채근종병．이장양현적근종병주요발생재십자화과소채상。발생근종가후，유채식주적일차유효분지수、단주유효각과수、매각립수화천립중현저하강．산량손실체56．4％。[결론]호북성유채근종병주요분포우지강시화당양시。병해적발생대유채생장화산량조성교대영향。
[Objective] The aim of this study was to reveal the distribution of rapeseed clubfoot disease in Hubei Province and to assess the yield loss caused by the pathogen, Plasmodiophora brassicae. [Method] Field surveys were conducted in Shayang, Dangyang, Zhijiang, Yidu and Changyang of Hubei Province during 2009- 2011. Clubfoot disease of rapeseed samples from the surveyed locations were con- firmed by PCR detection and plants infection experiment. The factors of yield and plot yields influenced by clubroot disease were determined in plot experiment. [Re- salt] Rapeseed clubroots were confirmed in Zhijiang and Dangyang and not found in Shayang and Yidu. Clubroot was found in cruciferous vegetables but not in rapeseed d in Changyang. Infection of P. brassicae significantly decreased of the first effective branch numbers of rapeseed, effective pod number per plant, seed number per pod and 1 000-grain weight. Yield of infected rapeseed decreased by 56.4% over non-infected control. [Conclusion] Rapeseed clubroot disease mainly distributed in Zhijiang and Dangyang of Hubei Province. The disease had an economic impact on rapeseed production.