普通白菜品种对上海地区根肿病抗性比较分析

选用常规栽培的6个普通白菜品种,在上海弘阳农庄基地进行抗根肿病对比试验;并测定发病植株与正常植株的部分生理指标。结果表明:超越808和福盛218的病情指数30,表现感病;青阳和金品夏恋的病情指数在10~20之间,表现抗病;超越909病情指数10,表现高抗;金品绿优美病情指数为0,表现免疫。6个普通白菜品种发病植株的叶长、叶宽、株高、叶绿素含量、可溶性蛋白含量、根部Na+含量均低于正常植株,但可溶性糖含量、根部K+含量及K+/Na+比值均显著高于正常植株。综合各项指标测定结果,金品绿优美可考虑作为上海地区根肿病病区主栽品种及辅助育种材料。

Comparative Analysis of Clubroot Resistance between Different Cultivars of Pakchoi

The experiment was conducted in the greenhouse of Hongyang Farm in Shanghai．Sixconventional cultivated pakchoi〔Brassica campestris L. ssp. chinensis（L.）Makino var. communist Tsen etLee〕cultivars were used to carry out comparative trial on clubroot resistance and to measure partial physiologicalindicators between the susceptive and normal plants．The results showed that the disease indexes of‘Chaoyue808’and‘Fusheng 218’were more than 30．They were susceptible．The disease indexes of‘Qingyang’and‘Jinpinxialian’were 10-20．They were resistant．The disease index of‘Chaoyue 909’was less than 10．It showedhigh resistance．The disease index of‘Jinpinlyuyoumei’was 0，it was immune．The leaf length，leaf width，plant height，chlorophyll content，soluble protein content and Na⁺ content in root of the susceptible pakchoi plantswere lower than that of the normal plants among the 6 tested normal pakchoi cultivars．However，the contents ofsoluble sugar，K⁺ content and K⁺/Na⁺ ratio in root were significantly higher than that of the normal plants．Theresults of testing each physiological indicators showed that‘Jinpinlyuyoumei’could be used as major cultivar andassisting breeding material in Shanghai area.