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Position: Home > Articles > MINERAL CONTENT IN POTATO TUBERS AND THEIR EFFECT ON BACTERIAL SOFT ROT Acta Phytopathologica Sinica 1989 (1) 41-45

马铃薯块茎中一些矿质元素的含量及其在软腐病发生中的作用

作  者:
张学君;王金生;方中达
摘  要:
测定了对细菌性软腐病抗感能力不同的3个马铃薯品种的块茎中14种矿质元素的含量。发现薯肉组织中Cu、Zn的含量高低与品种对伤口侵染的抗性强弱有相关性。Ni、K也有类似情况,而Ca、Mg含量与抗性无关。用溶液渗透法浸泡薯块后,只有CuS0_4能显著抑制软腐病的发生。Zn、Fe、Al等在一定浓度时也有一些作用。Mg处理无效,Ca处理只能使薯块腐烂面积略有减小,而不能减少腐烂病斑数。对于自然带菌和人工接种的薯块。CuSO_4·5H_2O的浓度分别为500和5000mg/L时防效达100%。
译  名:
MINERAL CONTENT IN POTATO TUBERS AND THEIR EFFECT ON BACTERIAL SOFT ROT
作  者:
Zhang Xuejun;Wang Jinsheng;Fang Zhongda Nanjing Agricultural University
摘  要:
Fourteen elements were analysed in tubers of 3 varieties which have signi-ficant difference in resistance to bacterial soft rot.The content of Cu and Zn,and less obviousely,those of K and Ni in medullar tissues were correlated with resistance to wound infection,while Ca and Mg levels were similar among the 3 varieties.In dipping tests,only CuSO_4.5H_2O could sharply inhibit the disease,with a complete control at 500 mg/L,Zn,Fe,A1 showed weak effect,and Mg treatment was not effective.After dipping in Ca solution,soft rot surface of tu-bers was slightly reduced,but the number of diseased tubers was not,in comparing with control.

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