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选用对黑斑病菌具有不同抗感程度的甘薯品种(R:85-2458,S:85-180)块根组织为材料。研究了不同甘薯品种对黑斑病菌的抗性与抗氰呼吸、乙烯释放量、过氧化物酶活性的相互关系。结果表明,不同抗感材料接种后的抗氰呼吸活性明显高于伤害组织(对照)。抗病品种在接种和伤害情况下,其抗氰呼吸活性明显高于感病品种,而且持续时间较长。乙烯释放量、过氧化物酶活性与抗氰呼吸的变化趋势相一致。甘薯品种块根组织对黑斑病菌的抗性与抗氰呼吸活性及对总呼吸的贡献大小有关。
The sweet potato variety (R: 85-2458, S: 85-180) with different degree of resistance to Alternaria alternata was used as the material. The relationship between resistance to Alternaria and resistance to cyanide respiration, ethylene release and peroxidase activity of different sweet potato cultivars was studied. The results showed that the resistence of cyanide respiration after inoculation with different anti-inflammatory materials was significantly higher than that of the injured tissues (control). In the case of inoculation and injury, resistant varieties had significantly higher resistance to cyanide respiration than susceptible varieties, and lasted longer. Ethylene emissions, peroxidase activity and cyanide respiration trend consistent. The resistance of sweet potato variety tuber to Alternaria was related to its resistance to cyanide respiration and the contribution to total respiration.