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马铃薯块茎在为期4个月的低温贮藏过程中,游离氨基酸含量变化很大,但品种之间没有一致的变化趋势,与其对软腐病的抗性也没有明显的关系。17个品种的测定表明,品种的游离氨基酸含量高低与抗性无关。经低温处理和部分厌氧处理,较感病的品种克新四号的游离氨基酸含量变化与感病性呈正相关,较抗病的品种克新九号的游离氨基酸含量变化与抗病性呈正相关。受到侵染后,感、抗品种的腐烂组织中游离氨基酸都减少,而在病健交界处的组织中大量积累游离氨基酸.
During storage of potato tubers for 4 months at low temperature, the content of free amino acids varied greatly, but there was no consistent trend among the varieties, and there was no obvious relationship between them. Determination of 17 varieties showed that the variety of free amino acid content has nothing to do with the resistance. After low temperature treatment and partial anaerobic treatment, the change of free amino acid content of the susceptible variety Kexin No.4 was positively correlated with the susceptibility, and the change of free amino acid content of the resistant variety Kexin9 was positively correlated with the disease resistance . After being infected, the free amino acids in the decay tissues of susceptible and resistant varieties decreased, while a large amount of free amino acids accumulated in the tissues of the diseased junction.