Influences of chilling stress pre-treatments performed with various low temperatures on occurrence and development of Alternaria disease.

Cotton seedlings were pre-treated with chilling stress for 3 days, then inoculated with A. alternata isolate A1, and removed to grow at optimal temperature of 28/20°C; Different letters behind the disease index indicate significant difference with the P value of 0.05. The first letters indicate the comparison among different temperatures of chilling stress pre-treatment and the second letters indicate the comparison between XLZ13 and XLZ33.

棉籽幼苗经过3天的低温胁迫预处理后，接种了 Alternaria alternata 的菌株A1，并在28/20°C的优化温度下培养；疾病指数后不同字母表示与0.05的P值存在显著差异；首字母表示不同低温胁迫预处理温度之间的比较，而第二字母则表示XLZ13与XLZ33之间的比较。