求翻译：这部分QTL 解释了由于旱胁迫所造成表型变化的稳定性，比值越大，表明该性状在旱胁迫条件下与灌溉条件下的差异越小，对旱胁迫的稳定性较好，即抗旱性较强，否则相反是什么意思？

This part of the QTL explain phenotypic changes due to drought stress stability, ratio, the greater, indicating that the characters under drought stress conditions and irrigation of smaller differences, stability to drought stress, drought-resistance of the stronger, or contrary