The viability of seed by TTC was estimated as 85.78% (N = 11), and it was not considered to be the key limiting factor for seed germination.

• TTC法检测结果显示兔耳兰种子活力达85.；78%25(N = 11)；可见种子活力不是制约兔耳兰种子萌发的主要原因。