Those plants that determined as haploids were doubled by 2%colchicine.
经鉴定为单倍体的植株，用2%秋水仙素进行加倍。
2
By measuring the endurance of yeast haploids, 13 high ethanol-production haploids and 19 good osmotolerant haploids were selected.
经筛选试验后得到13株产酒性能良好的单倍体和19株耐渗性能良好的单倍体。
3
This paper mainly discusses three topics as follows:1) Origin of haploids in higher plants, 2) Genetics of haploids, 3) Application of in vitro induced haploids.