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引言早熟桃和极早熟桃种胚发育时间短,只有65—90天左右,积累的干物质少,因而播种不能萌发或萌发率极低,这是早熟桃和极早熟桃育种工作的一大难题。国内外果树育种家极重视应用种胚培养方法,促进种子发芽,解决早熟桃杂交育种和实生选种的问题,以便培育出更早熟的高产优质桃新品种,满足人民生活的需要。近年来,胚培养的技术日渐发展在桃胚培养方面进行了不少研究工作。一些研究报告指出,早熟桃果实发育日数在100天以内的种胚发育不充实,萌发率极低。许多胚培养试验表明,果实发育70—75天
Introduction Premature peach and very early peach embryo development time is short, only 65-90 days, the accumulation of less dry matter, so the sowing can not germinate or germination rate is very low, which is early peach and very early peach breeding a big problem . Domestic and foreign fruit tree breeders at home and abroad attach great importance to the application of embryo culture methods to promote seed germination, early hybrid peach seed breeding and practical selection of seed selection problems in order to breed more advanced high yield and quality peach new varieties to meet the needs of people’s lives. In recent years, the embryo culture technology is developing day by day in the peach embryo culture carried on a lot of research work. Some research reports pointed out that early peach fruit development days within 100 days of embryo development is not full, the germination rate is very low. Many embryo culture experiments show that the fruit develops for 70-75 days