论文部分内容阅读
童期是指多年生木本植物实生苗的生命周期中不能获得或不能保持开花状态的时期。童期长(柑桔5—8年),育种世代交替慢是果树改良的主要障碍.而且,优良果树品种的多数农艺性状和食用品质均呈基因型杂合和多基因数量遗传的特性.使这些问题愈加突出。生物技术在果树改良中有广阔的应用前景,但童期仍然是一块绊脚石,因为从试管内体细胞胚发生所再生的植株是童年植株,不定芽所发生的植株则表现出包括延迟开花在内的童稚
Childhood refers to the period of perennial woody plant life can not be obtained or can not maintain flowering period. Long periods (citrus 5-8 years) and slow breeding generations are the major obstacles to the improvement of fruit trees. Moreover, most agronomic traits and eating qualities of fine fruit trees are characterized by heterozygous and polygenic genetic numbers. The problem is more prominent. Biotechnology has broad application prospects in the improvement of fruit trees, but childhood is still a stumbling block because plants regenerated from in vitro in vitro somatic embryos are childhood plants and plants from adventitious buds appear to include delayed flowering Childish childish