在茎椰菜育种过程中,我们对由培养花营外植体得到的绿岭、中生、绿洋、早生四个品种(F_1)的一批试管苗在常温下,进行了长期保存观察。试管苗放在一间朝北仓库的近窗口处(利用自然光),光照强度经常为100～1000勒克司,室温变化为3～35℃。从1981年6月9日～1982年6月9日,保存一年,培养基逐步干涸,植株外部叶片枯死,但生 In the process of broccoli breeding, we conducted a long-term preservation observation of a series of in vitro seedlings of four varieties (F_1) of Lvling, Mesozoic, Lvyang and Zaosheng obtained from culturing camping explants. The test tube is placed near the window of a northbound warehouse (using natural light) with a light intensity of 100 to 1000 lux and a room temperature of 3 to 35 ° C. From June 9, 1981 ~ June 9, 1982, preserved for one year, the medium gradually dried up, the outer leaves of plants withered, but students