The factors which influenced somatic embryogenesis and plantlet regeneration in Picea meyeri Rehd. et Wils. were studied in order to establish a high frequency embryogenetic system.

摘要为建立白杄体细胞胚胎发植株再的高频率实验系统，对聚乙二醇干化处理的响进行了系统。

Apoptosis and the tolerance of plantlets of Acacia implexa treated in vitro with cold stress were studied by microphotographics and total DNA agarose gel electrophoresis.

摘要利用显微观察和DNA凝胶电泳等技，在低温胁迫诱导下灰木相思组培苗细胞的凋亡和对低温环境的耐受性。