石刁柏愈伤组织形态发生能力及器官发生的研究

石刁柏愈伤组织可分为4种类型。淡绿色、紧实、块状的愈伤组织(A)为典型的器官发生型愈伤组织,根和芽分化率高;绿白色、紧实、瘤状的愈伤组织(B)形态发生能力低;淡黄色、松散、颗粒状的愈伤组织(C)为典型的胚胎发生型愈伤组织,胚状体分化率高;而黄褐色、较松散、团块状的愈伤组织(D)无形态发生能力。器官原基起源于愈伤组织中具单极性的分生细胞团。芽的发生多为外起源,亦有内起源;根的发生多为内起源,亦有外起源。

STUDIES ON THE MORPHOGENETIC CAPACITY OF CALLUS AND ORGANOGENESIS IN ASPARAGUS OFFICINALIS L.

Four types of callus in Asparagus officinalis L. were observed, The light green, compact and tubercular callus was a typical callus of organogenesis. The light yellow, friable and granular callus was a typical callus of embryogenesis. The organ primordia derived from the meristematic cellular masses with monopolarity. Generally, the bud primordia originated exogenously and the root primordia produced endogenously.