Preliminary Study on Callus Differentiation of Hermaphrodite Papaya

两性株番木瓜愈伤组织分化初探（英文）

With calluses of hermaphrodite papaya as the tested material and MS as the basic medium, the effects of different plant growth regulators and their combinations on adventitious bud induction of calluses and rooting induction of sterile buds were investigated. The results showed that 6-BA and TDZ all showed certain induction effect on callus differentiation of papaya; the induction effect of 6-BA was better than that of TDZ, and the optimum concentration of 6-BA was 0.05 mg/L. GA3 could promote the induction effect of 6-BA for on callus differentiation. The optimum medium combination for inducing the callus differentiation of papaya was MS ＋ 6- BA 0.5 mg/L ＋ GA3 1.0 mg/L. Compared to NAA, IBA was more suitable for inducing the rooting of adventitious buds. The optimum rooting-induction medium combination was MS ＋ IBA 0.3 mg/L.

以番木瓜两性株的愈伤组织为材料,以MS为基本培养基,研究了不同植物生长调节剂及组合对愈伤组织诱导不定芽和无菌芽诱导生根的影响。结果表明,6-BA和TDZ对番木瓜愈伤组织分化都有一定的诱导作用,而6-BA的作用优于TDZ,最适浓度0.05mg/L。GA_3具有促进6-BA诱导愈伤组织分化的作用,诱导番木瓜愈伤组织分化出芽的最佳培养基为MS+6-BA 0.5 mg/L+GA 31.0 mg/L。相对NAA而言,IBA更适于诱导不定芽生根,生根培养基以MS+IBA 0.3 mg/L为宜。