4种钙素调节剂对乙烯诱导的紫花擎天凤梨花芽分化中钙和钙调素含量的影响

摘要

以紫花擎天凤梨(Guzmania‘Amaranth’)为试材,研究了外源乙烯催花条件下4种钙素调节剂对紫花擎天凤梨花芽分化过程中Ca和CaM(钙调素)含量的影响.结果表明:各处理紫花擎天凤梨花芽中Ca和CaM在花芽孕育期积累,在花芽发端期降低.促进剂A23187处理可显著提高总Ca和CaM的含量,提早CaM峰值出现,促进花芽分化:EGTA处理可显著降低Ca和CaM的含量,推迟Ca峰值出现,延缓花芽分化；而TEP、W-7处理也可显著降低Ca和CaM的含量,延缓花芽分化.研究发现,Ca和CaM参与了乙烯诱导的花芽分化过程.%Using Guzmania 'Amaranth' [G. Wittmackii (Andr6) Andre ex MezxG. Lingulala (Linnaeus) Mez] as the materials, the effects of 4 calcium regulators on the floral buds differentiation and contents of Calcium and Calmodulin of Guzmania 'Amaranth' under exogenous ethylene treatments were studied. A23187 treatment enhanced the contents of Ca and CaM of during the flower bud differentiation, and promoted the flower bud differentiation. EGTA treatment reduced the contents of Ca and CaM during the flower bud differentiation, and delayed the accumulation of Ca and CaM, which inhibited the flower bud differentiation. It showed that Ca and CaM maight be involved in the process of ethylene-induced flower bud differentiation.