Effects of GA and PAC on the Style Curvature of Alpinia Blepharocalyx
This paper studied the effects of gibberellins(GA)and paclobutrazol(PAC)on the style curvature of ex-cised flower of A lpinia blepharocalyx at the dark and light conditions.The results showed that the first style curva-ture of two morphs(ana-morph and cata-morph)was not significantly affected by GA and PAC whenever in dark or in light.In dark condition,the second style curvature of ana-morph did not happen for CK and PAC treatment,but GA led to significant upward bending.Meanwhile in light condition,the styles of ana-morph all can bend upwardly for CK,GA and PAC treatment,and there was no significant difference among them.The stigma-anther angle(SAA)of cata-morph was significantly higher when styles were put in light than in dark.In dark condition,PAC can en-hanced the second style curvature of cata-morph in dark,but the difference was not significant than CK and GA.In light condition,there was no significant difference among them.These results suggested that GA played a different role in different morph,or in different movement stage of one morph.
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