Abstract: In order to clarified the effects of short day photoperiod on growth,photosythesis and chlorophyll fluorescence parameters of Adzuki beans.Phenotypic traits,parameters of flowering,photosynthesis and chlorophyll fluorescence were measured under the treatment of short-day photoperiod at different growth stages.The results showed that short-day photoperiod inducement resulted in the decrease of plant height,stem diameters,node number of main stem,internode length of Baihong 2 hao is longer and Tangshanhongxiaodou is shorter at flowering and podding stage.Flowering time earlier and the flower node reduced by short-day photoperiod inducement.Net photosynthetic rate increased significantly at flowering stage and decreased at podding stage,stomatal conductance,concentration of intercellular CO₂ and transpiration rate have no obvious change at flowering stage,but Baihong 2 hao decreased dramaticly and Tangshanhongxiaodou increased at podding stage.Chlorophyll content was not affected by short-day photoperiod inducement at flowering stage,but decreased obviously at podding stage,meanwhile,Fv/Fm of Baihong 2 hao increased at flowering and podding stage,Tangshanhongxiaodou has no significant change at flowering stage but increased at podding stage.A decreasing trend of yield components and yield under the treatment of short-day photoperiod.These results suggested that short-day photoperiod inducement have regulatory role on growth development,photosynthetic parameters and yield of Adzuki beans at flowering and podding stage.

Key words: Adzuki bean, Short-day photoperiod, Flowering characteristics, Photosynthesis, Chlorophyll fluorescence

CLC Number: 

• S521.01