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| Effects of Short-day Photoperiod Inducement after Early Flowering on Physiological Parameters in Adzuki Bean Leaves |
| DONG Weixin1, YIN Baozhong2, ZHANG Yanli2, ZHANG Yuechen2 |
1. Hebei Radio and TV University, Shijiazhuang 050080, China;
2. College of Agronomy, Hebei Agricultural University, Key Laboratory of Crop Growth Regulation of Hebei Province, Baoding 071001, China |
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Abstract In order to clarify the effects of short-day photoperiod inducement after early flowering on physiological parameters in adzuki bean, medium maturing variety Jihong 9218 and late maturing variety Tangshanhongxiaodou were treated by different short-day photoperiod at Early Flowering-Early Podding (EF-EP), Early Podding-Early Seed (EP-ES)and Early Flowering-Early Seed (EF-ES)three stages, to investigate the effects of short-day photoperiod inducement on physiological parameters in adzuki bean leaves. Short-day photoperiod inducement decreased the chlorophyll content of two adzuki bean varieties, net photosynthetic rate also showed a decreasing trend at the same time.Which leads to decreased the maximum photochemical quantum yield (Fv/Fm);Soluble sugar and soluble protein content of two adzuki bean varieties were decreased by short-day photoperiod inducement after early flowering, and 12 h short-day photoperiod inducement had a greater influence at the EF-ES stage, and then leading to slower carbon and nitrogen metabolism, meanwhile, sucrose synthetase (SS)activity showed a decreasing trend, it was thus clear that the rate of carbon metabolism was related to SS activity, but the activities of sucrose phosphate synthase (SPS)in two varieties were different, sucrose phosphate synthase (SPS)activity of Jihong 9218 increased at three stages compared with CK while Tangshanhongxiaodou decreased, which might be related to the ripening of varieties;glutamic-oxalacetic transaminase (GOT)and glutamic-pyruvic transaminase (GPT)activity were not affected by photoperiod. The induction effect of short-day induction effect after anthesis was weaker than that before anthesis, but it also had a certain control effect, physiological parameter in adzuki bean could be regulated by short-day photoperiod inducement after early flowering, thereby affecting the growth and development of adzuki bean.
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Received: 15 March 2018
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2018, Vol. 33 
