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邻苯二甲酸二丁酯对西瓜光合作用及枯萎病的影响

作  者:
黄业昌;孙吉庆;陈勇兵
单  位:
温州科技职业学院基地建设与管理中心;中国种子集团有限公司生命科学技术中心
关键词:
西瓜;枯萎病;邻苯二甲酸二丁酯;光合作用
摘  要:
以"京欣四号"西瓜为试材,在温室栽培条件下,设置不同浓度的邻苯二甲酸二丁酯进行处理,探讨其对西瓜苗光合作用及枯萎病的影响。结果表明:浓度为1.0mL·L~(-1)的邻苯二甲酸二丁酯在促进西瓜植株生长,提高净光合速率(Pn)、蒸腾速率(Tr),增加胞间二氧化碳浓度(Ci)和气孔导度(Gs)的同时,能够有效降低西瓜枯萎病的发病率和病情指数,防效达到37.5%;当邻苯二甲酸二丁酯浓度为2.0mL·L~(-1)时,其对西瓜植株的生长和净光合速率(Pn)、蒸腾速率(Tr)、胞间二氧化碳浓度(Ci)和气孔导度(Gs)呈抑制作用,且对西瓜枯萎病的抑制作用减弱,防效仅为9.4%。因此,在生产中,合理利用邻苯二甲酸二丁酯会对预防、抑制西瓜枯萎病的发生产生积极的作用。
译  名:
Effects of Dibutyl Phthalate on Photosynthesis and Fusarium Wilt of Watermelon
作  者:
HUANG Yechang;SUN Jiqing;CHEN Yongbing;Center of Base Construction and Management,Wenzhou Vocational and Technical College;Life Science and Technology Center,China National Seed Group Co.Ltd.;
关键词:
watermelon;;Fusarium wilt;;dibutyl phthalate;;photosynthesis
摘  要:
‘Jingxin No.4' watermelon was used as test material.The effect of dibutyl phthalate on photosynthesis and Fusarium wilt of watermelon was studied under greenhouse conditions.The results showed that 1.0mL·L~(-1) dibutyl phthalate had notable impact on promoting growth,net photosynthetic rate,transpiration rate,intercellular CO_2 concentration and stomatal conductance,it also could reduce the incidence of watermelon wilt disease index and had good control effects(37.5%).When the concentration was up to 2.0 mL·L~(-1),the growth net photosynthetic rate,transpiration rate,intercellular CO_2 concentration and stomatal conductance of watermelon seedlings largely decreased.In addition,2.0 mL·L~(-1) dibutyl phthalate had little positive efficacy(9.4%)on inhibition of Fusarium wilt.There would be a positive effect on prevention the watermelon Fusarium wilt to use dibutyl phthalate appropriately in production of watermelon.

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