HUANG Yechang,SUN Jiqing,CHEN Yongbing.Effects of Dibutyl Phthalate on Photosynthesis and Fusarium Wilt of Watermelon[J].Northern Horticulture,2017,41(04):111-115.[doi:10.11937/bfyy.201704026]
邻苯二甲酸二丁酯对西瓜光合作用及枯萎病的影响
- Title:
- Effects of Dibutyl Phthalate on Photosynthesis and Fusarium Wilt of Watermelon
- Keywords:
- watermelon; Fusarium wilt; dibutyl phthalate; photosynthesis
- 文献标志码:
- A
- 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1.0 mL?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2.0 mL?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。
- Abstract:
- ‘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 1.0 mL?L-1 dibutyl phthalate had notable impact on promoting growth，net photosynthetic rate，transpiration rate，intercellular CO2 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 CO2 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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备注/Memo
第一作者简介：黄业昌（1987-），男，硕士，研究实习员，现主要从事作物栽培管理等研究工作。E-mail：huang670745709@163.com.责任作者：陈勇兵(1972-)，男，本科，教授，现主要从事设施农业技术与农作物病虫害综合防治等研究工作。E-mail：cyb@china.com.