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《Journal of Nuclear Agricultural Sciences》 2017-01
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Effects of Ethephon on Mature-acceleration,Yield and Quality of Interplanting Rapeseed in Rice

ZHENG Wei;XIAO Guobin;XIAO Xiaojun;LI Yazhen;CHEN Ming;LIU Xiaosan;HUANG Tianbao;WU Yan;YE Chuan;ZHU Changlan;Southern Regional Collaborative Innovation Center for Grain and Oil Crops in China/Key Laboratory of Crop Physiology,Ecology and Genetic Breeding,Ministry of Education/College of Agronomy,Jiangxi Agricultural University;Scientific Observational and Experimental Station of Arable Land Conservation in Jiangxi,Ministry of Agriculture/National Engineering and Technology Research Center for Red Soil Improvement/Jiangxi Institute of Red Soil;  
In order to achieve maturity conformance of rape siliques and simultaneously mechanic harvesting and threshing interplanting rape in double cropping rice,40% ethephon was employed for evaluation of mature-acceleration,with four dosage gradients( 0,3000,4 500 and 6 000 m L·hm- 2) and three spraying stages( April 20 th,April 22 nd and April 24th),mature-acceleration,yield and quality were investigated. The results indicated that higher dosage and earlier spaying of ethephon could result in faster color reverse and obvious dehydration of silique,as well as apparent declining of 1000-grain weight and yield. In the respect of rapeseed quality,the content of protein,linoleic acid and saturated fatty acid increased gradually,whereas the contents of oil,oleic acid,linolenic acid,palmitic acid,stearic acid and arachidonic acid displayed a decline trend. From the aspect of easy machinery harvest,ethephon was employed for accelerating maturity of rapeseed siliques with no obvious yield decreasing occurred,and the optimized content has determined as 3000 m L·ha- 2of 40% ethephon and sprayed at 6 to 8 days or 4 500 m L·hm- 1at 4 to 6 days before maturity. These results provide practical references for acceleration of maturation with ethephon in rapeseed.
【Fund】: 江西省重大科技支撑计划项目(20143ACF60009);; 江西省科研院所基础设施配套项目(20142BBA13036);; 国家公益性行业(农业)科研专项(201503123)
【CateGory Index】: S565.4
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