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Studying the physiological and yield responses of sunflower inbred lines to full and limited irrigation

Journal of Integrative Agriculture 2018年第7期17卷 1605-1611页

作者： Nasserghadimi Farshad jahanbakhsh soodabeh Ghaffari Mehdi Ebadi Ali Department of Agronomy and Plant Breeding Faculty of Agriculture University of Mohaghegh Ardabili Ardabil *** Iran Seed and Plant Improvement Institute Agricultural Research Education and Extension Organization (AREEO) Karaj *** Iran

In order to study the physiological and yield responses of sunflower inbred lines to full and limited irrigation, an experiment was conducted in the growing season of 2014–2015 in the research field of the Agricultural Research Station in Khoi, Iran. Water withholding was imposed in the flowering stages from R4 （initial flowering） to R6 （full flowering）. The results showed that the main effect of irrigation and inbred lines and the interaction effect between irrigation and inbred lines in terms of the proline and protein contents, the catalase, peroxidase, and polyphenol oxidase activities, and seed yield in all inbred lines, and relative water content（RWC） were significant at 1% level. Water withholding in the flowering stage increased the proline content and the catalase, peroxidase, and polyphenol oxidase activities, whereas limited irrigation decreased the protein content and seed yield in all inbred lines and RWC. The lowest protein content and the highest catalase, peroxidase, and polyphenol oxidase activities were observed in BGK 39 under limited irrigation condition, while BGK 37 revealed the highest proline content in such circumstances. The highest seed yield was seen in BGK 1 and BGK 375 in full irrigation condition. Limited irrigation increased the proline content by 49.51%, compared to that of full irrigation condition.

关键词： antioxidants catalase peroxidase protein RWC

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