[ Objective] The experiment aimed to explore the diapause mechanism of Papilio memnon L. further. [ Method] The colorimetry method was used to detect protein content of non-diapause pupae, diapause pupae and eclosion-...[ Objective] The experiment aimed to explore the diapause mechanism of Papilio memnon L. further. [ Method] The colorimetry method was used to detect protein content of non-diapause pupae, diapause pupae and eclosion-adult from diapause pupae at different developmental stages. [Result] It was showed that the protein content of non-diapause pupae was from 111.768 to 115.030 7 mg/g and the change of protein content during whole pupal stage, while diapause pupae were from 81.218 to 131.623 7 mg/g and the change of protein content was not big from last ten-day period of October to last ten-day pariod of November, however, the content increased from the last ten-day period of November. The protein content of emerging adult was 296.969 3 mg/g. [Conclusion] The change of protein content was related to Papilio memnon at different development stage.展开更多
Magnetic field effects on different plant species have been subject of many studies in the last decade. Magnetic fields are known to induce changes in plant metabolism, growth and productivity. In this study, effect o...Magnetic field effects on different plant species have been subject of many studies in the last decade. Magnetic fields are known to induce changes in plant metabolism, growth and productivity. In this study, effect of magnetic field on date palm weight and water content has been investigated. Seedlings of date palm were treated with two types of magnetic fields in two separate experiments. In the first experiment, seedlings were treated with static magnetic field SMF using electromagnetic circuit set to produce three levels of magnetic field intensities 10, 50 and 100 mT for different durations （0, 30, 60, 120, 180 and 240 min）. In the second experiment seedlings were treated with alternating magnetic field AMF, using magnetic resonance imaging providing 1500 mT for 0, 1, 5, 10 and 15 min. After two months of exposure, plants growth parameters （fresh, dry weights and water content for both leaves and roots） were recorded. The measurements revealed that leaf fresh, dry weight and water content increased significantly in response to SMF treatment. Similarly, roots fresh weight and water content were increased significantly; however roots dry weight increasing were insignificant. In the second experiment, AMF has affected plant growth all parameters were increased significantly. Measurements reached the highest level at 15 min of exposure. This study revealed that magnetic fields affect date palm growth parameters by increasing osmotic pressure and water potential which increase water absorption and enhance flesh weight.展开更多
文摘[ Objective] The experiment aimed to explore the diapause mechanism of Papilio memnon L. further. [ Method] The colorimetry method was used to detect protein content of non-diapause pupae, diapause pupae and eclosion-adult from diapause pupae at different developmental stages. [Result] It was showed that the protein content of non-diapause pupae was from 111.768 to 115.030 7 mg/g and the change of protein content during whole pupal stage, while diapause pupae were from 81.218 to 131.623 7 mg/g and the change of protein content was not big from last ten-day period of October to last ten-day pariod of November, however, the content increased from the last ten-day period of November. The protein content of emerging adult was 296.969 3 mg/g. [Conclusion] The change of protein content was related to Papilio memnon at different development stage.
文摘Magnetic field effects on different plant species have been subject of many studies in the last decade. Magnetic fields are known to induce changes in plant metabolism, growth and productivity. In this study, effect of magnetic field on date palm weight and water content has been investigated. Seedlings of date palm were treated with two types of magnetic fields in two separate experiments. In the first experiment, seedlings were treated with static magnetic field SMF using electromagnetic circuit set to produce three levels of magnetic field intensities 10, 50 and 100 mT for different durations （0, 30, 60, 120, 180 and 240 min）. In the second experiment seedlings were treated with alternating magnetic field AMF, using magnetic resonance imaging providing 1500 mT for 0, 1, 5, 10 and 15 min. After two months of exposure, plants growth parameters （fresh, dry weights and water content for both leaves and roots） were recorded. The measurements revealed that leaf fresh, dry weight and water content increased significantly in response to SMF treatment. Similarly, roots fresh weight and water content were increased significantly; however roots dry weight increasing were insignificant. In the second experiment, AMF has affected plant growth all parameters were increased significantly. Measurements reached the highest level at 15 min of exposure. This study revealed that magnetic fields affect date palm growth parameters by increasing osmotic pressure and water potential which increase water absorption and enhance flesh weight.
