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温光盐对哈德半盘藻细胞分裂的影响 被引量:1
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作者 林均民 薛瑾 《厦门大学学报(自然科学版)》 CAS CSCD 北大核心 1993年第5期659-663,共5页
哈德半盘藻,培养种群在光暗周期中细胞分裂呈现每天三次繁殖峰的模式,细胞分裂受光、温因子的影响,光强度和光周期能够制约细胞的分裂频率和分裂的定时,而温度仅影响分裂频率。
关键词 哈德半盘藻 细胞分裂 温光盐
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亚适宜温光盐环境下油菜素内酯对黄瓜幼苗抗氧化系统及光合作用的影响 被引量:22
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作者 吴秀 陆晓民 《应用生态学报》 CAS CSCD 北大核心 2015年第9期2751-2757,共7页
研究了24-表油菜素内酯(EBR)对亚适宜温光盐环境下黄瓜幼苗抗氧化系统及光合作用的影响.结果表明:与对照相比,亚适宜温光盐环境下黄瓜幼苗叶片H2O2含量增加,膜脂过氧化程度加剧,膜透性增强,净光合速率(Pn)、气孔导度(gs)、胞间CO2浓度(... 研究了24-表油菜素内酯(EBR)对亚适宜温光盐环境下黄瓜幼苗抗氧化系统及光合作用的影响.结果表明:与对照相比,亚适宜温光盐环境下黄瓜幼苗叶片H2O2含量增加,膜脂过氧化程度加剧,膜透性增强,净光合速率(Pn)、气孔导度(gs)、胞间CO2浓度(Ci)和蒸腾速率(Tr)分别显著下降39.3%、40.0%、21.2%和47.2%,幼苗干物质积累减少35.9%.外源喷施EBR可提高亚适宜温光盐环境下黄瓜幼苗的抗氧化酶活性,降低H2O2含量及膜透性,缓解亚适宜温光盐环境下Pn、gs、Tr的下降幅度,幼苗干物质积累增加25.9%,生长加快.EBR可通过调节亚适宜温光盐环境下黄瓜幼苗抗氧化性,减少其膜脂过氧化程度,进而维持其较高的光合性能,有效促进了亚适宜温光盐环境下黄瓜幼苗的生长. 展开更多
关键词 油菜素内酯 黄瓜 亚适宜温光盐环境 抗氧化系统 光合作用
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油菜素内酯对亚适宜温光盐环境下黄瓜幼苗根系生长及其AsA-GSH循环的影响 被引量:2
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作者 吴秀 陆晓民 《生态学杂志》 CAS CSCD 北大核心 2015年第8期2149-2154,共6页
以‘津春2号’黄瓜幼苗为试材,研究了24-表油菜素内酯(EBR)对亚适宜温光盐环境下黄瓜幼苗根系生长及其抗坏血酸-谷胱甘肽(As A-GSH)循环系统的影响。结果表明:亚适宜温光盐环境导致黄瓜幼苗根系的超氧阴离子(O2-·)产生速率及过氧化... 以‘津春2号’黄瓜幼苗为试材,研究了24-表油菜素内酯(EBR)对亚适宜温光盐环境下黄瓜幼苗根系生长及其抗坏血酸-谷胱甘肽(As A-GSH)循环系统的影响。结果表明:亚适宜温光盐环境导致黄瓜幼苗根系的超氧阴离子(O2-·)产生速率及过氧化氢(H2O2)、丙二醛(MDA)含量增加,膜脂过氧化程度加剧,幼苗根系生长显著受抑;EBR能通过提高亚适宜温光盐环境下黄瓜幼苗根系的抗坏血酸过氧化物酶(APX)、谷胱甘肽还原酶(GR)、脱氢抗坏血酸还原酶(DHAR)等抗氧化酶比活性、抗氧化剂(As A、GSH)含量以及还原型谷胱甘肽与氧化型谷胱甘肽含量比值(GSH/GSSH)和还原型抗坏血酸与氧化型抗坏血酸比值(As A/DHA),促进亚适宜温光盐环境下黄瓜幼苗根系体内As A-GSH循环运转,维持较强的抗氧化性能,显著降低了O2-·产生速率及H2O2、MDA含量,减少膜脂过氧化程度,从而促进了亚适宜温光盐环境下黄瓜幼苗根系的生长。 展开更多
关键词 油菜素内酯 黄瓜幼苗 亚适宜温光盐环境 根系 AsA-GSH循环
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Temperature and Salinity Dual-parameter Sensing Based on Forward Brillouin Scattering in 1060-XP SMF
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作者 LIU Pengkai ZHANG Wujun LU Yuangang 《Transactions of Nanjing University of Aeronautics and Astronautics》 EI CSCD 2024年第S01期89-95,共7页
A novel temperature and salinity discriminative sensing method based on forward Brillouin scattering(FBS)in 1060-XP single-mode fiber(SMF)is proposed.The measured frequency shifts corresponding to different radial aco... A novel temperature and salinity discriminative sensing method based on forward Brillouin scattering(FBS)in 1060-XP single-mode fiber(SMF)is proposed.The measured frequency shifts corresponding to different radial acoustic modes in 1060-XP SMF show different sensitivities to temperature and salinity.Based on the new phenomenon that different radial acoustic modes have different frequency shift-temperature and frequency shift-salinity coefficients,we propose a novel method for simultaneously measuring temperature and salinity by measuring the frequency shift changes of two FBS scattering peaks.In a proof-of-concept experiment,the temperature and salinity measurement errors are 0.12℃and 0.29%,respectively.The proposed method for simultaneously measuring temperature and salinity has the potential applications such as ocean surveying,food manufacturing and pharmaceutical engineering. 展开更多
关键词 forward Brillouin scattering(FBS) optical fiber sensor salinity sensing temperature sensing
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Breeding and Application of Indica PTGMS Line Yan 161S and Its Hybrid Yanliangyou 1618 in Rice
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作者 孙明法 严国红 +12 位作者 唐红生 王爱民 朱国永 何冲霄 任仲玲 刘凯 张桂云 施伟 万林生 孙红芹 倪正斌 单忠德 姚立生 《Agricultural Science & Technology》 CAS 2015年第6期1140-1143,共4页
In 2006, the indica photoperiod- and thermo-sensitive genic male sterile (PTGMS) line Yan 161S was successful y bred by crossing the Guangzhan 63S (♀) and the medium indica breeding material Yan 229 (♂), which... In 2006, the indica photoperiod- and thermo-sensitive genic male sterile (PTGMS) line Yan 161S was successful y bred by crossing the Guangzhan 63S (♀) and the medium indica breeding material Yan 229 (♂), which was bred by the Institute of Agricultural Sciences in Coastal Region of Jiangsu Province, after years' and generations’ selection in different areas. It passed the identification by Jiangsu Provincial Crop Variety Appraisal Committee in 2013. Crossing the Yan 161S with Yanhui 888, a new high-yielding and high-quality two-line hybrid rice combination Yanliangyou 1618 was developed, and it passed the variety identification in 2014. This paper introduced the breeding processes and characteristics of Yan 161S and Yanliangyou 1618 and the cultivation and seed production techniques of Yanliangyou 1618. 展开更多
关键词 161S Two-line hybrid rice PTGMS line Yan 161S BREEDING
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Breeding and Application of Indica PTGMS Line Yan 220S in Rice
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作者 孙明法 严国红 +10 位作者 唐红生 王爱民 朱国永 何冲霄 任仲玲 刘凯 张桂云 施伟 赵绍路 孙一标 姚立生 《Agricultural Science & Technology》 CAS 2017年第8期1410-1412,共3页
Yan 220S, which is derived from a natural variant plant discovered among the population of Guangzhan 63S and developed by Jiangsu Agricultural Research Institute for Coastal Regions through pedigree selection over yea... Yan 220S, which is derived from a natural variant plant discovered among the population of Guangzhan 63S and developed by Jiangsu Agricultural Research Institute for Coastal Regions through pedigree selection over years, is an indica photo- and thermo-sensitive genic male sterile (PTGMS) line in rice. In 2013, it was technically identified by Jiangsu Crop Variety Appraisal Committee. Its hybrid Yan-liangyou 2208 (Yan 220S/Yanhui 888), a new two-line hybrid rice combination with high yield and good grain quality, was subsequently developed and released for commercial production by the National Crop Variety Appraisal Committee in 2013. 展开更多
关键词 Hybrid rice PTGMS line Yan 220S BREEDING
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COMBINED EFFECTS OF TEMPERATURE, IRRADIANCE AND SALINITY ON GROWTH OF DIATOM SKELETONEMA COSTATUM 被引量:6
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作者 颜天 周名江 钱培元 《Chinese Journal of Oceanology and Limnology》 SCIE CAS CSCD 2002年第3期237-243,共7页
factor experiment was used to study the combined effects of temperature, irradiance and salinity on the growth of an HAB species diatom Skeletonema costatum (Grev.) Cleve. The results showed that temperature (12, 19, ... factor experiment was used to study the combined effects of temperature, irradiance and salinity on the growth of an HAB species diatom Skeletonema costatum (Grev.) Cleve. The results showed that temperature (12, 19, 25, 32℃), irradiance ((0.02, 0.08, 0.3, 1.6)×10 16 quanta/(s·cm 2)) and salinity (10, 18, 25, 30, 35) significantly influenced the growth of this species. There were interactive effects between any two of and among all three physical factors on the growth. In the experiment, the most optimal growth condition for S. costatum was temparature of 25℃, salinity of 18-35 and irradiance of 1.6×10 16 quanta/(s·cm 2). The results indicated S. costatum could divide at higher rate and were more likely to bloom under high temperature and high illumination from spring to fall. It was able to distribute widely in ocean and estuary due to its adaptation to a wide range of salinities. 展开更多
关键词 Skeletonema costatum harmful algal bloom TEMPERATURE IRRADIANCE SALINITY
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Effects of temperature, salinity, and irradiance on the growth of harmful algal bloom species Phaeocystis globosa Scherffel(Prymnesiophyceae) isolated from the South China Sea 被引量:11
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作者 徐宁 黄博珠 +3 位作者 胡章喜 唐赢中 段舜山 张成武 《Chinese Journal of Oceanology and Limnology》 SCIE CAS CSCD 2017年第3期557-565,共9页
Blooms of Phaeocystis globosa have been frequently reported in Chinese coastal waters, causing serious damage to marine ecosystems. To better understand the ecological characteristics of P. globosa in Chinese coastal ... Blooms of Phaeocystis globosa have been frequently reported in Chinese coastal waters, causing serious damage to marine ecosystems. To better understand the ecological characteristics of P. globosa in Chinese coastal waters that facilitate its rapid expansion, the effects of temperature, salinity and irradiance on the growth of P. globosa from the South China Sea were examined in the laboratory. The saturating irradiance for the growth ofP. globosa (Is) was 60 μmol/(m^2·s), which was lower than those of other harmful algal species (70-114μmol/(m^2·s)). A moderate growth rate of 0.22/d was observed at 2 μmol/(m^2·s) (the minimum irradiance in the experiment), and photo-inhibition did not occur at 230 μmol/(m^2·s) (the maximum irradiance in the experiment). Exposed to 42 different combinations of temperatures (10- 31 ℃) and salinities (10-40) under saturating irradiance, P. globosa exhibited its maximum specific growth rate of 0.80/d at the combinations of 24℃ and 35, and 27℃ and 40. The optimum growth rates (〉0.80/d) were observed at temperatures ranging from 24 to 27℃ and salinities from 35 to 40. While P. globosa was able to grow well at temperatures from 20℃ to 31℃ and salinities from 20 to 40, it could not grow at temperatures lower than 15℃ or salinities lower than 15. Factorial analysis revealed that temperature and salinity has similar influences on the growth of this species. This strain ofP. globosa not only prefers higher temperatures and higher salinity, but also possesses a flexible nutrient competing strategy, adapted to lower irradiance. Therefore, the P. globosa population from South China Sea should belong to a new ecotype. There is also a potentially high risk of blooms developing in this area throughout the year. 展开更多
关键词 Phaeocystis globosa harmful algal bloom TEMPERATURE SALINITY IRRADIANCE GROWTH
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Tomato Leaf Photosynthetic Responses to Humidity andTemperature Under Salinity and Water Deficit 被引量:12
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作者 H.L.XU L.GAUTHIER 《Pedosphere》 SCIE CAS CSCD 1999年第2期105-112,共8页
Greenhouse tomato plants (Lycopersicon esculentum Mill cv. Capello) were grown on peat-based substrate and treated with high (4.5 mS cm-1) and low (2.3 mS cm-1) nutrient solution electric conductivity(EC) under high a... Greenhouse tomato plants (Lycopersicon esculentum Mill cv. Capello) were grown on peat-based substrate and treated with high (4.5 mS cm-1) and low (2.3 mS cm-1) nutrient solution electric conductivity(EC) under high and low substrate water contents. FOur weeks after the beginning of the treatments, photosynthesis (Th) was measured under different humidity and temperatures to examine the interactive effectswith rhizosphere salinity and water deficit. A rectangular hyperbolic model fitted the light-photosynthesiscurve. Photosynthetic capacity (PC) was decreased but quantum yield (YQ) was increased by rhizospheresalinity caused by high EC. PN was decreased by low humidity only in high EC- and/or water-stressed plants.Under high photosynthetic photon flux (PPF), low humidity induced PC decline in water-stressed plants andPN oscillation in high-EC-treated plants. PN increased steadily as the leaf temperature changed from 18 Cto 23 and then decreased steadily from 23 to 38 . At 34 , PN decreased significantly in waterstressed plants. Dark respiration (RD) increased in an exponential manner as the leaf temperature changedfrom 18 to 38 to an extent about ten times higher under 38 than under 18 . Our data suggestedthat PN decrease under high temperature was attributed, st least in part, to the increased RD. RD in highEC- and/or water-stressed plants was higher than that in the plants of control under lower temperature butlower than that in the plants of control under high temperature. The analysis of stomatal and mesophyllconductance showed that low humidity effect was mainly through stomatal response while temperature effectwas mainly through biochemical functions. The result showed that environmental stresses affected PN in anadditive or synergistic manner. 展开更多
关键词 humidity PHOTOSYNTHESIS rhizosphere salinity TEMPERATURE water stress
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PC Based Optical Salinity Sensor for Different Temperatures 被引量:1
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作者 Savarimuthu ROBINSON Rangaswamy NAKKEERAN 《Photonic Sensors》 SCIE EI CAS 2012年第2期187-192,共6页
Abstract: The homogeneous, intensity modulated salinity sensor using the photonic crystal ring resonator (PCRR) is proposed and designed for monitoring the salinity of the seawater from 0% to 100% (0 g/L to 100 g/... Abstract: The homogeneous, intensity modulated salinity sensor using the photonic crystal ring resonator (PCRR) is proposed and designed for monitoring the salinity of the seawater from 0% to 100% (0 g/L to 100 g/L) at 25℃. The concentration of the salinity in the seawater changes the refractive index of the seawater. The change in the refractive index of the seawater brings the change in the output signal intensity of the sensor as the output power and mapping the salinity level, the seawater flows inside the sensor. By detecting the salinity can be evaluated. The proposed sensor is composed of periodic Si rods embedded in an air host with a circular PCRR placed between the inline quasi waveguides. Approximately, 2.69% of output power reduction is observed for every 5% (5 g/L) increase in the salinity as the seawater has a unique refractive index for each salt level. With this underlying principle, the performance of the sensor is analyzed for different temperatures. 展开更多
关键词 Optical sensor salinity measurement photonic crystal refractive index
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Two-dimensional Modeling of a Salt-gradient Solar Pond with Wall Shading Effect and Thermo-physical Properties Dependent on Temperature and Concentration 被引量:1
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作者 Mohsen Mazidi Mohammad Hassan Shojaeefard +1 位作者 Mohammad Sh.Mazidi Hossein Shojaeefard 《Journal of Thermal Science》 SCIE EI CAS CSCD 2011年第4期362-370,共9页
In this paper,the behavior of a salt-gradient solar pond with the square cross-section has been studied experimentally and numerically.A small-scale solar pond were designed and built to provide quantitative data.A tw... In this paper,the behavior of a salt-gradient solar pond with the square cross-section has been studied experimentally and numerically.A small-scale solar pond were designed and built to provide quantitative data.A two-dimensional,transient heat and mass transfer model has been solved numerically by using finite-control-volume method.In this study,all the thermo-physical properties are variable as the function of temperature and salt concentration.Numerical results as obtained for the experimental pond have been satisfactorily compared and validated against measured data.Furthermore,the wall shading effect has been elaborated to improve the agreement between two sets of results.The temperature of the storage zone is predicted well by the model.It also can be observed that the initial concentration profile is preserved with time.The stability of the pond in time has been investigated in order to distinguish the critical zones.Finally,the application of an energy analysis gives an efficiency of about 12%for the pond. 展开更多
关键词 solar energy salt-gradient solar pond transient heat and mass transfer temperature and concentration profiles stability thermal efficiency
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