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| Water-lead interactive stress effect on growth and physiological characteristics of Jatropha curcas L. |
| WANG Weihua1, LEI Longhai1,2, YANG Qiliang1, WU Zhenzhong1 |
| 1.Faculty of Modern Agricultural Engineering, Kunming University of Science and Technology, Kunming, Yunnan 650500, China; 2.The Office of Water and Soil Conservation of Bijie City, Bijie, Guiyang 551700, China |
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Abstract In order to improve the tolerance of Jatropha curcas L. to Pb and its effect on the remediation of contaminated soil and recommend the best water lead combination that does not affect the normal growth, the water lead interaction stress on the influence of growth and physiological characteristics of Jatropha curcas L. was studied.The experiment designed 4 irrigation levels(T1:100%FC, T2:80%FC, T3:60%FC, T4:40%FC),4 soil Pb pollution levels(A:0mg/kg, B:500 mg/kg, C:1 000 mg/kg, D:1 500 mg/kg).The results show that lead water interaction under T2 water stress significantly increased the biomass and repair effect of Jatropha curcas L. Under water lead interaction, the activities of SOD and POD of Jatropha curcas L. were increased first and then decreased. Compared with single water stress and lead stress, SOD and POD activities were increased under the interaction stress.Under the water-lead interaction stress, the cell membrane permeability of Jatropha curcas L. increased, while C and D under the treatment of T2 based on T1 reduced the permeability of cell membrane.Jatropha curcas L. leaf water potential decreased gradually with the increase of water stress when the soil Pb concentration was less than 500 mg/kg, Jatropha curcas L. leaf water potential increased gradually with the increase of water stress, when the soil Pb concentration was more than or equal to 1 000 mg/kg.The appropriate interaction stress can improve the Pb-tolerant stress ability and repair efficiency of Jatropha curcas L.. It provides a theoretical basis for further promoting the practice and promotion in the field of lead contaminated soil of Jatropha curcas L..
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Received: 31 March 2016
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| [1]KANWAL Urooj, ALI Shafaqat, SHAKOOR Muhammad Bilal,et al. EDTA ameliorates phytoextraction of lead and plant growth by reducing morphological and bioche-mical injuries in Brassica napus L. under lead stress[J]. Environ sci pollut res,2014,21(6):9899-9910.[2]SHU Xiao, YIN Liyan, ZHANG Quanfa,et al. Effect of Pb toxicity on leaf growth, antioxidant enzyme activities, and photosynthesis in cuttings and seedlings of Jatropha curcas L.[J]. Environ sci pollut res,2012, 19(3):893-902.[3]王卫华,雷龙海,杨启良,等. 重金属污染土壤植物修复研究进展[J].昆明理工大学学报(自然科学版),2015,40(2):114-122. WANG Weihua, LEI Longhai, YANG Qiliang,et al. Research progress on phytoremediation of soil contaminated by heavy metals[J]. Journal of Kunming University of Science and Technology(natural science edition),2015,40(2):114-122.(in Chinese)[4]PANDEY Vimal Chandra, SINGH Kripal, SINGH Jay Shankar,et al. Jatropha curcas: A potential biofuel plant for sustainable environmental development[J]. Renewable and sustainable energy reviews, 2012,16(5):2870-2883. [5]SHU Xiao, ZHANG Quanfa, WANG Weibo. Lead induced changes in growth and micronutrient uptake of Jatropha curcas L.[J]. Bull environ contam toxicol,2014,93(5):611-617.[6]王卫华, 雷龙海, 张志鹏,等. 氮铅交互作用对小桐子生长及Pb累积的影响[J].排灌机械工程学报, 2015,33(11):977-984. WANG Weihua, LEI Longhai, ZHANG Zhipeng,et al. Effect of nitrogen lead interaction and accumulation of heavy metal Pb on the growth of Jatropha curcas L.[J]. Journal of drainage and irrigation machinery enginee-ring, 2015,33(11):977-984.(in Chinese)[7]邹朋,王进鑫,张青,等. 水分和铅交互作用对紫穗槐苗木光合特性和水分利用效率的影响[J]. 水土保持研究, 2013,20(3):146-154. ZOU Peng, WANG Jinxin, ZHANG Qing, et al. Effects of interactive stress of water and lead on characteristics of photosynthesis and water use efficiency of amorpha fruticosa seedlings[J]. Research of soil and water conservation, 2013,20(3):146-154.(in Chinese)[8]鲍士旦.土壤农化分析[M].北京:中国农业出版社,2000.[9]李合生.植物生理生化实验原理和技术[M].北京:高等教育出版社,2000.[10]李荭荭,贾洋洋,王果. 土壤铅在烟草中的累积特征及其安全临界值[J]. 安全与环境学报,2014,14(2):305-309. LI Honghong, JIA Yangyang, WANG Guo. Accumulative and transmitting features of the soil-laden lead in tobaccos and its safety threshold for the tobacco-gro-wing soils[J]. Journal of safety and environment,2014,14(2):305-309.(in Chinese)[11]周芙蓉. 侧柏和国槐对干旱和铅胁迫的耐性及对铅污染土壤的修复[D].杨凌:西北农林科技大学,2014.[12]邹朋, 王进鑫, 张青, 等. 水分和铅交互胁迫对侧柏幼苗抗氧化酶活性的影响[J]. 干旱区资源与环境, 2013,27(1):125-129. ZHOU Peng, WANG Jinxin, ZHANG Qing, et al. Effects of interactive stress of dought and lead on antioxidant enzyme activity of Platycladus orientalis seedlings[J]. Journal of arid land resources and environment, 2013,27(1):125-129.(in Chinese)[13]张波, 王进鑫, 初江涛,等. 水分和铅胁迫对刺槐苗木叶片生理指标的影响[J]. 西北农林科技大学学报(自然科学版), 2011,39(8):63-68. ZHANG Bo, WANG Jinxin, CHU Jiangtao, et al. Effects of water and Pb stress on leaf physiological cha-racteristics of Robinia pseudoacacia[J]. Journal of Northwest A & F University(Nat Sci Ed), 2011,39(8):63-68.(in Chinese) |
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