盐胁迫下外源Ca2+对花生生长发育、生理及产量的影响
Effects of exogenous Ca2+ on growth and development, physiology and yield of peanut under salt stress
摘要
Abstract
Huayu 22,one of the peanut (Arachis hypogaea) cultivars,was used as material in this study.Peanuts,which grew under normal conditions and 100 mmol · L-1NaCl stress,were treated with 0,6,12 mmol · L-1Ca(NO3)2 respectively to elucidate the effects of exogenous calcium on peanut salt tolerance.The effects of different Ca2+ concentrations on the physiological indices and yield of peanut during the whole growth period under salt stress were investigated in potted plants,with the aim to provide theoretical basis for the growth and production of peanut in saline soil.The results showed that,under salt stress,the activities of superoxide dismutase (SOD),catalase (CAT),and chlorophyll content increased whereas the MDA content and electrolytes decreased when treated with different concentrations of exogenous calcium.Calcium also improved root activity,biomass,improved agronomic traits,and finally increased peanut yield.Among all the exogenous calcium treatments,the effect of 12 mmol · L-1Ca2+ treatment was the most significant.These results indicated that exogenous calcium could alleviate the salt stress on peanut plants and enhance the yield of pods by enhancing the scavenging ability of active oxygen,maintaining the stability and integrity of cell membrane.关键词
盐胁迫/外源钙/活性氧/产量/农艺性状Key words
salt stress/exogenous Ca2+/reactive oxygen/yield/agronomic characters引用本文复制引用
杨莎,侯林琳,郭峰,张佳蕾,耿耘,孟静静,李新国,万书波..盐胁迫下外源Ca2+对花生生长发育、生理及产量的影响[J].应用生态学报,2017,28(3):894-900,7.基金项目
本文由国家自然科学基金项目(31571581,31571605)、国家科技支撑计划项目(2014BAD11B04)、山东省自然科学基金项目(ZR2015YL077,BS2015SW020)、山东省农业科学院科技创新重点项目(2014CXZ06-6)、现代农业产业技术体系建设专项资金项目(CARS-14)和山东省农业科学院青年科研基金项目(2014QNM38,2015YQN02)资助 This work was supported by the National Natural Science Foundation of China (31571581,31571605),the Supporting Plan of National Science and Technology of China(2014BAD11B04),the Natural Science Foundation of Shandong Province (ZR2015YL077,BS2015SW020),Major Projects of Science and Technology Innovation in Shandong Academy of Agricultural Sciences (2014CXZ06-6),the Earmarked Fund for Modern Agro-industry Technology Research System(CARS-14),and the Youth Scientific Research Foundation of Shandong Academy of Agricultural Sciences (2014QNM38,2015YQN02). （31571581,31571605）
