JIA Shuang-shuang
College of Agriculture, Anhui Science and Technology University, Fengyang 233100, Anhui, ChinaLIU Guo-xiang
College of Agriculture, Anhui Science and Technology University, Fengyang 233100, Anhui, ChinaZHU Shuai-kang
College of Agriculture, Anhui Science and Technology University, Fengyang 233100, Anhui, ChinaGAO Qing-hai
College of Agriculture, Anhui Science and Technology University, Fengyang 233100, Anhui, ChinaZHANG Xue-ping
College of Agriculture, Anhui Science and Technology University, Fengyang 233100, Anhui, ChinaZHOU Yu-li
College of Agriculture, Anhui Science and Technology University, Fengyang 233100, Anhui, ChinaIn order to understand the response of Calendula officinalis seedlings to mixed neutral salt stress, the growth and photosynthetic physiology of seedlings was studied under stressed with NaCl∶Na2SO4 at mole ratio of 9∶1. The results showed that the balance of active oxygen metabolism and the integrity of cell membrane structure were maintained by enhancing activities of superoxide dismutase (SOD), peroxidase (POD), catalase (CAT), and decreasing content of malondialdehyde (MDA) in leaves of C. officinalis seedlings under lower than 100 mmol L-1 salt concentration, which could maintain normal photosynthesis and growth of seedlings. When salt concentration was more than 200 mmol L-1, the activities of SOD, POD and CAT decreased rapidly, and content of MDA increased rapidly, which significant influnced on photosynthetic capacity and growth. Therefore, the threshold salinity of C. officinalis seedlings to mixed neutral salt stress was 100 mmol L-1, the seedlings could maintain normal metabolic balance by regulating protective enzyme system.
贾双双,刘国祥,朱帅康,高青海,张雪平,周玉丽.混合中性盐胁迫对金盏菊幼苗生长及光合生理的影响[J].热带亚热带植物学报,2018,26(4):391~398
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