土壤学报2011，Vol.48Issue(5)：1044-1050,7.
硝普钠对NaCI胁迫下长春花幼苗光合及生物碱的影响
EFFECTS OF SNP ON PHOTOSYNTHESIS AND ALKALOID CONTENT OF CATHARANTHUS ROSEUS SEEDLINGS UNDER NaCl STRESS
摘要
Abstract
A sand culture experiment was conducted in greenhouse to study the effects of exogenous nitric oxide donor(SNP) on growth, photosynthetic characteristics and alkaloids contents of Catharanthus roseus seedlings under 50 mmol L"1 NaCl stress. The results show: ( 1 ) 0. 1 mmol L~' SNP was the highest in effect of alleviating the stress caused by 50 mmol L "' NaCl, and significantly increased fresh weight, dry weight, Pn, Gs, Tr and POD activity by 18. 8% , 13. 9% , 20. 7% , 19. 1% , 8. 5% and 32. 6% respectively, but decreased Ci by 10. 3% as against Treatment Sj (50 mmol L" NaCl). (2) In Treatment S4 , where the concentration of SNP increased to 0. 5 mmol L"1, the TDC activity, total indole alkaloids, Vinblastine, Catharanthine, Vincristine and Vindolin contents of the Catharanthus roseus were the highest, compared with Treatment S, , they increased 33.4%, 26.9%, 32. 3% , 27. 4% , 68. 8% and 50. 2% respectively. To sum up, 0. 1 mmol L~'SNP is the best at increasing photosynthesis , promoting growth and raising biomass, however 0. 5 mmol L "' SNP is the best at improving synthesis of total indole alkaloids and four main kinds of alkaloids.关键词
一氧化氮/NaCl胁迫/长春花/光合作用/生物碱Key words
Nitric oxide/ NaCl stress/ Catharanthus roseus/ Photosynthsis/ Alkaloid分类
农业科技引用本文复制引用
胡凡波,隆小华,刘玲,刘兆普..硝普钠对NaCI胁迫下长春花幼苗光合及生物碱的影响[J].土壤学报,2011,48(5):1044-1050,7.基金项目
国家科技支撑项目(2011 BAD13B09)和公益性行业(农业)科研专项经费项目(200903001-05)资助 （2011 BAD13B09）
