黄腐酸、硝酸钙及其复配浸种对盐胁迫下青稞种子萌发的影响

Effects of Fulvic Acid and Calcium Nitrate Andthe Combined Treatmenton the Seed Germination of Hulless Barley under Salt Stress

摘要

摘要:分别用100 mg/L黄腐酸(Fulvic Acid, FA)、4500mg/L硝酸钙(Ca(NO ₃) ₂及其复配后浸种,并以200 mmol/L氯化钠(NaCl)对青稞种子进行胁迫处理,研究FA、Ca ²⁺及其复配浸种对盐胁迫下青稞种子萌发的影响.结果表明,盐胁迫下青稞种子的萌发和幼苗的生长受到了明显抑制; 用黄腐酸、硝酸钙及其复配浸种能显著提高NaCl胁迫下青稞种子萌发率、萌发势、萌发指数、活力指数和幼苗的根数、株高、根长、地上鲜质量、地上

Abstract:Effects of fulvic acid and Ca ²⁺and their complex treatment on seed germination were investigated under 200mmol/L NaCl stress after treating the seeds of hulless barley in solution of 100 mg/L fulvic acid(FA), and 4500 mg/L calcium nitrate Ca(NO ₃) ₂. The results show that salt stress could remarkably inhibit the germination and growth of hulless barley seedlings; and fulvic acid, Ca(NO ₃) ₂and their complex solution treatment could observably increase the germination rate, germination vigor, germination index, vitality index and the number of seedlings, plant height, root length, fresh mass of shoot, dry mass of shoot, fresh mass of root, dry mass of root of hulless barley, of which fulvic acid and calcium nitrate complex treatment has the best effect, indicating that the fulvic acid, Ca(NO ₃) ₂and their complex solution could enhance the ability of hulless barley seed to resist salt stress.