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研究Na Cl处理下耐盐性不同基因型甘薯植株K~+、Na~+和Cl~-含量及生长情况,以探讨不同器官K~+、Na~+和Cl~-含量变化对植株生长的影响,为耐盐材料的鉴定及耐盐机理的研究提供依据。以商薯19(CK)和EMS诱变创新材料T06、T11为试验材料,分析Na Cl胁迫处理下,甘薯植株根、茎、叶K~+、Na~+和Cl~-含量变化及其与生长的关系。随着Na Cl处理时间的延长,CK、T06、T11根、茎、叶干重的增长速率和K~+/Na~+值均降低,Na~+、K~+、和Cl~-含量逐渐增加,但是T06和T11较CK保持较高的干重增长速率、K~+含量、K~+/Na~+值,较低的Na~+和Cl~-含量;甘薯植株干重与Na~+和Cl~-含量呈显著或极显著负相关,而与K~+含量呈显著正相关。因此,耐盐性好的甘薯基因型,在Na Cl处理后可保持较高的生长速率,根、茎、叶较低的Na~+和Cl~-含量,较高的K~+/Na~+值和K~+含量,可为耐盐材料的鉴定提供借鉴。
The content and growth of K ~ +, Na ~ + and Cl ~ - in sweet potato plants with different salt tolerance under NaCl treatment were studied in order to investigate the effects of Na ~ +, Na ~ + and Cl ~ Influence, provide a basis for the identification of salt-tolerant materials and salt tolerance mechanism. The changes of K ~ +, Na ~ + and Cl ~ - contents in roots, stems and leaves of sweet potato under NaCl stress were studied by using commercial potato CK (CK) and EMS mutagenic materials T06 and T11 as materials. The relationship of growth. With the prolongation of NaCl treatment time, the growth rate and K ~ + / Na ~ + of roots, stems and leaves of CK, T06 and T11 decreased, and the content of Na ~ +, K ~ + and Cl ~ - gradually decreased But the contents of K ~ +, K ~ + / Na ~ + and Na ~ + and Cl ~ - of T06 and T11 were higher than those of CK. + And Cl ~ - were significantly or very significantly negatively correlated with K ~ + content was significantly positive correlation. Therefore, the sweet potato genotypes with good salt tolerance maintained high growth rate after NaCl treatment, with lower Na ~ + and Cl ~ - contents in roots, stems and leaves and higher K ~ + / Na ~ + Value and K ~ + content, can provide reference for the identification of salt-tolerant materials.