We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
碱性盐胁迫对夏蜡梅生长与离子分布的影响.
- Authors
周贝宁; 毛恋; 花壮壮; 芦建国
- Abstract
In this study, the three years old Sinocalycanthus chinensis seedlings were treated with different concentrations of alkaline salts (NaHCO3) solutions, and the response mechanism of Sinocalycanthus chinensis to alkaline salt stress was analyzed from the morphological growth and ion transport routes, so as to provide theoretical guidance for the rational development and utilization of Sinocalycanthus chinensis. The results showed that the seedling height, relative growth of ground diameter, biomass and root-shoot ratio decreased with the increase of saline-alkali stress. With the increase of saline-alkali concentration, the Na+ content in each organ were significantly higher than that in the control group, the sequence was as follows: root>leaf>stem. Under low concentration alkaline salt stress, the K+ content sequence was as follows: stem>root>leaf, while under high concentration stress, the K+ content sequence was as follows: leaf>stem>root. The Ca2+ content sequence was as follows: leaf>root>stem. The K+/Na+ ratio in the stems and leaves of Sinocalycanthus chinensis was much higher than that in the roots and the Ca2+/Na+ ratio in the leaves was much higher than that in the stems and roots. The sequence of root-stem selective transport capacity of K+ and Ca2+: K+>Ca2+, stem-leaf: Ca2+>K+, while the root-leaf selective transport capacity was basically the same.In conclusion,under alkaline salt stress, the stems and leaves of Sinocalycanthus chinensis prevented the entry of Na+ by absorbing K+ and Ca2+, separated the Na+ storage area in the roots to reduce the damage of salt ions to the aboveground part, and the leaves maintained ion balance by increasing the absorption of mineral elements.
- Publication
Acta Agriculturae Zhejiangensis, 2022, Vol 34, Issue 1, p79
- ISSN
1004-1524
- Publication type
Article
- DOI
10.3969/j.issn.1004-1524.2022.01.10