Comparison of seed germination and early seedling growth responses to salinity and temperature of the halophyte Chloris virgata and the glycophyte Digitaria sanguinalis
Comparison of seed germination and early seedling growth responses to salinity and temperature of the halophyte Chloris virgata and the glycophyte Digitaria sanguinalis
复制标题
盐生植物 Chloris virgata 和糖生植物马唐 (Digitaria sanguinalis) 种子萌发和早期幼苗生长对盐度和温度的响应比较
DOI：
10.1111/gfs.12024
复制
发表时间：
2013-12
影响因子：
2.4
通讯作者：
Zhang H, Zhou D, Tian Y, Huang Y, Sun Z
中科院分区：
文献类型：
--
作者：
Zhang H, Zhou D, Tian Y, Huang Y, Sun Z
盐碱化是中国北方松嫩草地日益严重的土地退化问题。研究了盐度和温度在6种土壤溶液（0、50、100、150、200和250 mm NaCl）和4种温度（15、20、25和30°C）下对盐生植物Chloris virgata和广泛分布的糖生植物Digitaria sanguinalis种子萌发和幼苗生长的影响。两种植物的发芽率和发芽率在高盐度下均显著降低，但未发芽的种子在提供蒸馏水后可恢复萌发。在20°C及以上温度下，两种植物的根长、苗高和总干重均随盐度的增加而呈浓度依赖性降低。然而，在15°C时，不同盐度的盐处理幼苗的下降幅度相似。与对照处理相比，低盐处理似乎促进了野田葵的萌发和幼苗生长。两种植物幼苗期对盐度的敏感性均高于萌发期。松嫩盐碱地马地黄似乎在一定程度上形成了类似盐生植物的适应策略。然而，由于其较高的耐盐性，C. virgata可能仍然在大多数高盐地区占据主导地位。
Salinization is an increasing land degradation issue in the Songnen Grassland of northern China. Effects of salinity and temperature on seed germination and seedling growth of Chloris virgata, a promising halophyte, and Digitaria sanguinalis, a widespread glycophyte were examined in six soil solutions (0, 50, 100, 150, 200 and 250 mm NaCl) and four temperatures (15, 20, 25 and 30°C). Germination percentages and rates of both species decreased significantly at higher salinities, but ungerminated seeds can recover germination upon supply of distilled water. Radicle length, seedling height and the total dry weight of both species generally decreased in a concentration-dependent manner at 20°C and above as the salinity increased. However, at 15°C, the salt-treated seedlings showed decreases with a similar magnitude for different salinities. Low salinities seem to stimulate germination and seedling growth of C. virgata compared with the control treatment. Both species were more sensitive to salinity during the seedling stage than the germination stage. Digitaria sanguinalis from the saline Songnen Grassland region seems to develop a halophyte-like adaptive strategy to some extent. However, C. virgata may still dominate most hyperhaline areas due to its higher salt tolerance.
登录
查看更多内容
影响因子：
--
作者：
Rengasamy, P
通讯作者：
Rengasamy, P
影响因子：
1.8
作者：
S. Redondo;A. Rubio-Casal;J. M. Castillo;C. Luque;A.A Álvarez;T. Luque;M. E. Figueroa
通讯作者：
S. Redondo;A. Rubio-Casal;J. M. Castillo;C. Luque;A.A Álvarez;T. Luque;M. E. Figueroa
影响因子：
1.1
作者：
Saba Zia;M. Khan
通讯作者：
Saba Zia;M. Khan
影响因子：
2.7
作者：
W. Renzhong;E. Ripley
通讯作者：
W. Renzhong;E. Ripley
影响因子：
1.4
作者：
B. Zhang;B. Jacobs;M. O’Donnell;J. Guo
通讯作者：
B. Zhang;B. Jacobs;M. O’Donnell;J. Guo