Abstract
In order to find an appropriate Sodium Silicate (SS) application amount and improve the resistance to salt stress in dry-land wheat. The effects of SS on growth and physiological characteristics under 0.2% salt stress in dry-land wheat seedlings by applying different amounts of SS had been studied in the pots in the artificial climate chamber with the variety wheat Jimai22. The results indicated that, SS can increase root-shoot ratio, aboveground and underground fresh weight under 0.2% salt stress in dry-land wheat seedlings. Meanwhile, SS also could improve Superoxide dismutase (SOD), Peroxidase (POD) activity and reduce Malondialdehyde (MDA) content. In the SS amount range of 0~7.5 kg/667 m^2, the SS application amount of 5 kg/667 m^2 was the best to promote the growth of dry-land wheat seedlings under 0.2% salt stress.
Highlights
Soil salinization has a negative impact on the development of agricultural production
Effects of different application amounts of Sodium Silicate (SS) on aboveground and underground fresh weight under shoot ratio under salt stress in dry-land wheat seedlings salt stress in dry-land wheat seedlings: We can find out from Fig. 1 and 2 that aboveground and underground fresh weight were gradually increasing with the growth of dry-land wheat seedlings
It can be inferred that SS could alleviate salt-stress damage on the growth of dry-land wheat seedlings and make the aboveground and underground fresh weight increase
Summary
Soil salinization has a negative impact on the development of agricultural production. Improving the salt tolerance of plant has become an important issue to research plant stress and an important way to overcome soil salinization. It has been reported that Silicon has an important role in metabolic and physiological changes of plant and it can increase the salt tolerance of soybean (Liyan, 2013). Exogenous Silicon can decrease the content of MDA in leaves of wild type rice and improve the root activity under salt stress (Yizong et al, 2009). Under the condition of salt stress, silicon can enhance perennial ryegrass seedlings’ ability to scavenge reactive oxygen species, protect the photosynthetic mechanism, improve the photosynthetic function and enhance plant salt tolerance by improving the SOD, CAT, POD and APX activity and glutathione (GSH) content
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