期刊
RUSSIAN JOURNAL OF PLANT PHYSIOLOGY
卷 51, 期 2, 页码 203-208出版社
MAIK NAUKA/INTERPERIODICA
DOI: 10.1023/B:RUPP.0000019215.20500.6e
关键词
Triticum aestivum; Triticum durum; carbohydrates; drought; phenolics; praline; protein; salt stress; waterlogging
The effects of environmental stress combinations on the soluble metabolites were investigated in several cultivars of Triticum aestivum and T durum. The seedlings grown at optimum (24/16degreesC), low (5/-5degreesC) (LT), and high (40/30degreesC) (HT) day/night temperature conditions were exposed to waterlogging, drought, and salinity (0.7% NaCl, w/w) stresses for six days. Root and shoot fresh weight significantly decreased under waterlogging, drought and salt stresses. Fresh weight was most reduced at severe drought + HT combinations. The lowest relative water content was found under drought stress + HT combination. Soluble carbohydrate (SC) contents increased under LT conditions, but decreased under HT conditions. Under HT + salt combinations, T aestivum genotypes showed higher SC content than T durum genotypes. Proline content significantly increased in the case of water deficit and salt stress. Under drought and salt stresses, T aestivum genotypes had lower proline contents than T durum genotypes. These results indicate that biochemical responses to drought, waterlogging, and salt stresses were significantly changed in wheat seedlings under LT and HT conditions.
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