Seedling growth and physiological characteristics of different sweet sorghum genotypes in Takyric Solonetz soils

doi:10.11686/cyxb20140524

Abstract

Abstract:

To explore the response of sweet sorghum seedlings to stress when grown on Takyric Solonetz soils, growth and physiological characteristics of five different sweet sorghum genotypes were studied in a pot trial. Takyric Solonetz inhibited seedling growth of sweet sorghum, and significantly reduced plant height, root length and plant dry weight of sweet sorghum seedlings. The chlorophyll content and photosynthetic rate of different sweet sorghum genotypes were greatly reduced, while the plasma membrane relative permeability, MDA levels and SOD, POD, and CAT activities were significantly increased under stress conditions induced by Takyric Solonetz. There were significant differences in salt or alkalinity tolerance among 5 genotypes of sweet sorghum. Variety ZNH05 showed least tolerance to Takyric Solonetz stress, while ZNH07 and ZNH18 showed stronger resistance to Takyric Solonetz stress.

CLC Number:

S514.06

LIU Ji-li,WU Na. Seedling growth and physiological characteristics of different sweet sorghum genotypes in Takyric Solonetz soils[J]. Acta Prataculturae Sinica, 2014, 23(5): 208-213.

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