Effect of Ethephon on Water Potential and Osmotic Potential in Two Sorghum Cultivars Differing in Drought Resistance

doi:10.3321/j.issn:1000-7091.1989.z1.018

Abstract

Abstract: The effect of ethephon on the water status of a drought resistant and a drought sensitive cultivars of sorghum(Sorghum bicolor(L.) Moench) was investigated. Plants treated with ethephon and plants without ethephon had similar stomatal resistances. Under watered conditions, ethephon lowered, water potential and osmotic.potential of both cultivars; but under water stressed conditions, ethephon increased water potential and osmotic potential of the cultivars. Ethylene release from plants treated with ethephon was much more than that of plants without ethephon.

Key words: Sorghum, Ethephon, Stomatal resistance, Water stress, Water potential, Osmotic potential

Zhang Jingxian, M. B. Kirkham. Effect of Ethephon on Water Potential and Osmotic Potential in Two Sorghum Cultivars Differing in Drought Resistance[J]. ACTA AGRICULTURAE BOREALI-SINICA, 1989, 4(S1): 103-107. doi: 10.3321/j.issn:1000-7091.1989.z1.018.

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