Influence of Hydro-priming duration on Morpho-physiological traits of milk thistle under water stress
Journal Title: Journal of Biodiversity and Environmental Sciences (JBES) - Year 2016, Vol 9, Issue 1
Abstract
A split plot experiment with three replications was conducted in 2015, to investigate the effects of hydro-priming duration (P1, P2 and P3: 0, 8 and 16 hours, respectively) on some morpho-physiological traits of milk thistle (Silybum marianum L.) under different irrigation intervals (I1, I2, I3 and I4: Irrigation after 70, 100, 130 and 160 mm evaporation from class A pan, respectively). Irrigation levels and hydro-priming treatments were allocated to main and sub plots, respectively. Relative water content (RWC), membrane stability index (MSI), and all morphological traits decreased, but leaf temperature (LT) increased with increasing water stress. The LT reduced as a result of increasing priming duration up to 16 hours. Increasing water limitation led to considerable reduction in plant height, but this was enhanced by hydro-priming under all irrigation treatments. Hydro-priming for 16 hours was the best seed pretreatment to improve field performance of milk thistle in control and water stress conditions.
Authors and Affiliations
Iraj Yaghoubian, Yaghoub Raei, Kazem Ghassemi-Golezani
Keywords
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