Publication Date
1993
Description
Sainfoin ( Onobrychis viciifolia Scop.) is of particular interest as a pasture crop because it is a productive legume in dry areas but does not induce bloat in ruminant animals. In this study 3·sainfoin cultivars (Fakir, Melrose and 035) and l lucerne (Medicago saliva L.) cultivar Grasslands Oranga were compared during a drying phase when water was withheld once; flowering began. A randomised complete block design with 4 replicates' was used. Transpiration rate (Tr) declined as volumetric soil water content (VSWC) was reduced. Stomata! resistance (Rs) increased and relative ivater content (RWC) decreased when VSWC decreased. Critical VSWC for Rs, Tr and RWC were 12 and 8% for lucerne and sainfoin respectively, Lucerne showed lower Tr, higher Rs and higher RWC than sainfoin during water stress. Root dry weight varied significantly, with lucerne and 035 having the lowest and highest weight, respectively, Leaf and stem dry weights of cultivars were not significantly different.
Citation
Mir Hosseini, S R.; Kemp, P D.; Barker, D J.; and Hodgson, J, "Adaptation of Sainfoin Cultivars and Lucerne to Water Stress" (2024). IGC Proceedings (1993-2023). 16.
https://uknowledge.uky.edu/igc/1993/session8/16
Included in
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Adaptation of Sainfoin Cultivars and Lucerne to Water Stress
Sainfoin ( Onobrychis viciifolia Scop.) is of particular interest as a pasture crop because it is a productive legume in dry areas but does not induce bloat in ruminant animals. In this study 3·sainfoin cultivars (Fakir, Melrose and 035) and l lucerne (Medicago saliva L.) cultivar Grasslands Oranga were compared during a drying phase when water was withheld once; flowering began. A randomised complete block design with 4 replicates' was used. Transpiration rate (Tr) declined as volumetric soil water content (VSWC) was reduced. Stomata! resistance (Rs) increased and relative ivater content (RWC) decreased when VSWC decreased. Critical VSWC for Rs, Tr and RWC were 12 and 8% for lucerne and sainfoin respectively, Lucerne showed lower Tr, higher Rs and higher RWC than sainfoin during water stress. Root dry weight varied significantly, with lucerne and 035 having the lowest and highest weight, respectively, Leaf and stem dry weights of cultivars were not significantly different.
