The impact of temperature on seed germination in bambara groundnut (Vigna subterranea (L.) Verdc) landraces
Poor and slow seed germination are major drawbacks for the cultivation of bambara groundnut (Vigna subterranea (L.) Verdc) in the semi-arid tropics. The effect of temperature on seed germination of 10 bambara groundnut landraces was evaluated to determine the degree of variability among landraces. Temperature had a significant effect on both final percentage germination (FPG) and rate of germination (GR) in all landraces. The optimum temperature (To) for germination of bambara groundnut ranged from 30.2 to 35.3°C and there was variability for germination in bambara groundnut landraces under different temperatures which supports the possibility for improving rate and final germination. The ranking order of landraces varied at different temperatures, however, some landraces had a consistently high FPG and GR at a wide range of temperatures. The implications of the observed variations among landraces are discussed.
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Document Type: Research Article
Publication date: July 1, 2003
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