دینا فایل / The Tetrazolium Test
The Tetrazolium Test
The Tetrazolium Test
عداد صفحه : 6The Tetrazolium Test(TZ): The Tetrazolium Test provides a quick estimate of seed viability. With results within one to two days this test can be very helpful when time is a factor or for species which have very long germination requirements. Tetrazolium testing originated in Germany during the early 1940s. George Lakon and colleagues discovered that embryonic tissues had to be alive and respiring in order for the seed to germinate normally. Their early biochemical work led to the development of a topographical staining method for determining seed viability. The early experiments used toxic chemicals such as selenium and tellurium to indicate viability, which limited their usefulness in seed testing. In 1942, Lakon developed a method using less-toxic tetrazolium as the...