Adaptation of the Spearman-Kärber Method for Estimating the T50 of Cold Stressed Flower Buds1
| Autor: | H. C. Bittenbender, Gordon S. Howell |
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| Rok vydání: | 1974 |
| Předmět: | |
| Zdroj: | Journal of the American Society for Horticultural Science. 99:187-190 |
| ISSN: | 2327-9788 0003-1062 |
| Popis: | Survival data for cold stressed blueberry flower buds are used to demonstrate application of the Spearman-Kärber (S-K) method for estimating T50. Quantal responses are used. The S-K method determines the T50 for buds stressed over a range of temperatures which produce 0 to 100% bud survival. The general equation can accommodate data containing unequal temperature intervals and unequal numbers of observations per temperature treatment. A single statistic, S, can be calculated using a second equation which is an unbiased indicator of the variance of the temperature-percent survival curve around the T50 point. The major advantages of the S-K method are speed, adaptability to computer programming, and accuracy with small sample sizes. Agreement is within 0.5°C of graphically determined T50 values. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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