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發芽

仅发芽三天之后的向日葵幼苗
在萌发桌上进行的发芽率测试

发芽(Germination)是指植物从种子中或真菌从孢子中发出的过程。在园艺上多指的是胚根从种皮突出的状态,但广义来说,发芽可以指任意一个从小的存在或生殖细胞展开扩大的过程。

发芽指标[1]

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发芽率(germination percentage):

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发芽种子数占总播种种子数之百分率。

T50

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达到发芽率50%所需要的时间。

平均发芽日(mean germination time, MGT):

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,fi:播种后第i天之发芽数。di:播种后天数。N:发芽试验期间之总发芽数[2]

发芽速率指数(germination rate index, GRI):

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,Gi:第i天的发芽种子数。Ti:发芽日数。N:发芽截止日数[3]

参考资料

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  1. ^ 陈隽. 預措處理對13種木本植物種子發芽之影響 (2017年). 2017-01-01 [2022-09-29]. doi:10.6342/NTU201800501. (原始内容存档于2022-10-04). 
  2. ^ Ellis, R. H.; Roberts, E. H. The quantification of ageing and survival in orthodox seeds. Seed Science and Technology (Netherlands). 1981 [2022-09-29]. (原始内容存档于2022-09-29) (English). 
  3. ^ Brown, R. F.; Mayer, D. G. A CRITICAL ANALYSIS OF MAGUIRE'S GERMINATION RATE INDEX. Journal of Seed Technology. 1986, 10 (2) [2022-09-29]. ISSN 0146-3071. (原始内容存档于2022-09-29). 


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發芽
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