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Botanical Studies

Table 2 Acid treatment: relative germination rate of Adansonia digitata seeds after 10 weeks [%]

From: Adansonia digitata germination tests. Elephants or heat: what causes scarification of seed to facilitate germination?

Treatment

2017a

2017b

2018

2019a

Average

H2SO4 for 5 min

  

0

 

0

H2SO4 for 10 min

12

7

3

 

7.3**

H2SO4 for 15 min

  

14

 

14**

HCl for 1 h, pH 2

   

0

0

HCl for 1 h, pH 3

   

2

2

HCl for 2 h, pH 2

   

1

1

HCl for 2 h, pH 3

   

2

2

Elephants´ digestion, germinating in soil

0

7

1

 

2.7*

Elephants´ digestion, germinating in elephants´ faeces

  

1

 

1

  1. Results obtained in three test setups with 100 seeds per treatment each: 2017a, 2017b, 2018 and 2019a. Significant increase of GR compared to the control without treatment are indicated with *P<0.05, **P<0.01
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