climatic effects on production and quality of bilberries (vaccinium myrtillus) inger martinussen 1,...
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![Page 1: CLIMATIC EFFECTS ON PRODUCTION AND QUALITY OF BILBERRIES (VACCINIUM MYRTILLUS) Inger Martinussen 1, Jens Rohloff 2, Eivind Uleberg 1, Olavi Junttila 3,](https://reader030.vdocuments.us/reader030/viewer/2022032600/56649dc95503460f94abf2b7/html5/thumbnails/1.jpg)
CLIMATIC EFFECTS ON PRODUCTION AND QUALITY OF BILBERRIES (VACCINIUM MYRTILLUS)
Inger Martinussen1, Jens Rohloff2, Eivind Uleberg1, Olavi Junttila3, Anja Hohtola4, Laura Jaakola4 and Hely Häggman4
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Effect of light conditions and temperature on production and quality
• 12 ◦C, 24 h light• 12 ◦C, 24 h light + red
light• 12 ◦C, 12 h light• 18 ◦C, 24 h light• 18 ◦C, 24 h light + red
light• 18 ◦C, 12 h light
• 2 Northern clones• 2 Southern
clones
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Production at 12◦C
28 30 35 38 43 49 52 56 630
5
10
15
20
25
30
35
12◦C, 24 h light with addition of red light
S1
S2
N1
N2
Ber
ry w
eig
ht
(g)
28 30 35 38 43 49 52 56 630
2
4
6
8
10
12
14
16
12◦C, 24 h lightS1
S2
N1
N2
Ber
ry w
eig
ht
(g)
28 30 35 38 43 49 52 56 630
5
10
15
20
25
30
35
12◦C, 12 h light S1
S2
N1
N2
Ber
ry w
eig
ht
(g)
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Production at 18◦C
28 30 35 38 43 49 52 56 630
5
10
15
20
25
18◦C, 24 h light S1
S2
N1
N2
Ber
ry w
eig
ht
(g)
28 30 35 38 43 49 52 56 630
2
4
6
8
10
12
14
18◦C, 24 h light + red lightS1
S2
N1
N2
Ber
ry w
eig
ht
(g)
28 30 35 38 43 49 52 56 630
5
10
15
20
25
18◦C, 12 h light S1
S2
N1
N2
Ber
ry w
eig
ht
(g)
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Berries are sweeter at low temperature (P=0.000 for clone and temp)
12
C 2
4t
12
C 2
4t
12
C 2
4t+
R
12
C 2
4t+
R
12
C 1
2t
12
C 1
2t
18
C 2
4t
18
C 2
4t
18
C 2
4t+
R
18
C 2
4t+
R
18
C 1
2t
18
C 1
2t
North
South
North
South
North
South
North
South
North
South
North
South
0
2
4
6
8
10
12
14
16
% s
ug
ars
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Higher content of acids at low temperature (P=0.000 for clone and temp, P=0.011 for light)
12
C 2
4t
12
C 2
4t
12
C 2
4t+
R
12
C 2
4t+
R
12
C 1
2t
12
C 1
2t
18
C 2
4t
18
C 2
4t
18
C 2
4t+
R
18
C 2
4t+
R
18
C 1
2t
18
C 1
2t
North
South
North
South
North
South
North
South
North
South
North
South
0
1
2
3
4
5
% a
cid
s
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Total phenolic content higher in Northern clones (P=0.001)
12
C 2
4t
12
C 2
4t
12
C 2
4t+
R
12
C 2
4t+
R
12
C 1
2t
12
C 1
2t
18
C 2
4t
18
C 2
4t
18
C 2
4t+
R
18
C 2
4t+
R
18
C 1
2t
18
C 1
2t
North South
North South
North South
North South
North South
North South
0
100
200
300
400
500
600
700
To
tal p
he
no
ls (
mg
/10
0g
)
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Compound Temp Light Clone T*C L*CMalic acid *** ** ***Citric acid **Quinic acid *** *** *** *Fructose *** ***Glucose *** ***Sucrose *** ***Chiro-inositol ** *** ***Myo-inositol *** *** **Ascorbic acid **Gallic acid **Catehin *** *** ** *Epigallocatechin
* ***
Cetechin derivates
*** ***
Chlorogenic acid
*** *** *** ***
QuercetinTotal phenols ***Sugars % *** ***Acids % *** ** ***
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Summary • At 12◦C the two Northern clones produced ripe berries 5 weeks after pollination, while the two Southern clones needed an extra two weeks to ripening.
• At 18◦C both the Northern and Southern clones had ripe berries from 5 weeks after pollination
• Berries produced at 12C had significantly higher % of sugars (sucrose, fructose and glucose), phenolic acids and total phenols than berries produced at 18C
• Breeding material should be selected based on evaluation of results achieved from the health benefit compounds of bilberry clones
• Environmental effects on berry quality will open the door for breeding specific clones for specific regions.
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Thank you!
• Kirsten Jakobsen• Hermod Nilsen• Svein Erik Olsen• Nordic Innovation
Centre• Norwegian
Research Council