International Workshop Tropical Bio-resources For Sustainable Development, The Role of Innovation to Enhance Germany Alumni in Scientific and Professional Capacities, August 13rd-15rd 2014 Bogor-West Java, Indonesia

1. BREEDING FOR NEW TYPES OF HONEY
SWEETPOTATO BASED ON LOCAL PLANT
GENETIC RESOURCES OF WEST JAVA
INDONESIA
Agung Karuniawan
Faculty of Agriculture, Padjadjaran University
Budi Waluyo
Faculty of Agriculture, Brawijaya University
2014
International Workshop Tropical Bio-resources For Sustainable Development, The Role of
Innovation to Enhance Germany Alumni in Scientific and Professional Capacities,
August 13rd-15rd 2014 Bogor-West Java, Indonesia.

2. INTRODUCTION
• Sweetpotato is an important potential food
crop
• Tuber : Main source of carbohydrate, vitamins
A (orange flesh tuber), B and C, potassium,
phosphorus, calcium, magnesium, antioxidant
(purple flesh tuber)
• Leaf : rich in polyphenols, protein, vitamins
and minerals

3. INTRODUCTION
• Indonesia is one of the area of center diversity
sweetpotato in the word
(Mok & Schmiediche 1998)
(Kays et al., 2005)

4. INTRODUCTION
• West Java is one of the centers of diversity of sweet
potatoes in Indonesia
• People consume sweet potato as food consumption
directly through honey sweet potato Cilembu
• Cilembu honey sweet potato has diverse variations and
adapt specific regions
• Local honey sweet potato endangered
• Padjadjaran University has conducted exploration and
conserve local germplasm accessions of sweet potato
in West Java
• Used as a material to increase the genetic capacity on a
new type of honey sweet potato

5. OBJECTIVE
• Conserving local sweetpotato germplasm in
West Java
• Conduct plant breeding based local
germplasm accession through polycross in the
plot collection
• Select F1 potential for new type honey sweet
potato

6. MATERIAL AND METHOD
1. Germplasm collection 2. Polycross plot and harvesting seed

7. 3. F1 evaluation and selection 4. Sweetness test (% Brix)

8. RESULT : Breeding Scheme
Germplasm collection and
polycross plot
Seed (known maternal, unknown
paternal)
Propagation
Select Clone
(4-5 month)
4 month
3 mon th
Select Clone
(4-5 month)
Select Clone
(4-5 month)

9. Distribution Primary Unpad’s Sweetpotato Germplasm Collection
Main Characteristics
(sample size n=50)
0
2
4
6
8
10
12
14
16
18
Frequency
Storage Root Shape
0
5
10
15
20
25
Frequency
Predominant Flesh Color
0
5
10
15
20
25
30
35
Frequency
Fresh weight perstorage root
(g)
0
2
4
6
8
10
12
14
16
18
Frequency
Yield Potency (t/ha)
0
5
10
15
20
25
Frequency
% Brix (baked-oven 190oC -2 hour)

10. Distribution F1 Plant – seed Obtained from Polycross Plot and
Selection Based on Storage Root Shape Characteristic
68
17
101
66
18 16
232
12
34
0
50
100
150
200
250
Frequency
Storage Root Shape
Selected storage root
shape :
1. Elliptic
2. Oblong
3. Long oblong
4. Long Elliptic
New type honey
sweetpotato

11. Main Characteristic Selected F1 for
New Type Honey Sweetpotato
• Fresh tuber weight between 150-300 g tuber -1
elliptic
Long
elliptic
long
oblong oblong
150
170
190
210
230
250
270
290
310
Freshweightperstorageroot(g)
Fresh weight perstorage root (g)
elliptic
long
elliptic
long
oblong oblong
0
10
20
30
40
50
60
70
YieldPotency(t/ha)
Yield Potency (t ha-1)
elliptic
long
elliptic
long
oblong oblong
0
5
10
15
20
25
30
35
%Brix(baked)
% Brix (baked-oven 190oC - 2hour

12. Selected F1 New Type Honey Sweetpotato Based
% Brix > 10 and Higher Yield > 15t ha-1
Flesh colour No.
Obs.
Yield
(t ha-1)
Tuber weight
(g)
% Brix
Cream 17 16.0 - 51.0 150.0 - 290.0 10.0 - 32.0
Dark yellow 3 22.0 - 31.0 157.1 - 221.4 15.8 - 21.5
Intermediate orange 8 15.0 - 41.0 154.5 - 250.0 11.2 - 22.5
Pale orange 6 18.0 - 38.5 150.0 - 300.0 13.3 - 23.5
Pale yellow 23 16.0 - 43.0 150.0 - 290.9 11.7 - 29.8
Purple 31 15.0 - 62.0 150.0 - 293.8 10.5 - 28.5
White 20 15.5 - 45.5 152.4 - 306.3 10.1 - 28.5
Total 108

13. New Types Honey Sweetpotato
Varieties

14. • Thank You