DEVELOPMENT OF HIGH YIELDING

SWEETPOTATO CULTIVAR

Budi Waluyo

PLANT BREEDING LABORATORY - FACULTY OF AGRICULTURE

BRAWIJAYA UNIVERSITY, MALANG, INDONESIA 2014

INTRODUCTION

Feed

(tonnes),

37,700.00 ,

2%

Seed

(tonnes),

168,973.90

, 9%

Waste

(tonnes),

187,000.00

, 10%

Food

(tonnes),

1,474,067.1

0 , 79%

Domestic supply (average 2000-

2009)

Import

Quantity

(tonnes),

25.20 , 0%

Export

Quantity

(tonnes),

9,748.60 ,

1%

Domestic

supply

quantity

(tonnes),

1,867,741.

10 , 99%

Production (Average 2000-2009)

FAO, 2012

West Java

Functional Food

BREEDING STRATEGIES

High Yielding

Early harvested cultivars

Tolerance to abiotic stress

Resistent to biotic stress

High nutritive value

Industrial Suitability

The General Principal

of Plant Breeding Activity

Management of Variability

Selection

Preliminary Test

Advanced Field Test

Cultivar release

Management of Variability

Sweetpotato is highly self incopatible and

highly dificult directional artificial crossing

Tetraploid and heterozigot

Seed harvested from outcrossing in

collection germplasm field

Each individual seed is a genotype

Selection

Quantify central tendency and dispersi of characters to be in the breeding

----- genetic parameters

x = means

s2 = variance

s = standar deviation

select individualy and propagated

Preliminary Yield Trials

Selected promosing clones propagated

and planted in a 5 m single rows, 20cm

Planting 100-200 clones

Advanced Yield Trials

Selected promosing clones propagated

and planted in a 10 m single rows, 20cm

Planting 50 clones

Cultivar release

Eight location

2 season

Scheme

Seed harvest Season

Planting individually

- Record potential genotypes and propagated

4 month

Preliminary field test

- 5 m single row, 20 cm

- Record high yield genotypes clones and mass

propagated

4-5 month

Advanced field test

-10 m single rows, 20cm

- Record promosing clone and mass

propagated

4-5 month

Cultivar release

-Multi environmental Trial

-8 location 2 season

8-10 month

20 – 24 month

CONCLUSION

sweet potato breeding cycle can be

accelerated through vegetative mass

propagation from selected genotypes in

the early selection

I love Sweetpotato,

Indonesia is secondary center of

sweetpotato diversity…..