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DR. 
J.D.H. 
KEATINGE 
DIRECTOR 
GENERAL 
AVRDC 
-­‐ 
THE 
WORLD 
VEGETABLE 
CENTER
2008 
2! 
Association of International Research and 
Development Centers for Agriculture (AIRCA)
Coping with Increasing Climate 
Uncertainty: Flooding 
Disease 
and 
Fruit 
Loss 
Excess soil moisture damages tomato plants leading to dramatic loss of yield
• Grafting: improved rootstocks 
to manage bacterial wilt and 
flooding in Solanaceous crops 
BW: 
Non-­‐gra7ed 
vs 
gra7ed 
tomato
Rubber tubing: Better for grafting than traditional 
clips as it falls off naturally as the plant grows 
Grafted plants prove successful in Qatar!
Crop Protection from soil borne diseases through grafting 
Protects 
a 
variety 
with 
good 
yield 
and 
quality 
but 
is 
otherwise 
suscepGble 
to 
soil-­‐ 
borne 
diseases 
or 
flooding 
by 
graIing 
onto 
a 
rootstock 
with 
desirable 
resistance 
Rubber tube 
Bacterial Wilt 
Very Severe 
Soil Borne 
Disease 
Scion 
Rootstock 
Graft 
Diagonal 
cut
GraIing 
tomato 
onto 
eggplant 
rootstocks 
using 
rubber 
tubing 
in 
Bangladesh 
SEE AVRDC on six minute 
Youtube film:- 
“How to graft tomato and 
eggplant: Tube splice 
method”
Several successful women’s 
grafting cooperatives 
trained by AVRDC in 
Jessore, Bangladesh 
Technology well suited to the 
landless poor 
Grafted seedlings sell for about 5 times 
the price of normal seedlings and have 
shown themselves to be effective 
against bacterial wilt in Jessore 
Graft recovery chamber with high humidity
Economic impact of AVRDC tomato grafting 
technique in Lam Dong province, Vietnam 
Parameter Lam Dong province 
Yield (t/ha) 73 
Adoption rate by tomato farmers 100% 
Total area under tomato production (ha, 2011) 6,388.0 
Contribution of grafting ($million/yr) 9.3
What’s next: Can tomatoes and eggplants grow on trees? 
Solanum torvum (Prickly nightshade) as a new grafting 
rootstock for eggplants and other Solanaceous spp. 
• Highly resistant to common fungal and 
bacterial wilts and root knot nematodes. 
• Vigorous growth supports higher yield. 
• Drought tolerant. 
• Locally available root stocks (India, 
Thailand) 
• Easy to produce as root-stocks. 
• Perennial and supports longer duration. 
• Berries already used as local vegetable 
in Thai Green Curry and Tamil Nadu 
cuisine.
AVRDC Bringing Prosperity for the Poor and Health for All

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Dr Dyno Keatinge, Director General, AVRDC – The World Vegetable Center

  • 1. DR. J.D.H. KEATINGE DIRECTOR GENERAL AVRDC -­‐ THE WORLD VEGETABLE CENTER
  • 2. 2008 2! Association of International Research and Development Centers for Agriculture (AIRCA)
  • 3. Coping with Increasing Climate Uncertainty: Flooding Disease and Fruit Loss Excess soil moisture damages tomato plants leading to dramatic loss of yield
  • 4. • Grafting: improved rootstocks to manage bacterial wilt and flooding in Solanaceous crops BW: Non-­‐gra7ed vs gra7ed tomato
  • 5. Rubber tubing: Better for grafting than traditional clips as it falls off naturally as the plant grows Grafted plants prove successful in Qatar!
  • 6. Crop Protection from soil borne diseases through grafting Protects a variety with good yield and quality but is otherwise suscepGble to soil-­‐ borne diseases or flooding by graIing onto a rootstock with desirable resistance Rubber tube Bacterial Wilt Very Severe Soil Borne Disease Scion Rootstock Graft Diagonal cut
  • 7. GraIing tomato onto eggplant rootstocks using rubber tubing in Bangladesh SEE AVRDC on six minute Youtube film:- “How to graft tomato and eggplant: Tube splice method”
  • 8. Several successful women’s grafting cooperatives trained by AVRDC in Jessore, Bangladesh Technology well suited to the landless poor Grafted seedlings sell for about 5 times the price of normal seedlings and have shown themselves to be effective against bacterial wilt in Jessore Graft recovery chamber with high humidity
  • 9. Economic impact of AVRDC tomato grafting technique in Lam Dong province, Vietnam Parameter Lam Dong province Yield (t/ha) 73 Adoption rate by tomato farmers 100% Total area under tomato production (ha, 2011) 6,388.0 Contribution of grafting ($million/yr) 9.3
  • 10. What’s next: Can tomatoes and eggplants grow on trees? Solanum torvum (Prickly nightshade) as a new grafting rootstock for eggplants and other Solanaceous spp. • Highly resistant to common fungal and bacterial wilts and root knot nematodes. • Vigorous growth supports higher yield. • Drought tolerant. • Locally available root stocks (India, Thailand) • Easy to produce as root-stocks. • Perennial and supports longer duration. • Berries already used as local vegetable in Thai Green Curry and Tamil Nadu cuisine.
  • 11. AVRDC Bringing Prosperity for the Poor and Health for All