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Introducing grafted cucurbitsto modern agriculture:The Israeli experience
Ron Cohen
Section of Cucurbit ResearchSection of Cucurbit Research
Newe Newe Ya’arYa’ar Research Center, Research Center,
IsraelIsrael
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What is grafting ?
Uniting of two living plant parts so that they grow as a single plant
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Methyl bromideMethyl bromide
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Grafted vegetables in Israel
Tomato Cucurbits
Melon WatermelonCucumber
Soil-borne diseases – Fusarium, Mpnosporascus,MacrophominaMacrophomina
Response to insects and nematodesSalinity and marginal water
Rootstock breeding
Agro-technology and yield – Fruit qualityRootstock- scion compatibility
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Soil-borne diseases
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Grafted Non grafted
GraftedNon-grafted
Watermelon Vine DeclineWestern Galilee
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Macrophomina phaseolina
Monosporascus cannonballus
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Newe Ya’ar Research Center
Macrophomina land
Northern Valleys
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Is it profitable growing grafted melons in mid-summerfor the local market ?
Transplants Prices:
Non-grafted : 0.35 NIS
Grafted : 2.5 NIS
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Above GraftDistant from Graft
Mixture of Fusarium sp. and
Macrophomona phaseolina
Root Scion
שדה יעקב–מלון מורכב על כנת דלעת 2006ספטמבר
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Sdee Yaacov 2006
Yie
ld (
kg/D
)
a
aa
a
a
aa
b
6405 Eyal
Stand (cm)
Yie
ld (
kg/D
)
b
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Monosporascus land
Jordan“Zohar” experiment station
‘Ein tamar
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Melon physiological collapse at ‘En TamarSpring, 2000
35404550
Co
lla
pse
in
cid
ence
TRELLISED
PROSTRATE
05
1015202530
Co
lla
pse
in
cid
ence
(%)
non grafted melon-melon melon-Cucurbita
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-Melon grafted onto rootstocks from Newe Ya’ar breeding program (#18 and 34) did not collapse when grown trellised.
-Melon yield was 60% higher as compared to non-grafted melons.
-The yield was 30% significantly higher compared to melon plants grafted onto the currently used commercial rootstock.
60
Accumulative yield - saline water (EC 4.2)
0
10
20
30
40
50
60
90 110 130 150 170 190
Yie
ld (
Kg
/plo
t)
Days from planting
18
34
TZ-148
control
A
AB
BC
C
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The two step selection
Spring
Adapting grafted melons to trellised cultivation
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Non-grafted
Second Fruit Wave First Fruit Wave
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(
Grafted
Second Fruit WaveFirst Fruit Wave
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Stress conditions
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21.2.2002
Boron 10 mg/l
13.3.2002
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Boron absorption
Non-grafted
y = 2.6252e
R2 = 0.9338
60.00
70.00
80.00
90.00
Grafted
y = 2.8602e
R2 = 0.8038
60.00
70.00
80.00
90.00
B in
leav
es (
mg
/l)
0.00
10.00
20.00
30.00
40.00
50.00
60.00
0.25 0.8 2.5 5 10
B in irrigation water (mg/l)
B in
leav
es
0.00
10.00
20.00
30.00
40.00
50.00
60.00
0.25 0.8 2.5 5 10
B in irrigation water (mg/l)
B in
leav
es (
mg
/l)
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Fruit quality
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Mini- watermelon
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Incompatibility,
water uptakewater uptake
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Arava non-grafted
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Arava / RS 60
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Physiological
incompatibility
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Non grafted
Arava Valley summer 2003
Grafted
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Anatomical Examination of Grafting Site
62/ערבה 11 days post grafting 14 days post grafting
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Effect of TIBA (200 ppm) on the development of
Arava melon grafted on the Cucurbita rootstock RS 62
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IAA
IAA
Compatible Incompatible
Root growth
Ethylene induction
ROS production
Root death
Ethylene induction
ROS production
Antioxidation
system
genes ?
genes ?
genes ?
*
*
*
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