Breeding of Fruit and Plantation Crops 2 + 1

RRII 414, RRII 430, RRII 5 , RRII 203, RRII 417 & RRII 422

RRII 414, RRII 430, RRII 5 , RRII 203, RRII 417, RRII 422 & RRII 52

RRII414

Country of origin
India
Developed by
Rubber Research Institute of India
Parentage
RRII 105 x RRIC 100
Mean Yield	4 Years	10 Years
Small scale evaluation(g/tree/tap)	-	74.02(40%)*
Large scale evaluation(g/tree/tap)	56.68(26%)*
* Values in brackets indicate percentage improvement over RRII 105
Vigour
High
Girth increment on tapping
Average
Trunk
Tall, straight and cylindrical with prominent leaf scar, slightly leaning
Branching pattern
Very high heavy branches with strong union
Canopy
Open, broad and heavy
Virgin bark thickness
Above average
Renewed bark
thickness
High
Number of latex vessel rows
Above average in both virgin and renewed bark
Incidence of major diseases and pests
Pink – moderate
Powdery mildew – high
Abnormal leaf fall – moderate
Corynespora leaf fall - low
Reaction to stresses
Wind - average tolerence
Occurrence of TPD
Low
DRC
Above average
Color of latex
White
Special features
Yield better than RRII 105 in the first year of tapping in the on-farm trial and comparable to that of RRII 105 in the multilocation trials
RRI430

Country of origin
India
Developed by
Rubber Research Institute of India
Parentage
RRII 105 x RRIC 100
Mean Yield	5 Years	10 Years
Small scale evaluation(g/tree/tap)	-	63.37(20%)*
Large scale evaluation(g/tree/tap)	61.09(36%)*
* Values in brackets indicate percentage improvement over RRII 105
Vigour
Above average
Girth increment on tapping
Average
Trunk
Tall straight cylindrical stem with smooth bark
Branching pattern
Balanced branching with strong branch union. Moderate to heavy branches
Canopy
Open broad and heavy with large glossy leaves
Virgin bark thickness
High
Renewed bark thickness
High
Number of latex vessel rows
Above average in both virgin and renewed bark
Incidence of major diseases and pests
Pink – low
Powdery mildew - very high
Abnormal leaf fall – low
Corynespora leaf fall - low
Reaction to stresses
Wind - high tolerance
Occurrence of TPD
Low
DRC
High
Color of latex
White
Special features
Yield better than RRII 105 in the first year of tapping in on-farm trial and in multilocation trials
RRII5

Country of origin
India
Developed by
Rubber Research Institute of India
Parentage
Primary clone (Selected from Malankara Estate, Thodupuzha)
Mean Yield	5 Years	10 Years	15 Years
Large scale evaluation(g/tree/tap)	55.30	65.27	71.44
On farm evaluation(kg/ha/yr)	1352
Incidence of major diseases and pests
Pink – mild
Powdery mildew - moderate to severe
Abnormal leaf fall - moderate to severe
Wind - above average tolerance
Reaction to stresses
Wind - above average tolerance
Occurrence of TPD
High
DRC
Average
Special features
Very vigorous clone with above average yield. Can be used as a latex timber clone

RRII 203

Country of origin
India
Developed by
Rubber Research Institute of India
Parentage
PB 86 x Mil 3/2
Mean Yield	5 Years	10 Years	15 Years
Small scale evaluation(g/tree/tap)	56.08	78.19	82.12
Large scale evaluation(g/tree/tap)	50.19	58.64	61.62
On farm evaluation(kg/ha/yr)	1396	1649*	1811
* Average yield from 2 locations
Incidence of major diseases and pests
Pink-moderate
Powdery mildew-moderate
Abnormal leaf fall-moderate
Reaction to stresses
Cold - average tolerance
Wind - average tolerance
Occurrence of TPD
Low
DRC
High
Special features
Latex coagulation shows black discolouration which does not affect the quality of rubber. Can be used as a latex timber clone.
RRII 417

Country of origin
India
Developed by
Rubber Research Institute of India
Parentage
RRII 105 x RRIC 100
Mean Yield	5 Years	10 Years
Small scale evaluation(g/tree/tap)	-	70.52(33%)*
Large scale evaluation(g/tree/tap)	53.06(18%)*
* Values in brackets indicate percentage improvement over RRII 105
Vigour
Above average
Girth increment on tapping
Average
Trunk
Tall and more or less straight with smooth bark
Branching pattern
High, balanced with moderate to heavy branches
Canopy
Broad, partially closed and heavey with semi glossy dark green leaves restricted to the top
Virgin bark thickness
Average
Renewed bark thickness
High
Number of latex vessel rows
Above average in both virgin and renewed bark
Incidence of major diseases and pests
Pink – moderate
Powder mildew - very high
Abnormal leaf fall - low to moderate
Corynespora leaf fall - moderate
Reaction to stresses
Wind - high tolerance
Occurrence of TPD
Low
DRC
High
Color of latex
White
Special features
Yield better than RRII 105 in the first year of tapping in on-farm trial and in multilocation trials.
RRII422

Country of origin
India
Developed by
Rubber Research Institute of India
Parentage
RRII 105 x RRIC 100
Mean Yield	4 Years	10 Years
Small scale evaluation(g/tree/tap)	-	64.94(23%)*
Large scale evaluation(g/tree/tap)	61.16(36%)*
* Values indicate percentage improvement over RRII 105
Vigour
Above average
Girth increment on tapping
Average
Trunk
Crooked and high branching
Branching pattern
Moderate heavy branches with strong union
Canopy
Open, narrow and dark green glossy leaves
Virgin bark thickness
Average
Renewed bark thickness
Above average
Number of latex vessel rows
Above average in both virgin and renewed bark
Incidence of major diseases and pests
Pink – low
Powdery mildew – high
Abnormal leaf fall – low
Corynespora leaf fall - moderate
Reaction to stresses
Wind - tolerance
Occurrence of TPD
Low
DRC
High
Color of latex
White
Special features
Yield better than RRII 105 in the first year of tapping in on-farm trial and in multilocation trials

RRII 52

Country of origin
India
Developed by
Rubber Research Institute of India
Parentage
Primary clone
Mean Yield	5 Years
Small scale evaluation(g/tree/tap)	44.08
Vigour
Average
Trunk
Straight and cylindrical
Branching pattern
Balanced with acute angled secondaries
Canopy
Medium sized and open
Incidence of major diseases and pests
Moderate
Occurrence of TPD
Low
DRC
Average