TY  - BOOK
AU  - Gohet E
AU  - Clement A
AU  - Eschbach J M
AU  - Jacob J-L
AU  - Prevot J-C
TI  - Hevea latex production, relationship with tree growth, influence of clonal origin and Ethrel stimulation
PY  - 1995///
PB  - IRRDB symposium on physiological and molecular aspects of the breeding of Hevea brasiliensis 6-7 November 1995
KW  - Growth
KW  - Hevea brasiliensis
KW  - Inorganic phosphorus content
KW  - Latex
KW  - Latex production
KW  - Stimulation
KW  - Sugar content
N2  - The growth of Hevea brasiliensis, reflected by the primary biomass formation, competes directly with latex production which corresponds to secondary biomass synthesis. Five clones with very different growth and yield characteriatics were studied as follows : AF 261, AVROS 2037, PB 217, GT1 and PB 235. Several groups of each clone were compared, namely unopened trees, exploited but unstimulated trees and finally exploited trees with the same tapping intensity but with increasing Ethrel stimulation. The results show that the respective primarry and secondary biomass products lead to a linear regression which reflects the competition between the two synthetic  functions ; the repartition coefficient between these functions is dependent on the clone and its physiological characteristics. Beyond a cerrtain stimulation intensity, if growth continues to decrease then latex yield also decreases due to disfnctioning of the laticigenous function. The critical level of stimulation is clone dependant. For these five clones, the latex sucrose content and latex
ER  -