Rubber Tree
Impact of the timing and duration of weed control on the establishment of a rubber tree plantation
... Increased growth in response to weed control is usually explained in terms of improved access of the trees to water (Sands and Nambiar 1984) or nutrients (Ellis et al. 1985, Smethurst and Nambiar 1989, örlander et al. ...
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Effects of powdery mildew infection on chloroplast and mitochondrial functions in rubber tree
... After rubber tree infection by powdery mildew proline content was increased at 5 dai, but was decreased at 10 dai (Figure ...infected rubber tree leaves at 5 and 10 dai ...
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Estimation of variance components and prediction of breeding values in rubber tree breeding using the REML/BLUP procedure
... phenotypic means. The use of improved prediction meth- ods such as BLUP provides higher selection accuracy and so permits to reduce drastically the recording period. Wise choice of parents for crossing is also desirable ...
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Assessment of rubber tree panels under crowns resistant to South American leaf blight
... per year, even though they produced good yield under other edaphoclimatic conditions (Pereira et al., 1999; Gonçalves et al., 2001b; Silva et al., 2010). The poor results found for these clones do not prevent their use ...
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Age-age correlation for early selection of rubber tree genotypes in São Paulo State, Brazil
... 68 rubber tree (Hevea ...annual rubber production (yield) were significant for the three traits, with the coefficients decreasing with increasing ...
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Potential carbon sequestration in rubber tree plantations in the northwestern region of the Paraná State, Brazil
... old rubber tree plantations (Figure 1a). The greater SOC in the rubber tree plantations compared to the pasture is likely caused by the greater inputs of organic material in the ...
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Maximization of genetic gain in rubber tree (Hevea) breeding with effective size restriction
... Since there is little information on Ne for rubber tree, there is a need to examine the genetic gains obtained by different selection methods. Individual selection (among and within progenies), as well as ...
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Selection and genetic gain in rubber tree (Hevea) populations using a mixed mating system
... The RP heritability coefficients associated with the different genetic effects used in the selection methods are shown in Table II. The heritability estimates obtained by the different models varied within and among ...
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Genetic divergence of rubber tree estimated by multivariate techniques and microsatellite markers
... the Rubber Tree Program of the Agronomic Institute (IAC, Campinas, SP, Brazil) were chosen at advanced evaluation phases within genetic breeding ...for rubber extraction in the state of Rondônia ...
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De novo assembly and transcriptome analysis of the rubber tree (Hevea brasiliensis) and SNP markers development for rubber biosynthesis pathways.
... For the putative SNP detection, the 50,384 contigs were first mapped with trimmed short sequence reads using the CLC Genomics Workbench. In total, 404,114 putative SNPs were detected, and an average of one SNP per 125 bp ...
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Translocation of cyanogenic glycosides in rubber tree crown clones resistant to South American leaf blight
... Abstract – The objective of this work was to assess the possible transport of cyanogenic glycosides from leaves of rubber tree crown clones (Hevea spp.) resistant to South American leaf blight to the trunk ...
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Contrasts in areas of rubber tree Clones in regard to soil and biomass Carbon stoCks
... out rubber tree clone MDX 624 had the highest estimated root biomass, which is known as an important C input to soil ...to rubber clones in terms of soil C stocks results from differences in terms of ...
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Fuzzy logic and geostatistics in studying the fertility of soil cultivated with the rubber tree
... For each attribute, fuzzy logic (FL) was used to classify the values interpolated by ordinary kriging, generated as files with the .grd extension using the GS+ software (ROBERTSON, 1998). These values were transformed ...
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Biological cycle of Tenuipalpus heveae Baker (Acari, Tenuipalpidae) on leaflets of three rubber tree clones
... in rubber tree crops, because hundreds of varieties (clones) are now available as result of studies developed along decades (Alvarenga & Carmo ...that rubber tree clones present ...
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Prediction of direct and indirect genetic gains and genotypic correlations in rubber tree progenies
... Rubber tree [Hevea brasiliensis (Willd. ex Adr. de Juss.) Muell. Arg.] genetic breeding has a very long selection cycle, which can reach up to 30 years. Therefore, it is important to carry out studies on ...
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Nonpreference of the Lace Bug Leptopharsa heveae Drake Poor (Heteroptera: Tingidae) for Rubber Tree clones
... Laboratory Trials. Clone GT 1 was the most preferred for oviposition (5.3 eggs/leaflet), whereas Fx 4037, RO 46 and IAN 717 were avoided, being chosen practically four times Table 1. Mean number (± SE) of Leptopharsa ...
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Genetic parameters and estimated genetic gains in young rubber tree progenies
... Knowledge of the genetic variability of a population is the basis for breeding and essential to estimate the genetic parameters, which describe the variation levels among progenies, the magnitude of genetic control of ...
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CLONES, SUBSTRATES AND ENVIRONMENTS FOR SEEDLINGS OF RUBBER TREE ROOTSTOCKS
... Rubber tree [Hevea brasiliensis (Willd. ex Adr. de Juss.) Muell.-Arg.] stands out for being the largest source of natural rubber in the world. This raw material that has been required in the ...
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Morpho-anatomical, physiological and biochemical changes in rubber tree seeds
... a series of anatomical adaptations at the end of maturation, mainly in orthodox seeds, in cell membranes and organelles (Moura et al. 2010). Alterations that cause changes in metabolism also occur in recalcitrant seeds, ...
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Doses of controlled-release fertilizer for production of rubber tree rootstocks
... natural rubber has been increasing every year, and Brazil is the world’s 5th largest consumer market (341,580 t) against a total output of 109,800 t (GAMEiRO, ...natural rubber in Brazil could reach 1 ...
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