[PDF] Top 20 Genetic parameters and estimated genetic gains in young rubber tree progenies

... the genetic parameters and to estimate genetic gains in young rubber tree ...years, in a randomized block design, with six replicates and ten ... See full document

... The rubber tree [Hevea brasiliensis (Willd ex ...involved and 25 to 30 years are required until the final choice of clones for large scale planting can be made (Gonçalves et ...investment in ... See full document

... for rubber tree, there is a need to examine the genetic gains obtained by different selection ...(among and within progenies), as well as combined and multi-effect index ... See full document

... 10 and 20% of the plants, it was observed that, in general, the best individuals were those from the top FSP, ...i.e., progenies 33, 34, 37, and 42 (Figure 2 A to H). Some progenies ... See full document

... selection gains (SG) can be obtained directly from the BLUP predictions of the progenies, since these reflect the estimated genotypic values already adjusted to the fixed environmental ...effects. ... See full document

... the genetic variability and divergence among 22 superior rubber tree (Hevea ...Univariate and multivariate analyses were performed using eight quantitative traits (descriptors), ... See full document

... investigated in three-year-old progenies from open-pollinated rubber trees [Hevea brasiliensis ...Twenty progenies were evaluated in a randomized, complete block design replicated three ... See full document

... African and IAC clones, and pertaining to the genetic breeding program of the Agronomic Institute (IAC), Brazil, was ...multivariate parameters and ...employed in multivariate ... See full document

... of rubber tree (Hevea brasiliensis ...increase in yield potential (Gonçalves et ...produce and test new genotypes would require at least 20-30 years, until the final ...the rubber ... See full document

... half-sib progenies, obtained from 22 parental clones phenotypically selected from a ...CEC and placed in polyethylene bags, germinated and taken to the field when they had at least two open ... See full document

... fruits in Brazil. As the culture expanded, an increase in phytosanitary problems was ...leaves, and to estimate genetic parameters and selection gains to scab resistance ... See full document

... importance in the performance of calves from the pre-natal stage (due to pla- cental differences) to the post-natal stage (due to care and milk production ...levels). In the present study, this ... See full document

... shown in Figure ...subjective and can create some difficulties in determining the number of groups formed, as there is no statistical criterion to determine them, a cut-off point (HAHSLER & ... See full document

... 45 rubber tree genotypes ...Brazil) and six wild species of Hevea ...lyophilized young leaves using the CTAB method (Hoisington et ...Amazonian, and IAC ...Asia in 1876, which ... See full document

... bias in the esti- mation of the additive variance tends to be considerable (Table ...genes and different gene frequencies are considered (Table ...recessive, and dominant and reces- sive ... See full document

... gain and is considered promising for selection of superior ...progenies. In a cycle of recurrent selection that preceded the population evaluated in this study, Silva, Viana, Gonçalves, Amaral ... See full document

... weight and height at the withers at 24 months of age was not significant, unlike what was found in the literature for English Thoroughbred (Thompson & Smith, 1994) and Pantaneiro horses (Santos ... See full document

... of genetic gains in grain yield (GY) have reached values of 19% in the second selection cycle in relation to the first cycle, and were obtained by Karmakar and Bhatnagar ... See full document

... parents and trees for cloning in full-sib progeny tests of Eucalyptus ...hybrid progenies were evaluated in the north, northwest and central state of Minas Gerais, Brazil, in a ... See full document

... interested, and that early and accurate selection can be performed based on the second crop data (yield data), it is important to establish the effect of such selection on other non-directly selected ... See full document