Introduccion a la Genetica Cuantitativa by D. S. Falconer at – ISBN – ISBN – ACRIBIA – – Softcover. DownloadIntroduccion a la genetica cuantitativa falconer pdf. PDF 5. Quarantine 13A 57EF exe C WINDOWS Temp NavBrowser. Introduccion a. Introduccion a La Genetica Cuantitativa Falconer PDFThis action might not be possible to undo. Are you sure you want to continue?.

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An inverse relation of Cookies are little nuggets of information that web servers store on your computer to make it easier for them to keep track of your browsing session. However, the existing relationship among different HSP derived from the same half-grandmother was not sufficient to differentiate the gains from the two methodologies. First, the relationship of introxuccion between the new HSP new cycle and the old HSP previous cycle is irrelevant.

Douglas Scott Falconer – Alchetron, The Free Social Encyclopedia

No supplementary irrigation was falconet. In this method, the genetic gains were identical to those obtained based on the BLP, showing its efficiency in isolating the additive component, responsible for the heritability and the expected gain, from the phenotypic variance.

The pedigree system, although unnecessary for the ucantitativa use of the SAWHSP methodology, allowed the prediction of an increase in the inbreeding of the population in the long term SAWHSP selection when recombination is simultaneous to creation of new progenies.

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We never store sensitive information about our customers in cookies. This implies that greater care with the effective size of the population must be taken with this method.

Table II – Twenty half-sib progenies HSP selected on the basis of phenotypic value, in decreasing order averages adjusted for corn ear weight. Sufficient genetic variability was observed in the fourth selection cycle of the CMS population allowing the continuation of the breeding program, with an expected gain of 9. Similarly, when the kinship was considered in the joint analysis, the genetic gains were close 9. Statistical Genetics and Plant Breeding. These kinship coefficients were estimated for half-sib progenies, with remnant seeds, based on the following expressions: The pedigree system, although unnecessary for HSP selection, allowed the prediction of an increase in the rate of inbreeding in the long term with the originally proposed scheme, when recombination is simultaneously carried out with the creation of new progenies.


This difference was attributed to the genotype x environmental interaction, whose component was large in the three cycles, being larger than the estimate of genetic variance among the HSP in this cycle Table I. The authors would like to thank the valuable collaboration of Drs. However, the estimates of gain obtained by the BLP were fairly similar to those obtained based on the phenotypic values, showing that the genetic values seem to be under the same influences mentioned by Arriel et al.

In both cases you should know how to switch cookies back on! For the male rows a balanced mixture of seeds from the ears of all new HSP should be used. In these results, it was shown that the original SAWHSP, quoted by Paterniani and Miranda Filhois an efficient method, even when the relationship of the selected progenies is not considered.

On the other hand, when dealing with genetic values, this should not happen and the expected gains should be nearer the observed gains. Services on Demand Journal. This lack of agreement is partially due to the fact that the estimates of the expected gains are based on phenotypic values, which suffer from environmental influences and from genotype x environment interaction.

Besides breeding strategies, there are also biometric methodologies with a strong theoretical base which could be used by plant breeders to efficiently identify superior genotypes and obtain greater gains. The literature has often presented different results among the expected gains and the observed gains from selection. Although longer and more detailed studies are necessary on the importance of the pedigree in the SAWHSP, the results from the present study showed that the use of this type of relationship in the routine assessment of maize half-sibs may be disregarded.

For example, at loot. Among these are BLUP best linear unbiased predictorwhich classifies individuals submitted to selection using a function of the observed data and a matrix of genetic and residual variances and covariances of previously known traits Henderson, On the other hand, it can be seen that the BLP was influenced by extreme phenotypic values, because it distributes this influence equally to all the progenies of the same family.


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This shows that as the genetic variance increases in relation to the residual variance, the BLP tends to select the same individuals that would be selected based on greater phenotypic values. All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License.

This doesn’t genetuca that anyone who uses your computer can access your account information as we separate association what the cookie provides from authentication. There are several examples in the literature which show gains from truncated selection for yield in various maize populations. There was a tendency in the BLP methodology to select a greater number of related progenies because of the previous generation pedigree than the other method.

This genealogical structure is disregarded in the original methodology quoted by Paterniani and Miranda Filhobased on two assumptions. Genetixa the majority of cases the expected gains are overestimated, which was also shown for this population by Arriel et al. P and Ramalho, M. If you have persistent cookies enabled as well, then we will be able to remember you across browser restarts and computer reboots.

Table IV also shows that the BLP selected a greater number of progenies stemming from the same ancestor, totaling 11 different maternal half-grandmothers. A activation email has been sent to you. It also contributed less to the reduction in the effective size of the population, and lntroduccion reduced future problems with inbreeding.

Let’s connect Contact Details Facebook Twitter. Sometimes, we also use a cookie to keep track of your trolley contents. This may result in a reduction in the effective size of the population in the more advanced selection generations and consequently in an increase in inbreeding.