RESUMO -o maracujazeiro pertence ao gênero Passiflora, considerado o de maior importância econômica da família Passifloraceae. O objetivo do trabalho foi estimar para o maracujazeiro-azedo parâmetros e valores genotípicos pelo procedimento Reml/BluP em nível de progênie. Foram avaliadas 27 progênies de meiosirmãos oriundas do segundo ciclo de seleção recorrente conduzido na uenF, selecionadas via índice de seleção. as características avaliadas foram: número de frutos por parcela (nF); massa total de frutos por parcela (mTF) e massa média de frutos (mmF). os valores genéticos foram estimados por meio do Software Selegen, utilizando o procedimento Reml/BluP. nas estimativas dos parâmetros genéticos via Reml, as duas características ligadas diretamente à produção e, portanto, consideradas as mais importantes, nF e MTF apresentaram estimativas de herdabilidade média de progênies de 0,395 e 0,439, respectivamente. Na seleção e nas estimativas dos ganhos via BluP, o coeficiente de coincidência revelou concordância do resultado da seleção entre as progênies, mostrando que para as três características avaliadas, as mesmas 8 progênies são superiores para as três características simultaneamente. a metodologia Reml/BluP mostrouse adequada para a avaliação, possibilitando obter estimativas dos parâmetros genéticos e fenotípicos que revelaram a possibilidade de sucesso com a seleção de progênies superiores, com ganhos simultaneamente de 18,02%, 23,08% e 9,65% para NF, MTF e MMF, respectivamente. Termos para indexação: Passiflora edulis Sims, modelos mistos, seleção recorrente. INTRAPOPULATION RECURRENT SELECTION IN SOUR PASSION FRUIT BY MIXED MODELSABSTRACT -Passion fruit belongs to the family Passifloraceae, and the genus Passiflora is regarded the most economically important. The aim of this study was to estimate parameters and genotypic values by REML/ BLUP method in level of progenies. A total of 27 half-sib progenies of the sour passion fruit derived from the second cycle of recurrent selection conducted in UENF, selected by the selection index were evaluated. The characteristics evaluated were: number of fruits (NF), total fruit mass (TFM) and fruit average mass (FAM). Breeding values were estimated by the Software SELEGEN using the procedure REML/BLUP. In the estimates of genetic parameters by REML, both characteristics directly linked to production and thus considered the most important (NF and TFM) showed average heritability estimates of progenies of 0.395 and 0.439, respectively. The selection and BLUP estimates of earnings by the coefficient of coincidence revealed agreement of the results of the selection among the progenies, showing that for all traits the same 8 progenies are superior to the three characteristics simultaneously. The REML/BLUP methodology was adequate for evaluation, allowing to obtain estimates of genetic and phenotypic parameters revealed that the possibility of successful selection of superior progenies, simultaneously with gains of 18.02%, 23.08% and 9.65% for NF, TFM and FAM, respectively.
Passion fruit belongs to the family Passifloraceae, and the genus Passiflora is regarded the most economically important. The present study aimed to quantify genetic diversity among progenies of sour passion fruit, in order to define potential heterotic groups, based on morpho-agronomic descriptors, using the Ward-MLM procedure. It is useful for generation advancement in the passion fruit breeding program, via recurrent selection, under development at the Universidade Estadual do Norte Fluminense Darcy Ribeiro (UENF). For such, 81 full-sib progenies belonging to the third recurrent selection cycle (C03) were assessed. Twenty-three descriptors were used, five of which were qualitative and 18, quantitative. The quantitative and qualitative variables were analyzed simultaneously using the Ward-MLM procedure for the composition of groups. The likelihood function determined that five was the ideal number of groups. The Ward-MLM classification strategy for morpho-agronomic data analysis allowed the formation of five groups into 26, 5, 15, 16 and 19 progenies. A certain distance was observed for group III, compared to the other groups while groups I, II, IV and V showed approximation. This greater distance of group III compared to the other groups may indicate crosses, aiming at the exploitation of heterosis, for the pyramiding of favorable alleles for traits of interest. The Ward-MLM statistical procedure was a useful tool to detect genetic divergence and group progenies using simultaneously quantitative and qualitative variables.
The increasing demand for raw material for multiple uses of forest products and byproducts has attracted the interest for fast growing species, such as the Australian Cedar (Toona ciliata), which presents high productive and economic potential. This study aimed at estimating genotypic parameters and values for the species through the use of the BLUP procedure, at individual level, with repeated measures, by means of the conventional evaluation procedures and the introduction of innovative digitalization of the measurements by digital camera with the images provided by the Imagej software system. The main objective is to subsidize the beginning of a breeding program for the species. The assays were carried out in private properties, in plantations located in the state of Rio de Janeiro, Brazil. The results generated by three evaluations revealed that the image digital analysis is adequate to quantify characteristics of Toona ciliata. It is also an effective and accurate alternative to minimize the costs of data collection in evaluations with the species. There was high accuracy for the characters plant height, diameter at breast height and cylindrical volume. Out of the 90 genotypes evaluated, 38 expressed genotypic values predicted for the diameter at breast height higher than the general average of this character, 33 for the cylindrical volume and 49 for height, allowing gains of up to 24.9 % in average for cylindrical volume. The method of mixed models (REML/BLUP) applied via the SELE-GEN software system, using the BLUP procedure at individual level and repeated measures in each individual proved to be adequate to estimate the genetic parameters and predict genotypic values in situations of unbalanced data. Therefore, it is very useful and practical for Toona ciliata genetic breeding programs.
Hortic. bras., v.33, n. 4, out. -dez. 2015 horticultura horticultura brasileira brasileira O cultivo das abóboras (Cucurbita spp.), bem como de outras espé-cies da família Cucurbitaceae, desempenha importância social para geração de empregos diretos e indiretos, uma vez que demanda grande quantidade de mão-de-obra desde o plantio até a comercialização (Resende et al., 2013). No Brasil, os cultivos comerciais de abóbora utilizam sementes híbridas, e nas pequenas propriedades rurais são usadas sementes oriundas de polinização abertas, principalmente, variedades locais.A utilização de variedades locais contribui para o resgate e aumento da utilização da biodiversidade local frente ao processo da agricultura moderna que visa a uniformização das cultivares (Gavioli, 2009
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