Estimation of outcrossing rate in a breeding population of Eucalyptus urophylla with dominant RAPD and AFLP markers

1997 ◽  
Vol 95 (5-6) ◽  
pp. 842-849 ◽  
Author(s):  
F. A. Gaiotto ◽  
M. Bramucci ◽  
D. Grattapaglia
2004 ◽  
Vol 35 (1) ◽  
pp. 40-43 ◽  
Author(s):  
S. Tsuji ◽  
K. Itoh ◽  
S. Sasazaki ◽  
H. Mannen ◽  
K. Oyama ◽  
...  

2011 ◽  
Vol 46 (8) ◽  
pp. 899-904 ◽  
Author(s):  
Carlos Antonio Fernandes Santos ◽  
Francisco Pinheiro Lima Neto

The objective of this work was to estimate outcrossing rates between Haden and Tommy Atkins mango cultivars, using AFLP and microsatellite markers. Progenies of an isolated 'Haden' plant, identified in a 'Tommy Atkins' commercial orchard, in Petrolina, PE, Brazil, were analyzed. Total DNA was isolated from the progeny leaves and used for AFLP and microsatellite reactions. Multilocus outcrossing rates (t m) were estimated by direct count of AFLP or microsatellite markers and by the mLTR software. Outcrossing rates ranged from 0.85 to 0.87 with the analysis based on seven AFLP markers, and from 0.83 to 0.91 based on three microsatellite primers. No unexpected band patterns were observed for 'Haden' and 'Tommy Atkins'. The estimates obtained with the mLTR software were close to those obtained by direct AFLP and microsatellite allele counting, which indicates that the multilocus model was appropriate for this kind of study. The microsatellites mMiCIR005, mMiCIR030, and mMiCIR036 can be used to elucidate the origin of 'Haden' and 'Tommy Atkins' seedlings.


2019 ◽  
Vol 15 (3) ◽  
pp. 224
Author(s):  
Rayka Kristian Alves Santos ◽  
Carmela Amelia Scipioni ◽  
Theilon Henrique De Jesus Macedo ◽  
Carol Chaves Nascimento ◽  
Joelma Da Silva Santos ◽  
...  
Keyword(s):  

O objetivo deste trabalho foi selecionar em casa de vegetação bactérias que promovam o crescimento de plantas de eucalipto. O experimento foi realizado com o clone AEC 144 de Eucalyptus urophylla, no período de Junho a Agosto de 2016, com duração de 45 dias, tendo como tratamento 14 isolados bacterianos e 1 controle sem inoculação, com 4 repetições e perfazendo 60 parcelas, disposto em delineamento inteiramente casualizado. Foi avaliado a altura das plantas, diâmetro, índice de robustez das mudas e a contagem do número de folhas das plantas. Foi realizado o teste de Skot knott a 5% com as médias dos tratamentos. Os isolados bacterianos nativos de eucalipto UESBJNR32E, UESBJNR6E, UESBJNR5E, UESBJNR3E, UESBJMR6E, UESBJMR21E promovem o crescimento em plantas de eucalipto.


2014 ◽  
Vol 40 (10) ◽  
pp. 1877
Author(s):  
Feng-Gang ZAN ◽  
Cai-Wen WU ◽  
Xue-Kuan CHEN ◽  
Pei-Fang ZHAO ◽  
Jun ZHAO ◽  
...  

2010 ◽  
Vol 36 (2) ◽  
pp. 123-127 ◽  
Author(s):  
Jia-shu Lϋ ◽  
Li-ning ZHAO ◽  
Gong-gu ZANG ◽  
Chao-hua CHENG ◽  
Qing TANG ◽  
...  

Genetics ◽  
2001 ◽  
Vol 158 (2) ◽  
pp. 787-809 ◽  
Author(s):  
Maria-Teresa Cervera ◽  
Véronique Storme ◽  
Bart Ivens ◽  
Jaqueline Gusmão ◽  
Ben H Liu ◽  
...  

Abstract Populus deltoides, P. nigra, and P. trichocarpa are the most important species for poplar breeding programs worldwide. In addition, Populus has become a model for fundamental research on trees. Linkage maps were constructed for these three species by analyzing progeny of two controlled crosses sharing the same female parent, Populus deltoides cv. S9-2 × P. nigra cv. Ghoy and P. deltoides cv. S9-2 × P. trichocarpa cv. V24. The two-way pseudotestcross mapping strategy was used to construct the maps. Amplified fragment length polymorphism (AFLP) markers that segregated 1:1 were used to form the four parental maps. Microsatellites and sequence-tagged sites were used to align homoeologous groups between the maps and to merge linkage groups within the individual maps. Linkage analysis and alignment of the homoeologous groups resulted in 566 markers distributed over 19 groups for P. deltoides covering 86% of the genome, 339 markers distributed over 19 groups for P. trichocarpa covering 73%, and 369 markers distributed over 28 groups for P. nigra covering 61%. Several tests for randomness showed that the AFLP markers were randomly distributed over the genome.


2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Adriano dos Santos ◽  
Erina Vitório Rodrigues ◽  
Bruno Galvêas Laviola ◽  
Larissa Pereira Ribeiro Teodoro ◽  
Paulo Eduardo Teodoro ◽  
...  

AbstractGenome-wide selection (GWS) has been becoming an essential tool in the genetic breeding of long-life species, as it increases the gain per time unit. This study had a hypothesis that GWS is a tool that can decrease the breeding cycle in Jatropha. Our objective was to compare GWS with phenotypic selection in terms of accuracy and efficiency over three harvests. Models were developed throughout the harvests to evaluate their applicability in predicting genetic values in later harvests. For this purpose, 386 individuals of the breeding population obtained from crossings between 42 parents were evaluated. The population was evaluated in random block design, with six replicates over three harvests. The genetic effects of markers were predicted in the population using 811 SNP's markers with call rate = 95% and minor allele frequency (MAF) > 4%. GWS enables gains of 108 to 346% over the phenotypic selection, with a 50% reduction in the selection cycle. This technique has potential for the Jatropha breeding since it allows the accurate obtaining of GEBV and higher efficiency compared to the phenotypic selection by reducing the time necessary to complete the selection cycle. In order to apply GWS in the first harvests, a large number of individuals in the breeding population are needed. In the case of few individuals in the population, it is recommended to perform a larger number of harvests.


New Forests ◽  
2021 ◽  
Author(s):  
Liamara Santos Masullo ◽  
Vitória Duarte Derisso ◽  
Gislene Roberta Manarim ◽  
Alexandre de Vicente Ferraz ◽  
José Henrique Tertulino Rocha ◽  
...  

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