scholarly journals GENETIC PARAMETERS ON COMBINATION PROVENANCE-PROGENY TEST OF Araucaria cunninghamii ORIGIN FROM MANOKWARI (PAPUA) IN BONDOWOSO, EAST JAVA

2015 ◽  
Vol 4 (2) ◽  
pp. 129
Author(s):  
Dedi Setiadi ◽  
M. Anis Fauzi
1977 ◽  
Vol 56 (1) ◽  
pp. 121-146 ◽  
Author(s):  
Alan Emsley ◽  
G.E. Dickerson ◽  
T.S. Kashyap

Author(s):  
A R Hariansyah ◽  
A Raharjo ◽  
A Zainuri ◽  
Y Parwoto ◽  
D Prasetiyo ◽  
...  

1983 ◽  
Vol 25 (5) ◽  
pp. 502-508 ◽  
Author(s):  
G. C. C. Tai

This paper attempts to establish confidence intervals for five genetic parameters obtained from progeny test experiments. The influence of numbers of replicates and genotypes used in an experiment on the precision of estimating genetic parameters is discussed based on the structure of the intervals. Data of a progeny test experiment of the potato are then analyzed for determining a suitable selection scheme for quantitative traits in a breeding program.


2011 ◽  
Vol 7 (6) ◽  
pp. 1147-1158 ◽  
Author(s):  
W. Patrick Cumbie ◽  
Fikret Isik ◽  
Bailian Li ◽  
Barry Goldfarb

Bragantia ◽  
2010 ◽  
Vol 69 (1) ◽  
pp. 39-47 ◽  
Author(s):  
Evandro Vagner Tambarussi ◽  
Alexandre Magno Sebbenn ◽  
Mário Luiz Teixeira de Moraes ◽  
Léo Zimback ◽  
Edwin Camacho Palomino ◽  
...  

The aims of this work were to estimate the coefficient of relatedness within families and the genetic parameters for growth related traits in a progeny test from an open-pollinated variety of Pinus caribaea Morelet hondurensis Barret & Golfari, established in Mato Grosso do Sul State, Brazil. The experimental design was the triple 10 x 10 lattice, with 96 families, three replicates, and ten plants per plot. Fourteen years after planting, the trial was measured for the following traits: total height, diameter at breast height (DBH), and true volume. The estimation of coefficients of relatedness within family from microsatellite loci indicated that families are true half-sibs (^r xy = 0.253). Thus, the additive genetic variance (σ2A) can be estimated assuming that the genetic variance among progenies (σ2p) accounts for ¼ of additive genetic variance (^σ2A = 4^σ2p). The estimative of heritability coefficients at individual level (h i²) was relatively high (0.28 for DBH and 0.44 for height). The heritability coefficient considering the average families (h m²) was also high, ranging among the traits from 0.50 to 0.58. These results suggest that the population can be improved by both massal and among families selection. Additionally, the estimated genetic gains with sequential selection among and within families were high (ranging from 8.92% for height to 37.56% for volume), demonstrating that this method of selection can generate high genetic improvement.


2021 ◽  
Vol 800 (1) ◽  
pp. 012044
Author(s):  
D Setiadi ◽  
Mashudi ◽  
Y Hadiyan ◽  
M Susanto ◽  
L Baskorowati ◽  
...  

2020 ◽  
Author(s):  
R. A. Ramos Veintimilla ◽  
O. Murillo Gamboa ◽  
L. A. Gallo

La ESPOCH en 2 016 inició un programa de mejoramiento genético con Juglans neotropica Diels, con el objetivo de potencializar su uso comercial y restaurar ecosistemas forestales degradados en la sierra ecuatoriana. En febrero de 2 018, en la granja Tunshi - ESPOCH, con una temperatura media anual de 13,8 ∘C, precipitación media anual de 835,6 mm, altitud de 2 700 msnm y en estepa espinosa Montano Bajo (Holdrige 1993). Se estableció un ensayo genético con 38 familias de medios hermanos, provenientes de las procedencias Chimborazo, Tungurahua, Bolívar y Otras. En un diseño de bloques incompletos al azar, con 19 repeticiones; la unidad experimental fue una planta. Se evaluó la supervivencia, altura total (cm), diámetro del fuste a 5 cm del suelo, y presencia temprana de ramas; Los datos fueron analizados en SELEGEN, para obtener los parámetros genéticos. A los 10 meses de evaluación, la heredabilidad individual y familiar son aún bajos, pero significativos en las variables de crecimiento (procedencias > 0,38 para altura total y > 0,31 para DAC). la variación genética entre familias duplica a la variación genética entre procedencias (2,29 a 1,15, respectivamente). El ranking entre procedencias en las variables evaluadas, encabeza la procedencia Chimborazo, mientras que la procedencia Tungurahua ocupa casi siempre los últimos lugares. La colección base de mejoramiento de J. neotropica, plantada en la ESPOCH presenta una amplia variabilidad genética. La táctica de reunir al menos 10 familias por procedencia y por lo menos 3 procedencias, ha mostrado eficiencia para contar con una población base de calidad y plantar una fuente semillera genéticamente fuerte para esta especie importante. In 2 016 ESPOCH started a breeding program with Juglans neotropica Diels, with the intent of developing its commercial use and restoring degraded forest ecosystems in the Ecuadorian highlands. In February 2 018, in the farm Tunshi ESPOCH with an average temperature of 13.8 ∘ C, annual rainfall of 835.6 mm, altitude of 2700 m. one progeny test comprised 38 sib families, sourced from Chimborazo, Tungurahua, Bolivar and other sources. In a design of randomized incomplete blocks, with 19 repetitions; The experiment evaluated plant survival, overall height (cm), stem diameter 5 cm of soil, and early presence of side branches; Genetic parameters were obtained in SELEGEN. At 10 months of evaluation, heritability individual and family are still low, but significant in the variables of growth analyzed (provenances> 0.38 for total height and> 0.31 for DAC). Genetic variation between families duplicates genetic variation among provenances (2.29 to 1.15). The ranking among provenances in all variables is lead by Chimborazo (CH) plants, while the Tungurahua (TUN) almost always origin occupies the last places in growth and vigor. The genetic improvement base collection of J. neotropica planted by ESPOCH is extremely rich and with a wide genetic variability. The strategy of bringing together at least 10 families per provenance and no less than 3 sources, has proved efficient to capture a base population. Palabras claves: Juglans neotropica Diels, procedencias, ensayo de progenies, Mejoramiento Genético. Keywords: Juglans neotropica Diels, provenance, progeny test, Breeding.


Diabetes ◽  
1997 ◽  
Vol 46 (4) ◽  
pp. 622-631 ◽  
Author(s):  
P. Dussoix ◽  
M. Vaxillaire ◽  
P. B. Iynedjian ◽  
J. M. Tiercy ◽  
J. Ruiz ◽  
...  

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