capítulo ix: estimación de parámetros genéticos para el carácter rendimiento y sus componentes primarios en un cruzamiento dialélico entre diferentes líneas de tomate, lycopersicon esculentum mill

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ID: 229055
1994
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Abstract
<p>This paper reports the results of a study on estimation of genetic parameters of yield, number of fruits per plant and average fruit weight characters in tomato, Lycopersicon esculentum, Mill. The experimental material consisted of four inbred lines and all possible F<sub>1</sub>'s from these lines (not including reciprocals). Statistical and genetic analysis were made by model 2, method 2 proposed by Griffing (1956). Non-additive gene effects which considerable higher than the additive gene effects wich in turn were also significant for the characters yield and number of fruits per plant. Both non additive gene effects and additive gene effects were significant for the character average fruit weight. A positive correlation was found between yield and average fruit weight. Yield was negatively correlated with number of fruit per plant. The average fruit weight was negatively correlated with number of fruits per plant. In as much non-additive effects are important in yield and number of fruits per plant a program exploiting heterosis should prove effective in improvement these characters. A program designed for simultaneous improvement for both additive and non-additive gene action should provide improvement in average fruit weitht.</p>
<p> En una población dialélica, compuesta por cuatro líneas endocriadas y todos los posibles híbridos F1, sin incluir los recíprocos, se estimaron los principales parámetros genéticos para el carácter rendimiento y sus componentes primarios. El análisis genético-estadístico se realizó utilizando el modelo 2, método 2 propuesto por Griffing (1956). Los efectos genéticos no aditivos fueron más importantes y significativos para los caracteres rendimiento y número de frutos por planta. Para el carácter peso promedio de fruto, tanto los efectos génicos no aditivos como aditivos fueron importantes y significativos. Se encontró correlación positiva entre rendimiento y peso promedio de fruto. El rendimiento estuvo correlacionado negativamente con el número de frutos por planta. El peso promedio de fruto estuvo correlacionado negativamente con el número de frutos por planta. Se discuten algunos métodos de mejoramiento que se pueden usar en esta especie con base en los parámetros genéticos obtenidos.</p>
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Authors Estrada Salazar Edgar Iván, Vallejo Cabrera Franco Alirio
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Journal Rapid communications in mass spectrometry : RCM
Year 1994
DOI
DOI not found
URL
http://revistas.unal.edu.co/index.php/acta_agronomica/article/view/15559
Keywords
cruzamiento dialélico

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