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Quantitative genetic analysis of traits in avocado cultivars.

Tipo de material: TextoTextoSeries ; Plant Breeding, 106(2), p.149-160, 1991Trabajos contenidos:
  • Lavi, U
  • Lahav, E
  • Genizi, A
  • Degani, C
  • Gazit, S
  • Hillel, J
Tema(s): Recursos en línea: Resumen: This research is aimed at quantitative genetic analysis of several avocado traits and cultivars. The experimental material consists of our avocado breeding project in which data were collected from several crosses as well as selfings of cultivars. Parenthood was determined by isozymes and the seedling progenies were assessed for eight traits. A biometrical genetic approach for analysis of this breeding project is presented. Genetic profiles of the traits and cultivars were detailed by several characteristics: level of heterozygosity and dominance deviation, dominance of alleles, dominance direction, general evaluation of additive and non?additive genetic variance, maternal inheritance, and allelic differences among the various cultivars in major genes controlling the same quantitative trait. Five avocado cultivars: 'Fuerte', 'Hass', 'Ettinger', 'Tova', and 'Rosh?Hanikra', were characterized separately for each trait. Practical conclusions for the breeder regarding economically important quantitative traits are discussed.
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This research is aimed at quantitative genetic analysis of several avocado traits and cultivars. The experimental material consists of our avocado breeding project in which data were collected from several crosses as well as selfings of cultivars. Parenthood was determined by isozymes and the seedling progenies were assessed for eight traits. A biometrical genetic approach for analysis of this breeding project is presented. Genetic profiles of the traits and cultivars were detailed by several characteristics: level of heterozygosity and dominance deviation, dominance of alleles, dominance direction, general evaluation of additive and non?additive genetic variance, maternal inheritance, and allelic differences among the various cultivars in major genes controlling the same quantitative trait. Five avocado cultivars: 'Fuerte', 'Hass', 'Ettinger', 'Tova', and 'Rosh?Hanikra', were characterized separately for each trait. Practical conclusions for the breeder regarding economically important quantitative traits are discussed.

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