The genetics of the juvenile phase in avocado and its application for breeding

• Published in: Journal of the American Society for Horticultural Science Vol. 117; no. 6; pp. 981 - 984
• Main Authors: Lavi, U. (Agricultural Research Organization, Bet Dagan, Israel.), Lahav, E, Degani, C, Gazit, S
• Format: Journal Article
• Language: English
• Published: Alexandria, VA American Society for Horticultural Science 01.11.1992
• Subjects: AGE; Agronomy. Soil science and plant productions; AMELIORATION DES PLANTES; Biological and medical sciences; Breeding schemes. Varia; DESCENDANCE; EDAD; ESTADO JUVENIL DE LAS PLANTAS; ETAPAS DE DESARROLLO DE LA PLANTA; FITOMEJORAMIENTO; FLORACION; FLORAISON; FRUCTIFICACION; FRUCTIFICATION; Fundamental and applied biological sciences. Psychology; GENETICA; Genetics and breeding of economic plants; GENETIQUE; HINCHAMIENTO DE LA SEMILLA; PERSEA AMERICANA; Plant breeding: fundamental aspects and methodology; PROGENIE; REMPLISSAGE DU GRAIN; STADE DE DEVELOPPEMENT VEGETAL; STADE JUVENILE DES PLANTES; VARIACION GENETICA; VARIATION GENETIQUE; VARIEDADES; VARIETE; Dicotyledones; Genetic improvement; Angiospermae; Persea americana; Flowering; Spermatophyta; Yield; Fruit tree; Lauraceae; Age
• ISSN: 0003-1062; 2327-9788
• DOI: 10.21273/JASHS.117.6.981

Avocado (Persea americana Mill.) progeny that originated from 11 crosses (both self-pollinations and crosses between cultivars) were evaluated for the length of their juvenile period. Time to first flowering, "flowering age," and time to first fruit production, "fruiting age," were recorded for each progeny. The mean values for both ages, the SD, and the progeny distribution were calculated. Significant statistical differences in flowering age and fruiting age between various progeny populations were detected. No differences were detected between self-pollinated plants and crosses. The time until first flowering was found to be the limiting factor in evaluation of seedlings