Assessing genetic variability for Fusarium resistance in three asparagus populations with an in vitro assay

• Published in: Euphytica Vol. 103; no. 1; pp. 131 - 136
• Main Authors: Lassaga, S.L. (Instituto Nacional de Tecnologia Agropecuaria, Parana (Argentina).), Camadro, E.L, Babinec, F.J
• Format: Journal Article
• Language: English
• Published: Dordrecht Springer 01.01.1998; Springer Nature B.V
• Subjects: Agronomy. Soil science and plant productions; Animal populations; Asparagus; ASPARAGUS OFFICINALIS; Biological and medical sciences; Cultivars; DISEASE RESISTANCE; Fundamental and applied biological sciences. Psychology; Fusarium moniliforme; Genetic diversity; Genetics; Genetics and breeding of economic plants; GIBBERELLA FUJIKUROI; IN VITRO SELECTION; Pest resistance; Plant pathogens; Plant tissues; RESISTANCE AUX MALADIES; RESISTENCIA A LA ENFERMEDAD; Seedlings; SELECCION IN VITRO; SELECTION IN VITRO; Varietal selection. Specialized plant breeding, plant breeding aims; Genetic gain; Monocotyledones; Genetic variability; Plant pathogen; Landrace(plant); Plant juvenile growth stage; Genetic parameter; Asparagus officinalis; Fungus resistance; Fungi; Liliaceae; Inoculation; Controlled environment study; Vegetable crop; Recurrent selection; Genetic improvement; Angiospermae; Spermatophyta; Fungi Imperfecti; Fusarium moniliforme; Thallophyta; Cultivar
• ISSN: 0014-2336; 1573-5060
• DOI: 10.1023/A:1018335729277

An in vitro test was used to evaluate populations of one commercial cultivar and two land races of asparagus for resistance to Fusarium moniliforme. Seedlings of sixty-nine half-sib families (HSF) from each land race and 60 HSF from the cultivar were inoculated with a 0.5 ml suspension of 10^sup 7^ conidia/ml and visually scored 30 days later for percentage of affected root tissue. Genetic parameters were estimated and expected gains were calculated according to two selection methods, individual in both sexes and combined within and between HSF. Significant genetic variation was detected in the three populations; however, a greater progress in breeding is expected from the land races populations because the estimations of the additive variance were rather similar (221.86 ± 111.55 and 325.56 ± 128.27) and higher than for the cultivar (86.72 ± 78.38).[PUBLICATION ABSTRACT]