Alfalfa resistance to post-harvest Aspergillus species: Response to selection

Autor:	S. R. Smith, K. M. Wittenberg, V. Babij, C. A. Kimbeng
Rok vydání:	2000
Předmět:	Resistance (ecology) media_common.quotation_subject fungi Longevity food and beverages Forage Plant Science Horticulture Plant disease resistance Biology Agronomy Hay Plant breeding Cultivar Medicago sativa Agronomy and Crop Science media_common
Zdroj:	Canadian Journal of Plant Science. 80:755-763
ISSN:	1918-1833 0008-4220
DOI:	10.4141/p99-079
Popis:	Alfalfa (Medicago sativa L.) cultivar development programs routinely incorporate resistance to fungal diseases that limit forage yield, quality and stand longevity. "Hay molding", caused by saprophytic fungi, reduces forage quality during the post-harvest period, but genetic resistance has not been reported. The objective was to determine the response to selection for post-harvest fungal resistance in alfalfa. Initially, 1144 genotypes from 22 alfalfa cultivars were screened for post-harvest fungal resistance with a combination of Aspergillus species. Forty resistant and 40 susceptible genotypes were selected by measuring percentage of leaf area with fungal coverage. The selected genotypes and their maternally derived half-sib families were screened for resistance to Aspergillus repens. Mean leaf area with fungal coverage was significantly (P
Databáze:	OpenAIRE
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