Effect of Various Soil Media on Disease Severity of <i>Fusarium</i>Wilt in Watermelon
Effect of Various Soil Media on Disease Severity of <i>Fusarium</i>Wilt in Watermelon作者机构：Horticultural Sciences Department and Tropical Research & Education Center University of Florida Homestead FL USA Institute of Plant Breeding Genetics & Genomics and Department of Horticulture University of Georgia Athens GA USA
出 版 物：《American Journal of Plant Sciences》 (美国植物学期刊（英文）)
年 卷 期：2020年第11卷第12期
页 面：1890-1898页
学科分类：07[理学] 0701[理学-数学] 070101[理学-基础数学]
主 题：Breeding Citrullus lanatus Pathogen Fusarium oxysporum Race 1 Soil-Type AUDPC
摘 要：Fusarium wilt is a major disease of watermelon (Citrullus lanatus) caused by Fusarium oxysporum f. sp. niveum (Fon). Use of host resistance is the most effective management strategy for the disease, and a major objective for breeding programs. Screening assays rely on the ability to discriminate resistant and susceptible genotypes in segregating populations. However, complex interactions between Fon and the soil environment can influence symptom development and disease severity rating. In the current study, severity of Fusarium wilt (race 1) in sand-peat (1:1 v/v), sand-perlite (1:1), sand-peat-vermiculite (4:1:1), peat-perlite (1:1) and Fafard 3B potting media was compared among five watermelon cultivars: Calhoun Gray (resistant), SunSugar (resistant), Allsweet (moderately resistant), Sugar Baby (susceptible) and Charleston Gray (susceptible). Plant biomass (average dry weight/plant) was lowest in peat-perlite (1.67g) and sand-peat (2.16 g), and was significantly different (α = 0.05) from that of sand-pe
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