ADAPTABILITY AND DISEASES OF JERUSALEM ARTICHOKE (Helianthus tuberosus) IN QUEBEC

Abstract

An early and a midseason cultivar of Jerusalem artichoke (JA) (Helianthus tuberosus) were better adapted than a late cultivar at Macdonald College and L’Acadie, Quebec, and Ottawa, Ontario. Diseases observed on JA were powdery mildew (Erysiphe cichoracearum), Sclerotinia rot (S. sclerotiorum), and apical chlorosis (Pseudomonas syringae pv. tagetis).Key words: Jerusalem artichoke, Helianthus tuberosus, adaptability, powdery mildrew, Sclerotinia rot, apical chlorosis

VARIABILTY AND STABILTY OF TUBER YIELD OF JERUSALEM ARTICHOKE (Helianthus tuberosus L.) / VARIABILIDAD Y ESTABILIDAD DEL RENDIMIENTO DE TUBERCULOS DEL TOPINAMBO / VARIABILITÉ ET STABILITÉ DU RENDEMENT DU TUBERCULE DE TOPINAMBUR

“…It was encouraging that the highest yielding varieties had a rather stable performance over environments. Good yield stability of a variety is an additional advantage to the well-documented broad adaptability of Jerusalem artichoke as a crop to different environments, including less fertile, marginal soils (Laberg and Sackston, 1987;Pekić et al, 1983).…”

Jerusalem Artichoke (Helianthus tuberosus L.): A Versatile and Sustainable Crop for Renewable Energy Production in Europe

“…In its native environment, several organisms (microorganisms, insects and mammals) interact with JA [1,2,43]. Six different families of bee species have been reported as pollinators of JA, including bumblebees and honeybees which are predominant.…”

“…The first one is favored by excessive N fertilisation, low soil pH, or hydromorphic soils, while the second one is promoted by moisture combined with high temperatures [4]. Also rust caused by Puccinia helianthi and powdery mildew caused by Erisyphe chicoracearum are common JA diseases, although their effect is not limiting for the crop [4,43]. Leaf spot caused by Alternaria helianthi is an emerging disease of JA in tropical regions.…”

“…Concerning insects, damage by aphis and stem maggot are often reported in JA, but as it is known for other insects their impact is largely negligible [4,43]. Pseudomonas syringae pv.tagetis can cause apical chlorosis.…”

“…Pseudomonas syringae pv.tagetis can cause apical chlorosis. Spreading and gravity of this bacterium can be controlled using certified or disease-free seed tubers [4,43].…”