Development of disease resistant fenugreek for Western Canada.
Date
2018
Authors
Subedi, Udaya
University of Lethbridge. Faculty of Arts and Science
Journal Title
Journal ISSN
Volume Title
Publisher
Lethbridge, Alta. : Universtiy of Lethbridge, Department of Biological Sciences
Abstract
Cercospora leaf spot (CLS) caused by Cercospora traversiana is an important phyto-pathological problem of fenugreek (Trigonella foenum graecum), a multiuse legume crop. Knowledge about the inheritance of genes controlling CLS resistance is essential when selecting suitable breeding approaches while information about epidemiological factors affecting the disease can help develop new control strategies. Our greenhouse and field experiments showed CLS resistance in fenugreek (L3717 and PI138687) to be governed by a single dominant gene which is moderately heritable (46% narrow sense heritability). This indicates a relatively simple pathway for transfer of genes to adapted fenugreek cultivars. Rapid screening techniques (detached leaf assay and whole plant assay) were developed to identify the degree of resistance to C. traversiana in fenugreek genotypes. Several epidemiological factors such as temperature, physical injury (wounding), level of host resistance, plant age and inoculum concentration were found influencing CLS severity in controlled environment conditions.
Description
Keywords
Fenugreek -- Diseases and pests -- Research -- Canada, Western , Fenugreek -- Disease and pest resistance -- Genetic aspects -- Research -- Canada, Western , Cercospora -- Research , Cercospora leaf spot , fenugreek cultivars , Cercospora traversiana , plant disease resistance , Dissertations, Academic