Assessment of Root Rot Resistance in a Collection of Barley Germplasm at the Seedling Stage
LV Er-suo
ZHANG Feng-ying
LIN Rui-ming
BAO Hai-zhu
LIU Zhi-ping
Abstract：This study assessed root rot resistance in a collection of 205 samples of barley germplasm originating domestically and inter-nationally using the method of sprays for inoculating the spore suspension of the pathogen. As a result, 11 and 35 barley samples had high and medium resistance, respectively, to root rot disease, while 156 samples were moderately or highly susceptible to the disease. A clustering analysis was conducted using disease severity as the variable with Euclidean distance of 2. 14, which divided these samples into two groups based on their disease resistance. The first group was considered disease-resistant materials, which comprised 46 sam-ples with medium or high resistance to root rot disease, accounting for 22. 44% of all collected samples. The second group was consid-ered disease-susceptible materials, which consisted of 156 samples with moderate or high susceptibility to the disease, constituting 77. 09% of all samples. The samples resistant to the disease can be used as parental materials for breeding disease-resistant barley varieties. Therefore, the current study laid a foundation for enriching disease-resistant barley germplasm resources in China.
Keywords：BarleyRoot rot diseaseDisease resistance assessment
Publication Date：2015-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 30-34 )