Phenotypes and Genotypes Related to Tea Gray Blight Disease Resistance in the Genetic Resources of Tea in Japan

JARQ : Japan Agricultural Research Quarterly
ISSN 00213551
書誌レコードID(総合目録DB) AA0068709X
37-01-05.pdf342.24 KB

The phenotypes related to tea gray blight resistance were evaluated by the artificial inoculation method in the accessions of tea germplasm preserved at the National Institute of Vegetable and Tea Science in Makurazaki, Kagoshima Prefecture. The genotypes of 453 plants including 89 main tea cultivars in Japan were also determined by using the parent-offspring genetic analysis of many cross combinations. A wide variation in the resistance of tea plants to tea gray blight was observed both in terms of phenotypes and genotypes. The majority of the Assam plants (Camellia sinensis var. assamica) showed a high level of resistance and very few variations, both in genotypes and phenotypes. The Japanese native plants (C. sinensis var. sinensis) showed a wider genetic diversity than any other groups of plants in the resistance to tea gray blight. Since many of the tea plants derived from other countries were highly resistant to the disease and harbored 2 Pl1 genes which confer a high level of resistance, they are very important materials for the breeding of cultivars that are resistant to the disease. The phenotype and genotype analysis was found to be very useful to identify doubtful cultivars.

作成者 TAKEDA Yoshiyuki

Camellia sinensis

genetic analysis

genetic diversity

公開者 Japan International Research Center for Agricultural Sciences
国立情報学研究所メタデータ主題語彙集(資源タイプ) Journal Article
開始ページ 31
終了ページ 35
DOI 10.6090/jarq.37.31
権利 Japan International Research Center for Agricultural Sciences
言語 eng