Genetic Analysis of Tea Gray Blight Resistance in Tea Plants

Japan Agricultural Research Quarterly
ISSN 00213551
NII recode ID (NCID) AA0068709X
Full text
36-03-04.pdf279.62 KB

Tea gray blight caused by Pestalotiopsis longiseta SPEGAZZINI is a severe disease in tea fields in Japan. The resistance of tea plants to the disease was found to be controlled by 2 independent dominant resistance genes Pl1 and Pl2, based on parent-offspring genetic analysis. There were 9 genotypes for resistance to P. longiseta in tea plants. Six genotypes Pl1Pl1Pl2Pl2, Pl1Pl1Pl2pl2, Pl1Pl1pl2pl2, Pl1pl1Pl2Pl2, Pl1pl1Pl2pl2, Pl1pl1pl2pl2 were resistant, 2 genotypes pl1pl1Pl2Pl2, pl1pl1Pl2pl2 were moderately resistant and one genotype pl1pl1pl2pl2 was susceptible. Since the cultivars harboring the Pl1 gene with homozygosity always produced resistant plants to the disease in any cross combinations, they could become very important materials for the breeding of cultivars resistant to the disease.

Date of issued
Creator TAKEDA Yoshiyuki
Subject

epistatic effect

genotype

phenotype

Publisher Japan International Research Center for Agricultural Sciences
Available Online
NII resource type vocabulary Journal Article
Volume 36
Issue 3
spage 143
epage 150
DOI 10.6090/jarq.36.143
Rights Japan International Research Center for Agricultural Sciences
Language eng

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