Articles
GENETIC DIVERSITY OF TWENTY THREE STRAINS OF ZIZIPHUS JUJUBA MILL. CV. JUNZAO WITH DIFFERENT LEVELS OF RESISTANCE TO JUJUBE WITCHES’ BROOM DISEASE
Article number
840_54
Pages
391 – 398
Language
English
Abstract
Jujube witches broom (JWB), a destructive disease has spread to all the cultivated areas of jujube and become a production constraint.
Most cultivars of Chinese jujube are sensitive to JWB. Our earlier studies revealed that different strains of the same cultivar showed differential level of resistance to JWB. During 2006-07, 23 strains of Junzao were grafted onto the diseased jujube trees.
Field investigations showed that there were 6 strains with high-resistance, 14 strains with middle-resistance and 3 strains with no-resistance to JWB. At the same time, these 23 strains were employed to study by using AFLP. A total of 128 polymorphic bands were screened by using 10 pair primers.
Among them, 7 bands were related to resistance and 5 bands were related to sensitiveness for JWB. Morphological and genomic differences were evident among different strains of the same cultivar. These results could form the basis for further resistance breeding program.
Most cultivars of Chinese jujube are sensitive to JWB. Our earlier studies revealed that different strains of the same cultivar showed differential level of resistance to JWB. During 2006-07, 23 strains of Junzao were grafted onto the diseased jujube trees.
Field investigations showed that there were 6 strains with high-resistance, 14 strains with middle-resistance and 3 strains with no-resistance to JWB. At the same time, these 23 strains were employed to study by using AFLP. A total of 128 polymorphic bands were screened by using 10 pair primers.
Among them, 7 bands were related to resistance and 5 bands were related to sensitiveness for JWB. Morphological and genomic differences were evident among different strains of the same cultivar. These results could form the basis for further resistance breeding program.
Publication
Authors
Y. Qiao, J. Zhao, T.Y. Wu, Y.R. Yang, M.J. Liu
Keywords
Ziziphus jujube, jujube witches’ broom, genetic diversity, resistance, AFLP marker
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