Alternaria incidence in some alloplasmic lines of Indian mustard (Brassica juncea (L.) Coss.) |
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Authors: | S. S. Banga K. S. Labana B. N. Medhi |
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Affiliation: | (1) Department of Plant Breeding, Punjab Agricultural University, 141 004 Ludhiana, India |
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Abstract: | Summary The cytoplasmic substitution lines of Brassica juncea (L.) Coss were evaluated for their field resistance to Alternaria blight (Alternaria brassicae). The euplasmic B. juncea cv. RLM 198 had a mesothetic reaction while alloplasmic B. juncea lines with cytoplasms of B. campestris, B. chinensis, and B. japonica were highly susceptible. B. nigra cytoplasm did not have any effect on the disease reaction of the B. juncea genome. However, the alloplasmic lines with the cytoplasm of B. napus and B. carinata revealed a comparatively higher degree of resistance. The study underlined the utility of cytoplasmic manipulations in modifying the phenotypic expression of nuclear genes. |
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Keywords: | Indian mustard Brassica juncea Alternaria Alloplasm Nucleo-cytoplasmic interactions |
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