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《Journal of Fujian Normal University(Natural Science Edition)》 1984-02
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Studies on the Isozymes of the Progenies of Sweet Potato X Cassava

Wang Ting-zhang Wang Fang-ping (Department of Biology, Fujian Teachers University)  
Three strains (T_(25), A_(52), B_1F_1) were obtained by a remote hybridization-sweet potato (Ipomaea batatas L.)X cassava (Manihot utilissima Pohl). The hybrid strains showed some characters like the male parent(cassava).We studied the peroxidase, cytochrome oxidase and esterase isozymes of the parents and their progenies by electrophoresis (tested for 5 times, replicated twice each time). The electrophoretic patterns were scanned. Analysing the electrophoretograms of the different isozymes, we found several bands which were common in both parents. These alike bands in the parents might be the foundation and possibility of success in remote hybridization. Altho the zymograms of the three hybrid strains were mostly like the maternal pattern but there also appeared some complementary and new bands. This symptom might mean that some paternal genes (DNA segments) had been integrated into the maternal genome. Therefore, these three stains might be considered as true hybrids.
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