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- W2017536622 abstract "The uptake and partitioning of nitrogen (N) by maize infected with the parasitic angiosperm, Striga hermonthica was investigated in sand culture in a glasshouse. The purpose was to determine the effect of Striga on N uptake and partitioning in maize. Maize was grown at 22, 66 and 133 mg N per plant and sampled five times. There was no significant Striga ×N interaction in any measured response. Leaf dry matter of Striga -infected maize, averaged over all N treatments, was 92% that of uninfected maize at the four-leaf stage but by the 18-leaf stage it had decreased to 58%. Similarly, stem dry matter of infected maize which was 91% that of uninfected maize at the four-leaf stage was only 42% at the 18-leaf stage. Root dry matter was similar for infected and uninfected maize. N concentration in the leaf, stem and root declined asymptotically from the first to the last sampling date for both infected and uninfected maize. The asymptotic value of N concentration in Striga -infected maize was 16% greater in the leaf, 55% in the stem, and 21% in the root than in uninfected maize. The concentration of N in Striga was higher than in maize at the 16- and 18-leaf stages. Uptake of N was similar for infected and uninfected plants at the four–eight leaf stage but at the eight–12 leaf stage, N uptake by infected maize was 52% that of uninfected maize. However, the proportion of total plant nitrogen partitioned to the root was greater ( P <0.001) for Striga -infected maize. These results showed that the extent to which S. hermonthica reduced maize growth and N uptake, but increased the proportion of N partitioned to the roots, did not depend on the rate of N fertilizer applied. Copyright 1998 Annals of Botany Company" @default.
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- W2017536622 date "1998-02-01" @default.
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- W2017536622 title "Uptake and Partitioning of Nitrogen by Maize Infected withStriga hermonthica" @default.
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- W2017536622 doi "https://doi.org/10.1006/anbo.1997.0559" @default.
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