Abstract
APPARENTLY uniform varieties of barley show striking differences in their reaction to DDT (1,1,1-trichloro-2,2-bis-(p-chlorophenyl)-ethane) or certain of its analogues (Fig. 1). Some varieties are resistant to DDT whereas others are susceptible and develop a severe chlorosis some 4–10 days after treatment with sprays containing DDT (ref. 1). DDT is not translocated in the plant to any extent and similar amounts of the insecticide are absorbed by resistant and susceptible varieties2,3. The reaction to DDT is controlled by a single major gene with susceptibility dominant to resistance1,4.
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LAWLER, P., ROGERS, L. Effect of DDT on Photosynthesis in Certain Varieties of Barley. Nature 215, 1515–1516 (1967). https://doi.org/10.1038/2151515a0
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DOI: https://doi.org/10.1038/2151515a0
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