Effects of l,l-Dimethylpiperidinium Chloride on the Pests and Allelochemicals of Cotton and Pecan
نویسندگان
چکیده
The growth regulator, PIX (mepiquat chloride l,l-dimethyl-piperdinium chloride), when applied to cotton (Gossypium hirsutum L.) and pecan (Carya illinoensis Koch), caused internode shortening. PIX did not elicit an increase in resistance in cotton to the tobacco budworm[Heliothis virescens (Fab.)], or in pecan to pecan scab (Cladosporium caryigenum (Ell. et Lang) Gottwald]. Also, changes in content of four known allelochemicals (condensed tannins, gossypol, anthocyanins, flavonoids) for these pests were minimal. An unexpected finding was the increase in content of several nutritional factors that may be related to greater, rather than lesser, growth of tobbaco budworm larvae feeding on cotton tissues.
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