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The relationship between tannins concentration in some cotton varieties and susceptibility to piercing sucking insects
Author(s) -
Mansour M. H.,
Zohdy N. M.,
ElGengaihi S. E.,
Amr A. E.
Publication year - 1997
Publication title -
journal of applied entomology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.795
H-Index - 60
eISSN - 1439-0418
pISSN - 0931-2048
DOI - 10.1111/j.1439-0418.1997.tb01413.x
Subject(s) - biology , tannin , infestation , insect , gossypium barbadense , population , gossypium , condensed tannin , botany , malvaceae , horticulture , proanthocyanidin , gossypium hirsutum , polyphenol , biochemistry , demography , sociology , antioxidant
Tannins have been implicated in the resistance of some cotton varieties to insect attack. The relationship between tannin concentration and susceptibility of some Egyptian cotton varieties to piercing sucking insects has been undertaken in the present work. Eight Egyptian cotton derived from Gossypium barbadense and one variety from G. hirsutum were evaluated. There is a significant negative linear relationship between the concentration of tannins in two Egyptian varieties, Giza 70 and Giza 76, and the population density of piercing sucking insects. On the contrary, a positive correlation existed between piercing sucking insect infestation and tannin concentrations in the two cotton varieties, Giza 80 and Giza 81. This may be attributed to the low level of tannins in these two varieties.