Tolerance of Genetically Distant Cotton Hybrids to Cotton Bollworm (Helicoverpa Armigera) in Depending of the Level of (+)- Gossypol in Seeds

In this paper presents obtained data onthe natural background about on tolerance of seniorgenerations of cotton hybrids to cotton bollworm(Helicoverpa armigera) with different levels of (+) -gossypol in seeds. On the basis was obtained results,revealed that the level of (+) - gossypol in seeds doesnot significantly resistance to cotton bollworm, i.e.Confirmed the possibility of selecting new broods andlines of cotton with different levels (+) - gossypol andtolerance to Helicoverpa armigera. Results ofresearches of comparative resistance to Helicoverpaarmigera among hybrids of different generations inpetri dishes, it was established that progenies with adifferent levels of (+) - gossypol, a definite pattern isobserved for affection. Genotypes with a low level of(+)- gossypol are affected by Helicoverpa armigera to acertain extent less than hybrids with high (+)-gossypollevel. Although, the incidence of the initial accessionBC3S1-1-6-3-15 of US with a high level of gossypol doesnot preclude the possibility of developing of resistantgenotypes with a high level of (+)-gossypol, whichrequires additional researches in this direction.

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