Evaluation of regulatory influence of four plant growth regulators on the reproductive potential and longevity of melon fruit fly (Bactrocera cucurbitae) |
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Authors: | Rabinder Kaur P J Rup |
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Institution: | (1) Insect Physiology Laboratory, Dept. of Zoology, Guru Nanak Dev University, 143 005 Amritsar, India |
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Abstract: | The topical treatment given to freshly emerged (0–1-day-old) male and female adults ofBactrocera cucurbitae (Coquillett), a serious pest of cucurbit crops in tropical countries, with 25, 125, 625 and 3125 ppm concentrations of gibberellic
acid (GA3), indole-3-acetic acid (IAA), kinetin and coumarin showed a significant adverse influence on the reproductive potential of
this fruit fly. The assessment for reproductive potential was made on the basis of reduction in fecundity and fertility of
laid eggs and measured as sterility in females and shortening of the longevity,i.e. ovipositional phase. The strongest influence was with kinetin, followed closely by coumarin, then GA3 and lastly with IAA treatments. It was concluded that although these compounds demonstrate their activities differently in
plants and might be following a different mode of action in insects, they ultimately influence the reproductive potential
of this insect. |
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Keywords: | Bactrocera cucurbitae gibberellic acid indole-3-acetic acid kinetin coumarin reproduction longevity |
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