Değişik fasulye çeşitlerinde fasulye tohumböceği [ Acanthoscelides obtectus (Say) (CoL:Bruchidae)]'nin gelişme ve çoğalması

Abstract

In this study, duration of preoviposition, oviposition, postoviposition, number of daily and total laid eggs, longevity of the female and male adults, eggs hatching periods and ratios, larvael period and death ratio, adult period in pupae+cocoon and death ratio, sex ratio, weight of female and male individuals and the weight losses of bean seeds Phaseolus viilgaris caused by Acanthoscelides obtectus (Say) (Col.: Bruchidae), were studied on some bean registered varieties such as Yunus 90, Onceler 98, Goynuk 98, Sehirali 90, Karacasehir 90, Akman 98. Relation between the protein, starch and tanen ratios, seed coat thickness, bigness of bean seeds and the development and reproduction of A.obtectus were investigated as well. Studies were carried out in a climatically controlled room which was adjusted to 25±2°C and 50±5 % relative humidity. The results obtained from the studies carried out on the different bean varieties to determine the larvae period of A.obtectus, female and male weights, adult emerging period, longevity of male and female individuals, oviposition period, death ratio of the first instar larvae and the relation between the seed coat thickness and weight losses caused by A.obtectus were shown to be statistically different. A linear correlation was found between the protein ratio of the bean varieties and the larvae period duration between the seed bigness and the first larvae death ratio. The protein rate effected on larvae stage period. When protein rate decreased, larvae stage period has been prolonged. It is obtained the longest larvae stage period with 19.45 days when protein rate was at 23.93%. Also when protein rate was at 20.48%, It was determined the shortest at larvae stage period with 15.03 days. Rate mortality of first stage larvae was the highest at small seed on Karacasehir 90 variety with 76.36%. No relation was determined between the tanen, starch ratios, the seed coat thickness and the other biological periods of A. obtectus .