نویسنده:اصغر بابامیر ساطحی Asghar Babamir‑Satehi
The pink stem stalk borer, Sesamia cretica Lederer, is the main insect pest of sugarcane, Saccharum ofcinarum L., in Iran
and worldwide. This paper assesses the efects of six sugarcane cultivars on the feeding performance and enzymatic activity
of S. cretica under controlled conditions. It also investigates the biochemical traits of sugarcane cultivars (total phenolic,
favonoids, and anthocyanins contents) and explores their relationship with the nutritional physiology of S. cretica. The study
fndings indicated remarkable diferences in the nutritional properties and digestive function of S. cretica on various sugarcane
cultivars. The S. cretica larvae reared on cultivar CP48-103 were indicated to have the highest ECI, RGR, and ECD values.
In addition, the larvae fed on cultivar CP73-21 showed the lowest values of RCR and RGR. The S. cretica larvae induced the
highest proteolytic activity during feeding with CP48-103, CP57-614, and CP73-21 cultivars. The ffth instar larvae demonstrated
the highest and lowest amylolytic activity when fed with cultivars IRC99-01 and CP57-614, respectively. Moreover, signifcant
variations in the phytochemical metabolites were detected among the sugarcane cultivars. Signifcant negative or positive
correlations were found between the tested parameters of S. cretica and the biochemical characteristics of sugarcane cultivars.
The cluster analysis results showed that cultivar CP73-21 was relatively unsuitable for S. cretica feeding: it was a suggested
candidate to grow in regions with typically high pest infestation