02289naa a2200241 a 450000100080000000500110000800800410001910000210006024501670008126000090024852015450025765000270180265000220182965000200185165000250187165000110189670000170190770000160192470000190194070000180195970000180197777300520199511318282022-03-10       2022    bl uuuu     u00u1 u    #d1 aSANTOS, H. A. A.  aPhenological development of fruits in cultivars of feijoa (Acca sellowiana) and its relationship with South American fruit fly infestation.h[electronic resource]  c2022  aThe present study aimed to evaluate the developmental phases of feijoa fruits associated with infestation by Anastrepha fraterculus (Wiedemann) (Diptera: Tephritidae) and the nonpreference of fruit flies for ripe fruits of feijoa. Two tests were carried out. In the first trial, we evaluated the association between the developmental stages of feijoa fruits and infestation by A. fraterculus. To accomplish this, fruits at five different stages of development, from green to ripe, were examined from the Alc??ntara cultivar. In the second trial, we evaluated the nonpreference of A. fraterculus for ripe fruits of Alc??ntara, Helena, Mattos and access 2316 cultivars. Physicochemical analyses were performed on the fruits of both trials. In the second test, analyses of polyphenol index and tannin concentration were also performed. Feijoa fruits in stage I are the likely targets of attack by A. fraterculus. The fruits of Alc??ntara cultivar from stage II, with 39 mm of transversal diameter and soluble solids, presented four puparium / fruit. The fruits of Alc??ntara and access 2316 cultivars showed greater and lesser infestation, respectively. The fruits of access 2316 also showed a higher concentration of tannins compared to the three commercial cultivars tested, which may have conferred the greatest protection against infestation by A. fraterculus. Feijoa fruits from Alc??ntara and Mattos cultivars showed high susceptibility to infestation by A. fraterculus, requiring management practices to guarantee commercial production.  aAnastrepha fraterculus  agoiabeira-serrana  apineapple-guava  aresistance of plants  atannin1 aFAITA, M. R.1 aORTH, A. I.1 aRIBEIRO, L. G.1 aFELIPPETO, J.1 aNODARI, R. O.  tCi??ncia Rural, Santa Mariagv. 52, n. 8, 2022.