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Passos,João Frederico M. dos; Costa,Pedro B. da; Costa,Murilo D.; Zaffari,Gilmar R.; Nava,Gilberto; Boneti,José Itamar; Oliveira,Andréia Mara R. de; Passaglia,Luciane M.P.. |
This study evaluated the diversity of cultivable plant growth-promoting (PGP) bacteria associated with apple trees cultivated under different crop management systems and their antagonistic ability against Colletotrichum gloeosporioides. Samples of roots and rhizospheric soil from apple trees cultivated in organic and conventional orchards in southern Brazil were collected, together with soil samples from an area never used for agriculture (native field). Bacteria were identified at the genus level by PCR-RFLP and partial sequencing of the 16S rRNA, and were evaluated for some PGP abilities. The most abundant bacterial genera identified were Enterobacter (27.7%), Pseudomonas (18.7%), Burkholderia (13.7%), and Rahnella (12.3%). Sixty-nine isolates presented... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Plant growth-promoting bacteria; Apple tree; Antagonistic activity; Colletotrichum gloeosporioides. |
Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572014000400013 |
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Silva,EDB da; Kuhn,TMA; Monteiro,LB. |
Cultivation of temperate-climate fruits is economically important for Brazil. Grapholita molesta Busck is a pest that causes damage to apples, peaches, plums, and pears growing in different micro-regions of southern Brazil, and understanding its reproductive behavior is essential to develop control strategies. The objective of this study was to ascertain the influence of different temperatures (13, 16, 19, 22, and 25ºC) on the oviposition behavior of G. molesta. Females of G. molesta were placed in individual plastic containers, and the pre-oviposition period and the number of eggs laid were assessed until adult death. Temperature influenced the pre-oviposition period, and females kept at 22º were the first to lay their eggs. Oviposition occurred over a... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Apple tree; Fecundity; Oriental fruit moth; Pre-oviposition period. |
Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2011000400001 |
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