@article{fdi:010062498, title = {{R}esistant accessions of wild {P}sidium spp. to {M}eloidogyne enterolobii and histological characterization of resistance}, author = {{F}reitas, {V}. {M}. and {C}orrea, {V}. {R}. and {M}otta, {F}. {C}. and {S}ousa, {M}. {G}. and {G}omes, {A}cmm and {C}arneiro, {M}. {D}. {G}. and {S}ilva, {D}. {B}. and {M}attos, {J}. {K}. and {N}icole, {M}ichel and {C}arneiro, {R}mdg}, editor = {}, language = {{ENG}}, abstract = {{M}eloidogyne enterolobii has been reported in some states of {B}razil and other countries causing severe damage on commercial guava ({P}sidium guajava). {T}he use of resistant varieties is the most effective way to manage nematode parasitism. {T}his study screened 51 accessions of {P}sidium spp. selected from the {P}sidium {G}ermplasm {C}ollection ({E}mbrapa) to look for resistance against {M}. enterolobii. {S}ix months after inoculation, nematode reproduction factor ({RF}) was used to assess resistance. {T}he following species were resistant to {M}. enterolobii: {P}. cattleianum (yellow guava), {P}. friedrichsthalianum ({C}osta {R}ican guava), {A}cca sellowiana (feijoa) and {P}. rufum (purple guava). {A}ll 43 wild accessions of {P}. guajava were susceptible, as well as three accessions of {P}. guineense ({B}razilian guava), one of {P}. acutangulum (pear guava) and the susceptible control {P}. guajava cv. {P}aluma. {W}hen used as rootstocks under greenhouse conditions, {P}. cattleianum and {P}. friedrichsthalianum were compatible with cv. {P}aluma; however, in greenhouse and field conditions only 50% of both scions survived. {N}o apparent hypersensitive response ({HR}) was seen in the resistant guava {P}. cattleianum and {P}. friedrichsthalianum. {J}uveniles were able to develop normal feeding sites similar to those in susceptible roots 6-13 days after inoculation (dai). {F}rom 27 to 32 dai, giant cell deterioration was observed and nematodes showed arrested development. {T}he majority of nematodes failed to reach maturity and did not begin laying eggs in resistant roots. {T}hese results suggested that the induction of resistance is relatively late in this pathosystem.}, keywords = {genetic resistance ; grafting compatibility ; histopathology ; {P}sidium guajava ; wild guava}, booktitle = {}, journal = {{P}lant {P}athology}, volume = {63}, numero = {4}, pages = {738--746}, ISSN = {0032-0862}, year = {2014}, DOI = {10.1111/ppa.12149}, URL = {https://www.documentation.ird.fr/hor/fdi:010062498}, }