Screening of resistance to egyptian broomrape infection in tomato varieties

Abstract

-Parasitic weed species of the genus Orobanche are serious threat for the production of several crops in Europe, Africa and Asia. Research on resistant host plant varieties is one of the most effective management strategies for this parasitic weed. In this study, the susceptibility of twenty-nine tomato varieties to broomrape infection (Orobanche aegyptiaca) under greenhouse conditions was investigated. The employed experimental design was completely randomized with three replications. Differences in susceptibility to infection were monitored among tomato varieties based on their difference in the number of emerged shoots of broomrape and broomrape dry weight (shoots and tubercles). Date of Orobanche emergence varied over a period of 3 to 30 days between varieties. Very late infection was monitored for varieties of Cal-jN3, Viva, Caligen 86, Packmor, CSX 5013, Hyb. PS 6515 and Hyb Petopride5. Differences in the growth and fruit yield among tomato varieties were also found in response to broomrape infestation. Moderate levels of resistance were obtained in Viva, Caligen 86, Hyb. PS 6515, Hyb.Firenze (PS 8094) and Cal-jN3 among other tomato varieties. In contrast, varieties of Kimia-Falat, Hyb. Petopride II and Hyb.AP865 were the most susceptible hosts to Orobanche aegyptiaca.Keywords: breeding, Orobanche aegyptiaca, Lycopersicon esculentum, parasitic plant, weed. Viva, Caligen 86, Packmor, CSX 5013, Hyb. OS 6515 e Hyb Petopride5. Também RESUMO -Espécies de plantas daninhas parasitas do gênero Orobanche são uma séria ameaça à produção de diversas culturas na Europa, África e Ásia. A realização de pesquisas com variedades resistentes de plantas hospedeiras é uma das estratégias de manejo mais eficazes com relação a essa planta daninha parasita. Neste estudo, foi investigada, em casa de vegetação, a susceptibilidade de vinte e nove variedades de tomate à infecção pela erva-toira do Egito (Orobanche aegyptiaca). O delineamento experimental utilizado foi inteiramente casualizado, com três repetições. As diferenças de susceptibilidade à infecção foram monitoradas entre as variedades de tomate com base na diferença entre o grau de emergência da parte aérea da erva-toira e a massa seca da erva-toira (parte aérea e tubérculos). A data de emergência da Orobanche variou entre as variedades ao longo de um período de 3 a 30 dias. Foi observada uma infecção bastante tardia para as variedades

Recent research progress in combatting root parasitic weeds

“…The germination percentage of P. ramosa seeds was reduced by up to 90% with the application of extracts from tomato plants expressing the SlCCD7 antisense construct due to significantly decreased levels of SL compared with the wild type [82]. In addition, several tomato cultivars with resistance to P. aegyptiaca were found in Turkey [83] and Iran [84] under outdoor conditions. Torres-Vera et al [85] found that three principal defence-regulating hormonal pathways (SA, JA and abscisic acid) and SL biosynthesis genes SlD27 and SlCCD8 were induced after P. ramosa infection to tomato.…”

Exploration of resistance to Phelipanche aegyptiaca in tomato

“…Eight weeks after inoculation, when P. aegyptiaca was fully developed but had not yet blossomed, tomato roots and broomrape attachments were washed gently to remove the dirt. Broomrape attachments on host roots and biomasses, including the total broomrape number (Tb), broomrape shoots that emerged above the soil (Be) and broomrape fresh weight (Fw), were recorded per tomato plant 36 …”

Identification of risk areas for Orobanche cumana and Phelipanche aegyptiaca in China, based on the major host plant and CMIP6 climate scenarios

“…Compared with O. cumana, Phelipanche aegyptiaca could parasitize more hosts (Kacan & Tursun, 2012;Parker, 2012). The tomato (Lycopersicon esculentum) is one of the significant vegetable crops in China that is highly vulnerable to infest by P. aegyptiaca (Tokasi et al, 2014).…”

“…The tomato ( Lycopersicon esculentum ) is one of the significant vegetable crops in China that is highly vulnerable to infest by P . aegyptiaca (Tokasi et al, 2014 ). In 2013, the damaged area of P .…”