Occurrence of Septoria tritici blotch ( Zymoseptoria tritici ) disease on durum wheat, triticale, and bread wheat in Northern Tunisia

ABSTRACT Wheat (Triticum aestivum L.) is the most important cereal crop in Tunisia, nonetheless production is highly affected by drought and diseases mainly Septoria tritici blotch (STB) caused by Zymoseptoria tritici (Roberge ex Desm.) Quaedvl. & Crous anamorph and Mycosphaerella graminicola (F...

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Autores principales:	Chedli,Rim Bel Hadj, M’Barek,Sarrah Ben, Yahyaoui,Amor, Kehel,Zakaria, Rezgui,Salah
Lenguaje:	English
Publicado:	Instituto de Investigaciones Agropecuarias, INIA 2018
Materias:	Farina Arbi survey Triticum Tunisia wheat Zymoseptoria
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392018000400559
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spelling	oai:scielo:S0718-583920180004005592018-12-26Occurrence of Septoria tritici blotch ( Zymoseptoria tritici ) disease on durum wheat, triticale, and bread wheat in Northern TunisiaChedli,Rim Bel HadjM’Barek,Sarrah BenYahyaoui,AmorKehel,ZakariaRezgui,Salah Farina Arbi survey Triticum Tunisia wheat Zymoseptoria ABSTRACT Wheat (Triticum aestivum L.) is the most important cereal crop in Tunisia, nonetheless production is highly affected by drought and diseases mainly Septoria tritici blotch (STB) caused by Zymoseptoria tritici (Roberge ex Desm.) Quaedvl. & Crous anamorph and Mycosphaerella graminicola (Fuckel) J. Schröt. 1894 teleomorph; that has become an inherent disease of durum wheat (Triticum turgidum L. subsp. durum (Desf.) van Slageren) but rarely observed on bread wheat (Triticum aestivum L. subsp. aestivum) and on triticale (×Triticosecale spp.) The main objective of this work was to study the prevalence and geographical distribution of Z. tritici on triticale, durum wheat and particularly on bread wheat in different cereal growing regions of North and Northwestern Tunisia to confirm its presence/absence on bread wheat. For this study, 126 wheat fields were surveyed in North and Northwestern Tunisia during 2015-2016 and 2016-2017 cropping seasons. STB on durum wheat was present in the majority of inspected durum wheat fields, where high mean incidence (60%) and severity (40%) were recorded at Jendouba, Bizerte, Beja, and Kef. The survey data revealed low risk on bread wheat with an incidence of 23% and 29% at Bizerte and Beja, respectively. However high incidence of 84% and 52% was recorded at Cap Bon in 2016 and 2017, respectively and mainly at El Haouaria where STB severity was relatively high on bread wheat landrace of unknown origin but called by local farmers as ‘Farina arbi’. Sporadic incidence was recorded on Triticale of 100% at Jendouba (in 2016), and 33% at Bizerte (in 2016 and 2017) and absence at all other surveyed sites; likewise for severity at same locations where 13% and 42% were recorded in 2016. The survey data revealed low risk on bread wheat except at El Haouaria where STB severity was relatively high on a bread wheat landrace; while it was considered as high risk at all durum wheat fields in Beja, Bizerte, Jendouba, Zaghouan and Kef regions, such distinct occurrence could lead to clarify host specificity in Z. triticiinfo:eu-repo/semantics/openAccessInstituto de Investigaciones Agropecuarias, INIAChilean journal of agricultural research v.78 n.4 20182018-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392018000400559en10.4067/S0718-58392018000400559
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Farina Arbi survey Triticum Tunisia wheat Zymoseptoria
spellingShingle	Farina Arbi survey Triticum Tunisia wheat Zymoseptoria Chedli,Rim Bel Hadj M’Barek,Sarrah Ben Yahyaoui,Amor Kehel,Zakaria Rezgui,Salah Occurrence of Septoria tritici blotch ( Zymoseptoria tritici ) disease on durum wheat, triticale, and bread wheat in Northern Tunisia
description	ABSTRACT Wheat (Triticum aestivum L.) is the most important cereal crop in Tunisia, nonetheless production is highly affected by drought and diseases mainly Septoria tritici blotch (STB) caused by Zymoseptoria tritici (Roberge ex Desm.) Quaedvl. & Crous anamorph and Mycosphaerella graminicola (Fuckel) J. Schröt. 1894 teleomorph; that has become an inherent disease of durum wheat (Triticum turgidum L. subsp. durum (Desf.) van Slageren) but rarely observed on bread wheat (Triticum aestivum L. subsp. aestivum) and on triticale (×Triticosecale spp.) The main objective of this work was to study the prevalence and geographical distribution of Z. tritici on triticale, durum wheat and particularly on bread wheat in different cereal growing regions of North and Northwestern Tunisia to confirm its presence/absence on bread wheat. For this study, 126 wheat fields were surveyed in North and Northwestern Tunisia during 2015-2016 and 2016-2017 cropping seasons. STB on durum wheat was present in the majority of inspected durum wheat fields, where high mean incidence (60%) and severity (40%) were recorded at Jendouba, Bizerte, Beja, and Kef. The survey data revealed low risk on bread wheat with an incidence of 23% and 29% at Bizerte and Beja, respectively. However high incidence of 84% and 52% was recorded at Cap Bon in 2016 and 2017, respectively and mainly at El Haouaria where STB severity was relatively high on bread wheat landrace of unknown origin but called by local farmers as ‘Farina arbi’. Sporadic incidence was recorded on Triticale of 100% at Jendouba (in 2016), and 33% at Bizerte (in 2016 and 2017) and absence at all other surveyed sites; likewise for severity at same locations where 13% and 42% were recorded in 2016. The survey data revealed low risk on bread wheat except at El Haouaria where STB severity was relatively high on a bread wheat landrace; while it was considered as high risk at all durum wheat fields in Beja, Bizerte, Jendouba, Zaghouan and Kef regions, such distinct occurrence could lead to clarify host specificity in Z. tritici
author	Chedli,Rim Bel Hadj M’Barek,Sarrah Ben Yahyaoui,Amor Kehel,Zakaria Rezgui,Salah
author_facet	Chedli,Rim Bel Hadj M’Barek,Sarrah Ben Yahyaoui,Amor Kehel,Zakaria Rezgui,Salah
author_sort	Chedli,Rim Bel Hadj
title	Occurrence of Septoria tritici blotch ( Zymoseptoria tritici ) disease on durum wheat, triticale, and bread wheat in Northern Tunisia
title_short	Occurrence of Septoria tritici blotch ( Zymoseptoria tritici ) disease on durum wheat, triticale, and bread wheat in Northern Tunisia
title_full	Occurrence of Septoria tritici blotch ( Zymoseptoria tritici ) disease on durum wheat, triticale, and bread wheat in Northern Tunisia
title_fullStr	Occurrence of Septoria tritici blotch ( Zymoseptoria tritici ) disease on durum wheat, triticale, and bread wheat in Northern Tunisia
title_full_unstemmed	Occurrence of Septoria tritici blotch ( Zymoseptoria tritici ) disease on durum wheat, triticale, and bread wheat in Northern Tunisia
title_sort	occurrence of septoria tritici blotch ( zymoseptoria tritici ) disease on durum wheat, triticale, and bread wheat in northern tunisia
publisher	Instituto de Investigaciones Agropecuarias, INIA
publishDate	2018
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392018000400559
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Occurrence of Septoria tritici blotch ( Zymoseptoria tritici ) disease on durum wheat, triticale, and bread wheat in Northern Tunisia

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