Induced Resistance to <i>Striga hermonthica</i>in Sorghum by Gamma Irradiation  

作　　者：Minimassom P. Nikièma Djibril Yonli Harimialimalala J. Rabefiraisana Adel Ali Nofou Ouédraogo Hamidou Traoré Hamidou Y. A. Yanogo Karim Dao Mahamadou Sawadogo Ljupcho Jankuloski Ingelbrecht Ivan Mukhtar Ali Ghanim Abdelbagi Minimassom P. Nikièma;Djibril Yonli;Harimialimalala J. Rabefiraisana;Adel Ali;Nofou Ouédraogo;Hamidou Traoré;Hamidou Y. A. Yanogo;Karim Dao;Mahamadou Sawadogo;Ljupcho Jankuloski;Ingelbrecht Ivan;Mukhtar Ali Ghanim Abdelbagi(Institut de l’Environnement et de Recherches Agricoles (INERA), Ouagadougou, Burkina Faso;Faculty of Sciences, University of Antananarivo, Antananarivo, Analamanga, Madagascar;Plant Breeding and Genetics Laboratory, Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, Department of Nuclear Sciences and Applications (NAFA), International Atomic Energy Agency (IAEA), Seibersdorf, Austria;Université Joseph Ki-Zerbo, Ouagadougou, Burkina Faso;NAFA, IAEA, Vienna International Center, Vienna, Austria)

机构地区：[1]Institut de l’Environnement et de Recherches Agricoles (INERA), Ouagadougou, Burkina Faso [2]Faculty of Sciences, University of Antananarivo, Antananarivo, Analamanga, Madagascar [3]Plant Breeding and Genetics Laboratory, Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, Department of Nuclear Sciences and Applications (NAFA), International Atomic Energy Agency (IAEA), Seibersdorf, Austria [4]Université Joseph Ki-Zerbo, Ouagadougou, Burkina Faso [5]NAFA, IAEA, Vienna International Center, Vienna, Austria

出　　处：《American Journal of Plant Sciences》2020年第10期1545-1561,共17页美国植物学期刊（英文）

摘　　要：<div style="text-align:justify;"> <i><span style="font-family:Verdana;">Striga</span></i><span style="font-family:Verdana;"> species affect the potential productivity of cereals in sub-Saharian Africa due to the lack of durable </span><i><span style="font-family:Verdana;">Striga</span></i><span style="font-family:Verdana;">-resistance in host crops. This study aimed at inducing the new source of resistance in sorghum using gamma irradiation. Dry seeds of three Sorghum varieties;Grinkan, ICV1049 and Sariaso14 were gamma-irradiated with 200 Gy, 300 Gy, 400 Gy and 500 Gy. Screening strategies involved a 2-year field and greenhouse experiments, where mutant Sorghum families, their parents and resistant control were artificially infected with </span><i><span style="font-family:Verdana;">Striga hermonthica</span></i><span style="font-family:Verdana;"> seeds. Field screenings revealed induced genetic variability among them, forty families significantly reduced the number of emerged </span><i><span style="font-family:Verdana;">Striga</span></i><span style="font-family:Verdana;"> plants or showed good Sorghum grain yield performance despite the infection by S. </span><i><span style="font-family:Verdana;">hermonthica</span></i><span style="font-family:Verdana;"> ecotype from Burkina Faso. The induced putative resistant mutants were identified across the four applied gamma-irradiation doses. Greenhouse experiment confirmed </span><i><span style="font-family:Verdana;">Striga</span></i><span style="font-family:Verdana;"> resistance in seven mutant Sorghum families leading to no emergence of Burkina’s S. </span><i><span style="font-family:Verdana;">hermonthica</span></i><span style="font-family:Verdana;"> ecotype along with high resistance index (RI) and low </span><i><span style="font-family:Verdana;">Striga</span></i><span style="font-family:Verdana;"> damage score. Among them, two mutants SA38M5 and IC47M5 withstood S. </span><i><span style="font-family:Verdana;">hermonthica</span></i><span style="font-family:Verdana;"> e<div style="text-align:justify;"> <i><span style="font-family:Verdana;">Striga</span></i><span style="font-family:Verdana;"> species affect the potential productivity of cereals in sub-Saharian Africa due to the lack of durable </span><i><span style="font-family:Verdana;">Striga</span></i><span style="font-family:Verdana;">-resistance in host crops. This study aimed at inducing the new source of resistance in sorghum using gamma irradiation. Dry seeds of three Sorghum varieties;Grinkan, ICV1049 and Sariaso14 were gamma-irradiated with 200 Gy, 300 Gy, 400 Gy and 500 Gy. Screening strategies involved a 2-year field and greenhouse experiments, where mutant Sorghum families, their parents and resistant control were artificially infected with </span><i><span style="font-family:Verdana;">Striga hermonthica</span></i><span style="font-family:Verdana;"> seeds. Field screenings revealed induced genetic variability among them, forty families significantly reduced the number of emerged </span><i><span style="font-family:Verdana;">Striga</span></i><span style="font-family:Verdana;"> plants or showed good Sorghum grain yield performance despite the infection by S. </span><i><span style="font-family:Verdana;">hermonthica</span></i><span style="font-family:Verdana;"> ecotype from Burkina Faso. The induced putative resistant mutants were identified across the four applied gamma-irradiation doses. Greenhouse experiment confirmed </span><i><span style="font-family:Verdana;">Striga</span></i><span style="font-family:Verdana;"> resistance in seven mutant Sorghum families leading to no emergence of Burkina’s S. </span><i><span style="font-family:Verdana;">hermonthica</span></i><span style="font-family:Verdana;"> ecotype along with high resistance index (RI) and low </span><i><span style="font-family:Verdana;">Striga</span></i><span style="font-family:Verdana;"> damage score. Among them, two mutants SA38M5 and IC47M5 withstood S. </span><i><span style="font-family:Verdana;">hermonthica</span></i><span style="font-family:Verdana;"> e

关 键 词：SORGHUM Induced Mutation Striga Resistance 

分 类 号：O17[理学—数学]