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Strategic research for developing improved wheat germplasm for Mexico

By: Piñera Chavez, F.J.
Contributor(s): Autrique, E | Valenzuela-Antelo, J.L | Singh, P.K | Guzman, C | Xinyao He | Caixia Lan | Randhawa, M.S | Huerta-Espino, J | Ortiz-Monasterio, I | Singh, R.P.
Material type: materialTypeLabelChapterPublisher: Mexico : CIMMYT, 2017Subject(s): Wheat | Germplasm | Mexico AGROVOCOnline resources: Complete source through Dspace In: Proceedings of the 3rd International TRIGO Wheat Yield Potential p. 42-54Summary: Current projections of tight global grain markets in the future, environmental risks to expand agricultural land, and falling of relative yield increase rates are worldwide challenges that food security is facing. As a wheat producing country, Mexico is not only facing these challenges but also a great deficit of bread wheat, which makes it necessary to import bread wheat to meet national demand. Thus, strategic research for developing improved wheat germplasm for Mexico will be crucial. The strategic breeding conducted by CIMMYT's Global Wheat Program (GWP) aims to obtain genetic gains through high and stable yields and resistance/tolerance to biotic and abiotic stresses while maintaining wheat quality. This study aimed to develop germplasm through the CIMMYT and Mexican NARS collaboration that can be suitable for national growing areas and end use markets of wheat in Mexico. Activities of this study were conducted during the 2015-2016 winter cycle at Ciudad Obregon and the 2016 summer cycles at Toluca and El Batan. Data were collected on grain and flour quality characteristics and the resistance to leaf (Puccinia triticina f.sp. tritici), yellow (Puccinia striiformis f. sp. tritici) and stem (Puccinia graminis f. sp. tritici) rusts, leaf blotch (Septoria tritici) and Fusarium head blight (Fusarium graminearum) of 1384 CIMMYT advanced lines was assessed. Another set of 1092 advanced lines (2015 selection) was evaluated for heat, drought and yield potential during 2015-2016. A total of 16 advanced lines with great potential for release were also evaluated in Yaqui Valley production fields. After screening 1384 advanced lines, a total of 1092 advanced lines with resistance or reasonable resistance to these diseases and desirable grain quality were selected in 2016 and included in grain yield trials that are currently being conducted (2016-2017 winter cycle, Ciudad Obregon) and will help to further select the best lines for high and stable grain yield in a number of environments (heat, drought, yield potential). Advanced lines were evaluated during the 2015- 2016 winter cycle in Ciudad Obregon under heat, drought and irrigation, and results indicate that the grain yield rankings of the best lines are equal or superior to those of the checks (677 outstanding lines selected for national and international nurseries). Ongoing activities aimed at delivering materials for new variety release are showing promising results, due in part to fundamental collaboration with INIFAP, seed producers and wheat growers.
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Conference proceedings CIMMYT Knowledge Center: John Woolston Library

Lic. Jose Juan Caballero Flores

 

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Current projections of tight global grain markets in the future, environmental risks to expand agricultural land, and falling of relative yield increase rates are worldwide challenges that food security is facing. As a wheat producing country, Mexico is not only facing these challenges but also a great deficit of bread wheat, which makes it necessary to import bread wheat to meet national demand. Thus, strategic research for developing improved wheat germplasm for Mexico will be crucial. The strategic breeding conducted by CIMMYT's Global Wheat Program (GWP) aims to obtain genetic gains through high and stable yields and resistance/tolerance to biotic and abiotic stresses while maintaining wheat quality. This study aimed to develop germplasm through the CIMMYT and Mexican NARS collaboration that can be suitable for national growing areas and end use markets of wheat in Mexico. Activities of this study were conducted during the 2015-2016 winter cycle at Ciudad Obregon and the 2016 summer cycles at Toluca and El Batan. Data were collected on grain and flour quality characteristics and the resistance to leaf (Puccinia triticina f.sp. tritici), yellow (Puccinia striiformis f. sp. tritici) and stem (Puccinia graminis f. sp. tritici) rusts, leaf blotch (Septoria tritici) and Fusarium head blight (Fusarium graminearum) of 1384 CIMMYT advanced lines was assessed. Another set of 1092 advanced lines (2015 selection) was evaluated for heat, drought and yield potential during 2015-2016. A total of 16 advanced lines with great potential for release were also evaluated in Yaqui Valley production fields. After screening 1384 advanced lines, a total of 1092 advanced lines with resistance or reasonable resistance to these diseases and desirable grain quality were selected in 2016 and included in grain yield trials that are currently being conducted (2016-2017 winter cycle, Ciudad Obregon) and will help to further select the best lines for high and stable grain yield in a number of environments (heat, drought, yield potential). Advanced lines were evaluated during the 2015- 2016 winter cycle in Ciudad Obregon under heat, drought and irrigation, and results indicate that the grain yield rankings of the best lines are equal or superior to those of the checks (677 outstanding lines selected for national and international nurseries). Ongoing activities aimed at delivering materials for new variety release are showing promising results, due in part to fundamental collaboration with INIFAP, seed producers and wheat growers.

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