‘TCLF‐AN‐105’ (Reg. No.TCL‐009–251104, México; Reg. no. CV‐31, PI 658496) intermediate triticale (× Triticosecale Wittmack) was developed by the International Maize and Wheat Improvement Center (CIMMYT), México, and reselected and released as a forage cultivar in Mexico by the Universidad Autónoma Agraria Antonio Narro (UAAAN). TCLF‐AN‐105 was selected from the progeny of the cross CT776.81//TESM01/MUSK603 produced in the Yaqui Valley, México, in 1989. CT776.81 and TESM01/MUSK603 are two parental lines (winter and spring triticale, respectively) developed by CIMMYT. TCLF‐AN‐105 was released because of its biomass production, cycle duration and nutritive value. The selection was based primarily on forage and agronomic characteristics and resistance to stem and leaf rust. ‘TCLF‐AN‐31’ winter triticale (Reg. no. CV‐25, PI 620762), released as a forage cultivar by the UAAAN in 1992 (México Reg. No. TCL‐07–080592) was used as reference cultivar.

No abstract

‘ANPELON’ (Reg. No. 2640‐TCL‐014‐010313, Mexico; Reg. No. CV‐32, PI 669388) winter triticale (× Triticosecale Wittm.) was selected from the heterogeneous population URSS 3310, sent to Universidad Autónoma Agraria Antonio Narro (UAAAN) by the International Maize and Wheat Improvement Center (CIMMYT), Mexico, and registered and released as a forage cultivar in Mexico by the UAAAN and the National Seed Inspection and Certification Service (SNICS) in 2012. ANPELON was released because of its biomass production, regrowth capacity, awnless spikes, and nutritive value. The primary selection was based on agronomic characteristics and resistance to stem rust (caused by Puccinia graminis Pers. f. sp. tritici Eriks. & Henn) and leaf rust (caused by P. recondita Rob. ex Desm. f. sp. tritici) and subsequently, on forage and nutritional characteristics. The reference cultivar was ‘TCLF‐AN‐31’ winter triticale (Reg. No. CV‐25, PI 620762), released as a forage cultivar by the UAAAN in 1992 (Reg. No. TCL‐07‐080592, Mexico).

‘AN38’ (Reg. No. 2461‐TCL‐015‐010313, Mexico; Reg. No. CV‐33, PI 669387) facultative triticale (× Triticosecale Wittmack) was developed from a cross made by the International Maize and Wheat Improvement Center (CIMMYT), Mexico, and reselected and released as a forage cultivar in Mexico by the Universidad Autónoma Agraria Antonio Narro (UAAAN) and the National Seed Inspection and Certification Service (SNICS) in 2012. AN38 was selected from the progeny of the cross LT1071.82//VICUÑA 4, made in Toluca, Mexico, in 1992. AN38 was released because of its biomass production, earliness, nutritive value, and disease resistance. The selection was based on agronomic, forage, and nutritional characteristics and resistance to stem rust (caused by Puccinia graminis Pers. f. sp. tritici Eriks. & Henn) and leaf rust (caused by P. recondita Rob. ex Desm. f. sp. tritici). ‘TCLF‐AN‐105’ facultative triticale (PI 658496), released as a forage cultivar by the UAAAN in 2004 (Reg. No. TCL‐009‐251104, Mexico) was used as reference cultivar.

No abstract

El trigo es un cultivo importante para la alimentación humana y una alternativa forrajera extraordinaria para el ganado. En México no se le cultiva específicamente con ese objetivo, pero se trabaja en la generación de genotipos con fines forrajeros auxiliándose de tecnología emergente. Se evaluaron 22 genotipos de trigo y tres testigos de otra especie en cuatro ambientes durante los ciclos otoño-invierno 2017-2018 y 2018-2019 mediante un diseño de bloques completos al azar con tres repeticiones, con el fin de agrupar genotipos a través de tres muestreos (a los 75, 90 y 105 días después de la siembra) y estimar la asociación entre variables. Con las medias de los genotipos a través de los ambientes se realizaron análisis de componentes principales y conglomerados para cada muestreo. Los resultados del análisis de varianza justificaron el estudiar los muestreos por separado. En cada muestreo se retuvieron hasta cinco grupos, existiendo grupos de trigos con rendimientos de forraje seco iguales o superiores al de la avena. En etapas tempranas se tuvo mayor proporción de hojas, las cuales disminuyeron al avanzar la etapa fenológica, mientras se incrementaba la fracción de espigas, con un leve decremento de la fracción de tallos. Existen grupos de trigos forrajeros que pueden representar una opción para sustituir la avena, sobresaliendo los trigos AN-229-09, AN-241-13, AN-268-99, AN-217-09 y AN-263-99. Se detectó una asociación positiva entre el NDVI, FSH y COB que perduró a través de los muestreos, sugiriendo que el uso de sensores infrarrojos puede emplearse en la estimación de materia seca de hojas.