Abstract

ARGENTEL MARTINEZ, Leandris et al. Phisiological and agronomic traits of hard wheat CIRNO variety C2008 confirm its genetic stability. Agrociencia [online]. 2018, vol.52, n.3, pp.419-435. ISSN 2521-9766.

Due to the importance of the correct selection of progenitors for an effective genetic improvement in highly productive wheat regions such as the state of Sonora, which contributes 50% of the wheat in Mexico, we conducted a study of morphoagronomic variables of the crystalline wheat CIRNO C2008 variety. The objective was to determine the genetic stability index of the grain yield components in the Valle del Yaqui and Valle del Mayo, during the sowing seasons of 2007-2015. In addition, physiological and agronomic traits were evaluated in the 2015-16 cycle in an area established in CETT-910, as a representative site of the Valle del Yaqui, which were compared with the varietal descriptor and correlated with grain yield to contribute to its physioagronomic characterization. The experimental design was completely randomized and data were taken from different sites of the valleys mentioned in the state of Sonora. The highest grain yield was obtained in the Valle del Yaqui. The variables of plant height and spike length were the components of the yield with the highest index of genetic stability. The variety phenophases occurred properly without affecting the biological cycle. The grain yield in the CETT-910, in the 2015-2016 cycle, was higher than that obtained by the varietal descriptor as a result of good nutritional status and high photosynthesis. The results show that CIRNO C2008 maintains genetic stability of the yield components after eight years of being released for agricultural production in the Valle del Yaqui and Valle del Mayo.

Keywords : wheat; CIRNO C2008; physiological characteristics; genetic stability.

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