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Corn (Zea mays L.) production in Mexico is in deficit despite generating 27 million Mg. In southern Sonora, the planted area has grown significantly over the last four years, from 544 to 680 thousand Mg produced in 2018 and 2021, respectively. Ninety-seven percent of the production corresponds to improved white-colored maize from transnational companies; however, there are no commercial plantings of colored maize. The objective of this research was to estimate grain yield and its agronomic components in improved purple corn hybrids in southern Sonora, Mexico, over three years using the additive main effects and multiplicative interaction method (AMMI). A randomized, complete-block experimental design with three replications was used. The plots were two 4 m long furrows with a stocking density of 100 000 plants ha-1. The variables recorded were: grain yield (RG), thousand-kernel weight (PMG), ear length (LM), grains per row (GH), rows per ear (HM), and hectoliter weight (PH). The results showed statistical differences among years, hybrids, and their interaction (AxH) in all variables. The AMMI model was highly effective, allowing the identification of hybrids 1, 2, 7, and 10 with greater stability in the year 2021 associated with RG, PH, and LM, obtaining outstanding averages in all variables and being more appropriate for the climatic conditions of southern Sonora. On the contrary, the most sensitive hybrid with the highest interaction was 4, associated with GH and HM; hybrids 3, 5, 6, 8, 9, 11, and 12 were stable with negative values in 2019 and 2020. [ABSTRACT FROM AUTHOR]

Copyright of Tecnología y Ciencias del Agua is the property of Instituto Mexicano de Tecnologia del Agua (IMTA) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista Ciencia y Tecnología Agropecuaria is the property of Agrosavia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

In the present investigation, the morphological variability of 11 populations of wild piquin chili (Capsicum annuum var. glabriusculum) of the Mountain range Gorda and Semidesert of Queretaro (Municipalities of Arroyo Seco, Jalpan of Serra, Toliman and Cadereyta de Montes) and Guanajuato (Municipality of Xichu). The characterization was carried out under greenhouse conditions at the Technological Institute of Roque (ITR) located in Celaya, Guanajuato, Mexico. The 44 characters were recorded in seedling, plant, flowering, fruit maturity and seed. The principal component analysis (CP) showed that the first three components explained 56.6% of the total morphological variability. The CP1 was explained by the characteristics of weight (0.326), width (0.301) and fruit length (0.271), leaf density (0.277) and seed diameter (0.297). In CP2, the variables that contributed most to the expression of the variation were width (0.329) and leaf pubescence (0.317) and finally, in CP3, the shape of the fruit (0.344) and color of the anthers (- 0.308) were the most important characters. On the other hand, the cluster analysis generated four groups, group I included the G3 (Rosa of Castilla), G2 (Palmitas The Tanque), G1 (The Tanque) populations, all of the Mountain range Gorda in Guanajuato. Group II was made up of population Q7 (The Patol, Querétaro). Group III was formed by population Q5 (Presa Jalpan, Querétaro) and finally, group IV was integrated by six populations, Q4 (San Antonio Tancoyol), Q8 (Higuerillas stream), Q6 (Higuerillas The Shote), Q2 (The Refugio solar-huerta), Q3 (Tancoyol Road to Tancoyol) and Q1 (The Chilar Refuge), all of the State of Querétaro. The morphological diversity found in this species tells us that this native plant should be conserved and that it can be easily integrated into a program of sustainable use of the flora of the region. [ABSTRACT FROM AUTHOR]