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General and Exact Inbreeding Coefficient of Maize Synthetics Derived from Three-Way Line Hybrids

Alejandro Ibarra-Sánchez, Juan Enrique Rodríguez-Pérez, Aureliano Peña-Lomelí, Clemente Villanueva-Verduzco, Jaime Sahagún-Castellanos*

Crop Science Department, Chapingo Autonomus University, Chapingo, 56230, México

* Corresponding Author: Jaime Sahagún-Castellanos. Email: email

(This article belongs to the Special Issue: Plant Physiology for Crop Production and Sustainable Agriculture)

Phyton-International Journal of Experimental Botany 2022, 91(1), 33-43. https://doi.org/10.32604/phyton.2022.016136

Abstract

Synthetic varieties (SVs) are populations generated by randomly mating their parents. They are a good alternative for low-input farmers who grow onions, maize, and other allogamous crops since the seed produced by a SV does not change from one generation to the next. Although SV progenitors are commonly pure lines, in this case a synthetic (SynTC) whose parents are t three-way line crosses, a very common type of maize hybrid grown in Mexico, is studied. The aim was to develop a general and exact equation for the inbreeding coefficient of a SynTC SynTC because of its relationship with the mean of economically important traits. This objective arose due to the need for a more advanced study in terms of determining whether SynTC can be applied specifically and accurately for any number of parents (t), plants per parent (m) and inbreeding coefficient (IC) of the initial lines (FL). A formula for the IC of the SynTC was derived that, given any values of FL (0 ≤ FL ≤ 1) and t, is specific for any value of m, not just for “large” numbers associated with the context in which the Hardy-Weinberg law is stated. It was found that SynTC is very sensitive to changes in m when m is not greater than eight, after which it tends to stabilize very quickly. In summary, unlike previously derived formulas, SynTC is exact for any values of t, m and FL.

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APA Style
Ibarra-Sánchez, A., Rodríguez-Pérez, J.E., Peña-Lomelí, A., Villanueva-Verduzco, C., Sahagún-Castellanos, J. (2022). General and exact inbreeding coefficient of maize synthetics derived from three-way line hybrids. Phyton-International Journal of Experimental Botany, 91(1), 33-43. https://doi.org/10.32604/phyton.2022.016136
Vancouver Style
Ibarra-Sánchez A, Rodríguez-Pérez JE, Peña-Lomelí A, Villanueva-Verduzco C, Sahagún-Castellanos J. General and exact inbreeding coefficient of maize synthetics derived from three-way line hybrids. Phyton-Int J Exp Bot. 2022;91(1):33-43 https://doi.org/10.32604/phyton.2022.016136
IEEE Style
A. Ibarra-Sánchez, J.E. Rodríguez-Pérez, A. Peña-Lomelí, C. Villanueva-Verduzco, and J. Sahagún-Castellanos, “General and Exact Inbreeding Coefficient of Maize Synthetics Derived from Three-Way Line Hybrids,” Phyton-Int. J. Exp. Bot., vol. 91, no. 1, pp. 33-43, 2022. https://doi.org/10.32604/phyton.2022.016136



cc Copyright © 2022 The Author(s). Published by Tech Science Press.
This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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