Inbreeding and Genetic Erosion from a Finite Model of a Synthetic Formed with Single Crosses.

When a seed produced by a single-cross (SC) maize hybrid is sown, the resulting grain yield is usually lower than that of the hybrid due to the inbreeding generated. However, if a seed from a mixture of hybrids were sown instead, the synthetic variety thus formed () would have a lower inbreeding coefficient () and a higher grain yield. The grain yield , the finite number of representatives of each parent SC () and the inbreeding coefficient of the parent lines of the SCs () are related to the .

Distribution and Climatic Adaptation of Wild Tomato ( L.) Populations in Mexico.

Tomato ( L.) is a vegetable with worldwide importance. Its wild or close related species are reservoirs of genes with potential use for the generation of varieties tolerant or resistant to specific biotic and abiotic factors.

Haploid Induction in Tomato ( L.) via Gynogenesis.

The generation of new hybrid varieties of tomato ( L.) is the most widely used breeding method for this species and requires at least seven self-fertilization cycles to generate stable parent lines. The development of doubled haploids aims at obtaining completely homozygous lines in a single generation, although, to date, routine commercial application has not been possible in this species.

Climatic Diversity and Ecological Descriptors of Wild Tomato Species ( sect) and Close Related Species ( sect y sect. ) in Latin America.

Conservation and sustainable use of species diversity require a description of the environment where they develop. The objectives were to determine ecological descriptors and climatic diversity of areas along the distribution range of 12 species of wild tomatoes ( sect. ) and four wild species of phylogenetically related groups ( sect.