Tilianin content and morphological characterization of colchicine-induced autotetraploids in .

Background: Linton & Epling subsp. (Lamiaceae) is an aromatic medicinal plant, characterized by a high concentration of tilianin, a flavonoid with therapeutic potential in cardiovascular diseases. In this study, we have explored the use of colchicine to obtain autotetraploid lines of and analyze their morphological characteristics.

WITHDRAWN: Temperature effects on meristem differentiation and flowering date in tuberose (Agave amica L.).

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Physical mapping of 5S and 18S ribosomal DNA in three species of Agave (Asparagales, Asparagaceae).

Agave Linnaeus, 1753 is endemic of America and is considered one of the most important crops in Mexico due to its key role in the country's economy. Cytogenetic analysis was carried out in Agave tequilana Weber, 1902 'Azul', Agave cupreata Trelease et Berger, 1915 and Agave angustifolia Haworth, 1812. The analysis showed that in all species the diploid chromosome number was 2n = 60, with bimodal karyotypes composed of five pairs of large chromosomes and 25 pairs of small chromosomes.

Meiotic restitution mechanisms involved in the formation of 2n pollen in Agave tequilana Weber and Agave angustifolia Haw.

A cytological analysis of the microsporogenesis was carried out in the Agave tequilana and A. angustifolia species. Several abnormalities such as chromosomal bridges, lagging chromosomes, micronuclei, monads, dyads and triads were found.

Construction of chromosomal recombination maps of three genomes of lilies (Lilium) based on GISH analysis.

Chromosomal recombination maps were constructed for three genomes of lily (Lilium) using GISH analyses. For this purpose, the backcross (BC) progenies of two diploid (2n = 2x = 24) interspecific hybrids of lily, viz. Longiflorum x Asiatic (LA) and Oriental x Asiatic (OA), were used.