Plantago ovata Forssk. (Plantaginaceae) is a species that, in North America, inhabits desert and Mediterranean habitats of the southwest United States, northwest Mexico, and the Channel Islands of California and Mexico. In the Eastern Hemisphere, P. ovata inhabits desert regions ranging from the Canary Islands, across northern Africa to India....
The nuclear ribosomal DNA (nrDNA) internal transcribed spacer (ITS) region has been characterized in the sister genera Larix and Pseudotsuga (Pinaceae). Complete sequences were obtained for seven species of Larix from North America and Eurasia and five species of Pseudotsuga from western North America and eastern Asia. ITS region lengths...
Species of Botrychium reproduce by spores that form subterranean gametophytes and a few, like B. pumicola, also reproduce asexually with subterranean sporophytic gemmae. The goal of this study was to examine the genetic diversity of B. pumicola populations and to better understand the role of gemmae. Ninety-nine individuals from three...
Mapped cpDNA restriction site characters were analyzed cladistically and the resulting phylogenetic hypotheses were used to test monophyly and relationships of the infrageneric classification of Lathyrus (Fabaceae) proposed by Kupicha (1983, Notes from the Royal Botanic Garden Edinburgh 41: 209–244). The validity of previously proposed classification systems and questions presented...
We studied the natural hybrid (Fragaria ×ananassa subsp. cuneifolia) between
two sexually dimorphic octoploid strawberry species (F. virginiana and F.
chiloensis) to gain insight into the dynamics of sex chromosomes and the
genesis of sexual dimorphism. Male sterility is dominant in both the parental
species and thus will be inherited...
We studied the natural hybrid (Fragaria ×ananassa subsp. cuneifolia) between
two sexually dimorphic octoploid strawberry species (F. virginiana and F.
chiloensis) to gain insight into the dynamics of sex chromosomes and the
genesis of sexual dimorphism. Male sterility is dominant in both the parental
species and thus will be inherited...
We studied the natural hybrid (Fragaria ×ananassa subsp. cuneifolia) between
two sexually dimorphic octoploid strawberry species (F. virginiana and F.
chiloensis) to gain insight into the dynamics of sex chromosomes and the
genesis of sexual dimorphism. Male sterility is dominant in both the parental
species and thus will be inherited...
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cuneifolia. 3
Rajanikanth Govindarajulu1, Aaron Liston2 and Tia-Lynn Ashman1* 4
5
1Department of
The cultivated strawberry, Fragaria Xananassa, is one of the youngest domesticated plants. Its 18th century origin via hybridization in Europe between the North American F. virginiana and the South American F. chiloensis was documented by the botanist Antoine Nicolas Duchesne. His 1766 “Natural History of Strawberries” is an extraordinary work...
We studied the natural hybrid (Fragaria × ananassa subsp. cuneifolia) between two sexually dimorphic octoploid strawberry species (Fragaria virginiana and Fragaria chiloensis) to gain insight into the dynamics of sex chromosomes and the genesis of sexual dimorphism. Male sterility is dominant in both the parental species and thus will be...
Background: Through next-generation sequencing, the amount of sequence data potentially available for phylogenetic analyses has increased exponentially in recent years. Simultaneously, the risk of incorporating ‘noisy’ data with misleading phylogenetic signal has also increased, and may disproportionately influence the topology of weakly supported nodes and lineages featuring rapid radiations and/or...