This study documents the comparative success of seeds and seedlings of the perennial gynodioecious-gynomonoecious weed, Silene vulgaris. in the greenhouse. The importance of experimental design is stressed by comparing two different statistical analyses ofthe data. Seeds were obtained from artificial pollinations in the field: self-fertilization of hermaphrodites, and crossfertilizations of bot...

One of the long-standing mysteries in genomic evolution is the observation that much of the genome is composed of repetitive DNA, resulting in inter- and intraspecific variation in nuclear DNA content. Our discovery of a negative correlation between nuclear DNA content and flower size in Silene latifolia has been supported by our subsequent investigation of changes in DNA content as a correlate...

The disproportionately large involvement of the X-chromosome in the isolation of closely related species (the large-X effect) has been reported for many animals, where X-linked genes are mostly hemizygous in the heterogametic sex. The expression of deleterious recessive mutations is thought to drive the frequent involvement of the X-chromosome in hybrid sterility, as well as to reduce interspec...

The kinetics and mechanisms of a number of characteristic reactions of Si1⁄4C and Ge1⁄4C double bonds have been studied in solution, using laser flash photolysis of silaand germacyclobutanes for generation of the silene and germene reactive intermediates under conditions where they can be detected directly. Substituent, solvent, isotope, and temperature effects on the rate constants for reactio...

Species and populations can be categorized by their sexual systems, depending on the spatial distribution of female and male reproductive structures within and among plants. Although a high diversity of sexual systems exists in Silene, their relative frequency at the genus and infrageneric level is unknown. Here, we carried out an extensive literature search for direct or indirect descriptions ...

Analyses among animal species have found that reproductive isolation increases monotonically with genetic distance, evolves more quickly for prezygotic than postzygotic traits, and is stronger among sympatric than allopatric species pairs. The latter pattern is consistent with expectations under the reinforcement hypothesis. To determine whether similar trends are found among plant species, pat...

Türkiye, yenilebilir yabani ot çeşitliliği açısından oldukça önemli bir potansiyele sahiptir. Başta Ege Bölgesi olmak üzere, ülkenin birçok yerinde tüketimini görmek mümkündür. Bölgesi, sahip olduğu coğrafik özellikler ve iklim koşulları nedeniyle zengin çeşitliliğe ev sahipliği yapmaktadır. Bölgenin söz konusu yöre halkının yaşamına da etki etmiştir. Yöresel yemeklerde otların sıklıkla kullanı...