That sexual selection can be an active force in plant evolution is still under debate. When the number of pollen grains deposited onto a stigma exceeds the number of available ovules, competition among pollen grains for fertilizations will result in selection on traits that increase siring ability (e.g. pollen tube growth rate). The pistil can be regarded as an arena for pollen competition, whe...

Produk tanaman hias dikategorikan menjadi tiga macam, yaitu hamparan, gantung, dan pot. Marigold (Tagetes erecta L.), Pansy (Viola tricolor Viola odorata L.) merupakan jenis hamparan. Tanaman hamparan umumnya semusim yang ditanam di tanah atau menggunakan polybag. paling umum diperuntukkan sebagai lanskap dekorasi. Tujuan penelitian ini adalah mempelajari aspek hortikultura kelayakan ekonomi us...

Plants of Viola cornuta displaying typical virus symptoms were observed during spring 2003 in a plant nursery in Córdoba, central Argentina. Electron microscopic examinations of symptomatic leaf samples revealed the presence of isometric virus-like particles about 30 nm in diameter. Subsequent serological analysis allowed the identification of the pathogen as a subgroup I strain of Cucumber mos...