Pomological research is mainly focused on the development, cultivation and physiological studies of fruit trees. The introduction to floriculture pdf of fruit tree improvement include enhancement of fruit quality, regulation of production periods, and reduction of production cost. Pomology has been an important area of research for centuries.
United States from foreign expeditions, and developing experimental lots for these fruits. In response to this increased interest and activity, USDA established the Division of Pomology in 1886 and named Henry E. Van Deman as chief pomologist. An important focus of the division was to publish illustrated accounts of new varieties and to disseminate research findings to fruit growers and breeders through special publications and annual reports. The introduction of new varieties required exact depiction of the fruit so that plant breeders could accurately document and disseminate their research results. The study of pomology has somewhat dwindled over the past century. This page was last edited on 7 December 2017, at 13:37.
This is a good article. Follow the link for more information. Individual species and genera may have more or less derived formulas. Plants in this family have evolved with a fair amount of morphological diversity despite genetic similarity.
The leaves are linear in shape, with their veins usually arranged parallel to the edges, single and arranged alternating on the stem, or in a rosette at the base. Consequently, many sources and descriptions labelled “Liliaceae” deal with the broader sense of the family. Liliaceae are widely distributed, mainly in temperate regions of the Northern Hemisphere and the flowers are insect pollinated. A number of Liliaceae genera are popular cultivated plants in private and public spaces. Lilies and tulips in particular have had considerable symbolic and decorative value, and appear frequently in paintings and the decorative arts.
They are also an economically important product. The diversity of characteristics complicates any description of the Liliaceae morphology, and confused taxonomic classification for centuries. Most flowers are large and colourful, except for Medeoleae. The leaves are generally simple and elongated with veins parallel to the edges, arranged singly and alternating on the stem, but may form a rosette at the base of the stem. The aerial stem is unbranched. The taxonomy of the Liliaceae has a very complex history. The family was first described in the eighteenth century, and over time many other genera were added until it became one of the largest of the monocotyledon families, and also extremely diverse.