Historians of science have often neglected the eighteenth century because it lacks famous figureheads like Isaac Newton or Charles Darwin, yet this was a crucial period when science started to become established and gain prestige, writes Patricia Fara in a new book*. With their Enlightenment contemporaries, Carl Linnaeus in Sweden and Joseph Banks in Britain illustrate how scientific research w...

The success of sexual plant reproduction is directly influenced by specific interactions between the pollen and pistil. Light, fluorescence and scanning electron microscopy techniques were used to evaluate the steps of pollination in sour passion fruit plants (Passiflora edulis Sims). In the compatible interaction, pollen tubes grow through stigma projections towards the ovary. The pollen grain...

Plants have been the basis of many traditional medicines throughout the world for thousands of years and have continued to provide new remedies to mankind. They are one of the richest sources of bioactive compounds. The genus Passiflora L. comprises about 520 species of dicotyledonous plants in the family Passifloraceae. Passiflora incarnata and P. alata, also commonly known as Passion flower, ...

Based on a careful examination of the onset violet colored dots along filaments in developing floral bud stage and formation alternating bands white color matured flowers Passiflora incarnata (Passion flower), it is concluded that pattern arises from competition between production anthocyanin colorless flavonols filaments. The activator-inhibitor model Gierer Meinhardt with reaction diffusion t...

The euglossine bee Eulaema nigrita plays an important role for the pollination of native and economically important plants, such as the sweet passion-fruit Passiflora alata. E. nigrita uniquely collects the nectar from the flowers of P. alata, nevertheless, it needs to visit other plants to collect pollen, nectar and other resources for its survival. There are two methods to identify the specie...

ABSTRACT In breeding programs, the identification of genetic variability and knowledge constitutions existing within segregating populations are fundamental importance for success continuation program. The present study aimed to quantify diversity among progenies a sour passion fruit population based on morphoagronomic variables flowers fruits using Ward-MLM (modified location model) procedure,...