نتایج جستجو برای: vitaceae
تعداد نتایج: 256 فیلتر نتایج به سال:
Xylem-dwelling pathogens become systemic, suggesting that microorganisms move efficiently in the xylem. To better understand xylem pathways and how bacteria move within the xylem, vessel connectivity between stems and leaves of Vitis vinifera cv. Chardonnay and Muscadinia rotundifolia cv. Cowart was studied. Three methods were used: (1) the light-producing bacterium, Yersinia enterocolitica, (Y...
Rafflesia is said to be vulnerable to extinction because of its biological peculiarities.1 Being unisexual and dioeciously, the male and female flowers need to bloom synchroniously in the same area for effective pollination by carrion flies to succeed. Without new seeds formed to be deposited onto the mature hosts, no one can guarantee that they will be there in the ecosystem forever. It is tru...
BACKGROUND AND AIMS The distinction between pearl bodies (or pearl glands) and food bodies (FBs) is not clear; neither is our understanding of what these structures really represent. The present work examined the ontogenesis, structure, ultrastructure and histochemical aspects of the protuberances in Cissus verticillata, which have been described since the beginning of the 19th century as pearl...
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