Sensitive Stamens in Portulaca
نویسندگان
چکیده
منابع مشابه
Optional use of CAM photosynthesis in two C4 species, Portulaca cyclophylla and Portulaca digyna.
Low levels of crassulacean acid metabolism (CAM) are demonstrated in two species with C4 photosynthesis, Portulaca cyclophylla and P. digyna. The expression of CAM in P. cyclophylla and P. digyna is facultative, i.e. optional. Well-watered plants did not accumulate acid at night and exhibited gas-exchange patterns consistent with C4 photosynthesis. CAM-type nocturnal acidification was reversibl...
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Hermaphroditic flowers have evolved primarily under the selection on male function. Evolutionary modification often leads to stamen differentiation within flowers, or "heteranthery", a phenomenon intrigued scientists since the 18(th) century until recently. However, the genetic basis and molecular regulation mechanism has barely been touched. Here we conducted comparative transcriptome profilin...
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I n 1914 Mr. B. T. AVERY, who was then my gardener assistant a t the CONNECTICUT AGRICULTURAL COLLEGE, called my attention to a single dwarf individual in a bed of red-flowered plants from commercial seed of a variety of Portulaca grandijora. This plant formed a low compact pin-cushion-like growth in striking contrast to the long straggling habit of the normal plants near it. It is the origin o...
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ژورنال
عنوان ژورنال: The American Naturalist
سال: 1873
ISSN: 0003-0147,1537-5323
DOI: 10.1086/271180