linkedin post 2019-02-17 07:13:08

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LEAVES DETECT DAYLENGTH. "Daylength therefore is perceived in leaves and results in a localized change in the properties of that leaf. Flowering then occurs as a result of a signal transmitted from the leaves to the apex. The change in the leaf is termed induction, while the response at the apex leading to the initiation of flowering is sometimes called evocation." https://lnkd.in/d_f7kfY View in LinkedIn
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linkedin post 2019-02-17 07:11:34

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LEAF VS SHOOT PHOTORECEPTIVITY. "When either the leaves or the shoot tips of photoperiodically sensitive plants are exposed to different daylengths, flowering depends on the daylength given to the leaves and not to the apex. In several instances, leaves from plants, which have been given a daylength treatment that initiates flowering have been grafted on to plants that have not been exposed to permissive daylengths, with the result being flowering in the receptor plants." https://lnkd.in/d_f7kfY View in LinkedIn
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linkedin post 2019-02-17 07:09:03

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DARK- AND LIGHT-DOMINANT. "Also, in long day plants, unlike in short day plants, the amount and spectral composition of the light given during the day period, especially in the latter part, has a large effect on flowering. If the response to daylength depends primarily on the length of the dark period, the plants are called dark-dominant and conversely, if the light period is the main influence, they are called light-dominant. In general, most short day plants are dark-dominant and most long day plants are light-dominant." https://lnkd.in/d_f7kfY View in LinkedIn
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linkedin post 2019-02-16 06:04:55

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NIGHT BREAKS. "If a long night is interrupted by a short (e.g. 30 min) period of light (or night break) near the middle, short day plants respond as if they have been exposed to an long day. For long day plants, such night breaks are only effective if given in combination with daylengths that are just longer than those needed to permit flowering or if they are of several hours duration." https://lnkd.in/d_f7kfY View in LinkedIn
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linkedin post 2019-02-18 05:56:59

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SURREAL NUMBERS. "Conway also discovered a new class of numbers, infinitely large and infinitesimally small, which are now known as “surreal numbers”. Those achievements earned him a spot as a fellow of the Royal Society of London for Improving Natural Knowledge, the oldest scientific society in the world." https://lnkd.in/d7BeTe8 View in LinkedIn
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linkedin post 2019-02-18 05:55:21

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RARE POLYMATH. "John Horton Conway. He is one of the greatest living mathematicians, with a sly sense of humour, a polymath’s promiscuous curiosity, and a compulsion to explain everything about the world to everyone in it. According to Sir Michael Atiyah, former president of the Royal Society and arbiter of mathematical fashion, “Conway is the most magical mathematician in the world.” https://lnkd.in/d7BeTe8 View in LinkedIn
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linkedin post 2019-02-18 05:52:45

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JOHN CONWAY. "Now 77, John Horton Conway is perhaps the world’s most lovable egomaniac. He is Archimedes, Mick Jagger, Salvador Dalí, and Richard Feynman, all rolled into one. For many years, he worried that his obsession with playing silly games was ruining his career – until he realised that it could lead to extraordinary discoveries." Read this biography of this extraordinary man. https://lnkd.in/d7BeTe8 View in LinkedIn
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linkedin post 2019-02-17 07:29:04

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SO ENDS this first of three weekends on plant clocks. These clocks are found in all creatures, and are very robust, internally-driven mechanisms that drive physiology and behavior. Plants may appear simple to some people, but this phenomenon reveals the complexity of these curious creatures that we share the planet with. View in LinkedIn
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linkedin post 2019-02-17 07:25:28

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TEMPERATURE NEUTRALITY. "A third characteristic of all circadian rhythms is temperature compensation; the period remains relatively constant over a range of ambient temperatures. This is thought to be one facet of a general mechanism that buffers the clock against changes in cellular metabolism." https://lnkd.in/d4JRQbh View in LinkedIn
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