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>Effect of temperature on induction and production of flowers inLemna paucicostata6746 in uninterrupted and interrupted darkness
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Effect of temperature on induction and production of flowers inLemna paucicostata6746 in uninterrupted and interrupted darkness
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机译：Effect of temperature on induction and production of flowers inLemna paucicostata6746 in uninterrupted and interrupted darkness
Effects of temperatures ranging from 16 to 31°C on induction and production of flowers inLemna paucicostata6746 were studied in uninterrupted and interrupted darkness.In uninterrupted darkness, the growth rate (a) and flowering ratio (φ) increased and the flower production period (P4) decreased as the temperature rose. On the contrary, the pre-flower induction period (P1) and the flower induction period (P2) were independent of temperature except that P2was remarkably extended at 31°C. Thus, a,φand P4may be rate-limited by chemical reactions and P1and P2by physical reactions. P2started at the onset of darkness.A red light pulse given 7 hr after the start of the dark period extended P1, P2and P4without modifying a andφat any temperature. The pulse extended P1by one day irrespective of temperature, and the sensitivity of P1to the pulse was constant at all temperatures. The red light pulse caused obvious extensions of P2and P4at 21–26°C, but no extension at lower and higher temperatures. Thus, the extension of P1by red light seems to be rate-limited by a physical reaction and those of P2and P4by chemical re
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