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Материал из Антэкология /// Anthecology
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AID: 0000600404
Английский
APR 1
APRm
Flower Colour Changes in Lantana camara
Journal of Experimental Botany, . V. 35. No. 11. P. 16561662 (7).
Lantana camara flowers undergo colour change subsequent to anthesis. In the colour variant selected for the present study, pink buds, yellow newly-opened flowers and ageing orange, scarlet and magenta flowers are found in the same inflorescence. The flower pigments were chemically analysed and identified as delphinidin monoglucoside and β-carotene. Thrips are regular pollinators of Lantana under Delhi conditions. Pollination was identified as the trigger for rapid anthocyanin synthesis. Even the presence of one pollen grain on the stigma of a yellow flower was sufficient to cause colour change. Injection of a suspension of pollen into flowers opened in vitro caused pigment changes. An extract of Lantana pollen was also able to simulate the effect of pollination, suggesting the involvement of a pollen factor. The post-pollination shift in petal colouration is caused by the masking of carotenoids by differential amounts of anthocyanin. As thrips are attracted to only yellow flowers, chromatic changes play a role in conserving pollinator energy.
Ключевые словаAnthecology, Floral pigments, Опыление
Таксоны растенийLantana camara, Lantana
В подборкахОсновная литература
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1 0 0.1 98.47% 47
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1 0 0.36 91.76% 136
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0 0 0 98.25% 280
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0 0 0 99.85% 526
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0 0 0 99.93% 525


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