Bunga pukul empat: Perbedaan antara revisi
Konten dihapus Konten ditambahkan
Tidak ada ringkasan suntingan Tag: BP2014 |
JThorneBOT (bicara | kontrib) k clean up, replaced: Eudicots → Eudikotil (2), Angiosperms → Angiospermae, Plant]]ae → Plantae]] |
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{{taxobox
|image = Gul-Abas-4-O'clock plant.JPG
|regnum = [[
|unranked_divisio = [[
|unranked_classis = [[
|unranked_ordo = [[Core
|ordo = [[Caryophyllales]]
|familia = [[Nyctaginaceae]]
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}}
'''Bunga pukul empat''' asal [[Amerika Selatan]] ini mempunyai banyak [[warna]], di antaranya [[merah]], [[kuning]], juga [[putih]].<ref name="Utami">
[[File:Seed of mirabilis jalapa.JPG|thumb|left|250px|Biji bunga pukul empat yang bisa dibuat bedak]]
Disebut sebagai bunga [[pukul]] [[empat]] karena biasanya mekar saat pukul empat [[sore]], hal itu dikarenakan adanya [[rangsangan]] [[cahaya]], gerakan ini dinamakan dengan [[fotonasti]].<ref name="Mikrajuddin">
[[File:4 o'clock 1.jpg|thumb|right|250px|Bunga pukul empat warna putih dipadu dengan merah muda sebagai hasil dari penyilangan]]
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==Bentuk Tanaman==
[[Image:
Batang yang dimilikinya adalah [[batang basah]] yang tingginya mencapai
Buahnya yang keras berwarna [[hitam]] dan berbentuk [[bulat]] bisa dibuat sebagai [[bedak]].<ref name="Hembing"/> Selain itu, tanaman ini juga mempunyai [[umbi]] berwarna [[coklat]] kehitaman dengan isi berwarna putih dan berbentuk bulat memanjang dengan ukuran
▲Buahnya yang keras berwarna [[hitam]] dan berbentuk [[bulat]] bisa dibuat sebagai [[bedak]].<ref name="Hembing"/> Selain itu, tanaman ini juga mempunyai [[umbi]] berwarna [[coklat]] kehitaman dengan isi berwarna putih dan berbentuk bulat memanjang dengan ukuran 7-9 cm ber[[diameter]] 2-5 cm.<ref name="Hembing"/>
==Referensi==
{{reflist}}
<!-- ==Flowers and color==
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==Habitat and cultivation==
''M. jalapa'' hails from [[tropical]] [[South America]], but has become naturalised throughout tropical and warm [[temperate]] regions. In cooler [[temperate]] [[region]]s, it will die back with the first frosts, regrowing in the following spring from the tuberous roots. The [[plant]] does best in full [[sun]]. It grows to approximately 0.9 m in height. The single-seeded fruit are spherical, wrinkled and black upon maturity (see picture), having started out greenish-yellow. The plant will self-seed, often spreading rapidly if left unchecked in a garden. Some gardeners recommend that the seeds should be soaked before planting, but this is not totally necessary. In [[North America]], the plant perennializes in warm, coastal environments, particularly in USDA Zones 9–10.
==Genetic studies==
Around 1900, [[Carl Correns]] used the four o'clock as a [[model organism]] for his studies on [[Extranuclear inheritance|cytoplasmic inheritance]]. He used the plant's variegated leaves to prove that certain factors outside the nucleus affected phenotype in a way not explained by [[Gregor Mendel|Mendel's]] theories.<ref name=Miko>[http://www.nature.com/scitable/topicpage/Non-nuclear-Genes-and-Their-Inheritance-589 Miko, I. Non-nuclear genes and their inheritance. Nature Education 1(1), (2008)]</ref> Correns proposed that leaf color in Mirabilis was passed on via a uniparental mode of inheritance.<ref name=Miko/>
Also, when red-flowered plants are crossed with white-flowered plants, pink-flowered offspring, not red, are produced. This is an exception to Mendel's Law of Dominance, because in this case the "red" and "white" genes are of equal "strength" and neither can dominate the other.
[[Image:Seed_of_mirabilis_jalapa.JPG|thumb|300px|right|Seed]]
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Pierce, B. ''Genetics: A Conceptual Approach'', 2nd ed. (New York, Freeman, 2005)
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[[Kategori:Amerika]]
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