Phalaenopsis part 3

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danero2004

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Moderator
A Japanese university’s announcement that they have successfully produced a genetically modified blue Phalaenopsis orchid has been met with excitement from the orchid community


Flower colour is a particularly visible sign of the diversity of orchids. Amongst the pinks, yellows, reds, whites and greens, two colours are notable by their absence: blue and black. Orchids do not naturally produce black pigments but intensive breeding has produced hybrids such as Fredclarkeara After Dark ’Feuerbach’, widely regarded as a truly black flower. The elusive nature of the black orchid is reflected in the term’s popular uses: a DC comics superheroine, a Doctor Who episode, and an exclusive perfume by Tom Ford. Similarly, blue pigments are rare in the orchid family; the well known blue orchid Vanda coerulea actually has purple-blue flowers and the only wild orchids with true blue flowers are some Thelymitra species from Western Australia. Blue orchid is also the name of a single by The White Stripes (the lyrics of which provided the title of this post).

Of particular interest for commercial orchid growers is creating a blue orchid for the mass market as the colour is completely absent from the Phalaenopsis, the most popular orchids in international trade. Some nurseries have resorted to injecting dye into the flower spikes of white plants, although they produce white flowers the next time they bloom.

For these reasons, Chiba University’s breakthrough in creating a blue-flowered plant was of great interest to commercial orchid growers and there were long queues to see the official unveiling of the plants at their world debut in Okinawa in February 2013. The plant in question was produced by inserting a gene from the bright blue Asiatic dayflower Commelina communis in to a white Phalaenopsis hybrid. After several years of research the resulting plants produced deep blue flowers and will, in theory, pass this colour on to their offspring. While many are excited, some growers are concerned that ‘designer’ orchids could remove the fun of creating new hybrids.

The conservation implications of the blue orchid are interesting to consider. Due to the ex situ nature of orchid propagation and their requirements for specific pollinators, there is little chance of GM orchids interbreeding with wild plants, a threat that is of concern for other GM crops. The conservation impact may actually be positive; being able to create orchids with highly sought after qualities in the lab may help to protect orchids in the wild by preventing the collection of novel species. For example, a newly discovered species with an unusual colouration may not be the target of collectors if orchids of any colour can be created to order in a laboratory.
 

edgji

Member
Multumesc, abia astept sa infloreasca si celelalte, au tije noi aproape toate si sunt pline de boboci
 

Anysa

Member
Tija de care va povesteam acum ceva timp, a crescut si se vad primii bobocei, voi cum faceti ca tija sa creasca dreapta? a mea e cam stramba si mi-a fost frica s-o fortez.
 
Cand creste cam de 15 cm o prind de o tija. Depinde de unde rasare. Daca se afla sub o frunza foarte lata, iti cam trebuie 15-20 cm ca sa o prinzi de tija, fara sa se rupa. Daca rasare direct, fara obstacole, o prind si la 10 cm. In timp ce creste tija, mut clema mai sus sau mai prind altele.
Procedez la fel cu orice tija, inclusiv cu pseudobulbii de la Dendro.
 

Catalin

Member
E ok temperatura dar poate ar trebui udate mai frecvent, vad ca sunt cam albicioase radacinile...iar daca planta e achizitionata de curand si a schimbat mediul, scurteaza durata de viata a florilor, asa mi se intampla si mie
 

danya

Active Member
Sunt aproape de calorifer? Am patit si eu ca tine cand le tineam pe pervaz deasupra caloriferului... acum le am mutat in bucatarie unde caloriferul e oprit si sunt multumite.
 

Catalin

Member
danya a spus:
Sunt aproape de calorifer? Am patit si eu ca tine cand le tineam pe pervaz deasupra caloriferului... acum le am mutat in bucatarie unde caloriferul e oprit si sunt multumite.
In poze vad ca pervazul e lipsit de calorifer...dar daca e asa, ai dreptate,aerul tirat de calorifer e cald si uscat ,le dauneaza
 

liliput

Member
Catalin a spus:
E ok temperatura dar poate ar trebui udate mai frecvent, vad ca sunt cam albicioase radacinile...iar daca planta e achizitionata de curand si a schimbat mediul, scurteaza durata de viata a florilor, asa mi se intampla si mie
danya a spus:
Sunt aproape de calorifer? Am patit si eu ca tine cand le tineam pe pervaz deasupra caloriferului... acum le am mutat in bucatarie unde caloriferul e oprit si sunt multumite.
Catalin a spus:
danya a spus:
Sunt aproape de calorifer? Am patit si eu ca tine cand le tineam pe pervaz deasupra caloriferului... acum le am mutat in bucatarie unde caloriferul e oprit si sunt multumite.
In poze vad ca pervazul e lipsit de calorifer...dar daca e asa, ai dreptate,aerul tirat de calorifer e cald si uscat ,le dauneaza
Multumesc foarte mult ptr raspunsuri.Orhideea o am de prin august,acum are flori a doua oara,pe tijele vechi.Calorifer nu am,ci o soba de teracota la aproape 3 metri de ea.Pe pervaz insa e foarte cald..se facea 36 de grade cand ardea soarele,dar frunzele sant super fericite,niciun semn de arsura..Inteleg totusi ca,caldura e de vina,36 de grade..asta e,de asta s-au ofilit,nu?
Multumesc.
 

liliput

Member
Revin cu aceeasi intrebare (aproximativ)....orhideea care a inflorit pe tije secundare a tinut florile cam o luna si gata..o fi prea cald in casa sau nu e destula umiditate? Multumesc.
 

liliput

Member
gradinar1 a spus:
Cu cat e mai cald, cu atat mai putin vor dura florile. Ideal ar fi un 19-20 de grade.
Hmm...deci asa.Da,in casa am in jur de 24.Ce sa-i fac..o mut la 20 de grade,dar nu mai are lumina....Si acum alta intrebare: am citit pe aici ca ingrasamant se pune la orhidee incepand din luna februarie si asa am facut si eu,dar ele din februarie anul trecut si pana acum o luna n-au facut decat frunze,iar acum fac tije.Le las linisite sau le pun iar ingrasaminte?
Multumesc ff mult ptr ajutor.
 

gradinar1

Well-Known Member
Moderator
Lasa-le in pace dar asteapta-te sa dureze mai putin florile. Au nevoie de lumina cand isi formeaza tija florala asa ca acum e preferabil sa stea la lumina.
 

liliput

Member
gradinar1 a spus:
Lasa-le in pace dar asteapta-te sa dureze mai putin florile. Au nevoie de lumina cand isi formeaza tija florala asa ca acum e preferabil sa stea la lumina.
Saru'mana ptr raspuns; da,sant la lumina,pe pervaz.Dureaza mai putin florile daca n-au ingrasamant?? Deci de-aia s-au terminat florile uneia din ele...fiindca n-au avut ingrasamant? Atunci sant impacata,ma gandeam ca e ceva in neregula cu temperatura...umiditatea...Multumesc din nou.
 
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