Orchid breeders dream of orchid mutation. These four precious orchids are infected by the orchid strain.

The variation of orchids, like that of all living things in nature, is very complex. The frequency of biological variation is very low under natural conditions. Biological variation is divided into two kinds, one is genetic variation, the other is orchid virus variation, today for orchid friends to share plant virus and orchid variation.

The damage of orchid plants to the virus has a variety of manifestations, morphological variation. Some variations, such as dwarfing, yellowing of various flowers and leaves (albino strips, spots), deformities of tooth leaves and floral organs, and variation of flower color can increase the ornamental value of orchids, which is the dream of orchids.

I. known orchid virus

It is reported that the plant viruses that infect orchids (including Cymbidium) at home and abroad are: orchid mosaic virus, orchid ringspot virus, orchid light mosaic virus, orchid ringspot virus, orchid mosaic virus, Dendrobium mosaic virus, tomato ringspot virus, cucumber mosaic virus and so on. An old flower friend once told Mu that he had seen a report that the rhabdovirus of rice yellow dwarf disease could infect orchids.

Second, the expression of virus infecting orchids

"Ye Yilan" can make the stripe more obvious by appropriately increasing light, controlling moisture, and increasing cultivation temperature, which is the experience of some Yilan people, and it is also circumstantial evidence that chimera orchid may be the formation of virus infection. Of course, the phenomenon of "leaf art" caused by medicament and radiation stimulation can not be ruled out here.

The symptoms of Lan strain infected with the virus are as follows:

1. Yellowing virus: the Phnom Penh, stripe and spot of Ye Yilan may be related to yellowing virus. Such as "Hou Ming", that is, lines or spots do not appear in the early stage, but lines and spots appear in the later stage, because the early temperature is lower and the growth rate of the virus is not as fast as that of the plant. In the later stage, the growth rate of plants slowed down, the growth of virus increased relatively, plants showed symptoms of virus damage, and yellow and white lines or patches appeared on the leaves. Gold and silver "edge", "stripe" and "spot", depending on the seasons and years, some new seedlings have, some are not, some are good, some are poor, some are, some are not, and there are some phenomena every other year. Sometimes "gold to silver", that is, golden lines, plaques will turn white, the reason should also be related to the increase in the number of viruses in leaf tissue.

2. "Dharma" phenomenon, Dharma is a popular and valuable variety of orchids in Taiwan and Hong Kong. Dharma has various types of leaf flower changes, which is its special charm. From the "green floor" Dharma seedlings to the cultivation of famous Dharma products with various types of leaf flowers, it is necessary to have conditions and technology. A Taiwanese orchid friend once said that he had this technology. We have also seen tens of thousands of yuan in Chengdu after the purchase of Damoqing floor seedlings returned because of not performing the green floor Damo seedlings.

Damoqing floor training to the art, is a "after-Ming" category, should be the course of viral disease. The technology may be condition control methods such as temperature increase and nutrition control. The plant virus that caused the yellowing and "artistry" of Dharma is likely to be the pathogen of water yellow dwarf disease. This kind of virus can be transmitted by insect vectors such as leafhoppers. The plant system is poisonous and the asexual reproduction (ramet) can spread, but the seed can not transmit the virus.

3. Dwarf virus: various dwarf plant groups appear in some orchid species, which make orchid ornamental have a new field, and dwarf species sometimes appear strange flowers. Most of these dwarfs should be related to plant dwarf virus. Orchid dwarf species also have "walking dragons", that is, most of the leaves have dark stripes with longitudinal protuberances, which are consistent with the deformities caused by virus infection.

4. Tooth leaf virus:

At present, the "crystal" in Ye Yilan has received a lot of attention. Tooth edges are very rare. "Crystal" means that the tip of the orchid leaf is transparent. This phenomenon is similar to the tooth leaf phenomenon caused by tooth leaf virus and should be related to plant virus.

Dear Orchid Friends, is there anything you don't understand about orchid variation? If you also like raising orchids, welcome to follow and forward, and look forward to your comments and likes, thank you!