rose bushとは 意味・読み方・使い方

名詞

rose bush (plural rose bushes)

1. Alternative spelling of rosebush.
   • 1996, Raoul A. Robinson, “Chapter 4: Infection: Allo-Infection and Auto-Infection”, in Return to Resistance: Breeding Crops to Reduce Pesticide Dependence‎, AgAccess, →ISBN, pages 29-30:

     If a rose bush is completely free of aphids, it is the equivalent of a deserted island. The only possible infection is allo-infection, and this requires a winged aphid. Once it arrives, this allo-infecting aphid, which is invariably a female, will feed on its host and begin to reproduce. Unlike most other insects, it will reproduce without sex, and with live births rather than the laying of eggs. The sexless reproduction is the equivalent of vegetative propagation in plants, and all the progeny are genetically identical to their mother. They constitute a clone. The loss of the egg stage saves time, because the young are born alive. They are also born without wings, because flying is not necessary for auto-infection. The young are all female, and they grow very rapidly as a result of sucking the rich juices of their host. Soon, they too start their own sexless and eggless reproduction. There is then a population explosion of aphids, all auto-infecting the same host plant. All rose growers know how quickly a rose bush can become crowded with aphids. Eventually, over-crowding stimulates the birth of winged individuals, which then fly away to allo-infect a rose bush somewhere else. Ecologists have a special term for this kind of reproduction. They call it r-strategy. An r-strategist species is one that reproduces very rapidly and cheaply, with large numbers of very small offspring. It is a quantity breeder. It can exploit an ephemeral food supply very effectively by producing a population explosion. This explosion is followed by a population extinction when the food supply disappears, usually with the onset of an adverse season. Only a very few individuals survive the winter, or the tropical dry season, but there are enough of them to produce another population explosion in the following favourable season. Most of the serious pests and diseases of our crops are r-strategists, and it is their population explosions that can be so alarming, so damaging, and so very difficult to control.

語源 1

Anglicized form of German Rosenbaum or Rosenbusch.

発音

固有名詞

Rosebush (plural Rosebushs)

1. A surname from German, variant of Rosenbaum or Rosenbusch.

統計情報

• According to the 2010 United States Census, Rosebush is the 60,960 most common surname in the United States, belonging to 330 individuals. Rosebush is most common among White (96.06%) individuals.

語源 2

(This etymology is missing or incomplete. Please add to it, or discuss it at the Etymology scriptorium.)

固有名詞

Rosebush

1. A small village in Maenclochog community, Pembrokeshire, Wales, named after the Rosebush quarry, and possibly an Anglicisation of Welsh Rhos y Bwlch or Rhosbwlch (OS grid ref SN0729).
2. A village in Isabella County, Michigan, United States, named after Rose Bush, wife of James Bush.

アナグラム

• horse bus