(n.) Any plant of the genera Asclepias and Acerates, abounding in a milky juice, and having its seed attached to a long silky down; silkweed. The name is also applied to several other plants with a milky juice, as to several kinds of spurge.
Example Sentences:
(1) Experimental vein severance renders milkweed leaves edible to generalist herbivores that do not show vein-cutting behaviors and ordinarily ignore milkweeds in nature.
(2) Many mandibulate insects that feed on milkweeds, or other latex-producing plants, cut leaf veins before feeding distal to the cuts.
(3) The significance of these findings are discussed in light of the recent discovery that the C28-ecdysone, makisterone A, is the predominant molting hormone inthe embryonated egg of the milkweed bug.
(4) Chromosomal fragments and translocations induced by x-rays in the sperm of adult milkweed bugs, Oncopeltus fasciatus (Dallas), were detected in the meiotic cells of F(1), F(2), and F(3), males and caused high levels of sterility in lintreated progeny.
(5) The WWF, which carries out the census of the Mexican colonies in co-ordination with the Mexican government, says the extensive use of herbicides is wiping out vast quantities of the milkweed that provides the butterflies with their main food source and breeding grounds.
(6) But research by Lundgren and his team also found that 60% of the milkweed in their South Dakota study area was contaminated by the pesticide, which even at low levels causes monarch larvae to grow much more slowly and reach much smaller size.
(7) Polinnators are important to a huge portion of our food supply ... anything that flowers.” One reason for the decrease is a drop in the amount of milkweed, which monarch larvae eat, Lundgren said.
(8) Significant amounts of immunoreactive cardiac glycoside were found to be present in the ornamental shrubs: yellow oleander (Thevetia peruviana); oleander (Nerium oleander); wintersweet (Carissa spectabilis); bushman's poison (Carissa acokanthera); sea-mango (Cerbera manghas); and frangipani (Plumeria rubra); and in the milkweeds: redheaded cotton-bush (Asclepias curassavica); balloon cotton (Asclepias fruiticosa); king's crown (Calotropis procera); and rubber vine (Cryptostegia grandifolia).
(9) Several aromatic terpenoid ethers possess a high degree of morpho-genetic activity when assayed on the yellow mealworm Tenebrio molitor L. and the milkweed bug Oncopeltus fasciatus (Dallas).
(10) Cortisol increased growth and differentiation in the large milkweed insect (Oncopeltus fasciatus).
(11) Analysis of the sterols of the milkweed bug, Oncopeltus fasciatus (Dallas) and dietary sunflowerseeds revealed that there is little, if any, conversion of dietary C28 OR C29 phytosterols to cholesterol in this phytophagous insect.
(12) In order to determine whether the genes coding for ribosomal RNA (rRNA) are amplified in the telotrophic ovary of the milkweed bug Oncopeltus fasciatus, the percentages of the genome coding for ribosomal RNA in somatic cells, spermatogenic cells, ovarian follicles, and nurse cells were compared.
(13) The use of herbicides destroying milkweed is directly linked to the mass cultivation in the great plain states of the US of genetically modified soybean and corn crops with inbuilt resistance to chemicals that the rest of the plants in the areas sprayed do not have.
(14) We have analyzed electron micrographs of chromatin-associated fiber arrays from embryos of the milkweed bug, Oncopeltus fasciatus.
(15) Scientists are extremely concerned that monarch populations are declining because the caterpillar's only food source – milkweed – is being eradicated.
(16) The persistence of these fragments through numerous generations of cells confirmed the holokinetic nature of the milkweed bug chromosomes.
(17) SK Films, the American distributor, is encouraging audiences to grow milkweed and also to create their own butterfly gardens by selling seed-packets in cinemas.
Weed
Definition:
(n.) A garment; clothing; especially, an upper or outer garment.
(n.) An article of dress worn in token of grief; a mourning garment or badge; as, he wore a weed on his hat; especially, in the plural, mourning garb, as of a woman; as, a widow's weeds.
(n.) A sudden illness or relapse, often attended with fever, which attacks women in childbed.
(n.) Underbrush; low shrubs.
(n.) Any plant growing in cultivated ground to the injury of the crop or desired vegetation, or to the disfigurement of the place; an unsightly, useless, or injurious plant.
(n.) Fig.: Something unprofitable or troublesome; anything useless.
(n.) An animal unfit to breed from.
(n.) Tobacco, or a cigar.
(v. t.) To free from noxious plants; to clear of weeds; as, to weed corn or onions; to weed a garden.
(v. t.) To take away, as noxious plants; to remove, as something hurtful; to extirpate.
(v. t.) To free from anything hurtful or offensive.
(v. t.) To reject as unfit for breeding purposes.
Example Sentences:
(1) Careless Herbicidal aerial spray of a field for weed control and defoliation of cotton before machine picking, resulted in the contamination of an adjoining reservoir, killing large volume of fish.
(2) In lieu of crop rotation and biodiversity (the non-toxic way to control weeds), the MSU extension service promotes what the article calls a "diversified herbicide program".
(3) The condition has occurred for many years and has been thought to have been associated with ingestion of Crofton weed (Eupatorium adenophorum).
(4) There is, of course, a place for regulatory vigilance, for forcing entire institutions to clean up after themselves by paying hefty fines, and weeding out bad practices.
(5) In allergologic out-patient departments of Dubrovnik, Split, Sibenik, Zadar, Pula and Rijeka, 300 patients with pollinosis have been tested by the application of the prick method of group allergens of grass, tree and weed pollen, particularly of Parietariae (pellitory) pollen.
(6) The coalition claims that authorities were forcing teachers, businessmen and students to weed the fields or pick cotton or face fines of up to 1 million soum (about £210) for university students.
(7) Bob McCulloch, the St Louis County prosecutor who oversaw the state grand jury inquiry that looked into Brown’s death, insisted that discrimination by law enforcement was a rarity but said authorities must “weed it out”.
(8) Unions blame 70% fall in employment tribunal cases on fees Read more “The government originally said making people pay would weed out vexatious claims.
(9) He also promised Thatcher a new crackdown on immigrant male fiances, saying that he was thinking of "a kind of steeplechase designed to weed out south Asians in particular".
(10) The substances studied generally proved very active against the weeds tested and showed marked specificity of action towards Setaria and Echinochloa.
(11) We haven’t ascertained how much of the forests it has taken over, but a significant portion may in reality be unpalatable weeds and effectively unusable from an elephant’s perspective.
(12) In a statement on Wednesday , he said that he will criticise the Met for "the routine gathering and retention of information that was collateral, not linked to an operation or the prevention of crime and it should have been disposed of as part of a weeding process."
(13) But the matriarch of women who toke is Nancy Botwin ( Mary-Louise Parker ) in the long-running TV series Weeds .
(14) One of their number, James Howard Kunstler, blasted the High Line as "decadent" , "a weed-filled 1.5 mile-long stretch of abandoned elevated railroad", where "mistakes are artfully multiplied and layered", such as "the notion that buildings don't have to relate to the street-and-block grid ... instead of repairing the discontinuities of recent decades, we just celebrate them and make them worse".
(15) We have the know-how to track organisations that achieve the best results for patients, and weed out those that don't come up to scratch."
(16) After weeding, planting or harvesting, people attempt to make money.
(17) Animal Practice is a Universal Television production based on an irreverent New York veterinarian, played by Justin Kirk of Weeds and Angels in America.
(18) Some physicochemical properties of the mitochondrial DNAs (mtDNA) from plants of flax, broad bean and mung bean, and from tissue culture cells of jimson weed, soybean, petunia and tobacco were determined.
(19) Weed and water samples collected from river water abstraction points, reservoirs, tap water supplies, and animal water troughs fed from this supply all contained low levels of iodine-125.
(20) There has been a troubling several decade-long pattern of denial on the part of the seed patent holders over the likelihood of resistance emerging - for example Monsanto authors of a 1997 paper asserted weed resistance would never happen.