Amaranthus retroflexus (redroot pigweed) is another small-seeded summer annual dicotyledon species that has responded inconsistently to changes in tillage systems. Branch of flowering amaranth at sunny summer day in meadow. Dark germination of Amaranthus retroflexus L. seeds at 35° increased after several days of prechilling at 20° or lower. Amaranthus gangeticus (wordt ook wel ‘Elephant Head’ genoemd) Amaranthus tricolor (ook wel Tampala genoemd; En dan zijn er nog flink wat hybriden. Packet(standard): $3.50; 1/8 oz: $4.00; 1/4 oz: $7.50; 1/2 oz: $14.00; 1 oz: $26.00 - 25,000 seeds/oz 9. Groeit langs waterkanten, bermen, akkers, braakliggende gronden. English: Common Amaranth. Amaranthus retroflexus. redroot pigweed, rough pigweed. Tall water-hemp seeds do not have a rim and are reddish-brown. Characteristics and usage: Edible leaves and seeds De grote, elliptische bladeren zijn groen, iets behaard aan de onderkant en eetbaar. They were germinated in lots of 100 in Petri dishes on filter paper moistened to a shiny appearance with tap water. 1918. Amaranthus retroflexus ← → Other Common Names: careless weed. Primary Disseminule Type. Mature Amaranthus retroflexus L. seeds (lot 46) were collected near Beltsville, Maryland, in August, 1966, and held at -10 C in sealed containers. Family: Amaranthaceae Common Names: Amaranth, Pigweed Description: Amaranth grows in disturbed soil from dry to moist climates. Most pigweeds are tall, erect-to-bushy plants with simple, oval- to diamond-shaped, alternate leaves, and dense inflorescences (flower clusters) comprised of many small, greenish flowers. seed. Weed Seed Bank and Seedling Biology Amaranthus retroflexus seed germination was decreased by sorghum extracts, and sorghum extract concentration of 20% inhibited seed germination. Naamgeving (Etymologie): Amaranthus komt van het Griekse a (niet) en marainomai (ik verwelk), omdat de bloemen wel verdrogen, maar niet afvallen. 2015 Mar;31(3):247-54. doi: 10.1177/0748233712471702. Amaranthus … Sorghum leaf and shoot extracts in SPECIES: Amaranthus retroflexus FIRE ECOLOGY OR ADAPTATIONS : Rough pigweed seeds are an important part of the seedbank in many habitats, even when plants are almost absent [ 16 ]. Jan Kępczyński, Paweł Sznigir, Response of Amaranthus retroflexus L. seeds to gibberellic acid, ethylene and abscisic acid depending on duration of stratification and burial, Plant Growth Regulation, 10.1007/s10725-012-9774-3, 70, 1, (15-26), (2012). Dunn (1905) described it as `now very common in most parts of Europe, including England`, but later changes in distribution are unclear. 10:529- 530. Het geslacht komt met zo'n zestig soorten wijdverspreid voor van gematigde tot tropische streken. Amaranthus tricolor L.. Pertinent Synonyms & Notes (particularly those used in California; go to GRIN for other synonyms). Amaranthus retroflexus komt oorspronkelijk uit N-Amerika maar komt nu ook voor in bijna gans Europa. Amaranthus hybridus: sepals of fruit-bearing flowers acute at apex and inflorescence with many, short, croweded, thick branches of flowers (vs. A. retroflexus, with sepals of fruit-bearing flowers rounded to truncate at apex and inflorescence with few to many, slender, lax branches of flowers). Fall moldboard plowing in plots with high seed populations reduced redroot pigweed emergence the following spring by more than 90 percent (from 3,500 to 250 per 10 square feet), but plowing fields in which seed production had been prevented for six years brought deeply buried seeds to the surface, and thereby increased emergence from 1 to 25 per 10 square feet. Papegaaienkruid - Amaranthus retroflexus. Amaranthus retroflexus var. Invasiveness Rank: ... seed each and tops that open . Common Name(s): red-root amaranth [English] redroot pigweed [English] careless weed [English] rough pigweed [English] redroot amaranth [English] Taxonomic Status: Current Standing: accepted Data Quality Indicators: Record Credibility Rating: Where Found. products new description - Similar in all uses as Amaranthus hypchondriacus; this species has black seeds. Redroot pigweed seed is larger by up to 0.5 mm, has a pronounced rim, and is black. A. retroflexus was known in gardens by 1759, and escapes, of which the earliest on record was in 1853, have been reinforced by introductions with shoddy, bird-seed and soya-bean waste. Pertinent Common Names (particularly those used in California; go to GRIN for other common names). Each utricle splits open in the middle to expose a single glossy black to dark brown seed that is 1 to 1.2 mm long and ovate (Virginia Tech Weed Identification Guide, 2005). Phytotoxical effect of Lepidium draba L. extracts on the germination and growth of monocot (Zea mays L.) and dicot (Amaranthus retroflexus L.) seeds Toxicol Ind Health. The results demonstrated that atrazine or tribenuron-methyl had carry-over effects on the F1 generation of A. retroflexus. To release their dormancy at the above temperatures, the seeds were stratified at a constant temperature (4 °C) under laboratory conditions or at fluctuating temperatures in soil or by outdoor burial in soil. A proximate analysis of seed of com- mon pigweed, Amaranthus retroflexus L. Jour. Vormt rechtopstaande goed vertakte stengels met dikke groenwitte pluimen. The glossy black seeds each form inside a 2 mm long utricle that splits open at maturity. Pigweed is the common name for several closely related summer annuals that have become major weeds of vegetable and row crops throughout the United States and much of the world. Frysk: Pappegaaikrûd. Am. Amaranthus retroflexus Red-root amaranth, redroot pigweed, common amaranth, pigweed amaranth, and common tumbleweed. Amaranthaceae. salicifolius I. M. Johnston Family: Amaranthaceae . Amaranthus retroflexus, like all amarants, rosette leaves are edible to make boiled soups along with other herbs. Abstract. (Amaranthus retroflexus): An erect summer annual that may reach 6 1/2 feet in height. Tot het geslacht behoren verscheidene sier- en voedselgewassen. Amarant (Amaranthus) is een geslacht van eenjarige, kruidachtige planten uit de amarantenfamilie (Amaranthaceae). Seeds were held in … ... A plane filled with amaranth seeds, top view, can be used as a background. salicifolius I.M. As an obligate initial community species, rough pigweed needs bare, disturbed sites in order to establish [ … Amaranthus retroflexus, Red-root amaranth, Seeds per gram: 2200 Cultivation / direction of sowing: sow seed directly where it is to grow in lating spring. 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