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Aegilops triuncialis, or barbed goatgrass, is a grass species of the family Poaceae. [1] It is a winter annual native to many areas in Eastern and Mediterranean Europe and Western Asia . [ 2 ] It is considered an introduced , invasive species in North America, mainly in the Western coast of the United States. [ 3 ]
Vegetative reproduction is not evolutionary advantageous; it does not allow for genetic diversity and could lead plants to accumulate deleterious mutations. [5] Vegetative reproduction is favored when it allows plants to produce more offspring per unit of resource than reproduction through seed production. [6]
Outcrossing, cross-fertilization or allogamy, in which offspring are formed by the fusion of the gametes of two different plants, is the most common mode of reproduction among higher plants. About 55% of higher plant species reproduce in this way. An additional 7% are partially cross-fertilizing and partially self-fertilizing (autogamy).
Asexual reproduction in plants occurs in two fundamental forms, vegetative reproduction and agamospermy. [1] Vegetative reproduction involves a vegetative piece of the original plant producing new individuals by budding, tillering, etc. and is distinguished from apomixis, which is a replacement of sexual reproduction, and in some cases involves ...
Johnson grass or Johnsongrass, Sorghum halepense, is a plant in the grass family, Poaceae, native to Asia and northern Africa. [1] The plant has been introduced to all continents except Antarctica, and most larger islands and archipelagos. It reproduces by rhizomes and seeds.
Which playing surface is safer for athletes: natural grass or artificial turf? The question is important not just in football, but also for soccer, recreational sports and high school and college ...
Turtle grass can also sexually reproduce through the production of underwater flowers and hydrophily. Turtle grass is dioecious, which means that there are separate male and female plants, each which produce an imperfect flower containing only one sex. Sexual reproduction takes place from April to July depending on location, though flowering ...
The grass rarely reproduces by seed. [6] It has been noted to reproduce by seed in Portugal, [9] but does not do so in the United States, [10] and it was described as "incapable of fruiting" in Japan. Seeds are sometimes observed but they are apparently rarely viable, with many studies describing zero germination. [6]