Search results
Results from the WOW.Com Content Network
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 ...
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]
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 ]
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).
Syringodium filiforme, commonly known as manatee grass, is a species of marine seagrass. It forms meadows in shallow sandy or muddy locations in the Caribbean Sea and the Gulf of Mexico, and is also found in the Bahamas and Bermuda. [1] [2] It occurs to a depth of about 20 m (66 ft), and even deeper where water is very clear. [1]
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.
Leersia hexandra is a species of grass known by the common names southern cutgrass, clubhead cutgrass, and swamp rice grass. [3] It has a pantropical distribution. [ 4 ] It is also an introduced species in many regions, sometimes becoming invasive , and it is an agricultural weed of various crops, [ 3 ] especially rice . [ 5 ]
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]