Sexual Plant Reproduction
June 21, 2008
Sexual Plant Reproduction covers the dynamics and mechanisms of sexual processes in all plants, including seed and non-seed plants. Principal emphasis is placed on the experimental approaches using biochemical, molecular, biophysical and immunological methods.
The journal also publishes descriptive reports providing new insights on sexual reproduction based on submicroscopic and cytochemical methods. The journal presents original contributions, short communications, contemporary reviews and commentaries on subjects interesting to the community of sexual plant reproduction researchers.
In flowering plants, the anther produces male gametophytes; the sperm is produced in pollen grains that attach to the stigma on top of a carpel, in which the female gametophytes (inside ovules) are located. After the pollen tube grows through the carpel’s style, the sperm cell nuclei from the pollen grain migrate into the ovule to fertilize the egg cell and endosperm nuclei within the female gametophyte in a process termed double fertilization.
The resulting zygote develops into an embryo, while the triploid endosperm (one sperm cell plus two female cells) and female tissues of the ovule give rise to the surrounding tissues in the developing seed. The ovary, which produced the female gametophyte(s), then grows into a fruit, which surrounds the seed(s). Plants may either self-pollinate or cross-pollinate. Non-flowering plants like ferns, moss and liverworts use other means of Sexual Plant Reproduction.
Ferns characteristically produce large diploid sporophytes with rhizomes, roots and leaves; and on fertile leaves called sporangium, spores are produced. The spores are released and germinate to produce smaller gametophytes that are typically heart shaped, small and green in color. The gametophytes or thallus, produce both motile sperm in the antheridia and egg cells in separate archegonia. After rains or when dew deposits a film of water, the motile sperm are marked away from the antheridia that are normally produce on the top side of the thallus, and swim in the film of water to the antheridia and fertilize the egg.
To promote out crossing or cross fertilization the sperm are released before the egg is amenable of sperm, making it more likely that the sperm will fertilize the eggs of another thallus. A zygote is formed after fertilization that grows into a new sporophytic plant. The condition of having separate sporephyte and gametophyte plants is call alternation of generations. Other plants with similar reproductive profits comprise the Psilotum, Lycopodium, Selaginella and Equisetum.
Our Range of Products for Men:
Tribulus Terrestris for Low Libido
The herb has been in use treating various health ailments such as -
- Urinary Genital Support
- Energy and stamina
- Libido and sexual behavior enhancer
- Longer orgasms and climaxes
Increase Sperm Count with Mucuna pruriens
- Mucuna can improve libido since it is best aphrodisiac agent.
- Mucuna helps the nervous system reach optimum performance
- It is many times used to increase sperm count and ovulation in women
- To increase muscle mass and strength
St.Botanica Cosmetics
Recent Articles
Hormones and headache
Hormonal headache occur only in women since a normal female cycle is associated with various hormonal stages and fluctuations in hormonal level is quite often.
How to tackle menopause
The onset of menopause brings down the level of estrogen and interrupts the supply of blood to the ovaries. It is typically demonstrated by symptoms like hot flushes, dizziness and weakness accompanied with trembling of limbs.
How menopause affects attitude towards sex
Each woman differs in her attitude towards sex during and after menopause. Unlike the earlier days, menopausal women are now understood and viewed as ‘females’ with sexual urges and desires
How important is sexual hygiene
All body parts need to be kept clean and hygienic. Likewise, it is essential to keep sexual organs tidy and clean. Generally, it is enough to clean them well during bath with water.
What is endometriosis
Endometriosis refers to the condition in which tissues that are similar to those that grows within the lining of the uterus grows elsewhere in the body These tissues are mostly found to grow
