What is the meaning of somatic embryogenesis?

Somatic embryogenesis is defined as a process in which embryo-like structures are formed from somatic tissues and developed into a whole plant.

Why is somatic embryogenesis important?

Application of somatic embryogenesis

Here, it plays a critical role in clonal propagation, synthetic seed production, germplasm conservation, and cryopreservation. It is used for rapid large-scale propagation of plants for the production of secondary compounds and drugs.

What are the factors affecting somatic embryogenesis?

Factors Affecting Somatic Embryogenesis

  • Explant. The choice of explant depends on the species of plant to be induced for embryogenesis. …
  • Genotype. The genotypic variation between the plants also affects the process of embryogenesis. …
  • Growth Regulators. …
  • Nitrogen Source. …
  • Polyamines.

1 сент. 2020 г.

What is somatic embryogenesis and organogenesis?

Organogenesis involves inducing the vegetative tissue to form organs (shoot or root) which eventually develop into a complete plantlet (small but whole plant), while, somatic embryogenesis is to induce a piece of somatic (vegetative) tissue to develop an embryogenic callus, leading to the formation of a somatic embryo …

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What is somatic embryogenesis PPT?

SOMATIC EMBRYOGENESIS • A process where an embryo is derived from a single somatic cell or group of somatic cells. Somatic embryos (SEs) are formed from plant cells that are not normally involved in embryo formation.

What is the meaning of somatic cells?

A somatic cell is any cell of the body except sperm and egg cells. Somatic cells are diploid, meaning that they contain two sets of chromosomes, one inherited from each parent. Mutations in somatic cells can affect the individual, but they are not passed on to offspring.

What is somatic phase?

The somatic phase consists of coenocytic mass of highly granular protoplasm containing hundreds or thousands of nuclei and vacuoles without cell walls, but delimited only by a thin plasma membrane—a plasmodium (pl.

Which of the following is the main application of embryo culture?

Isolation of hybrid embryos at the immature stage i.e., before abortion and their culture in vitro may circumvent strong post-zygotic barriers. To raise the rare hybrids by rescuing embryos from incompatible crosses is the most popular application of embryo culture.

What factors can affect development of the embryo Foetus?

Genetic, nutritional, environmental, uteroplacental, and fetal factors have been suggested to influence fetal growth. Uteroplacental and umbilical blood flow and transplacental glucose and fetal insulin are major determinants of fetal growth.

Which of the following is cultured to obtain haploid plants?

Haploid plants can be produced through in vitro culture of male gametophytic cells at the microspore or immature pollen developmental stage. These cells respond in vitro by undergoing embryogenesis or haploid callus proliferation.

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What is direct organogenesis?

Direct organogenesis, embryogenesis, micro grafting, meristem culture and its importance for fruit crops. …  Organogenesis takes place in two stages, namely caulogenesis or shoot initiation and rhizogenesis or root initiation.  Both types of organogenesis are controlled by the hormones present in the medium.

WHO reported somatic embryogenesis in carrot?


In 1958, Steward et al. reported the first evidence of somatic embryogenesis with carrot (Daucus carota) cell suspension cultures, which had great similarities with zygotic embryogenesis [128]. Somatic embryogenesis is defined as the propagation of the embryo or plant from single or a group of vegetative cells.

What is meant by Organogenesis?

Organogenesis is the phase of embryonic development that starts at the end of gastrulation and continues until birth. During organogenesis, the three germ layers formed from gastrulation (the ectoderm, endoderm, and mesoderm) form the internal organs of the organism.

How do you make fake seeds?

Artificial seed production through the use of somatic embryos is an important technique for transgenic plants, where a single gene can be placed in a somatic cell and then this gene will be located in all the plants produced from this cell.

What is somaclonal variation in plants?

Somaclonal variation is defined as genetic variation observed among progeny of plants regenerated from somatic cells cultured in vitro. Although theoretically all plants regenerated from somatic cells should be clones, a number of observations have indicated that this is not the case.

What is micropropagation Slideshare?

 Micro-propagation is the practice of rapidly multiplying stock plant material to produce a large number of progeny plants, using modern plant tissue culture methods.  Widely used for orchids, ferns, many interior foliage plants, etc.

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