Strategies for Enhancement in Food Production Test - 9

Explants is the part of plant which is used for tissue culture. It may contain microbes that may spoil the medium. So, explant is required to be disinfected before placing in culture medium. This is done by Clorax or hypochloride.

Resistance to a virus can be obtained by inoculating a host with gene for viral protein. Antibiotics do not work with virus.

Anther can yield a completely haploid plant because anther is produced by meiosis cell division contain half the number of chromosome their normal cells have.

Plant tissue culture is the technique of in vitro maintaining and growing cells, tissue or organs in nutrient medium. Tissue culture technique was first performed successfully by White in 1932.

Procedure between formation of plantlets in culture and establishment of seedlings in the field is called hardening. Hardening is induced by keeping plantlets under low light intensity and high humidity.

Single cell protein (SCP) is biomass got from microorganisms. Single cell proteins are alternate source of protein in much concentrated form.

Somatic hybrids can be developed by fusing isolated protoplasm from two different varieties of plants which can be further grown to form a new plant. The process is called somatic hybridization.

Micro-propagation is the method of producing thousands of genetically identical plants through tissue culture. In this method explants is kept in nutrient medium in aseptic condition.

Multiple shoots are produced in meristem culture because culture media contains cytokines for overcoming apical dominance.

Greatest benefit of shoot tip (meristem) culture is production of virus free plants. Shoot meristem is free from virus even in infected plants, so, explant used from shoot tip is used to generate virus free plants.