List of Some Crop Species, where Desirable and Heritable Variation, Monocotyledons, Dicotyledons, Allium Sativa, Lactuca Sativa

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Tissue Culture, Micropropagation and Somaclonal Variation Tissue Culture, Micropropagation and Somaclonal Variation Introduction Cell and Organ Differentiation Cytodifferentiation Organgenic Differentiation Shoot bud Differentiation Somatic Embryogenesis Clonal Propagation or Micropropagation Bioreactors for Micropropagation and for bioactive Compounds List of Plant Materials,Which can be Propagated by Tissue Culture Synthetic Seeds for Micropropagation Production of Virus free Plants ELISA for Detection of Viruses Fungi Bacteria, MLOs, Mycotoxins and Hormones DAC-ELISA PAC-ELISA Maintenance of Male Sterile Parents for Hybrids through Micropropagation Micropropagation of Hybrid Plants Somaclonal Variation

Home >> Plant Biotechnology and Genomics >>Tissue Culture, Micropropagation and Somaclonal Variation >>List of Some Crop Species, where Desirable and Heritable Variation

List of Some Crop Species, where Desirable and Heritable Variation

Species	Character, which were modified
A. Monocotyledons
1. Allium sativa	Bulb size and shape; clove no.; aerial bulbil
2. Avena sativa	Plant ht.; heading date; awns
3. Hordeum sp.	Plant ht.; tillering
4. Lolium hybrids	Leaf size; flower vigour; survival
5. Oryza sativa	Plant ht; heading date; seed fertility; grain no. & wt.
6. Saccharum officinarum	Diseases (eye spot, Fiji virus, downy mildew, leaf scald)
7. Triticum aestivum	Plant & ear morphology; awns; gliadins; amylase; grain wt., yield
8. Zea mays	T toxin resistance; male fertility; mtDNA
B. Dicotyledons
9. Lactuca sativa	Leaf wt., length. width, flatness and colour
10. Lycopersicon esculentum	Leaf morphology; branching habit; fruit colour; pedicel; male fertility; growth
11. Medicago sativa	Multifoliate leaves; elongated petioles; growth; branch no,; plant ht., dry matter yield
12. Solanum tuberosum	Tuber shape; maturity date; plant morphology; resistance for early & late blight; photoperiod; leaf colour,; vigour; height.; skin colour

For the selection of useful genetic somaclonal variation, two approaches have been followed: (i) Selection is exercised in cells cultured for different periods, which are screened for the desired traits (e.g. for resistance to specific herbicides, fungal toxins, pollutants, extremes of temperatures and salinity), and from these selected cells or cultures, plants are regenerated. (ii) In the second approach, selection is exercised at the phenotypic level in regenerated plants. The former approach of selection at the cellular level has the advantage of screening millions of cells with a relatively little effort and resources. But this method can not be used for traits like flower characters or gain yield. Further, the phenotype expressed by selected cells may not be expressed by regenerated plants. Therefore, the characters for which selection is exercised at single cell level, need to be checked in the regenerated plants.

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List of Some Crop Species where Desirable and Heritable Somaclonal Variation Overcoming Crossing Barriers Using Culture Technques Pre-Fertilization Crossing Barriers on Culture Techniques Post-Fertilization Crossing Barriers Embryo Rescue Embryo Culture Ovule Culture Ovary Culture Other Uses of Tissue Culture Endosperm Culture Nucellus Culture Germplasm Storage Examples of Storage of Plant Tissue Culture Status of Tissue Culture Technology in India Micropropagation Research in India Status of Tissue-Culture Technology in India-Semi Commercial Status of Tissue-Culture Technology in India Commercial Scale Production Somaclonal and Gametoclonal Work in India Secondary Metabolities Research in India

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