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Somaclonal Variation and Induced Mutations in Crop Improvement : Current Plant Science and Biotechnology in Agriculture - S. Mohan Jain

Somaclonal Variation and Induced Mutations in Crop Improvement

Current Plant Science and Biotechnology in Agriculture

By: S. Mohan Jain (Editor), D. S. Brar (Editor), B.S. Ahloowalia (Editor)

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Published: 31st May 1998
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Genetic variability is an important parameter for plant breeders in any con­ ventional crop improvement programme. Very often the desired variation is un­ available in the right combination, or simply does not exist at all. However, plant breeders have successfully recombined the desired genes from cultivated crop gerrnplasm and related wild species by sexual hybridization, and have been able to develop new cultivars with desirable agronomie traits, such as high yield, disease, pest, and drought resistance. So far, conventional breeding methods have managed to feed the world's ever-growing population. Continued population growth, no further scope of expanding arable land, soil degradation, environ­ mental pollution and global warrning are causes of concern to plant biologists and planners. Plant breeders are under continuous pressure to improve and develop new cultivars for sustainable food production. However, it takes several years to develop a new cultivar. Therefore, they have to look for new technologies, which could be combined with conventional methods to create more genetic variability, and reduce the time in developing new cultivars, with early-maturity, and improved yield. The first report on induced mutation of a gene by HJ. Muller in 1927 was a major mi1estone in enhancing variation, and also indicated the potential applica­ tions of mutagenesis in plant improvement. Radiation sources, such as X-rays, gamma rays and fast neutrons, and chemical mutagens (e. g. , ethyl methane sulphonate) have been widely used to induce mutations.

Preface
Acknowledgements
Introductionp. 3
Somaclonal variation: mechanism and applications in crop improvementp. 15
Clonal variation in cereals and forage grassesp. 39
Genetic fidelity of plants regenerated from somatic embryos of cerealsp. 65
Somaclonal variation in improving ornamental plantsp. 81
Somaclonal genetics of forest treesp. 105
Gametoclonal variation in crop plantsp. 123
Protoclonal variation in crop improvementp. 135
Chromosomal basis of somaclonal variation in plantsp. 149
Somaclonal variation and in vitro selection for crop improvementp. 169
Somaclonal variation in crop improvementp. 203
Field performance of banana micropropagules and somaclonesp. 219
Somaclonal variation in Solanaceous medicinal plantsp. 233
Induced mutation in plant breeding: current status and future outlookp. 255
In vitro techniques and mutagenesis for the improvement of vegetatively propagated plantsp. 293
Mutation breeding in cereals and legumesp. 311
Induced mutations in ornamental plantsp. 333
In-vitro-induced mutations for disease resistancep. 367
EMS and transposon mutagenesis for the isolation of apomictic mutants in plantsp. 379
Induced mutation in fruit treesp. 401
Induced mutations and somaclonal variation in sugarcanep. 421
Field performance of selected sugarcane (Saccharum spp. hybrids) mutantsp. 447
Molecular basis of heritable tissue culture-induced variation in plantsp. 465
Molecular and biochemical characterization of somaclonal variationp. 485
Recombinase-mediated gene integration in plantsp. 501
T-DNA insertion mutagenesis and the untagged mutantsp. 517
Phenotypic variation between transgenic plants: what is making gene expression unpredictable?p. 539
Transposable elements and genetic variationp. 563
Detection of dwarf somaclones of banana cultivars (Musa) by RAPD markersp. 595
Indexp. 603
Table of Contents provided by Blackwell. All Rights Reserved.

ISBN: 9780792348627
ISBN-10: 0792348621
Series: Current Plant Science and Biotechnology in Agriculture
Audience: Professional
Format: Hardcover
Language: English
Number Of Pages: 620
Published: 31st May 1998
Publisher: SPRINGER VERLAG GMBH
Country of Publication: NL
Dimensions (cm): 23.39 x 15.6  x 3.51
Weight (kg): 1.07