Somaclonal Variation: Molecular Analysis, Transformation Interaction, and Utilization

Veilleux, Richard E.; Johnson, Alexander

doi:10.1002/9780470650110.ch6

Cited by 30 publications

(20 citation statements)

References 153 publications

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“…Kiselev). Johnson, 1989;Dahleen et al, 1991;Duncan et al, 1997;Bregitzer et al, 1998;Veilleux and Johnson, 1998). The mechanisms producing both somatically and meiotically heritable variations can contribute to the decline in the vigor and regenerability of cultures over time (Kaeppler et al, 2000).…”

Section: Introductionmentioning

confidence: 99%

Mutation of Panax ginseng genes during long-term cultivation of ginseng cell cultures

Kiselev

Shumakova

Tchernoded

2011

Journal of Plant Physiology

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Section: Introductionmentioning

confidence: 99%

Mutation of Panax ginseng genes during long-term cultivation of ginseng cell cultures

Kiselev

Shumakova

Tchernoded

2011

Journal of Plant Physiology

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“…Point mutations, chromosomal rearrangements, recombination, DNA methylation, altered sequence copy number, and transposable elements are believed to be the basis of somaclonal variation (Kang et al, 2007). Several factors, such as genotype age of donor plants, type of explants, and age of culture, are reported to contribute toward this effect (Veilleaux and Johnson, 1998;Jain, 2001). Somaclonal variation mimics induced mutations and can be induced in both asexually propagated plants.…”

Section: Tissue Culture In Cassava Breedingmentioning

confidence: 99%

Cassava Genetic Improvement

Ceballos¹,

Fregene²,

Carlos³

et al. 2007

Breeding Major Food Staples

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PREFACEThis Handbook is the result of a combined effort by several current and previous cassava researchers at CIAT to review and summarize the most important results of cassava research during the past 40 years. Most of the chapters are based on the various presentations during the Regional Cassava Training Course, held in Thailand from October 6 to 17, 2008. This course was organized upon the realization that many people that were actively involved with cassava research in the 1970s and 80s, both at CIAT and in national programs, have now retired or will soon do so, and that a whole new generation of cassava researchers are currently being hired to take their place.As cassava is now becoming a very important, and mostly industrial, crop in Asia, there are many new opportunities, but also a host of new problems and challenges. These include the appearance in Asia of new cassava diseases and pests; the decreasing availability and increasing cost of rural labor, resulting in the need for partial or complete mechanization of cassava production; the rapidly increasing demand for cassava roots for production of food, feed and fuel, and the unavailability in many countries of new land for any expansion of cassava area, thus requiring a rapid increase in cassava yields to increase supplies. This requires a renewed focus on cassava research for the development of new higher-yielding varieties and more sustainable production practices.While many cassava researchers in national programs in Asia received individual or group training at CIAT-Colombia during the 1970s and 80s, this training was greatly reduced during the following two decades due to funding limitations. Thus, the objective of the Regional Cassava Training Course in 2008 was to provide a new training opportunity for young scientists in Asian countries, and to hand over the knowledge and experience of the older cassava researchers, mostly from CIAT, to a new generation that will have to face the new challenges. Thus, the course was taught mostly by current or already retired CIAT cassava researchers, while the 60-plus participants of the course included cassava researchers from Cambodia, China, East Timor, India, Indonesia, Lao PDR, Malaysia, Myanmar, the Philippines, Thailand and Vietnam. The training course not only provided knowledge -from physiology and biotechnology to animal feeding and production of fuelethanol -but also an opportunity for people from different institutions and countries to get to know each other, which will greatly facilitate future collaboration.Course participants returned home with a CD containing the PowerPoint presentations of the course. However, it was felt that a more comprehensive review of all the topics covered was warranted, as this would provide more in-depth knowledge for those working in the various specialized fields. Most of this information is available in many refereed journals, in workshop proceedings and old CIAT annual reports, but many of these are now out of print or otherwise difficult to obtain. Thus, the Cas...

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“…These discrepancies relate to the complexity of the plant genome, and the markers that are normally used often cannot give a complete view [88]. To resolve this difficulty, assay at the molecular level should be examined in relation to morphological changes.…”

Section: Molecular Markersmentioning

confidence: 99%