Somaclonal Variation and Induced Mutations in Crop Improvement

Abstract

Aims and ScopeThe book series is intended for readers ranging from advanced students to senior research scientists and corpomte directors interested in acquiring in-depth, state-of-the-art knowledge about research findings and techniques related to all aspects of agricultural biotechnology. Although the previous volumes in the series dealt with plant science and biotechnology, the aim is now to also include volumes dealing with animals science, food science and rnicrobiology. While the subject matter will relate more particularly to agricultural applications, timely topics in basic science and biotechnology will also be explored. Some volumes will report progress in rapidly advancing disciplines through proceedings of symposia and workshops while others will detail fundamental information of an enduring nature that will be referenced repeatedly.The titles published in this series are listed at the end ofthis volume.

Abnormalities in somatic embryogenesis caused by 2,4-D: an overview

“…SV are known as epigenetic and genetic changes produced in an in vitro propagation program where the resulting plantlets show phenotype and/or genotype variability with regard to the donor plant (Larkin and Scowcroft 1981;Jain et al 1998;Tremblay et al 1999;Krishna et al 2016). Frequency of SV in tissue culture derived plantlets depends on genotype, explant type, culture environment, exogenous PGR, mode of regeneration and culture age (Table 2) (Hitomi et al 1998;Etienne and Bertrand 2003;Rodríguez López et al 2010b;Krishna et al 2016).…”

Cyclic Somatic Embryogenesis in Indonesian Elite Theobroma cacao L. Clones

“…Prolonged secondary embryogenesis with reduced embryogenic potential was previously reported in the Ecuadorian cocoa genotype EET-103 [56] and other plant species such as olive [70], coffee [71], and pine [72]. A decrease or loss of morphogenic potential during prolonged culture can be attributed to several factors including somaclonal variation that causes genetic or epigenetic variation [73]. The dysfunction or loss of regulatory genetic mechanisms controls the regeneration during subculture [74], alteration in gene expression [75], or changes in hormonal balance or sensitivity to exogenous growth substances [39].…”