By Aditya Pratap Ph.D., Jitendra Kumar (auth.), Aditya Pratap, Jitendra Kumar (eds.)
Genetic engineering and biotechnology besides traditional breeding have performed a huge position in constructing greater cultivars by way of moving economically vital qualities from far-off, wild or even unrelated species to the cultivated kinds which in a different way couldn't were attainable with traditional breeding. there's a great volume of literature bearing on the genetic development of vegetation over previous couple of a long time. in spite of the fact that, the fantastic effects completed by means of crop scientists in meals legumes’ learn and improvement through the years are scattered in numerous journals of the realm. the 2 volumes within the sequence ‘Alien Gene move in Crop vegetation’ tackle this factor and supply a complete reference at the advancements made in significant foodstuff plants of the realm. those volumes goal at bringing the contributions from globally well known scientists at one platform in a reader-friendly demeanour. the first quantity entitled, ‘Alien Gene move in Crop vegetation: strategies, tools and threat review” will deal completely with the method and technique. The contents of this quantity were designed to appraise the readers with all of the theoretical and sensible facets of large hybridization and gene move like strategies and strategies of gene move, function of biotechnology with particular connection with embryo rescue, genetic transformation, protoplast fusion and molecular marker expertise, difficulties reminiscent of move incompatibility and obstacles to far away hybridization and ideas to beat them. because wild and weedy family members of crop vegetation can have damaging characteristics linked to them, there are consistently chances of linkage drag whereas moving alien alleles. as a result, difficulties and obstacles of alien gene move from those species can be mentioned during this sequence. extra, the linked dangers with this and review of dangers can be given due weightage.
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Extra resources for Alien Gene Transfer in Crop Plants, Volume 1: Innovations, Methods and Risk Assessment
16 A. Pratap and J. Kumar centres of origin. Local farmers play an important role in the maintenance of in situ diversity and conservation (Gepts and Papa 2003). Since the inception of systematic plant breeding efforts, there has been use of limited genetic resources that has led to inadvertent narrowing down of genetic base of most of the crop plants. There are several instances where transgene flow cases have been reported in centres of origin and diversity of crops. One of the most notable examples is of transgene introgression of maize in Mexico (Quist and Chapela 2001, 2002).
Theor Appl Genet 98:164–170 Slatkin M (1987) Gene flow and the graphic structure of natural populations. Science 236: 787–792 Staginnus C, Huettel B, Desel C, Schmidt T, Kahl G (2001) A PCR-based assay to detect En/Spmlike transposon sequences in plants. Chromosome Res 9:591–605 Stalker HT (1980) Utilization of wild species for crop improvement. Adv Agron 33:111–147 Stebbins GL (1958) The inviability, weakness and sterility of hybrids. Adv Genet 9:147–215 Stebbins GL (1959) The role of hybridization in evolution.
Turgidum with Ae. tauschii, other authors described a single-division meiosis (SDM) characterized by a mitosis-like equational division with sister chromatid segregation at anaphase I (Zhang et al. 2007). Both types of divisions, FDR and SDM, may coexist in a same hybrid (Xu and Joppa 2000; Zhang et al. 2007; Silkova et al. 2011; Ressurreição et al. 2012). The divergence in terminology reflects the lack of knowledge regarding the mechanisms for the production of unreduced gametes in amphihaploid genotypes.