“…Landgren et al (1993) studied mitochondrial segregation and rearrangements of regenerated somatic hybrids from seven different species combinations including intrageneric, intergeneric and intertribal combinations, and found among the various species combinations, 43-95% of the hybrids exhibited mtDNA rearrangements. Similar results were recently reported for Solanum (Cardi et al, 1999;Rasmussen et al, 2000), Nicotiana (Donaldson et al, 1995;Raineri et al, 1992), Lycopersicon (Kochevenko et al, 1999(Kochevenko et al, , 2000, Citrus (Motomura et al, 1995;Moriguchi et al, 1997), Brassica (Liu et al, 1995;Walters et al, 1993), for intergeneric fusions such as N. tabacum + Petunia hybrida (Dragoeva et al, 1999), N. tabacum + Hyoscyamus niger (Zubko et al, 2003), Sinapis alba + Brassica juncea (Gaikwad et al, 1996), B. napus + A. thaliana (Yamagishi et al, 2002), Diplotaxis catholica + B. juncea , Oryza sativa + Hordeum vulgare (Kisaka et al 1998), Festuca arundinacea + Lolium multiflorum (Takamizo et al, 1991), Cichorium intybus + Helianthus annuus (Varotto et al, 2001), and for interfamily somatic hybrids between barley and carrot (Kisaka et al, 1997). Moreover, Xu et al, (1993) suggested that in spite of symmetric or asymmetric protoplast fusion, and regardless of fusion methods, the probability of recombination or rearrangement of mitochondrial genomes in somatic hybrids is almost the same.…”