159Maestra B, Naranjo T (1997) Homoeologous relationships of Triticum sharonense chromosomes
to T. aestivum. Theor Appl Genet 94:657–663
Maestra B, Naranjo T (1998) Homoeologous relationships of Aegilops speltoides chromosomes to
bread wheat. Theor Appl Genet 97:181–186
Maestra M, de Jong JH, Shepherd KW, Naranjo T (2002) Chromosome arrangement and behav-
iour of two rye homologous telosomes at the onset of meiosis in disomic wheat-5RL addition
lines with and without the Ph1 locus. Chromosome Res 10:655–667
Marais GF, Bekker TA, Eksteen A, McCallum B, Fetch T, Marais AS (2010) Attempts to remove
gametocidal genes co-transferred to common wheat with rust resistance from Aegilops speltoi-
des. Euphytica 171:71–85
Marcussen T, Sandve SR, Heier L, Spannagle M, Pfeifer M, IWGSC, Jakobsen KS, Wulff BBH,
Steuernagel B, Mayer KFX, Olsen OA (2014) Ancient hybridizations among the ancestral
genomes of bread wheat. Science 345:1250092
Martín AC, Shaw P, Phillips D, Reader S, Moore G (2014) Licensing MLH1 sites for crossover
during meiosis. Nat Commun 5:4580. doi: 10.1038/ncomms5580
Martínez M, Cuñado N, Carcelén N, Romero C (2001a) The Ph1 and Ph2 loci play different roles
in the synaptic behaviour of hexaploid wheat Triticum aestivum. Theor Appl Genet
103:398–405
Martínez M, Naranjo T, Cuadrado C, Romero C (2001b) The synaptic behaviour of Triticum tur-
gidum with variable doses of the Ph1 locus. Theor Appl Genet 102:751–758
Martinez M, Cuadrado C, Laurie DA, Romero C (2005) Synaptic behaviour of hexaploid wheat
haploids with different effectiveness of the diploidizing mechanism. Cytogenet Genome Res
109:210–214. doi: 10.1159/000082402
Martínez-Pérez E, Shaw P, Reader S, Aragón-Alcaide L, Miller T, Moore G (1999) Homologous
chromosome pairing in wheat. J Cell Sci 112:1761–1769
Martínez-Pérez E, Shaw P, Moore G (2001) The Ph1 locus is needed to ensure specifi c somatic and
meiotic centromere association. Nature 411:204–207
Martínez-Pérez E, Shaw P, Aragón-Alcaide L, Moore G (2003) Chromosomes form into seven
groups in hexaploid and tetraploid wheat as a prelude of meiosis. Plant J 36:21–29
McGuire PE, Dvořák J (1982) Genetic regulation of heterogenetic chromosome pairing in poly-
ploid species of the genus Triticum sensu lato. Can J Genet Cytol 24:57–82
Mello-Sampayo T (1971a) Genetic regulation of meiotic chromosome pairing by chromosome 3D
of Triticum aestivum. Nat New Biol 230:22–23
Mello-Sampayo T (1971b) Promotion of homoeologous pairing in hybrids of Triticum aesti-
vum × Aegilops longissima. Genet Iber 23:1–9
Mello-Sampayo T, Canas AP (1973) Suppressors of meiotic chromosome pairing in common
wheat. In: Sears ER, Sears LMS (eds) Proc 4th Int Wheat Genet Symp. University of Missouri,
Columbia, MO, pp 675–684
Mikhailova EI, Naranjo T, Shepherd K, Wennekes-van Eden J, Heyting C, de Jong JH (1998) The
effect of the wheat Ph1 locus on chromatin organisation and meiotic chromosome pairing
analysed by genome painting. Chromosoma 107:339–350
Mochizuki A (1964) Further studies on the effect of accessory chromosomes on chromosome pair-
ing in Aegilops mutica. Jpn J Genet 39:356–362
Morais L, Queiroz A, Viegas W, Roca A, Naranjo T (1992) Synaptonemal complex formation and
metaphase I bond distribution at low temperature in nullisomic 5D-tetrasomic 5B hexaploid
wheat. Genome 35:498–502
Motsny II, Simonenko VK (1996) The infl uence of Elymus sibiricus L. genome on the diploidiza-
tion system of wheat. Euphytica 91:189–193
Mursal IEJ, Endrizzi JE (1976) A reexamination of diploid-like meiotic behaviour of polyploid
cotton. Theor Appl Genet 47:171–178
Naranjo T (1992) The use of homoeologous pairing in the identifi cation of homoeologous relation-
ships in Triticeae. Hereditas 116:219–223
6 The Mode and Regulation of Chromosome Pairing...