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Table 2 Species clusters and cytological characteristics

From: Evolution of the apomixis transmitting chromosome in Pennisetum

Group No. in MP Tree Group No in Bayesian Tree Species Name Primary ID MOR Number of chromo-somes observed Number of ASGR 25S rDNA on ASGR-carrier chromosome Opie-2 around ASGR Opie-2 in genome Enzyme treatment (min)/Denature (sec)
I I P. glaucum 23BE S 14 0 - - low 80/70
I I P. purpureum N109 S - - - - - -
I I P. purpureum N168 S - - - - - -
I I P. schweinfurthii PS243 S 14 0 - - high 80/90
I I P. setaceum PS22 A - - - - - -
I I P. setaceum PS25 A 27 1 no no mid 80/90
I I P. squamulatum PS158 A 56 1 no high low Ref. [50]
I I P. squamulatum PS24 A 56 1 no high low 120/90
II II P. alopecuroides PS938 S 18 0 - - low 80/90
II II P. hohenackeri PS156 S - - - - - -
II II P. villosum PS249 A 45 1 no no mid 80/90
III III P. flaccidum PS32 A 36 - - - - -
III III P. flaccidum PS95 A 36 1 no low low 100/90
III III P. orientale PS12 A 54 2 no low low 120/45
III III P. orientale PS13 A - - - - - -
IV IV C. ciliaris B12-9 A 36 1 yes (same arm) high high Ref. [37]
IV IV C. ciliaris Higgins A 36 1 yes (same arm) high high Ref. [37]
IV IV C. ciliaris PS185 A - - - - - -
IV IV C. ciliaris PS186 A - - - - - -
IV IV C. setigerus PS16 A 36 1 yes (same arm) high high 80/90
IV IV P. massaicum PS680 A 35 1 yes (diff arm) no high (on 27/35 chr) 90/50
IV IV P. massaicum PS953 A 35 - - - - -
IV IV P. pedicillatum PS304 A 36 1 no high high 80/90
IV IV P. polystachion PS19 A 54 1 no mid mid 105/70
IV IV P. subangustum PS163 A 54 1 no high high 60/90
V V P. mezianum PS9 A 32 1 no high low 80/90
V V P. nervosum PS187 S 54 0 - - high 100/90
V V P. nervosum PS38 S - - - - - -
none V P. ramosum PS29 S - - - - - -
none V P. ramosum PS63 S 10 0 - - low 80/50
none none P. basedowii PS2 S 54 0 - - low 80/50
  1. Phylogenetic (ndhF) and cytological (ASGR and Opie-2 retrotransposon) analyses of Pennisetum and Cenchrus species.