Gene split models for 109 plant reference genomes based on the latest Gramene release 68 (Gramene68Ensembl110) are given. 

The split gene models are commonly related to annotation artifacts where either a single gene is annotated as two or more genes due to incomplete evidence or the corresponding orthologous genes are fused, but split genes could also result from legitimate evolutionary processes. The Compara Gene Tree method predicts a special class of within-species paralogs called contiguous gene split. 

A contiguous gene split is called when the two apparently paralogous genes lie on the same strand and in close proximity (<1MB) but have no (or little) overlapping sequence.

Here is brief statistics of contiguous gene split models for each species.

system_name	split gene count
actinidia_chinensis	87
aegilops_tauschii	153
amborella_trichopoda	228
ananas_comosus	30
arabidopsis_halleri	40
arabidopsis_lyrata	43
arabidopsis_thaliana	14
arabis_alpina	12
asparagus_officinalis	155
avena_sativa_ot3098	10
avena_sativa_sang	237
beta_vulgaris	14
brachypodium_distachyon	34
brassica_juncea	392
brassica_napus	623
brassica_oleracea	237
brassica_rapa_ro18	59
cajanus_cajan	295
camelina_sativa	361
cannabis_sativa_female	22
capsicum_annuum	267
chara_braunii	37
chenopodium_quinoa	183
chlamydomonas_reinhardtii	26
chondrus_crispus	18
citrullus_lanatus	58
citrus_clementina	339
coffea_canephora	77
corchorus_capsularis	28
corylus_avellana	155
corymbia_citriodora	107
cucumis_melo	126
cucumis_sativus	111
cynara_cardunculus	72
daucus_carota	74
digitaria_exilis	466
dioscorea_rotundata	417
echinochloa_crusgalli	87
eragrostis_curvula	194
eragrostis_tef	268
eucalyptus_grandis	587
eutrema_salsugineum	130
ficus_carica	200
fraxinus_excelsior	123
galdieria_sulphuraria	4
glycine_max	86
gossypium_raimondii	261
helianthus_annuus	647
hordeum_vulgare	121
ipomoea_triloba	115
juglans_regia	119
kalanchoe_fedtschenkoi	60
lactuca_sativa	99
leersia_perrieri	37
lolium_perenne	112
lupinus_angustifolius	40
malus_domestica_golden	273
manihot_esculenta	39
marchantia_polymorpha	10
medicago_truncatula	71
musa_acuminata	109
nicotiana_attenuata	26
nymphaea_colorata	121
olea_europaea	494
oryza_barthii	43
oryza_brachyantha	83
oryza_glaberrima	150
oryza_glumipatula	60
oryza_indica	155
oryza_longistaminata	82
oryza_meridionalis	32
oryza_nivara	52
oryza_punctata	24
oryza_rufipogon	49
oryza_sativa	174
ostreococcus_lucimarinus	2
panicum_hallii	52
papaver_somniferum	83
phaseolus_vulgaris	476
physcomitrium_patens	23
pistacia_vera	50
pisum_sativum	131
populus_trichocarpa	72
prunus_avium	352
prunus_dulcis	200
prunus_persica	26
quercus_lobata	156
quercus_suber	592
rosa_chinensis	599
saccharum_spontaneum	134
secale_cereale	35
selaginella_moellendorffii	48
sesamum_indicum	60
setaria_italica	274
setaria_viridis	70
solanum_lycopersicum	167
solanum_tuberosum	122
sorghum_bicolor	16
theobroma_cacao	37
trifolium_pratense	155
triticum_aestivum	241
triticum_dicoccoides	472
triticum_turgidum	282
triticum_urartu	224
vigna_angularis	89
vigna_radiata	20
vigna_unguiculata	80
vitis_vinifera	195
zea_mays	158