This is a summary of selected genetic research information (e.g., new factors; mapping; cloning) reported in this News Letter and in recent literature ("r" refers to numbered references in the Recent Maize Publications section). The Symbol Index refers by number to all current published research involving genetic materials; comments on this new aid would be welcome.

BS = Base Sequence; BSH = Broad Sense Heritability; gca, sca = general and specific combining ability; QTL = Quantitative Trait Loci; RM = Restriction Map; unc. = uncovered

* in symbols identifies loci needing allelism tests, documentation, or standardization of the symbol.


Sod4, two cDNAs; BS; mapped near P1 --Cannon & r67; Weber & r674

Kn1-2F11 contains Ds2 insertion, genomic, RM; Kn1-O deletion --Hake & r226

D8, Mpl1 both 3-4 m.u. distal to Adh1 and lw1, between T1-3(5267)(1L.72,3L.73) & T1-3(5242)(1L.90,3L.65) --Harberd & r234

Glb1-0, -L, -I, -S, -V; cDNA, BS --Kriz r326

P1-VV P1-RR*-2 P1-RR*-1 P1-WW-1112: genomic, RM --Lechelt & r349

Adh1-Cm, RM, BS --Osterman & r448

bz2 cDNA, RM --Theres & r627

TB positions, 1S through 1L: NPI109 NPI234 P1 TB-1Sb NPI304 TB-1La NPI40 NPI236 NPI54 NPIPhy1 NPI82 NPI238 --Weber & r674

Mono-1, nulli-1 pollen development --Zhao & r712

PIO200044 - 5 - hm1 - 5 - PIO200644 --Johal & 64:36,37

idd*-2286A, indeterminate dwarf, unc. by TB-1La --Neuffer 64:52


Ht1 near UMC122 --Hoisington & r253

hcf106, Mu1 insert, genomic: RM; on 2 (B. Burr) --Martienssen & r384

B1 probed with r1-nj:1 clone --Robbins & r515

TB positions, 2S through 2L: NPI320 NPI57 B1 TB-3La-2S6270 NPI11 NPISSu2 TB-1Sb-2L4464 NPI123 NPI337 NPI210 --Weber & r674

Tpi2 unc. by TB-1Sb2L4464; fl1 - 15 - v4 - 17 - Tpi2 --Wendel & r677

Mono-2, nulli-2 pollen development --Zhao & r712


a1 & a1-m1Cache rDt element, A1' revertant: RM, BS --Brown & r49

vp1-mum1, -mum2, -mum3, -w1, -w2, -w3; clone, RM --McCarty & r398

TB positions, 3S through 3L: NPIMe1 NPI249 NPI89 NPI219 TB-3Sb TB-3La NPI83 NPI70 NPI90 NPI78 NPI212 TB-3La-2S6270 NPI91 --Weber & r674

Tpi4 not unc. by TB-3Sb, TB-3La, TB-3Lf, TB3-Lg; d1 - 12 - Tpi4 - 11 - Lg3; Pgd2 arm location uncertain --Wendel & r677

Mono-3, nulli-3 pollen development --Zhao & r712

D*-1991, semidwarf, linked with wx1 T3-9c --Neuffer 64:51


Cat3 on 4S --Smith r578

TB positions, 4S through 4L: (NPI77 NPI27 NPI95) TB-4Sa TB-1La-4L4692 NPI250 TB-9Sb-4L6504 NPI208 NPI36 TB-7Lb-4L4698 NPI333 --Weber & r674

Zeins linked with su1, including zein-A1/30.5, -A1/37, -A2/28, -B8/32, -B8/54.5, -B6/36, -B7/17.5, -A2/60, -A3/14, -A3/19, -A3/33, -A3/33.5, -B9/49, -B9/35 --Wilson & r693

orp1 on 4S per TB-4Sa and TB-4Lf ratios in hypos and hypers; orp1 - 1 - su1; BNL15.45 - orp1 - BNL7.20L --Wright & r700, 64:50

Mono-4, nulli-4 pollen development --Zhao & r712

Ms44 (was Ms*-7255), male sterile, Ms44 - 14 - Ms41 Albertsen & 64:52

se1 unc. by TB-1La-4L4692 (Labonte thesis); se1 near BNL15.07 and NPI333 --Bredenkamp & 64:108

c2-m1 Spm, by inverse polymerase chain reaction & RFLPs, maps on 4L --Earp & 64:2

Ts5 - 1 - dek7 - 5 - su1 --Neuffer 64:52

su1 - gl4 - 14 - dek31 --Sheridan 64:64


TB positions, 5S through 5L: NPI409 NPI75 NPI282 NPI233 TB-5Sc TB-5La NPI60 NPI115 NPI237 NPI74 --Weber & r674

NPI346-TPI (was "Tpi5") redesignated Tpi6 (by ed.) --Wendel & r677

Mrh-37962 linked with wx1 T5-9c --Dempsey & 64:31

pr1 - 29 - Dap1 - 15 - v2; pr1 - 6 - v12 - 24 - Dap1 --Stinard & 64:12

D*-2319, semidwarf, linked with wx1 T5-9c; Nl2 (was Rgd2, Rgd*-1445) renamed; Nl2 - 10 - a2 - 3 - bt1 --Neuffer 64:52

b70 protein probe maps near BNL1.380 --Shank & 64:97

sh5 - 17 - v3 - 32 - pr1 --Sprague 64:110


Dehydration-induced protein (17 kDa, dehydrin) (Dhn1, UMC170-DHN, location on 6L), cDNA, BS --Close & r91

Mdm1, Maize dwarf mosaic virus R; UMC85 - 0.4 - Mdm1 - 0.8 - BNL6.29 - 4.9 - Y1 - 2.1 - UMC59 - 36.6 - UMC21; MDMV R linked with Y1 in several lines --McMullen & r400; Scott r558

TB positions, 6S through 6L: (NPI235 NPI245) TB-6Sa TB-6Lc Y1 NPI223 NPI265 TB-6Lb NPI252 NPI280 --Weber & r674

Mono-6, nulli-6 pollen development --Zhao & r712

sbd1 (was wxl*-2292), sunburned, unc. by TB-6L --Neuffer 64:52


Rcm1, rectifier of teosinte-cytoplasm miniature seed/retarded growth; miniature pollen, gametophytic, closely associated; Rcm1-w, weak allele; Rcm1 - 3.3 - vp9 --Allen & r6

o2, BS --DiFonzo & r133; Hartings & r238; Maddaloni & r373

TB positions, 7S through 7L: NPI28 NPI111 TB-7Lb NPI216 NPI112 TB-7Lb-4L4698 NPI283 NPI431 --Weber & r674

o2 - 20 - gl1 - 23 - Tpi1 --Wendel & r677

Zeins linked with T7-9(4363) & y8, including zein-D/55, -B9/22, -B9/10, -B8/38 --Wilson & r693

Mono-7, nulli-7 pollen development --Zhao & r712

BNL8.32 - (b32 probe) - BNL7.61 --Bass & 64:97

Rs4 (was Rs*-1606), rough sheath, 1% recomb. with wx1 T7-9(4363), 14% with wx1 T7-9g --Neuffer 64:51


TB positions, 8S through 8L: NPI114 NPI110 NPI64 NPI37 TB-8La NPIPdk2 --Weber & r674

Tpi3, Mdh1 not unc. by TB-8Lc, Idh1 unc. by TB-8Lc; Tpi3 - 17 - Mdh1 - 18 - Idh1 - 29 - Tpi5; NPI346 locus "Tpi5" on chromosome 5 redesignated Tpi6 by ed. --Wendel & r677

Mono-8, nulli-8 pollen development --Zhao & r712

BNLAct1 - (b32 probe = pro1?) -BNL2.369 --Bass & 64:97

Rf4 - 14 - BNL13.05 - 12 - BNL9.11 --Sisco 64:97


c1 clone homologous sequences: cDNAs Zm1 & Zm38, BS --Marocco & r382

TB positions, 9S through 9L: NPI253 (NPI343 NPI211) sh1 NPI266 (TB-9Sb TB-9Sb-4L6504) (NPI300 BNL3.06) wx1 TB-9Sd NPIPep1 TB-9Lc (BNL5.10 NPI454 NPI416 NPI222 UMC20) BNL7.13 NPI80 NPI293 NPICss2 TB-9La NPI209 NPI97 --Weber & r674

Mono-9, nulli-9 pollen development --Zhao & r712


r1-ch:Hopi recombination analysis negative --Racchi & r503

r1-nj:1 probe --Robbins & r515

TB positions, 10S through 10L: NPI285 NPI105 TB-10Sc TB-10L19 NPI85 TB-10L36 NPI92 NPI350 --Weber & r674

orp2 - 13 - g1; orp2 - 18 - R1; PIO06003 (or PIO06005) and orp2 closely linked --Wright & r700, 64:50

Mono-10, nulli-10 pollen development --Zhao & r712

Seed (S) component of R1, BS --Perrot & r469

Gs4 (was Gs*-1439), green striped, linked with wx1 T9-10b; Gs4 - 23 - R1 --Neuffer 64:51


Rcm2, rectifier (weak) of teosinte-cytoplasm miniature seed/retarded growth; Rcm3, rectifier from Z. diploperennis; Rcm*-X, from Z. luxurians --Allen & r6

mr1*, mr2*, mr3*, etc. (mrv1, etc.) new designations for multi-ranking vs. two-ranking (tr1) in ear; tpe1, thin pericarp; Ma1 (Mal*), multiple aleurone --Galinat r193; 64:120

Glb2-0 --Kriz r326

dsy3, dsy4, desynaptic --Golubovskaya r212

atn1, anaerobic tolerant null --Lemke-Keyes & r354

MYG-1, maternally inherited yellow-green --Mourad & r424

ba3 (was ba*-861059b) barren stalk --Pan & 64:8

Betaine-deficient (stress response), recessive --Rhodes & r512

LT19* and LT-R3*, lysine-threonine R, not allelic --Duncan & 64:110

cif1, cross-incompatible female; cim1 & cim2, cross-incompatible male --Rashid & 64:8

Wi3 (was Wi*-1614), wilted; Rld*-1441 and Rld*-1990, rolled leaf, closely linked or allelic --Neuffer 64:51

Fas1, fascicled ear --Nelson & 64:81

Rf7, partial restorer of cms-Y --Qin & 64:124

gl23 (was gl*-PI262490); gl24 duplicate factor with gl14 --Sprague 64:110



rDt element RM, BS --Brown & r49

tnpA protein of En-1, binding motifs --Gierl & r206

Bs1 RM, BS --Jin & r275; Johns & r278

Mrh, Uq in BSSS population --Peterson r472

Cy & Mu relationship --Schnable & r552

rcy:Mu7 RM, BS --Schnable & r553

Mu4, Mu5 RM, BS --Talbert & r614


Ant-G1, Ant-G2 (Ant1, Ant2), adenine nucleotide translocator (ADP/ATP carrier, mitochondrial), genomic, RM, BS --Bathgate & r21

Signal recognition protein (SRP), 7SL RNA, BS --Campos & r64

Ubiquitin cDNA, BS --Christensen & r87

Autonomously replicating sequences (ARS), genomic, pMARS26 --Eckdahl & r155

Small nuclear RNA (snRNA) U1, U2, U4, U5, U6 forms --Egeland & r158

Zein-pml1, -A1, -20kDaA20, -27kDaA, -4, -10kDa, -15kDa, -19, -7, glutelin, actin: BS --Elliston & r163

Embryo ABA- and water stress-induced cDNA clone pMA12 (Gomez &, Nature 334:262, 1988) --Gomez & r479

Nitrate reductase (NRase, NADH:NRase) & glyceraldehyde-3-phosphate dehydrogenase (GAPDHase), BS --Gowri & r215

axr1, auxin-binding protein (ABP) cDNA, BS --Hesse & r248; Inohara & r266; Tillmann & r630

Pyruvate decarboxylase (PDC) cDNA, BS --Kelley r297

Zein-10kDa genomic: RM, BS --Kirihara & r307

S14 ribosomal protein, 40S subunit (Cry1, S14-40S, Mch1, Mch2), cDNA: RM, BS --Larkin & r338

Pollen-specific cDNA clones: pZmc13, RM, BS, genomic Zmg13; pZmc58 & Zmg58; Zmc26; pZmc46; pZmc26; pZmc30 --Hanson & r232, Mascarenhas r387 r388 r389 r390

Gpc1, Gpc2, Gpc3, glyceraldehyde-3-phosphate dehydrogenase (GAPDHase), cytosolic, genomic, BS --Martinez & r385; Russell & r530

PEPcase, genomic: RM, BS --Hudspeth & r262; Matsuoka & r395

NADP-malate dehydrogenase (NADP-MDH), chloroplastic, cDNA & genomic, BS --Metzler & r404

Zein-19kDa, genomic, pMS1 & pMS2, BS --Quayle & r499

NADP-dependent malic enzyme (NADP-ME; ME), chloroplastic, cDNA, RM, BS --Rothermel & r525

Chlorophyll binding protein (CAB), Cab*-1, RM, BS --Sullivan & r603

Zein-19kDA: BS --Wandelt & r668

Sod3 cDNA, RM, BS; transit peptide deletion analysis --White & r681

Bacteriophage M13 protein III probe hybridizes (hypervariable minisatellites) to 0.56% of genome --Zimmerman & r713


atpF, petB, petD, rpl16, psbB, psbH, atpH, atpI, atpA, atpB, atpE, rbcL gene clusters, splicing --Barkan r17

Z. perennis, luxurians, diploperennis, mays subsp., T. pilosum, T. dactyloides: restriction analysis, introgression --Doebley r136

tRNAval, rRNA16S, tRNAile, tRNAala, rRNA23S restriction analysis --Gauly & r199

petE BS --Haley & r229

atpB, rbcL transcription with insertions & deletions --Hanley-Bowdoin & r231

psbA BS --Zaitlin & r707


T-urf13 deletion mutations, mapping toxin sensitivity & binding of DCCD protectant --Braun & r42 r43

Z. luxurians 22kDa protein, nucleus-regulated --Cooper & r97

cms-T RM, gene sequence, RM; T-urf13 map location --Fauron & r166 r167

tRNAser, tRNApseudo, nad3, rps12, RM, BS --Gualberto & r221

NCS3, RM and BS alterations --Hunt & r263

atp6, T-urf13 initiation and processing sites, BS --Kennell & r298

2.3kb plasmid BS; chloroplastic tRNApro(CAA) & tRNAtrp(UGG) --Leon & r356

rRNA26S, BS --Maloney & r378

NCS5, NCS6 expressions similar; coxII altered in both; expressions of NCS4 --Newton & r435, 64:52

R2-integrated, BS --O'Brien & r443

hsp60, homolog to groEL (E. coli) & hsp60 (S. cerevisiae, T. thermophila) --Prasad & r489

tRNAglu(UUC), tRNAser(UGA), tRNAtyr(GUA), tRNAlys(UUU), tRNAmet(CAU), BS --Sangare & r539, r540, r541

RU, BS --Small & r577

S-atpA1, S-atpA2, S-atpA3, RM --Wang & r673


Salt R --Ashraf & r11; Hajibagheri & r225

Maize Rough Dwarf Virus (MRDV) R --Bar-Tsur & r15

Intra- vs. interpopulation synthetics --Becker & r23

Hybrid improvement by interpopulation crosses, F2xF2 vs. BC1xBC1 --Bernardo & r28

Leaf surface wax variations among lines --Blaker & r32

Flowering, pg11 pg12 --Bosch & r38

Flint-dent introgression; N response --Brun & r52 r53

Betaine levels in lines (stress response) --Brunk & r54

Earworm (Heliothis zea Boddie) R vs. silk pH & silk browning --Byrne & r60

Southern leaf blight (Bipolaris maydis (Nisik.) Shoemaker) race O vs. yield --Byrnes & r61

Variety-cross evaluation toward synthetics --Camussi & r65

S2 vs. S2 random-mated counterparts vs. S8 --Carlone & r68

Tropical germplasm accessions: short- vs. long-day evaluations --Castillo-Gonzalez & r70

R to Bipolaris maydis race T (Bmt*), one or two genes --Ceballos & r71

Inhibitor of Ht2 (Iht*) from B14 --Ceballos & r72

Somatic embryogenesis inheritance --Close & r90; Willman & r692

Prolificacy selection vs. fertility & density --Coors & r98

Vegetative phase vs. filling period selection --Corke & r104

Grain-fill in opaque-2 --Cross & r109

Dry-down rate, diallel --Cross & r111

Selection for yield with international testing; gxe --Crossa & r114

Ear and stalk rot (Fusarium moniliforme Sheldon) R selection --DeLeon & r127

Embryo size heterosis --Djisbar & r135

Chlorosis R selection --Dolstra & r138

Nitrate reductase selection vs. N use efficiency --Eichelberger & r159 r160

Drought R selection --Fischer & r182

European Corn Borer (Ostrinia nubilalis Hubner) R selection, DIMBOA correlated --Grombacher & r220

Selection vs. genetic drift & variance --Helms & r246 r247

Southern leaf blight race O, sources of R --Holley & r255

Fusarium moniliforme R sources --Holley & r256

S2 vs. testcross selection --Horner & r257

Heritability vs. selection effectiveness --Johnson r279

Water stress selection --Johnson & r282

Inbreeding in open-pollinated populations --Kahler & r287

Two-spotted spider mite (Tetranychus urticae K.) R in line 41:2504B --Kamali & r289

European Corn Borer R diallel, gca, sca, reciprocal effects --Khalifa & r301

Maize Streak Virus (MSV) R --Kim & r303

Mg in ear leaf --Kovacevic & r323

Methomyl R & male fertility from tissue culture selection, cms-T --Kuehnle & r328

Pollen competitive ability selection --Landi & r335

Drought tolerance, ABA levels; maternal inheritance --Larque-Saavedra & r340

Somaclonal variations, height, maturity, dry matter --Lazanyi r345

RFLPs, diallel, gca, sca; heterotic groups: yield QTLs on 1, 3, 5, 7, 8 --Lee & r351

Organ-specific proteins, 2D: qualitative co-dominant (62 mesocotyl, 54 sheath, 40 blade), qualitative dominant (2 meso, 7 sh), quantitative co-dominant (42 meso, 50 sh, 16 bl), quantitative dominant (5 meso, 6 sh) --Leonardi & r357

Aluminum tolerance selection --Magnavaca & r374

Quality-protein-maize (QPM), normal-appearing o2 kernels; selection --Magnavaca & r375 r376

Favorable-allele donor identification --Misevic r409 r410

Oil selection, diallel --Misevic & r411 r413

Gene flow among maturity groups in populations --Nevado & r434

European Corn Borer R selection --Nyhus & r440

Index selection response; genetic drift --Odhiambo & r445

Conicalness of ear, BSH --Ordas & r447

Stalk rot (Colletotrichum graminicola (Ces.) Wils R diallel --Pereira & r468

Phytic acid in Illinois High Oil & Illinois High Protein selections --Raboy & r501

Double cross prediction --Reddy & r508

Dwarf vs. normal subpopulations --Rocheford & r517

Goss's bacterial wilt (Clavibacter michiganense ssp. nebraskense) R linkage to wx translocations, chromosome 4 --Rocheford & r518

Growth rate correlation with sucrose-P-synthase level --Rocher & r520

Cold-tolerance selection, chlorosis, chlorophyll fluorescence --Schapendonk & r548

Maize dwarf mosaic virus R linked to Y1 --Scott r558

Slow-rusting (Puccinia polysora Underw.) R --Scott r559

Oil percentage selection --Silvela & r571

Autotetraploid single vs. double crosses; vs. isogenic diploids --Sockness & r582 r583

Barrenness under stress, diallel --Sotchenko r585

Multiplicative selection index, full-sib --Stromberg & r597

Nitrate uptake selection --Teyker & r623

Weevil (Sitophilus zeamais Motschulsky) R diallel, gca, sca --Tipping & r632

Pericarp thickness vs. field emergence selection, sh2 --Tracy & r636

Genetic drift vs. selection --Tragesser & r637

Kernel quality, stalk & root lodging R selection --Verderio & r652

Banded leaf and sheath blight (Rhizoctonia solani) R, gca, sca --Vimla & r654

Fall armyworm (Spodoptera frugiperda J.E. Smith) & Southwestern corn borer (Diatraea grandiosella Dyar) R selection, gca, sca --Williams & r690

Earworm (Heliothis zea Boddie) R in PI sources --Wilson & r694

Favorable-allele estimation by diallel, F2, testcrosses --Zanoni & r708 r709 r710

Low-P tolerance, RFLPs: QTLs on 3, 4, 6mid, 6L Reiter & 64:80

--Assembled unrestricted by Prof. Ligate





Mapping breakpoints of Reciprocal Translocation Stocks:

wxT1-9(8389) [1L.74,9L.13] : The 1L breakpoint for this commonly used translocation stock maps between bz2 and gs1. Data from 350 testcross progeny produced the following approximate recombination distances in centiMorgans:

bz2 - 4 - T - 8 - gs1 - 30 - bm2

T1-9(8389): The 1L breakpoint for the non-waxy version of this stock mapped to the same position.

T1-4g [1L.95,4L.35]: the 1L breakpoint maps distal to bm2. Data from 142 testcross progeny produced the following approximate distances:

bz2 - 22 - gs1 - 3 - bm2 - 7 - T

Note that recombination is reduced around the translocation breakpoint so that map distances are much less than in the standard map.

wxT1-9(035-10) [1L.89,9S.67]: The version of this stock which we got from the Maize Coop showed no linkage to bz2, gs1, or bm2. It may be misidentified as to breakpoint (Earl Patterson, personal communication).

Paul H. Sisco



McMullen and Louie (Mol. Plant Microbe Interactions 2:309-14, 1989) have mapped a major gene for resistance to maize dwarf mosaic virus strain A, Mdm1, to the interval between RFLP markers UMC85 and BNL6.29. Mead et al. in this volume of the newsletter have determined distances between the following probes: NPI7-6.3cM-UMC85-11.6cM-BNL7.28-2.1cM-BNL6.29.

Ed Weck

Please Note: Notes submitted to the Maize Genetics Cooperation Newsletter may be cited only with consent of the authors

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