I. FOREWORD 1

II. REPORTS FROM COOPERATORS 2

ALBANY, CALIFORNIA and BERKELEY, CALIFORNIA

Mapping of the dominant Fascicled locus and generation of revertants --Jackson, D, Hake, S 2

barren inflorescence2 is required for the formation of branch meristems --McSteen, PCM, Hake, S 2

ifa1 maps to chromosome 1S --Laudencia-Chingcuanco, D, Hake, S 3

AMES, IOWA

Mutator-induced anomalous alleles of the blue fluorescent1 (bf1) locus in maize --Robertson, DS 3

A search for interchromosomal mitotic recombination in maize --Peterson, T 7

barnum, minnesota

A quick way to overview LAMP data --Kutka, FJ 8

barnum, minnesota and big timber, montana

Another look at Mandan maize --Kutka, FJ, Christensen, D 8

beijing, china

Identification of maize inbred lines and validation of genetic relationship among maize inbred lines using RAPD markers --Zhang, CL, Sun, ZL, Jin, DM, Sun, SM, Guo, BT, Wang, B 9

Breeding and genetic analysis on the multiplasmic lines of maize (Zea mays L.). I. Breeding and morphological observations --Zeng, M, Liu, S, Yang, T, Liu, Y, Li, S 10

Breeding and genetic analysis on the multiplasmic lines of maize (Zea mays L.). II.Transmission electron microscope observations on mitochondria --Li, J, Zeng, M, Liu, Y, Li, S 11

Breeding and genetic analysis on the multiplasmic lines in maize (Zea mays L.). III. Electron microscope observations on starch grains in the endosperm of maize seed --Li, J, Zeng, M, Li, S and Liu, Y 13

beijing, china

Discovery and primary study on photoperiod-sensitive male sterility in maize --Zhou, H, Deng, Y, Tian, Z 14

BEIJING, CHINA

Chemical mutagenesis of y1 mutants in corn --Zhao, YL, Song, TM, Ma, HP 15

BERGAMO, ITALY

Chromosome endoreduplication in endosperm cells of IHP and ILP maize strains grown in vitro --Cavallini, A, Bosio, D, Reali, A, Natali, L, Balconi, C, Motto, M 16

Biochemical characterization of “high-lysine” endosperm mutants --Bosio, D, Balconi, C, Motto, M 16

Identification of a putative histone deacetylase RPD3-like gene from maize that complements a yeast rpd3-null mutant --Rossi, V, Hartings, H, Motto, M 17

Comparative analysis of genetic similarity among maize inbred lines detected by RFLPs, RAPDs, SSRs, and AFLPs --Pejic, I, Ajmone-Marsan, P, Morgante, M, Kozumplick, V, Castiglioni, P, Taramino, G, Motto, M 18

Genetic diversity and its relationship to hybrid performance in maize as revealed by RFLP and AFLP markers --Ajmone-Marsan, P, Castiglioni, P, Fusari, F, Kuiper, M, Motto, M 19

Maize transformation with Agrobacterium tumefaciens --Lupotto, E, Reali, A, Passera, S, Chan, M-T 20

BERKELEY, CALIFORNIA

reverse germ orientation 1 mutants make three florets per spikelet --Kaplinsky, NK, Freeling, M 22

Blacksburg, Virginia

DIMBOA-glu concentration in different taxa of teosinte --Shahid, M, Esen, A 23

The difference between two ß-glucosidase allozymes at the amino acid sequence level --Shahid, M, Bandaranayake, H, Esen, A 24

Polymorphism of ß-glucosidase isozymes Glu1 and Glu2 in maize (Zea mays L.) --Shahid, M, Esen, A 24

Campinas, Sao Paulo, BRASIL

Preliminary cytological studies on a maize strain carrying the latent1 supergene --Pierozzi, NI, Miranda, LEC de, Miranda, LT de 25

chestnut hill, massachusetts

Continued studies on the genic stability of the progeny of maize anther culture-derived microspore plants --Ting, YC, Nguyen, DQ 26

COLOGNE, GERMANY

A confocal laser scanning microscopy study of 4 embryo specific mutants --Elster, R, Bommert, P, Werr, W 26

Columbia, Missouri and Athens, Georgia

Functional variants of a maysin QTL - - - Is there a difference? --Lee, EA, Byrne, PF, McMullen, MD, Snook, ME, Coe, EH 27

dniepropetrovsk, ukraine

Effect of metholachlor on pollen germination of different maize genotypes --Satarova, TN 28

Duluth, Minnesota

Isolated meiocyte culture of polymitotic microspores allows direct observation of abnormal cell division --Wolfe, KW, Liu, Q 28

Microfilament distribution in the maize male sterile mutants ms2 and polymitotic --Wolfe, KW, Liu, Q 29

FREIBURG, GERMANY

Isolation of the new necrotic root mutant brt1 --Hochholdinger, F, Feix, G 29

Isolation of the new root mutant slr1 affecting lateral root formation --Hochholdinger, F, Park, WJ, Feix, G 30

Tiller formation in Gaspe Flint is not affected by the rtcs mutation --Hochholdinger, F, Feix, G 30

HAMBURG, GERMANY

Gene expression during fertilization and zygote development --Dresselhaus, T, Cordts, S, Heuer, S, Bantin, J, Lörz, H, Kranz, E 31

Isolation and characterization of genes which are strongly down-regulated after fertilization --Cordts, S, Kranz, E, Brettschneider, R, Lörz, H, Dresselhaus, T 31

Expression analysis of MADS box genes in pollen, egg cells and zygotes --Heuer, S, Lörz, H, Dresselhaus, T 32

IBARAKI, JAPAN

Nitrous oxide (N2O) is effective for chromosome counting in maize --Kato, A 32

IRKUTSK, RUSSIA

Differential redox regulation by glutathione of translation in isolated mitochondria --Konstantinov, YM, Subota, IY, Arziev, AS 33

A leucine motif in the amino acid sequence of mitochondrial ribosomal protein S13: possible involvement in protein oligomerization --Konstantinov, YM, Arziev, AS 33

JOHNSTON, IOWA

Molecular analysis of T0 plants transformed by Agrobacterium and comparison of Agrobacterium-mediated transformation with bombardment transformation in maize --Zhao, ZY,Gu, W, Cai, T, Tagliani, LA, Hondred, D, Bond, D, Krell, S, Rudert, ML, Bruce, WB, Pierce, DA 34

New chromosome 10S male-sterile mutant: ms29 --Trimnell, MR, Fox, TW, Albertsen, MC 37

New chromosome 2L male-sterile mutants ms30 and ms31 --Trimnell, MR, Fox, TW, Albertsen, MC 38

JOHNSTON, IOWA and FORT COLLINS, COLORADO and URBANA, ILLINOIS and GRAND FORKS, NORTH DAKOTA

Two new alleles of the male-sterile mutant ms45 --Trimnell, MR, Bedinger, P, Patterson, E, Sheridan, W, Albertsen, MC 38

Are there too many genes in maize? --Helentjaris, T, Briggs, K 39

Kishinev, Moldova

Experimental mutagenesis of corn --Lysikov, VN 40

Chromosomal abnormalities in maize regenerants in R1 --Kravchenko OA, Lysikov, VN, Palii, AF 43

Dependence of some characters of the maize male gametophyte on gamma radiation and genotype --Kravchenko, OA 44

Possibilities for identifying major genes controlling quantitative traits using maternal haploids of maize --Chalyk, ST, Chebotar, OD, Bylich, VG, Chernomorets, AA 44

A new mutator system? --Krivov, NV 45

Tests for allelism between ys mutants differing in origin --Krivov, NV, Lysikov, VN 45

The upset of meiosis at maize pollination with high dose gamma-irradiated pollen --Romanova, IM 46

On the possible mechanism of 6-mercaptopurine and laser radiation-induced DNA breaks and chromosome aberrations in Z. mays --Burilkov, VK, Paschenko, VM, Lysikov, VN, Basova, IA 46

Lacombe, Alberta, Canada

Xenia assisted reciprocal recurrent selection in maize --Wolfe, RI 47

LLAVALLOL, ARGENTINA

Early waxy and high quality protein maize inbreds: study of fungal diseases --Corcuera, VR, Sandoval, MC 48

Zea mays inbreds resistant to different populations of Ustilago maydis (DC) Corda --Sandoval, MC, Corcuera, VR 49

General combining ability of flint, waxy and dent maize early inbreds --Corcuera, VR, Sandoval, MC, Naranjo, CA 49

Studies to determine the degree of resistance to Ustilago maydis D.C. Corda in wild and cultivated species of the genus Zea --Astiz Gassó, MM, Molina, MdelC 50

The male transmission rate of B-chromosomes is controlled by the A-chromosomes in maize --Chiavarino, AM, Rosato, M, Rosi, P, Poggio, L, Naranjo, CA 52

Nuclear DNA amount and doses of B-chromosomes in native populations of maize --Rosato, M, Chiavarino, AM, Naranjo, CA, Poggio, L 53

Heterochromatic bands and doses of B-chromosomes in native populations of maize --Rosato, M, Chiavarino, AM, Poggio, L, Naranjo, CA 53

Genomic in situ hybridization (GISH) technique for determining the origin of the paired and unpaired chromosomes in the 2n= 30 hybrid Zea perennis x Zea luxurians --Poggio, L, Confalonieri, V, Comas, C, Gonzalez, G, Naranjo, CA 54

Lomas de Zamora, Argentina

Forage aptitude in maize populations --Torrecillas, M, Bertoia, LM 55

london, ontario

The thermal induction of HSP 18 mRNA in Zea mays callus --Friedberg, JN, Yang, Z, Walden, DB 56

The induction of mRNA from 18 kDa HSP genes in maize lateral roots --Yang, Z, Greyson, RI, Bouchard, RA, Walden, DB 56

Nucleolar fusion in different maize cell-types --Maillet, DS, Quinn, CE, Friedberg, JN, Walden, DB 56

MILAN, ITALY

The fused leaves mutant in maize is altered in the embryo and juvenile leaf morphology --Frascarolo, P, Landoni, M, Dolfini, S, Gavazzi, G, Consonni, G 58

Milan, Italy

Maize mutants defective in embryogenesis --Giulini, AP, Busti, E, Consonni, G, Dolfini, AS, Furini, A, MacCabe, AP, Gavazzi, G 58

MOSCOW, RUSSIA and COLUMBIA, MISSOURI

The major quantitative trait loci for plant stature, development and yield are general manifestations of developmental gene clusters --Khavkin, E, Coe, EH 60

NEW HAVEN, CONNECTICUT

Rough sheath2 encodes a MYB-domain protein that negatively regulates meristem-specific KNOTTED1-like homeobox proteins in the leaf --Timmermans, M, Nelson, T 66

midribless1 (mrl1) is required for the correct timing of vascular initiation and the coordination of subsequent developmental events in the maize leaf --Jankovsky, JP, Nelson, T 67

NOVOSIBIRSK, RUSSIA

Perspectives of developing apomixis in maize --Sokolov, VA, Lukina, LA, Khatypova, IV 67

RALEIGH, NORTH CAROLINA

Partial isolation and characterization of the maize alternative oxidase gene --Polidoros, AN, Mylona, PV, Scandalios, JG 68

ST. PAUL, MINNESOTA

Spontaneous activation of transposable elements following an interracial cross in maize --Vladutu, CI, Phillips, RL 70

SAINT PAUL, MINNESOTA and BOLOGNA, ITALY

Bulked segregant analysis confirms the importance of the region near umc89a for days to pollen shed in maize --Tuberosa, R, Salvi, S, Phillips, RL 71

Mapping QTLs for ABA concentration in leaves of a maize cross segregating for anthesis date --Tuberosa, R, Parentoni, S, Kim, TS, Sanguineti, MC, Phillips, RL 72

SARATOV, RUSSIA

Apomixis and endosperm development --Tyrnov, VS 73

Nuclear-plasmic interaction and instability of the maize genome --Zavalishina, AS, Tyrnov, VS 74

SOFIA, BULGARIA

Maize immature embryo culture --Todorova, L, Kruleva, M, Krapchev, B, Nedev, T 76

Taichung, Taiwan

Map position of the centromere on chromosomes 1 and 9 --Lin, B-Y, Chang, S-J 76

Chromosome rearrangements associated with B-A translocations --Lin, B-Y, Chang, S-J 77

Using B-A translocations to isolate AFLPs on the proximal half of chromosome 10 --Cheng, Y-M, Lin, B-Y 77

Two RFLPs included in the r-X1 deletion --Peng, S-F, Lin, B-Y 78

URBANA, ILLINOIS

Variation for ABA concentration in tassels from H99xFR16 and H99xPa91 F4 families --Wassom, JJ, Mei, C, Rocheford, TR, Widholm, JM 78

Urbana, Ilinois

Three-point linkage data for su1 bm3 gl7 on 4S --Stinard, P 79

Results of TB tests of symbolized unplaced mutants --Stinard, P, Jackson, JD 79

Linkage tests of Non-waxy (Waxy1) reciprocal translocations involving chromosome 9 at the MGCSC --Jackson, JD, Stinard, P 79

zb1 and zb2 stocks at the Stock Center are allelic to zb3 --Stinard, P, Sachs, MM 81

Linkage tests of waxy1 marked reciprocal translocations at the MGCSC --Jackson, JD, Stinard, P 81

WALTHAM, MASSACHUSETTS

Supermaize research --Galinat, WC 82

Plant - animal symbiosis --Galinat, WC 83

Maize genetics ten centuries before Mendel, as suggested by Indian art --Galinat, WC 83

WOODWARD, OKLAHOMA

Improvement of anther culture response of apomictic maize-Tripsacum hybrids --Li, YG, Bai, DP, Kindiger, B 84

Plant regeneration from somatic culture of apomictic maize-Tripsacum hybrids --Li, YG, Kindiger, B 84

WOOSTER, OHIO and LONDON, ONTARIO

Quantitation of 18kDa HSP mRNA accumulation in metal-ion insulted maize seedling radicles and plumules --Bouchard, RA, Yang, Z, Walden, DB 85

zhengzhou, china and wuhan, china

Polymorphisms of synthesized populations from Chinese and exotic populations at 17 isozyme loci --Tie, SG, Zheng YL, Liu, JL 86

III. ADDRESS LIST 87

iv. maize genetics cooperation stock center 108

V. MAIZE DATABASE 116

VI. MAIZE PROBE BANK 117

VII. WORKING MAPS 118

VIII. MAIZE GENETICS COOPERATION - 1929 129

IX. SYMBOL INDEX 131

X. AUTHOR INDEX 133


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

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