Genetic diversity in tropical maize inbred lines: heterotic group assignment and hybrid performance determined by RFLP markers

被引:60
作者
Benchimol, LL
de Souza, CL
Garcia, AAF
Kono, PMS
Mangolin, CA
Barbosa, AMM
Coelho, ASG
de Souza, AP
机构
[1] Univ Estadual Campinas, Ctr Biol Mol & Engn Genet, BR-13083970 Campinas, SP, Brazil
[2] Univ Estadual Campinas, Inst Biol, Dept Genet & Evolucao, BR-13083970 Campinas, SP, Brazil
[3] Univ Sao Paulo, ESALQ, Dept Genet, BR-13400970 Piracicaba, SP, Brazil
[4] Univ Sao Paulo, ESALQ, Dept Ciencias Exatas, BR-13418900 Piracicaba, SP, Brazil
[5] Univ Fed Goias, Inst Ciencias Biol, Lab Genet Vegetal, BR-74001970 Goiania, Go, Brazil
关键词
Zea mays; RFLP; genetic distance; heterosis; hybrid performance; tropical maize germplasm;
D O I
10.1046/j.1439-0523.2000.00539.x
中图分类号
S3 [农学(农艺学)];
学科分类号
0901 ;
摘要
Tropical maize inbred lines, eight derived from a Thai synthetic population (BR-105) and 10 from a Brazilian composite population (BR-106), were assayed for restriction fragment length polymorphisms with 185 clone-enzyme combinations. The aim of this study was to investigate genetic distances among tropical maize material and their relationship to heterotic group allocation and hybrid performance. Genetic distances (GDs) were on average greater for BR-105 x BR-106 lines (0.77) than for BR-106 x BR-106 (0.71) and for BR-105 x BR-105 (0.69) lines. Cluster analysis resulted in a clear separation of BR-105 and BR-106 populations and was according to pedigree information. Correlations of parental GDs with single crosses and their heterosis for grain yield were high for line crosses from the same heterotic group and low for line combinations from different heterotic groups. Our results suggest that RFLP-based GDs are efficient and reliable to assess and allocate genotypes from tropical maize populations into heterotic groups. However, RFLP-based GDs are not suitable for predicting the performance of line crosses from genetically different heterotic groups.
引用
收藏
页码:491 / 496
页数:6
相关论文
共 34 条
[1]  
Bernardo R, 1996, CROP SCI, V36, P50, DOI [10.2135/cropsci1996.0011183X003600010009x, 10.2135/cropsci1996.0011183X003600040009x, 10.2135/cropsci1996.0011183X003600040007x]
[2]   GENETIC DIVERSITY FOR RFLPS IN EUROPEAN MAIZE INBREDS .3. PERFORMANCE OF CROSSES WITHIN VERSUS BETWEEN HETEROTIC GROUPS FOR GRAIN TRAITS [J].
BOPPENMAIER, J ;
MELCHINGER, AE ;
SEITZ, G ;
GEIGER, HH ;
HERRMANN, RG .
PLANT BREEDING, 1993, 111 (03) :217-226
[3]   GENETIC DIVERSITY FOR RFLPS IN EUROPEAN MAIZE INBREDS .1. RELATION TO PERFORMANCE OF FLINT X DENT CROSSES FOR FORAGE TRAITS [J].
BOPPENMAIER, J ;
MELCHINGER, AE ;
BRUNKLAUSJUNG, E ;
GEIGER, HH ;
HERRMANN, RG .
CROP SCIENCE, 1992, 32 (04) :895-902
[4]   RELATIONSHIP BETWEEN HETEROSIS AND HETEROZYGOSITY AT MARKER LOCI - A THEORETICAL COMPUTATION [J].
CHARCOSSET, A ;
LEFORTBUSON, M ;
GALLAIS, A .
THEORETICAL AND APPLIED GENETICS, 1991, 81 (05) :571-575
[5]   THE EFFECT OF POPULATION-STRUCTURE ON THE RELATIONSHIP BETWEEN HETEROSIS AND HETEROZYGOSITY AT MARKER LOCI [J].
CHARCOSSET, A ;
ESSIOUX, L .
THEORETICAL AND APPLIED GENETICS, 1994, 89 (2-3) :336-343
[6]  
COE E, 1996, MAIZE GENET COOP NEW, V70, P199
[7]   Organization of RFLP diversity among inbred lines of maize representing the most significant heterotic groups [J].
Dubreuil, P ;
Dufour, P ;
Krejci, E ;
Causse, M ;
deVienne, D ;
Gallais, A ;
Charcosset, A .
CROP SCIENCE, 1996, 36 (03) :790-799
[8]   MOLECULAR MARKERS AND GROUPING OF PARENTS IN MAIZE BREEDING PROGRAMS [J].
DUDLEY, JW ;
MAROOF, MAS ;
RUFENER, GK .
CROP SCIENCE, 1991, 31 (03) :718-723
[9]  
GERAGE AC, 1989, 89 IAPAR PR
[10]  
GERAGE AC, 1988, AVALIACAO ESTADUAL C