Durum wheat as a candidate for the unknown female progenitor of bread wheat:: an empirical study with a highly fertile F1 hybrid with Aegilops tauschii Coss.

被引:101
作者
Matsuoka, Y [1 ]
Nasuda, S
机构
[1] Fukui Prefectural Univ, Matsuoka, Fukui 9101195, Japan
[2] Kyoto Univ, Grad Sch Agr, Lab Plant Genet, Sakyo Ku, Kyoto 6068502, Japan
关键词
D O I
10.1007/s00122-004-1806-6
中图分类号
S3 [农学(农艺学)];
学科分类号
0901 ;
摘要
(H)exaploid bread wheat was derived from a hybrid cross between a cultivated form of tetraploid Triticum wheat (female progenitor) and a wild diploid species, Aegilops tauschii Coss. (male progenitor). This cross produced a fertile triploid F-1 hybrid that set hexaploid seeds. The identity of the female progenitor is unknown, but various cultivated tetraploid Triticum wheats exist today. Genetic and archaeological evidence suggests that durum wheat (T. turgidum ssp. durum) may be the female progenitor. In previous studies, however, F-1 hybrids of durum wheat crossed with Ae. tauschii consistently had low levels of fertility. To establish an empirical basis for the theory of durum wheat being the female progenitor of bread wheat, we crossed a durum wheat cultivar that carries a gene for meiotic restitution with a line of Ae. tauschii. F-1 hybrids were produced without using embryo rescue techniques. These triploid F-1 hybrids were highly fertile and spontaneously set hexaploid F-2 seeds at the average selfed seedset rate of 51.5%. To the best of our knowledge, this is the first example of the production of highly fertile F-1 hybrids between durum wheat and Ae. tauschii. The F-1 and F-2 hybrids are both similar morphologically to bread wheat and have vigorous growth habits. Cytological analyses of F-1 male gametogenesis showed that meiotic restitution is responsible for the high fertility of the triploid F-1 hybrids. The implications of these findings for the origin of bread wheat are discussed.
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页码:1710 / 1717
页数:8
相关论文
共 34 条
[1]   FOCUS: Estimated wheat yields during the emergence of agriculture based on the carbon isotope discrimination of grains: Evidence from a 10th millennium BP site on the Euphrates [J].
Araus, JL ;
Slafer, GA ;
Romagosa, I ;
Molist, M .
JOURNAL OF ARCHAEOLOGICAL SCIENCE, 2001, 28 (04) :341-350
[2]   ROLE OF TRITICUM CARTHLICUM IN ORIGIN OF BREAD WHEAT BASED ON GLIADIN ELECTROPHOREGRAMS [J].
BUSHUK, W ;
KERBER, ER .
CANADIAN JOURNAL OF PLANT SCIENCE, 1978, 58 (04) :1019-1024
[3]  
Dvorak J, 2001, WHEAT TAXONOMY LEGAC, ppp127, DOI DOI 10.1111/J.1365-294X.2012.05550.X
[4]  
Feldman M., 2001, The World Wheat Book: A History of Wheat Breeding, P3
[5]  
FUKUDA K, 1992, JPN J BREED, V42, P255
[6]  
FUKUDA K, 1992, JPN J BREED, V42, P747
[7]  
Hillman G., 1978, Anatolian Studies, V18, P157
[8]   Formation of 2n gametes in durum wheat haploids: Sexual polyploidization [J].
Jauhar, PP .
EUPHYTICA, 2003, 133 (01) :81-94
[9]   Seedset on synthetic haploids of durum wheat: Cytological and molecular investigations [J].
Jauhar, PP ;
Dogramaci-Altuntepe, M ;
Peterson, TS ;
Almouslem, AB .
CROP SCIENCE, 2000, 40 (06) :1742-1749
[10]   What happens to genes in duplicated genomes [J].
Kellogg, EA .
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2003, 100 (08) :4369-4371