Isozyme variations in Aegilops and Triticum. IV. The origin of the common wheats revealed from the study on esterase isozymes in synthesized hexaploid wheats.

Nakai, Yasuo

doi:10.1266/jjg.54.175

Cited by 61 publications

(33 citation statements)

References 11 publications

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“…The extent of genetic variation found within the populations and species examined in this study is greater than previously reported in Sitopsis species (Johnson, 1972;Nakai, 1979;Brody & Mendlinger, 1980; The Genetical Society of Great Britain, Heredity, 74, 616-627. using seed from only a few plants. The amount of genetic variation found in the Sitopsis species was similar to that found in most other autogamous plant species but the extent of genetic diversity was higher (Nevo et a!., 1979;Hamrick, 1983).…”

Section: Discussioncontrasting

confidence: 59%

The extent and structure of genetic variation in species of the Sitopsis group of Aegilops

Mendlinger

Zohary

1995

Heredity

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The extent and structure of genetic variation in 21 populations covering the five species of the Sitopsis group of Aegilops were investigated by analysis of electrophoretically discernible water soluble leaf proteins. Sixteen loci were examined. All loci were polymorphic across the five species. Over 40 per cent of the alleles were found in all five species and only three rare alleles were speciesspecific. Genetic diversity was high (D = 0.267) with 51 per cent of the total diversity contributed by within-population diversity, 16 per cent by diversity between populations within a species and 33 per cent by diversity between species. Over all 21 populations the mean number of alleles per locus per population was 1.57 and the proportion of polymorphic loci was 0.38. Aegilops speltoides was genetically distant from the other four species, Ae. bicornis, Ae. longissima, Ae. searsii and Ae. sharonensis. Aegilops sharonensis was found to be equally close to Ae. longissima and Ae. bicornis. Aegilops searsii was equally distant from Ae. longissima, Ae. bicornis and Ae. sharonensis.

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Section: Discussioncontrasting

confidence: 59%

The extent and structure of genetic variation in species of the Sitopsis group of Aegilops

Mendlinger

Zohary

1995

Heredity

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“…In addition, based on variation of esterase isozyme, Nakai (1979b) was of opinion that common wheat has arisen in the region of the south-west Caspian belt to Tsanscaucasus.…”

Section: Discussionmentioning

confidence: 99%

Genetic studies on .ALPHA.-amylase isozymes in wheat. III. Intraspecific variation in Aegilops squarrosa and birthplace of hexaploid wheat.

Nishikawa

Furuta

Wada

1980

The Japanese journal of genetics

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“…crassa 4x has been suggested to have its origin in the M genome, while the truncate upper margin of the empty glume can be traced to the D genome of Ae. squarrosa (Kihara 1954;Kihara et al 1965 (Nakai 1979), and that Ae. cylindrica has the D genome found in type 3 squarrosa (Nakai 1981).…”

Section: Introductionmentioning

confidence: 98%

D genome donors for Aegilops crassa (DDMcrMcr, DDD2D2McrMcr) and Ae. vavilovii (DDMcrMcrSpSp) deduced from esterase analysis by isoelectric focusing.

Nakai

1982

The Japanese journal of genetics

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Putative D genome donors to Aegilops crassa (2n = 4x = 28, DDMCrMCr and 2n=6x=42, DDD2D2MCrMcr) and Ae. vavilovii (2n=6x=42, DDMCrMCrSPSP) were studied for esterase isozyme similarities.Esterase isozymes examined by gel isoelectrof ocusing reveal no inter-or intraspecific variation in Ae. crassa and Ae, vavilovii.The putative parents, Ae. squarrosa (2n=2x=14, DD) and Ae, comosa (2n=2x=14, MM), each exhibit three isozyme phenotypes. The natural tetraploid form of Ae. crassa has an isozyme pattern corresponding to a mixture of esterases from type 2 squarrosa and type 1 comosa. We conclude from this that the D genome donor to Ae. crassa 4x is type 2 squarrosa. The hexaploid form of Ae. crassa possesses the same D genome as the tetraploid form, suggesting a duplication of the type 2 squarrosa D genome. Moreover, the D genome of the hexaploid form is the same as the D genome of Triticum aestivum cv. Chinese Spring (bread wheat, 2n=6x=42, AABBDD). It was also found that the putative D genome donor to Ae. vavilovii corresponds to type 2 squarrosa.

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Isozyme variations in Aegilops and Triticum. IV. The origin of the common wheats revealed from the study on esterase isozymes in synthesized hexaploid wheats.

Cited by 61 publications

References 11 publications

The extent and structure of genetic variation in species of the Sitopsis group of Aegilops

The extent and structure of genetic variation in species of the Sitopsis group of Aegilops

Genetic studies on .ALPHA.-amylase isozymes in wheat. III. Intraspecific variation in Aegilops squarrosa and birthplace of hexaploid wheat.

D genome donors for Aegilops crassa (DDMcrMcr, DDD2D2McrMcr) and Ae. vavilovii (DDMcrMcrSpSp) deduced from esterase analysis by isoelectric focusing.

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