Allelic Distribution of Puroindoline Genes Affecting the Grain Hardness in Some Iranian Bread Wheat Cultivars

Dwarfing genes play an important role in improving yield and adaptability of wheat cultivars in most production environments. Understanding the allelic distribution at dwarfing loci is very important for any wheat-breeding programmes. In this study, we reported the allelic constitution at microsatellite locus Xgwm261 and the two major height-reducing genes Rht-B1 and Rht-D1 among a set of 56 bread wheat cultivars and nine landraces, based on diagnostic polymerase chain reaction assays. With respect to Rht-B1, 37% of the accessions carried the dwarfing allele Rht-B1b, while at Rht-D1, only one accession carried the dwarfing allele Rht-D1b. The allelic state at Rht8 was assayed indirectly by genotyping for the linked microsatellite locus Xgwm261. About 26% of the accessions carried the 192 bp allele (linked with Rht8 gene in some cases), whereas 35 and 12% genotypes carried 165 and 174 bp allele at the microsatellite locus Xgwm261. Cultivars released from 1980 onwards increasingly carried either Rht-B1b or Rht8. This information should allow for a more rational use of this collection for the purpose of wheat improvement in Turkey.

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Identification of Alleles Affecting the Grain Hardness in Different Bread Wheat Cultivars using Molecular Markers

Journal of Crop Breeding ◽

10.29252/jcb.9.21.122 ◽

2017 ◽

Vol 9 (21) ◽

pp. 122-129

Author(s):

Sanaz Norouzdokht Nokhandan ◽

Ali Ezanloo ◽

Mohammad Zabet ◽

Mohammad Ghader Ghaderi

Keyword(s):

Molecular Markers ◽

Bread Wheat ◽

Wheat Cultivars ◽

Grain Hardness

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Nitrogen Metabolism and Yellowberry of Two Bread Wheat Cultivars 1

Crop Science ◽

10.2135/cropsci1983.0011183x002300010007x ◽

1983 ◽

Vol 23 (1) ◽

pp. 20-22 ◽

Cited By ~ 2

Author(s):

James F. Henson ◽

J. Giles Waines

Keyword(s):

Nitrogen Metabolism ◽

Bread Wheat ◽

Wheat Cultivars

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Responses of Some Turkish Wheat Cultivars to Vernalization and Photoperiod

Experimental Agriculture ◽

10.1017/s0014479700015982 ◽

1988 ◽

Vol 24 (2) ◽

pp. 237-245

Author(s):

Serpil Terzioğlu

Keyword(s):

Bread Wheat ◽

Normal Development ◽

Photoperiodic Response ◽

Reliable Information ◽

Floral Initiation ◽

Wheat Cultivars ◽

Primary Shoot ◽

Time Of Year ◽

Short Days

SUMMARYThe vernalization and photoperiodic response of six locally adapted bread wheat cultivars grown under natural daylength conditions during the summer or winter months was examined in glasshouse experiments. The wheat was vernalized by chilling imbibed grains at 2 ± 1°C for 0, 15 or 45 days. Vernalization for 45 days followed by long summer days led to floral initiation in all cultivars within 28 days but vernalization for 0 or 15 days only led to floral initiation in one cultivar. Vernalization followed by long days reduced the time from transplanting to anthesis, resulting in early ear emergence. Vernalization followed by short days accelerated the development of all the cultivars, but normal development could also occur without vernalization at this time of year. Apical differentiation of the primary shoot and its length and development gave the most reliable information on the period of vernalization required.

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Identification of Australian wheat cultivars by laboratory procedures: examination of pure samples of grain

Australian Journal of Experimental Agriculture ◽

10.1071/ea9740796 ◽

1974 ◽

Vol 14 (71) ◽

pp. 796 ◽

Cited By ~ 41

Author(s):

CW Wrigley ◽

KW Shepherd

Keyword(s):

Gel Electrophoresis ◽

Starch Gel Electrophoresis ◽

Wheat Cultivars ◽

Grain Hardness ◽

Additional Information ◽

Size Index ◽

Starch Gel ◽

Australian Wheat ◽

Laboratory Procedures ◽

Single Grain

Three laboratory procedures have been examined for the identification of about fifty wheat cultivars currently grown in Australia. The most discriminating of these methods is starch gel electrophoresis of gliadin proteins extracted from a single grain or from meal. This procedure is capable of identifying many of the cultivars directly. However, in some cases identification is complicated by the observation of more than one biotype for a cultivar on the basis of this test. By comparison, a larger number of grains can be examined by the qualitative phenol test but it is less discriminating. Additional information is provided by applying the test to glumes. Thirdly, quantitative assessment of grain hardness, measuring either particle size index or pearling resistance, gives a division of cultivars into about five groups. Specific results are listed for all methods so that the most suitable procedure can be chosen for distinguishing a particular group of cultivars.

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