Some aspects of cross-pollination in wheat (Triticum aestivum L.). 3. Anther length and number of pollen grains per anther

Euphytica ◽  
1974 ◽  
Vol 23 (1) ◽  
pp. 11-19 ◽  
Author(s):  
A. Ph. De Vries
Keyword(s):  
Triticum Aestivum ◽  
Pollen Grains ◽  
Triticum Aestivum L ◽  
Cross Pollination ◽  
Anther Length

POLLEN PRODUCTION AND DISSEMINATING PROPERTIES OF TRITICALE RELATIVE TO WHEAT

1972 ◽  
Vol 52 (4) ◽  
pp. 569-574 ◽  
Author(s):  
K. C. YEUNG ◽  
E. N. LARTER
Keyword(s):  
Seed Set ◽  
Marker Gene ◽  
Pollen Grains ◽  
Triticum Aestivum L ◽  
Hybrid Seed Production ◽  
Pollen Production ◽  
Hexaploid Triticale ◽  
Anther Length ◽  
Anther Extrusion ◽  
Wide Range

A study of the pollen production properties of three hexaploid triticale strains (Triticale hexaploide Lart.) showed that their anther length was significantly greater than that of wheat anthers (Triticum aestivum L. em Thell.) and the estimated number of pollen grains per anther ranged from 15,000 to 21,000. In comparison, a total of 8000 grains per anther was estimated for wheat, cult Manitou. Eighty-nine percent anther extrusion occurred in triticale cult Rosner, while Manitou averaged 70% anther extrusion. The period of anthesis of triticale varied according to strain but generally was of longer duration than in Manitou and thereby promoted outcrossing. Using a triticale strain carrying a dominant marker gene, 50% seed-set was obtained at a distance of 12 m leeward of the pollen source; however, a small percentage was still obtained at a distance of 30 m. It would appear from the limited number of triticales used in this study that a wide range of variability exists within this species in its pollen production and disseminating properties. With appropriate selection pressures, strains with an outbreeding habit could be developed for the purpose of hybrid seed production.

scholarly journals Genome-wide association study for anther length in some elite bread wheat germplasm

2018 ◽  
Vol 54 (No. 3) ◽  
pp. 109-114 ◽  
Author(s):  
Song Xiaopeng ◽  
Feng Jie ◽  
Cui Zixia ◽  
Zhang Chuanliang ◽  
Sun Daojie
Keyword(s):  
Association Study ◽  
Bread Wheat ◽  
Genome Wide Association Study ◽  
Snp Array ◽  
Pollen Grains ◽  
Triticum Aestivum L ◽  
Genome Wide Association ◽  
Genome Wide ◽  
Anther Length ◽  
A Genome

The anther is a crucial organ for the development of the spike in bread wheat (Triticum aestivum L.). Long anthers contain large amounts of pollen grains; thus, they are favourable for cross-pollination and increase resilience against adverse environmental conditions. We conducted a genome-wide association study (GWAS) of anther length in 305 elite wheat lines evaluated during 2013–2015 in two locations and two growing seasons. The mapping panel was genotyped using a high-density Illumina iSelect 90K single nucleotide polymorphism (SNP) array. The GWAS used 18763 SNPs and identified 17 markers associated with anther length in wheat. The loci were mainly distributed across the chromosomes 3A, 3B and 7B. Further studies are required to determine if these are candidate genomic regions of anther length. In addition, anther length had high heritability, and positive correlations between anther length and grain weight per spike were observed.  

scholarly journals Pollen grains cytology of wheat Triticum aestivum L.

CYTOLOGIA ◽  
1978 ◽  
Vol 43 (3/4) ◽  
pp. 601-604
Author(s):  
Azhar K. Hamdi ◽  
Atef S. Soliman
Keyword(s):  
Triticum Aestivum ◽  
Pollen Grains ◽  
Triticum Aestivum L

scholarly journals Cross-pollination in wheat Triticum aestivum L. and its wild relative Aegilops biuncialis Vis.

1970 ◽  
Vol 21 ◽  
pp. 143-147
Author(s):  
N. O. Kozub ◽  
I. O. Sozinov ◽  
H. Ya. Bidnyk ◽  
N. O. Demianova ◽  
Ya. B. Blume ◽  
...  
Keyword(s):  
Triticum Aestivum ◽  
Storage Proteins ◽  
Natural Populations ◽  
Triticum Aestivum L ◽  
Growth Conditions ◽  
Wild Relative ◽  
Cross Pollination ◽  
Low Humidity ◽  
Gli 1 ◽  
Single Seeds

Aim. The aim of the study was analysis of outcrossing indices in Triticum aestivum L. plants depending on growth conditions and in natural populations of its wild relative Aegilops biuncialis Vis. using storage proteins as genetic markers. Methods. SDS and APAG electrophoresis was used to identify genotypes at the Glu-1 and Gli-1 loci for single seeds from F2 plants of T. aestivum and in samples from natural populations of Ae. biuncialis. Results. In T. aestivum, significant differences in the frequency of cross-pollination were revealed, from 0.3 to 11 % depending on year’s conditions and the dose of the 1BL/1RS translocation. The high outcrossing rate was observed under low humidity and the absence of precipitations. The frequency of cross-pollination is, on average, 2.3 % in T. aestivum and 4.38 % in Ae. biuncialis. Conclusions. Differences in outcrossing indices between genotypes with different doses of 1BL/1RS are realized only in certain conditions: drought at moderate temperatures favors cross-pollination. The rate of outcrossing is similar in T. aestivum and Ae. biuncialis.Keywords: cross-pollination, Triticum aestivum L., Aegilops biuncialis Vis, storage proteins.

scholarly journals Anatomical and morphological copper provision indexes in wheat (Triticum aestivum L.)

2013 ◽  
Vol 46 (1) ◽  
pp. 83-97
Author(s):  
Elżbieta Weryszko-Chmielewska
Keyword(s):  
Triticum Aestivum ◽  
Copper Deficiency ◽  
Field Experiments ◽  
Pollen Grains ◽  
Triticum Aestivum L ◽  
Vascular Bundles ◽  
Peripheral Tissues ◽  
Culm Wall ◽  
Wheat Development ◽  
Early Phases

The morphology and anatomy of wheat (<i>Triticum aestivum</i> L.) stems under conditions of copper deficiency were investigated. Copper was supplied at 0, 5 and 125 mg per Mitscherlich pot. The lignification of tissues in plants from field experiments (0; 5; 10; 20 mg Cu/ha) was also studied. Significant changes in stem and leaf morphology and anatomy were found along inhibition of inflorescence and flower development. The anthers produces sterile and deformed pollen grains. The diminished stability of stems was caused by the following anatomical changes: considerable reduction of steam diameter and culm wall thickness and decreased numbers and dimensions of sclerenchyma and parenchyma cells and layers. In addition, the size of vascular bundles and the diameter of xylem vessels were decreased and the sclerenchyma sheath around the vascular bundles was reduced. The epidermis and sclerenchyma cells had thinner walls. The absence of lignification of cells walls was observed most frequently in the peripheral tissues (epidermis, sclerenchyma and parenchyma). It was demonstrated that it was possible to histochemically determine the degree of stem lignification in the early phases of wheat development.

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