scholarly journals Alloplasmic recombinant lines (H. vulgare)-T. aestivum with 1RS.1BL translocation: initial genotypes for production of common wheat varieties

2018 ◽  
Vol 22 (5) ◽  
pp. 544-552 ◽  
Author(s):  
L. A. Pershina ◽  
L. I. Belova ◽  
N. V. Trubacheeva ◽  
T. S. Osadсhaya ◽  
V. K. Shumny ◽  
...  
Keyword(s):  
Common Wheat ◽  
Positive Impact ◽  
Doubled Haploids ◽  
Cultivated Plants ◽  
Federal State ◽  
Male Sterile ◽  
Wheat Varieties ◽  
Alloplasmic Lines ◽  
Maternal Genotype ◽  
Restoration Of Fertility

Alloplasmic lines are formed when the cytoplasm of one species is replaced by the cytoplasm of another as a result of repeated recurrent crosses of wide hybrids with the paternal genotype. Since the cytoplasm replacement results in new intergenomic interactions between a nucleus and cytoplasm leading to variability of plant characteristics, alloplasmic lines with restored fertility can be an additional source of biodiversity of cultivated plants. Earlier, recombinant alloplasmic lines (H. vulgare)-T. aestivumdesignated as L-17(1)–L-17(37) were formed from a plant with partially restored fertility of the BC3 generation of barley-wheat hybridH. vulgare(cv. Nepolegayushchii) ×T. aestivum(cv. Saratovskaya 29). This male-sterile hybrid was consistently backcrossed with wheat varieties Mironovskaya 808 (twice) and Saratovskaya 29, and Mironovskaya 808 had a positive impact on the restoration of fertility. This paper presents the results of investigation into a group of recombinant alloplasmic lines (L-17F4), as well as into doubled haploids (DH) lines – alloplasmic DH-17-lines obtained from anther culture of alloplasmic lines (L-17F2). The most productive of these lines were used as initial breeding genotypes. Hybrid form Lutescens 311/00-22 developed from the crossing of the alloplasmic DH(1)-17 line (as maternal genotype) with euplasmic line Com37 (CIMMYT), the source of the 1RS.1BL wheat-rye translocation, proved to be successful for breeding. The presence of the 1RS.1BL translocation in the genome of the Lutescens 311/00-22 form and the L-311(1)–L-311(6) alloplasmic lines isolated from it did not lead to a decrease of fertility or sterility in the plants. This indicates that the chromosome of the 1BS wheat does not carry the gene(s) that determine the restoration of fertility in the studied (H. vulgare)-T. aestivumalloplasmic lines. Alloplasmic lines L-311(1)–L-311(6) showed their advantage in comparison with the standard varieties for resistance to leaf and stem rust, yield, and grain quality. The breeding tests performed at Omsk Agricultural Scientific Center, Agrocomplex “Kurgansemena”, Federal State Unitary Enterprise “Ishimskoe” (Tyumen Region), using alloplasmic lines L-311(5), L-311(4) and L-311(6) resulted in varieties of spring common wheat Sigma, Uralosibirskaya 2 and Ishimskaya 11, respectively.              

Inheritance of thermo-photoperiod sensitive male sterility in wheat

2006 ◽  
Vol 57 (2) ◽  
pp. 187 ◽  
Author(s):  
Rui-Xing Guo ◽  
Dong-Fa Sun ◽  
Xun-Dong Cheng ◽  
De-Fu Rong ◽  
Chengdao Li
Keyword(s):  
High Temperature ◽  
Low Temperature ◽  
Male Sterility ◽  
Common Wheat ◽  
Hybrid Seed Production ◽  
Male Sterile ◽  
Male Sterile Line ◽  
Wheat Varieties ◽  
Sowing Dates ◽  
Recessive Genes

The fertility of a wheat male sterile line 337S was investigated in 4 consecutive years with 18 different sowing dates. Line 337S showed high sterility under both short daylength/low temperature and long daylength/high temperature during ear development. It has 2 time windows to be used as a male sterile line for hybrid seed production. Its fertility rate can be >50% with suitable sowing time; thus, it can be self-maintained as a male sterile line. Line 337S was reciprocally crossed with 7 common wheat varieties and the fertility of their F1, F2, and BC1 hybrids was investigated at different sowing dates. The results showed that recessive nuclear genes controlled male sterility in 337S and no cytoplasmic effect was observed. All common wheat varieties were able to restore its fertility. The male sterility was controlled by a pair of recessive genes under short daylength/low temperature, but was governed by 2 pairs of recessive genes under long daylength/high temperature. This novel male sterile line provides a new tool for using heterosis in wheat.

scholarly journals Composition of low-molecular-weight glutenin subunits in common wheat (Triticum aestivum L.) and their effects on the rheological properties of dough

2021 ◽  
Vol 16 (1) ◽  
pp. 641-652
Author(s):  
Sławomir Franaszek ◽  
Bolesław Salmanowicz
Keyword(s):  
Molecular Weight ◽  
Rheological Properties ◽  
Common Wheat ◽  
High Performance ◽  
Triticum Aestivum L ◽  
Quality Parameters ◽  
Low Molecular Weight ◽  
Wheat Varieties ◽  
Breeding Lines ◽  
Capillary Zone

Abstract The main purpose of this research was the identification and characterization of low-molecular-weight glutenin subunit (LMW-GS) composition in common wheat and the determination of the effect of these proteins on the rheological properties of dough. The use of capillary zone electrophoresis and reverse-phase high-performance liquid chromatography has made it possible to identify four alleles in the Glu-A3 and Glu-D3 loci and seven alleles in the Glu-B3 locus, encoding LMW-GSs in 70 varieties and breeding lines of wheat tested. To determine the technological quality of dough, analyses were performed at the microscale using a TA.XT Plus Texture Analyzer. Wheat varieties containing the Glu-3 loci scheme (Glu-A3b, Glu-A3f at the Glu-A3 locus; Glu-B3a, Glu-B3b, Glu-B3d, Glu-B3h at the Glu-B3 locus; Glu-D3a, Glu-D3c at the Glu-D3 locus) determined the most beneficial quality parameters.

Whose money matters in public education: A “public” good that parents purchase

2021 ◽  
pp. 147821032110343
Author(s):  
Eunju Kang
Keyword(s):  
Public Schools ◽  
Public Education ◽  
School Districts ◽  
Local Governments ◽  
Positive Impact ◽  
New York State ◽  
Federal State ◽  
Education Funding ◽  
Funding Policy ◽  
State And Local

Instead of asking whether money matters, this paper questions whose money matters in public education. Previous literature on education funding uses an aggregate expenditure per pupil to measure the relationship between education funding and academic performance. Federalism creates mainly three levels of funding sources: federal, state, and local governments. Examining New York State school districts, most equitably funded across school districts among the 50 states, this paper shows that neither federal nor state funds are positively correlated with graduation rates. Only local revenues for school districts indicate a strong positive impact. Parents’ money matters. This finding contributes to a contentious discourse on education funding policy in the governments, courts, and academia with respect to education funding and inequality in American public schools.

Triticum polonicum L. as potential source material for the biofortification of wheat with essential micronutrients

2018 ◽  
Vol 17 (03) ◽  
pp. 213-220 ◽  
Author(s):  
Teresa Bieńkowska ◽  
Elżbieta Suchowilska ◽  
Wolfgang Kandler ◽  
Rudolf Krska ◽  
Marian Wiwart
Keyword(s):  
Durum Wheat ◽  
Common Wheat ◽  
Principal Component ◽  
Small Scale ◽  
Wheat Varieties ◽  
Triticum Polonicum ◽  
Iron And Zinc ◽  
Modern Wheat ◽  
Wheat Lines ◽  
Source Materials

AbstractThe grain of modern wheat cultivars has a significantly lower mineral content, including the content of copper, iron, magnesium, manganese, phosphorous, selenium and zinc. For this reason cereal breeders, are constantly searching for new genetic sources of minerals that are essential in human nutrition. Triticum polonicum, which is grown on a small scale in Spain, southern Italy, Algeria, Ethiopia and warm regions of Asia, deserves special attention in this context. The micronutrient and macronutrient content of T. polonicum versus T. durum and T. aestivum was compared in this study. Polish wheat grain was characterized by the significantly highest content of phosphorus (4.55 g/kg), sulphur (1.82 g/kg), magnesium (1.42 g/kg), zinc (49.5 mg/kg), iron (39.1 mg/kg) and boron (0.56 mg/kg) as well as a low content of aluminium (only 1.04 mg/kg). The macronutrient profile of most T. polonicum lines differed completely from that of common wheat and durum wheat. The principal component analysis supported discrimination of seven Polish wheat lines with a particularly beneficial micronutrient profile (P2, P3, P5, P7, P9, P22 and P25). These lines were characterized by the highest content of copper, iron and zinc, as well as the lowest concentrations of strontium, aluminium and barium which are undesirable in food products. The above lines can be potentially applied as source materials for breeding new wheat varieties. The results of this study indicate that Polish wheat could be used in genetic biofortification of durum wheat and common wheat.

scholarly journals ORGANIZATION OF EDUCATIONAL ACTIVITIES OF VOLUNTEERS AS A SOCIAL AND EDUCATIONAL PROJECT

2019 ◽  
Vol 7 (3) ◽  
pp. 585-589
Author(s):  
Olga I. Vaganova ◽  
Zhanna V. Smirnova ◽  
Natalia V. Kamenez ◽  
Marina N. Bulaeva ◽  
Maxim M. Kutepov
Keyword(s):  
Positive Impact ◽  
Federal State ◽  
Social Design ◽  
Educational Activities ◽  
Volunteer Activity ◽  
Educational Project ◽  
Professional Activities ◽  
State Pedagogical ◽  
Student Volunteers ◽  
State Educational

Purpose of Study: The article is devoted to the study of the organization of educational activities of volunteers as a social and educational project. It is established that the strategic goal of the new generation of Federal-state educational standards is the formation of graduates ' competences. A framework of competence approach helps to gradually transfer the student from learning activities to his future professional activities. In this article, the authors identify the activities of volunteers as one of the ways to adapt students to real working conditions. The article reveals the essence of volunteer activity, which allows to acquire new and improve existing competencies as a social and educational project. In the Nizhny Novgorod State Pedagogical University named after KozmaMinin, the development of volunteer activities proceeds through the work of The center "territory of opportunities", implemented within the framework of the project "Social and educational environment", in which a sufficient number of stakeholders are involved, providing students with the opportunity for further employment. The article also highlights the activities carried out by the Center, for which volunteer students are offered a lot of special courses (social design, robotics, ZD-modeling). On the basis of the revealed facts, the positive effect of volunteer activity for all participants of this process is established. Methodology: The paper presents an analysis of employed student volunteers. As practice shows, students engaged in volunteer activities, quickly enough to get a job in the profession, unlike students who do not have the experience of volunteering. 49% of volunteers work on a permanent or partial basis, while students without volunteer experience employ only one in three students (33%) [Pavlov, Kindaev, Vinnikova, & Kuznetsova, (2016)]. In order to identify the positive impact of this activity on the development of students as professionals, we have shown the activities Of the center "territory of opportunities", which operates in the Nizhny Novgorod state pedagogical University named after KozmaMinin. Results: Results showed ha students engaged in volunteer activities are more satisfied with their leisure time compared to ordinary students. In addition, the study showed that those students who have devoted their time to participate in volunteer activities are employed much faster than students who have not engaged in volunteering. Implications/Applications: The higher education institutions should make every effort to improve the conditions in which volunteer activities are carried out and offer ample opportunities for the development of the student's personality because students can easily employ both in the learning process and after graduating from high school.

scholarly journals Genotypic variability for salt stress tolerance among wild and cultivated wheat germplasms at an early development stage

2019 ◽  
Vol 4 (1) ◽  
pp. 375-380
Author(s):  
Imen Klay ◽  
Leila Riahi ◽  
Hajer Slim Amara ◽  
Abderrazak Daaloul
Keyword(s):  
Salt Stress ◽  
Stress Tolerance ◽  
Common Wheat ◽  
Triticum Turgidum ◽  
Wheat Variety ◽  
Development Stage ◽  
Salt Stress Tolerance ◽  
Wheat Varieties ◽  
The Common ◽  
Photosynthetic Traits

AbstractThis study was conducted to evaluate the variability of salt tolerance potentials among nine wheat genotypes representing wild and cultivated species namely Triticum turgidum subsp. durum, Triticum aestivum and Aegilops geniculata. Ionomic and photosynthetic traits were used for the screening of the studied samples when faced with four salinity levels of NaCl (0, 50, 100 and 150 mM) under green house conditions at the seedling stage. The investigated genotypes exhibited different levels of salt stress tolerance. Ionomic and photosynthetic traits underline the distinctiveness of the common wheat varieties which highlighted particular performances under salt stress conditions and showed higher tolerance potentials among the studied genotypes. Interestingly, the Vaga variety showed more ability to maintain higher K+/Na+ ratios and Pq coefficients compared with the control conditions and stable Fv/F0 and Fv/Fm ratios. Stable behaviour was exhibited by wild Aegilops accessions while durum wheat varieties have been shown to be more sensitive to salt stress. Further investigations were required for the common wheat variety Vaga, which could be useful for successful breeding and biotechnological improvement strategies concerning wheat species.

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