Endemic wheats of China as resources for breeding

2019 ◽  
pp. 11-25
Author(s):  
Hao Fu ◽  
N. P. Goncharov
Keyword(s):  
Sea Level ◽  
Triticum Aestivum L ◽  
Careful Study ◽  
Male Sterile ◽  
Important Place ◽  
Genetic Characteristics ◽  
The People ◽  
Spring Variety ◽  
Northern Border ◽  
Historical Heritage

Aim. To present the wheat endemics of China as source material for breeding and historical heritage. Results and Discussion. Wheat in China is the second most widely distributed cereal crop after rice. It is cultivated in China from the extreme northern border to the southern one, at altitudes from 154 m below sea level to 4450 m above sea level. The Chinian wheat is originated from South-West and West Asia and has a history of more than 2.8 thousand years. Since ancient times, the wheat species have been grown in China: bread (Triticum aestivum L.), compactum (T. compactum Host), polonicum (T. polonicum L.), turgidum (T. turgidum L.), durum (T. durum Desf.), turanian (T. turanicum Jakubz.). The Chinese ancient bread wheats are of interest for breeders because presence among them of early ripening, multi-flowering with the grain number in a spikelet up to 7-8 and in the ear up to 90-100, drought and winter hardy, resistant to powdery mildew and leaf rust; forms with good crossability with rye and Aegilops species. Among the endemic Chinese wheat, an important place belongs to the Chinese Spring variety which played an outstanding role in wheat genetics; super dwarfs Tom Pouce and Tibetan Dwarf; three-grain wheat, in which 3 grains are formed in one flower; Charklyk ancient wheat – a boneless form of polonicum wheat; dwarf blue wheat turgidum – with a strong waxy coating; Taigu-Male-Sterile Wheat – with gene male sterility; a wheats having species and subspecies status: wheat of Petropavlovskyi – Triticum petropavlovskyi Udacz. et Migusch.; Tibetan wheat – T. spelta L. ssp. tibetanum (Shao) N.P. Gontsch comb. nov .; Yunnan wheat – T. spelta L. ssp. yunnanse (King ex S.L. Chen) N.P. Gontsch comb. nov. The origin and genetic characteristics of China's endemic wheats are discussed. Conclusions. China's wheat endemics need careful study and conservation as a reserve of valuable genes and their complexes for breeding, and as an embodiment of the history, culture, talent and work of the people who created them, and an integral part of human cultural heritage.

VARIATION IN PATHOGENICITY BETWEEN ISOLATES OF CLAVICEPS PURPUREA

1977 ◽  
Vol 57 (3) ◽  
pp. 729-733 ◽  
Author(s):  
L. C. DARLINGTON ◽  
D. E. MATHRE ◽  
R. H. JOHNSTON
Keyword(s):  
Great Plains ◽  
Triticum Aestivum L ◽  
The United States ◽  
Northern Great Plains ◽  
Claviceps Purpurea ◽  
Male Sterile ◽  
Hordeum Vulgare L ◽  
Clear Cut ◽  
Weakly Virulent ◽  
Grass Hosts

Isolates of Claviceps purpurea (Fr.) Tul. originally isolated from many different grass hosts in the northern Great Plains and several other areas in the United States and England were tested for their pathogenicity to selected cultivars or lines of male-sterile wheat (Triticum aestivum L.) and barley (Hordeum vulgare L.). While there was a great range in the level of virulence, no clear-cut evidence of specific races was obtained. A few isolates were weakly virulent on two cultivars of male-sterile spring wheat but were highly virulent on the other two cultivars tested. Wheat and barley breeders are advised to use a mixture of isolates in screening germ plasm for resistance to ergot.

Male fertility restoration of wheat in Hordeum chilense cytoplasm is associated with 6HchS chromosome addition

2008 ◽  
Vol 59 (3) ◽  
pp. 206 ◽  
Author(s):  
A. C. Martín ◽  
S. G. Atienza ◽  
M. C. Ramírez ◽  
F. Barro ◽  
A. Martín
Keyword(s):  
Bread Wheat ◽  
Fertility Restoration ◽  
Triticum Aestivum L ◽  
Abnormal Development ◽  
Hordeum Chilense ◽  
Alloplasmic Line ◽  
Male Sterile ◽  
Pollen Abortion ◽  
Reduced Height ◽  
Pollen Stage

We report a new cytoplasmic male sterility (CMS) source in bread wheat (Triticum aestivum L.) designated as msH1. CMS has been identified during the process of obtaining alloplasmic bread wheat in different Hordeum chilense Roem. Schultz. cytoplasms. It was observed that when using the H. chilense H1 accession, the corresponding alloplasmic line was male sterile. This alloplasmic wheat is stable under different environmental conditions and it does not exhibit developmental or floral abnormalities, showing only slightly reduced height and some delay in heading. On examining microsporogenesis in the alloplasmic line, it was found that different stages of meiosis were completed normally, but abnormal development occurred at the uninucleate-pollen stage at the first mitosis, resulting in failure of anther exertion and pollen abortion. Fertility restoration of the CMS phenotype caused by the H. chilense cytoplasm was associated with the addition of chromosome 6HchS from H. chilense accession H1. Thus, some fertility restoration genes appear to be located in this chromosome arm. Considering the features displayed by the msH1 system, we consider that it has a great potential for the development of viable technology for hybrid wheat production.

scholarly journals Genome-wide investigation of heat shock transcription factor family in wheat (Triticum aestivum L.)

2019 ◽  
Author(s):  
Jiali Ye ◽  
Xuetong Yang ◽  
Sha Li ◽  
Wei Li ◽  
Qi Liu ◽  
...  
Keyword(s):  
Heat Shock ◽  
Reference Genome ◽  
Phylogenetic Analyses ◽  
Triticum Aestivum L ◽  
Growth Stages ◽  
Rna Seq ◽  
Male Sterile ◽  
Heat Shock Transcription Factors ◽  
Genome Wide ◽  
Resistance To Heat

Abstract Background: Heat shock transcription factors (HSFs) play crucial roles in resisting heat stress and regulating plant development. Investigating the HSF family is essential for understanding the fertility conversion mechanism in thermo-sensitive male sterile wheat. Previous studies have investigated the HSF family in wheat but it is necessary to conduct more in-depth and systematic analyses based on the newly published reference genome. Results: In the present study, 61 wheat Hsf (TaHsf) genes were identified using two main strategies and renamed based on their physical locations on chromosomes. According to the gene structure and phylogenetic analyses, the 61 TaHsf genes were classified into three categories and eleven subclasses. The genes were unequally distributed on 21 chromosomes, including two pairs of tandem duplication genes and 52 TaHsf segmental duplication genes. According to the cis-elements identified, most of the TaHsfs can be activated by Ca++ and MYB, and they respond to drought, light, copper, and other stresses as well as heat shock. RNA-seq analysis indicated that the A2 class TaHsf genes exhibited persistently upregulated expression levels in the leaves/shoots, roots (except in the vegetative growth and reproductive growth stages), spikes, and grains in wheat under normal conditions. The A and B class TaHsf genes were positively regulated during the resistance to heat, whereas the C class genes were involved in drought regulation in wheat. Only the A and B class TaHsf genes were upregulated under fertile conditions in thermo-sensitive male sterile wheat. Conclusion: In this study, 61 wheat Hsf genes were identified based on the complete wheat reference genome. This comprehensive analysis provides novel insights into the TaHsf genes, including their diverse functions and involvement in metabolic pathways.

scholarly journals Genome-Wide Investigation of Heat Shock Transcription Factor Family in Wheat (Triticum aestivum L.) and Possible Roles in Anther Development

2020 ◽  
Vol 21 (2) ◽  
pp. 608 ◽  
Author(s):  
Jiali Ye ◽  
Xuetong Yang ◽  
Gan Hu ◽  
Qi Liu ◽  
Wei Li ◽  
...  
Keyword(s):  
Heat Shock ◽  
Phylogenetic Analyses ◽  
Expression Patterns ◽  
Heat Shock Protein 90 ◽  
Triticum Aestivum L ◽  
Wheat Breeding ◽  
Anther Development ◽  
Male Sterile ◽  
Specific Expression ◽  
Genome Wide

Heat shock transcription factors (HSFs) play crucial roles in resisting heat stress and regulating plant development. Recently, HSFs have been shown to play roles in anther development. Thus, investigating the HSF family members and identifying their protective roles in anthers are essential for the further development of male sterile wheat breeding. In the present study, 61 wheat HSF genes (TaHsfs) were identified in the whole wheat genome and they are unequally distributed on 21 chromosomes. According to gene structure and phylogenetic analyses, the 61 TaHsfs were classified into three categories and 12 subclasses. Genome-wide duplication was identified as the main source of the expansion of the wheat HSF gene family based on 14 pairs of homeologous triplets, whereas only a very small number of TaHsfs were derived by segmental duplication and tandem duplication. Heat shock protein 90 (HSP90), HSP70, and another class of chaperone protein called htpG were identified as proteins that interact with wheat HSFs. RNA-seq analysis indicated that TaHsfs have obvious period- and tissue-specific expression patterns, and the TaHsfs in classes A and B respond to heat shock, whereas the C class TaHsfs are involved in drought regulation. qRT-PCR identified three TaHsfA2bs with differential expression in sterile and fertile anthers, and they may be candidate genes involved in anther development. This comprehensive analysis provides novel insights into TaHsfs, and it will be useful for understanding the mechanism of plant fertility conversion.

The European Union Never got Rid of Its Internal Controls

2018 ◽  
Vol 20 (1) ◽  
pp. 1-27 ◽  
Author(s):  
Iker Barbero
Keyword(s):  
Police Officers ◽  
Basque Country ◽  
Internal Controls ◽  
Annual Data ◽  
The European Union ◽  
Police Station ◽  
The People ◽  
Northern Border ◽  
Border Town

AbstractThe police station in Irun, a border town between the Spanish and French states, has the highest inter-annual data of arrests of foreigners in irregular situations when compared to other police stations in the Basque Country. This pattern, of which many are unaware, is due to police identity checks in the border surroundings. The place where the border barrier was once, was occupied by a car toll booth constructed with a very particular structure: as a border, with cabins for police officers. In addition, the data for border readmission between these two states, under an agreement signed in 2002, requires special attention: 300,000 people were deported across the Northern border. 70% of the people detained in the French Detention Centre at Hendaia in 2015 were caught at the border. This case study on the Spanish-French border will shed some light on a disregarded topic: internal borders. Regulation in these areas is diverse. Many exceptions and specificities apply, in parallel or alternatively to the ordinary immigration rules, as a matter of exception to the law. In considering this, we need to rethink the image of a borderless Europe as stated by the Schengen agreement. Since the publication of Balibar’s essay ‘What is a border?’ (2005), the controls have multiplied all along the territory as a kaleidoscopic vision. Theeuinternal borders have never disappeared, but have mutated into a police managed model of internal borders.

scholarly journals TRADISI NGUTANG DI PASAR TRADISIONAL (Studi di Pasar Tradisional Gunungpati)

2017 ◽  
Vol 10 (1) ◽  
pp. 1
Author(s):  
Baidhowi Baidhowi
Keyword(s):  
Phenomenological Approach ◽  
Traditional Values ◽  
Important Place ◽  
Traditional Markets ◽  
The People ◽  
Capital Constraints ◽  
Traditional Market ◽  
Personal Approach ◽  
Formal Relationship ◽  
Relationship Of

The traditional market is an important place in the life of the Java community. For society, the market not only as a meeting place for sellers and buyers, but also as a forum for social interaction and representation of traditional values indicated by market actors (traders, buyers and banks thithil / renten). The actors in offering their goods prioritizing personal approach and familial / social networking. Established market atmosphere is not just a formal relationship of buying and selling between sellers and buyers, but more than that, that they greet each other and chat. So for the people shopping at a crowded market and not too clean it into the enjoyment of life of its own. Capital constraints for traders to be one of a phenomenon that is addressed to "ngutang". On the other hand not a few traders in traditional markets by way of its trading strategy are debted. What is interesting how the tradition owe both by traders and buyers as well to whom they debt.This is Qualitative research with phenomenological approach. Collect data with interview techniques. The results showed that the tradition of debt for the traditional market actors Gunungpati done with some motive or model. First group owe a shopper to traders in the market. In this group, in fact the buyer does not merely want to owe. Debt settlement, the traders wait for repayment by the buyer. The second group, the debt carried by traders to moneylenders / bank thithil. Capital constraints often encourage traders to seek additional capital. Their interest in debt to loan sharks, although the excess returns occur because of several motives, among other things, increase business capital, join friends / tempted by the offer attractive, need urgent funds for other purposes. While the model of the solution is the moneylenders who seized merchandise, no patient by giving time. Instead models of debt repayment by merchants a variety of characters, there is the discipline to pay any bank thithil paramedics came. There are “endo”/ evoid with unsold merchandise reason. Finally been booked to trust banks thithil real customers also remedy immediately pay off, not rare bicker.

scholarly journals The Major Factors Causing the Microspore Abortion of Genic Male Sterile Mutant NWMS1 in Wheat (Triticum aestivum L.)

2019 ◽  
Vol 20 (24) ◽  
pp. 6252 ◽  
Author(s):  
Junchang Li ◽  
Jing Zhang ◽  
Huijuan Li ◽  
Hao Niu ◽  
Qiaoqiao Xu ◽  
...  
Keyword(s):  
Triticum Aestivum ◽  
Male Sterility ◽  
Genetic Research ◽  
Triticum Aestivum L ◽  
Anther Development ◽  
Sucrose Metabolism ◽  
Male Sterile ◽  
Pollen Abortion ◽  
Microspore Stage ◽  
Regulation Model

Male sterility is a valuable trait for genetic research and production application of wheat (Triticum aestivum L.). NWMS1, a novel typical genic male sterility mutant, was obtained from Shengnong 1, mutagenized with ethyl methane sulfonate (EMS). Microstructure and ultrastructure observations of the anthers and microspores indicated that the pollen abortion of NWMS1 started at the early uninucleate microspore stage. Pollen grain collapse, plasmolysis, and absent starch grains were the three typical characteristics of the abnormal microspores. The anther transcriptomes of NWMS1 and its wild type Shengnong 1 were compared at the early anther development stage, pollen mother cell meiotic stage, and binucleate microspore stage. Several biological pathways clearly involved in abnormal anther development were identified, including protein processing in endoplasmic reticulum, starch and sucrose metabolism, lipid metabolism, and plant hormone signal transduction. There were 20 key genes involved in the abnormal anther development, screened out by weighted gene co-expression network analysis (WGCNA), including SKP1B, BIP5, KCS11, ADH3, BGLU6, and TIFY10B. The results indicated that the defect in starch and sucrose metabolism was the most important factor causing male sterility in NWMS1. Based on the experimental data, a primary molecular regulation model of abnormal anther and pollen developments in mutant NWMS1 was established. These results laid a solid foundation for further research on the molecular mechanism of wheat male sterility.

scholarly journals Radiocarbon Dating of Mummified Human Remains: Application to a Series of Coptic Mummies from the Louvre Museum

Radiocarbon ◽  
2013 ◽  
Vol 55 (2) ◽  
pp. 345-352 ◽  
Author(s):  
Pascale Richardin ◽  
Magali Coudert ◽  
Nathalie Gandolfo ◽  
Julien Vincent
Keyword(s):  
Radiocarbon Dating ◽  
Hair Sample ◽  
Human Remains ◽  
Scientific Program ◽  
Ams Radiocarbon Dating ◽  
The People ◽  
Hair Samples ◽  
Louvre Museum ◽  
Historical Heritage ◽  
Relationship Of

Many French museums keep in their reserves a great number of mummified human remains. Beyond any ethical or deontological issues, they constitute an important part of our archaeological and historical heritage. Their dating is often inexact and imprecise, but nevertheless this parameter is very interesting, especially if correlated or associated with other analytical or typological data, e.g. the process of mummification. The present study has been carried out in the context of a multidisciplinary scientific program on a set of Coptic mummies found at the site of Antinoe (Egypt), deposited in the Louvre Museum or sent by the state to various other French museums. To minimize the sample size, we have developed a new method for the pretreatment of hair samples before accelerator mass spectrometry (AMS) radiocarbon dating. Thus, we have taken samples from ≃30 mummies, distributed in 8 museums around France, and also from different textiles or plants near or on the bodies. The results and conclusions show the importance of dating mummies in a museum context. For example, 14C dates permit the exclusion of the assumed relationship of a woman with a child. Similarly, a hair sample from the head of a mummy presents a very different 14C date from that of the hair across her chest. The results show that these hairs came from another mummy and were probably placed there intentionally by the people in charge of the collections.

Inheritance of the blue aleurone trait in diverse wheat crosses

Genome ◽  
1990 ◽  
Vol 33 (4) ◽  
pp. 525-529 ◽  
Author(s):  
V. D. Keppenne ◽  
P. S. Baenziger
Keyword(s):  
Triticum Aestivum ◽  
Genetic Marker ◽  
Dominant Gene ◽  
Triticum Aestivum L ◽  
Progeny Testing ◽  
Seed Color ◽  
Male Sterile ◽  
Agropyron Elongatum ◽  
Doubled Haploidy ◽  
Wheat Lines

The blue aleurone trait has been suggested as a useful genetic marker in wheat (Triticum aestivum L.). However, little information is available on its transmission in diverse backgrounds and on its use to identify hybrid seed. UC66049, a hexaploid spring wheat with a spontaneous translocation that included the gene for the blue aleurone trait (Ba) from Agropyron elongatum (Host) P.B. (synonymous with Elytrigia pontica (Podp.) Holub), was crossed to seven wheat cultivars to test the transmission of the trait. UC66049 was crossed to male-sterile red wheat lines to evaluate the blue aleurone trait as a marker for confirming hybridity. Ba segregated as a dominant gene that was transmitted normally through the male and female gametes. For 6 of 7 crosses with diverse pedigrees, we experienced problems with misclassification of the aleurone color in the F2 seed generation, determined by the F3 seed family data. The blue aleurone trait is a good genetic marker; however, progeny testing may be needed to confirm the F2 genotypes in some environments or genetic backgrounds. Moreover, Ba is useful in determining the amount of controlled hybridity as opposed to self-fertility and (or) outcrossing in genetic male-sterile wheat lines. The use of Ba to confirm doubled haploidy was proposed.Key words: Agropyron elongatum, seed color, genetics, Triticum aestivum, Elytrigia pontica.

Incorporation of restoring gene of Aegilops umbellulata into wheat

Genome ◽  
1991 ◽  
Vol 34 (5) ◽  
pp. 727-732 ◽  
Author(s):  
Zheng-Qiang Ma ◽  
Yin-Hai Zhao ◽  
Da-Jun Liu
Keyword(s):  
Chinese Spring ◽  
Fertility Restoration ◽  
Triticum Aestivum L ◽  
Addition Line ◽  
Male Sterile ◽  
Aegilops Umbellulata ◽  
Alien Gene ◽  
Mother Cells ◽  
Type Chromosome ◽  
Heterozygous Translocation

Six 'Chinese Spring' – Aegilops umbellulata Zhuk. addition lines (UAD, UBD, UCD, UDD, UED, and UFM) were assayed for their effects on the fertility of timopheevi cytoplasm male sterile lines (T-type). Chromosome 6U of disomic addition line UAD was found to be able to restore the fertility of T-type male sterility and 'Chinese Spring' was verified to lack restoring genes, indicating that 6U carries at least one fertility restoration gene. From about 200 plants with 42 somatic chromosomes derived from the progeny of crosses Qu Xian Early A × UAD and Sumai No. 3 A × UAD, eight self-fertile plants were selected. Their self-fertility in timopheevi cytoplasm implies that they carry the restoring gene(s) from 6U. Cytological analysis was conducted on the hybrid F1 of the selected fertile plants (040-5, 060-1, and 061-4) as female parents crossed with 'Chinese Spring'. The self-fertility segregation and the chromosome pairing of pollen mother cells of F1 fertile plants from 040-5, 060-1, and 061-4 × 'Chinese Spring' during meiosis suggested that they were heterozygous translocation lines with restoring gene(s) from 6U.Key words: Aegilops umbellulata Zhuk., restoring genes, alien gene transfer, timopheevi cytoplasmic male sterile fertility, Triticum aestivum L.

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