scholarly journals Elazığ İli Karakoçan İlçesi Başyurt Köyü Merasının Botanik Kompozisyonu ile Mera Durumu ve Sağlığının Belirlenmesi

2021 ◽  
Vol 5 (3) ◽  
pp. 690-696
Author(s):  
Erdal ÇAÇAN ◽  
Şerafettin KORTAK
Keyword(s):  
Hordeum Bulbosum

Bu çalışma Elazığ ili Karakoçan ilçesi, Başyurt köyü merasının botanik kompozisyonu ile mera durumu ve sağlığının belirlenmesi amacıyla yürütülmüştür. Mera alanında 15 familyaya ait 41 bitki türünün tespiti yapılmış olup, bitki ile kaplı alan oranı %76.9, botanik kompozisyonda baklagillerin, buğdaygillerin ve diğer familya bitkilerinin oranları sırasıyla %0.9, %35.5 ve %63.6 olarak belirlenmiştir. Merada baskın türlerin Gundelia tournefortii (%19.62), Hordeum bulbosum (%18.28) ve Eremopoa persica (%13.29) olduğu tespit edilmiştir. Mera durumu “zayıf“ olarak belirlenmiştir. Merada bulunan bitkilerin büyük çoğunluğunun istilacı nitelikte olması, botanik kompozisyonda baklagil oranının düşük olması ve mera durumunun zayıf olarak belirlenmesi mera alanının ıslaha ihtiyacı olduğu sonucunu doğurmuştur. Merada münavebeli otlatma sistemine geçilmesi, meranın gübrelenmesi ve mera üzerindeki baskının azaltılması amacıyla meradan yararlanan köy sakinleri, yem bitkileri yetiştiriciliği üretimine teşvik edilmelidir.

Inheritance of Seed Set in Crosses of Spring Barley and Hordeum bulbosum L

Crop Science ◽  
1992 ◽  
Vol 32 (1) ◽  
pp. 269-271 ◽  
Author(s):  
P. Devaux ◽  
T. Adamski ◽  
M. Surma
Keyword(s):  
Seed Set ◽  
Spring Barley ◽  
Hordeum Bulbosum

scholarly journals Importance of the Secondary Genepool in Barley Genetics and Breeding. I. Cytogenetics and Molecular Analysis

2011 ◽  
Vol 40 (No. 3) ◽  
pp. 73-78 ◽  
Author(s):  
R. Pickering ◽  
A. Johnston P ◽  
B. Ruge
Keyword(s):  
Hordeum Vulgare ◽  
Plant Breeding ◽  
Molecular Analysis ◽  
Hordeum Bulbosum ◽  
Hordeum Vulgare L ◽  
Cultivated Barley

There have been no plant breeding developments using species from the tertiary genepool of cultivated barley for breeding or genetics since the VIII<sup>th</sup> International Barley Genetics Symposium in 2000. Hence, the first part of this review describes progress since 2000 in developing and characterising recombinant lines derived from hybridisations between the sole species in the secondary genepool, Hordeum bulbosum L., and cultivated barley, Hordeum vulgare L. The topics discussed in part I are cytogenetics and molecular analysis of recombinant lines. &nbsp;

The transfer of a gene conferring resistance to scald (Rhynchosporium secalis) from Hordeum bulbosum into H. vulgare chromosome 4HS

2006 ◽  
Vol 125 (6) ◽  
pp. 576-579 ◽  
Author(s):  
R. Pickering ◽  
B. Ruge-Wehling ◽  
P. A. Johnston ◽  
G. Schweizer ◽  
P. Ackermann ◽  
...  
Keyword(s):  
Rhynchosporium Secalis ◽  
Hordeum Bulbosum

The Effect of Homoeologous Meiotic Pairing in Tetraploid Hordeum bulbosum L. × H. vulgare L. Hybrids on Alien Introgressions in Offspring

2016 ◽  
Vol 150 (2) ◽  
pp. 139-149 ◽  
Author(s):  
Margret Scholz ◽  
Galina Pendinen
Keyword(s):  
Interspecific Hybrids ◽  
In Situ Hybridisation ◽  
Basic Material ◽  
Meiotic Pairing ◽  
Hordeum Bulbosum ◽  
Homoeologous Pairing ◽  
Introgression Breeding ◽  
The Individual ◽  
Pairing Behaviour

The pairing behaviour of the individual chromosome arms of Hordeum vulgare (Hv) with their homoeologous arms of H. bulbosum (Hb) at metaphase I of meiosis in tetraploid Hb × Hv hybrids and the frequencies of recombined Hv chromosome arms in selfed offspring were studied on differentially visualized chromosomes after fluorescent in situ hybridisation. The frequencies of paired Hv-Hb arms in the F2 and F3 hybrids were correlated with the frequencies of recombined Hv chromosomes in progenies. Self-generation of hybrids, the number of Hv and Hb chromosomes, and the number of recombined Hv chromosomes of the hybrids strongly influenced the Hv-Hb pairing frequency in meiosis. Within the offspring of F2 and F3 hybrids both Hv plants and hybrids were detected. In contrast, all progenies of the F4 hybrid were hybrids which exhibited centromere misdivisions. The highest frequencies of homoeologous pairing in hybrids and most recombinants were obtained for the barley chromosome 1HL. Recombinants for 4HL, 5HS, 6HS, and 7HS were rarely found. Meiotic pairing and recombinants involving chromosome 1HS were never observed. The results of this study demonstrate that fertile tetraploid interspecific hybrids with a high intergenomic pairing at meiosis are valuable basic material for introgression breeding in barley.

The Hordeum bulbosum 25S-18S rDNA region: comparison with Hordeum vulgare and other Triticeae

2019 ◽  
Vol 74 (11-12) ◽  
pp. 319-328
Author(s):  
Oleg Georgiev ◽  
Kiril Mishev ◽  
Maria Krasnikova ◽  
Meglena Kitanova ◽  
Anna Dimitrova ◽  
...  
Keyword(s):  
Hordeum Vulgare ◽  
18S Rdna ◽  
Intergenic Spacer ◽  
Nucleolar Organizer ◽  
The Other ◽  
Nucleolar Organizer Regions ◽  
Hordeum Bulbosum ◽  
Promoter Sequences ◽  
External Transcribed Spacer

Abstract Hordeum vulgare and Hordeum bulbosum are two closely related barley species, which share a common H genome. H. vulgare has two nucleolar organizer regions (NORs), while the NOR of H. bulbosum is only one. We sequenced the 2.5 kb 25S-18S region in the rDNA of H. bulbosum and compared it to the same region in H. vulgare as well as to the other Triticeae. The region includes an intergenic spacer (IGS) with a number of subrepeats, a promoter, and an external transcribed spacer (5′ETS). The IGS of H. bulbosum downstream of 25S rRNA contains two 143-bp repeats and six 128-bp repeats. In contrast, the IGS in H. vulgare contains an array of seven 79-bp repeats and a varying number of 135-bp repeats. The 135-bp repeats in H. vulgare and the 128-bp repeats in H. bulbosum show similarity. Compared to H. vulgare, the 5′ETS of H. bulbosum is shorter. Additionally, the 5′ETS regions in H. bulbosum and H. vulgare diverged faster than in other Triticeae genera. Alignment of the Triticeae promoter sequences suggests that in Hordeum, as in diploid Triticum, transcription starts with guanine and not with adenine as it is in many other plants.

Identification of Hordeum bulbosum chromosomes in H. vulgare – H. bulbosum substitutions using isozyme markers

Genome ◽  
1992 ◽  
Vol 35 (3) ◽  
pp. 454-460 ◽  
Author(s):  
V. Thiele ◽  
R. A. Pickering ◽  
G. Melz ◽  
W. Pohler
Keyword(s):  
Hordeum Vulgare ◽  
Diagnostic Value ◽  
Hordeum Bulbosum ◽  
Alien Chromosome ◽  
Chromosome Identification ◽  
Selfed Progeny ◽  
Isozyme Markers ◽  
Chromosome Substitutions ◽  
Homoeologous Relationships

Hordeum bulbosum chromosomes 1Hb, 4Hb, 6Hb, and 7Hb were identified in five monosomic and one double monosomic H. vulgare – H. bulbosum substitution using 11 isozyme systems. In all substitutions analyzed, diagnostic isozyme bands for H. bulbosum chromosomes were found in the same isozyme systems and zones having diagnostic value for the homoeologous H. vulgare chromosomes. However, bands that are normally diagnostic for the 3Hv region appeared in one 6Hv substitution and in one selfed progeny from another 6Hv substitution.Key words: Hordeum vulgare, Hordeum bulbosum, alien chromosome substitutions, isozymes, chromosome identification, homoeologous relationships.

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