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An investigation of gamma-radiation sensitivity on in vitro study of Hordeum vulgare L.
Pinaki Chaudhuri,Rupak K. Sengupta,Partha D. Ghosh
Acta Societatis Botanicorum Poloniae , 1995, DOI: 10.5586/asbp.1995.022
Abstract: Gamma-radiation sensitivity was studied on in vitro condition in Hordeum vulgare L. The variation of callusing response assessed with the increasing level of gamma-radiation treatment and regeneration delayed at higher dose level.
Chromosomal Variation in Two Species of Hordeum  [PDF]
Mst. Nahida Laiju,G. Kabir,M.J. Islam,, M. Hasanuzzaman
Asian Journal of Plant Sciences , 2003,
Abstract: The present study was conducted for karyomorphological investigation in 15 lines of two species of Hordeum. All the lines showed a diploid chromosome number of 14. Differences were observed regarding chromosome length, total chromatin length (TCL), type etc. among the 15 entries. The longest (11.06 m) chromosomes were observed in BTON-10 while the shortest (4.23 m) in BEL-4 and BEL-36 of Hordeum vulgare. Extra large chromosomes were found in BEL-4 (1 pair) and BTON-10 (5 pairs) of H. vulgare. Large type chromosomes were found in BHV-105, BTON-10 and conquest of H. vulgare. Medium type and relatively short type chromosomes were absent in BEL-36, BHV-1 and BTON-10 of H. vulgare, respectively. More metacentric chromosomes (7 pairs) were found in BHV-1 of H. vulgare. Maximum chromatin length (70.21 m) was also found in BTON-10 and minimum (40.96 m) in BEL-36 of H. vulgare. Maximum (47.76%) and minimum (39.88%) total fractional percentage (TF %) were found in BHV-1 and API-19 of H. vulgare, respectively. Each line has a specific chromosomal morphology which might be responsible for the variations of Hordeum species.
Different Salts Effects on the Germination of Hordeum vulgare and Hordeum bulbosum
A. Tavili,M. Biniaz
Pakistan Journal of Nutrition , 2009,
Abstract: The germination responses of Hordeum ulgare seeds to saline stress caused by different salt types was studied. For this, 25 seeds of mentioned species were placed on filter paper in Petri dishes containing distilled water (control), 60, 120, 180, 240, 300, 360 and 420 mM. saline solution of NaCl, CaCl2 an KCl. The results indicated that saline levels effects were significant (P < 0.05) for seed germination percentage, seed germination velocity, mean time to germination, length of the stem and radicle and seed vigour. Seed germination decreased significantly by increasing salinity levels. Also, the results showed that H. vulgare is more tolerant than H. vulgare against salinity in germination stage.
Flora, Life Forms and Chorotypes of Plants in the Kavir Biosphere Reserve  [cached]
Y. Asri
Journal of Science and Technology of Agriculture and Natural Resources , 2004,
Abstract: Kavir Biosphere Reserve covers an area of 686598 hectares situated in the northwest of Dasht-e-Kavir and east of Daryach-e-Namak. The Biosphere Reserve presents a variety of habitats, including cliffs and rocky outcrops, piedmont plains, gravelly, deserts and sand dunes, saline plains and salt marshes, and seasonal rivers and springs. The main aim of this research is to identify the plant species and to introduce of the flora in Kavir biosphere reserve. For this purpose, plant samples were collected from different habitats of the area in three growing seasons between 1994-1999. The life forms of species were determined and the biological spectrum of the area was plotted. The position of the area concerning phytogeographical classification was studied based on geographical data and references. A total number of 359 species and subspecific taxa was identified. These include 3 gymnosperms, 312 dicotyledones and 44 monocotyledones. Altogether, 43 families and 224 genera are known from the area. The following families have the highest number of species: Chenopodiaceae, Asteraceae, Brassicaceae, Poaceae, Boraginaceae, and Fabaceae. Therophytes with 198 species (55.1%) are the most frequent life forms in the area. The distribution of 245 species (68.3%) is restricted to Irano-Turanian region. Of these, 30 species (12.2 %) are endemics of Iran. .
Metroglyph Analysis in Two Species of Hordeum  [PDF]
Mst. Nahida Laiju,M.J. Islam,M. Hasanuzzaman,M.A.S. Mondol
Pakistan Journal of Biological Sciences , 2002,
Abstract: Patterns of morphological variation in Hordeum species were determined by metroglyph analysis which revealed apparently four clusters comprising more than one line out of 15 studied. Cluster I was comprised of Centinella and Conquest of H. vulgare. Cluster II was comprised of single line of H. nudum and four lines (API-19, BEL-34, BEL-72 and BTON-10) of H. vulgare. Cluster III and IV were consisted of BEL-4, BTYN-8 and BTYN-37 and BEL-16, BHV-1, BHV-91, BHV-95 and BHV-105 of H. vulgare respectively. These clusters showed distinct graduation for breadth of flag leaves i.e., low (cluster I), relatively low (cluster III), intermediate (cluster II) and high (cluster IV). The ray`s pattern for 11 morphological characters on the glyph among the clusters revealed a marked variation for the presence or absence of rays.
Nature of Gene Action in Barley (Hordeum vulgare L.)  [PDF]
M.M. Rohman,R. Sultana,R. Podder,A.T.M. Tanjimul Islam
Asian Journal of Plant Sciences , 2006,
Abstract: A 6 x 6 diallel cross (excluding reciprocal) of barley (Hordeum vulgare L.) dictated both additive and non-additive components were important but dominance components were more predominant than additive components in controlling the inheritance of all the characters under study. The asymmetric distribution of dominant and recessive alleles at loci was found for all the characters. At least 3 groups of genes were found in controlling the dominance in yield. The highest heritability (89%) in narrow sense was observed in 1000 grain weight. Vr-Wr graph indicated over dominance and genetic diversity among the parents.
Hordein variation in Brazilian barley varieties (Hordeum vulgare L.) and wild barley (H. euclaston Steud. and H. stenostachys Godr.)
Echart-Almeida, Cinara;Cavalli-Molina, Suzana;
Genetics and Molecular Biology , 2000, DOI: 10.1590/S1415-47572000000200031
Abstract: sds-page was used to analyze the hordein polypeptide patterns of brazilian barley varieties (hordeum vulgare l.) and of two native species of hordeum from southern brazil (h. euclaston steud. and h. stenostachys godr.). forty different hordein polypeptide bands with molecular weights ranging from 30 to 94 kda were found in the seeds of the three species studied. twelve of the 14 varieties examined showed intravarietal polymorphism. the number of bands ranged from 10 to 17, depending on the variety, and from 3 to 13 among individual seeds, with a total of 26 bands in h. vulgare. phenograms using each seed as an operational taxonomic unit (otu) showed that the seeds from most varieties did not form distinct clusters. seeds from different plants of the native species varied considerably. the molecular weights of the hordein polypeptides of the two native species were quite different from those of h. vulgare. there was a greater similarity between the native species than with h. vulgare, although h. stenostachys was slightly closer to the cultivated species than h. euclaston.
Hordein variation in Brazilian barley varieties (Hordeum vulgare L.) and wild barley (H. euclaston Steud. and H. stenostachys Godr.)  [cached]
Echart-Almeida Cinara,Cavalli-Molina Suzana
Genetics and Molecular Biology , 2000,
Abstract: SDS-PAGE was used to analyze the hordein polypeptide patterns of Brazilian barley varieties (Hordeum vulgare L.) and of two native species of Hordeum from southern Brazil (H. euclaston Steud. and H. stenostachys Godr.). Forty different hordein polypeptide bands with molecular weights ranging from 30 to 94 kDa were found in the seeds of the three species studied. Twelve of the 14 varieties examined showed intravarietal polymorphism. The number of bands ranged from 10 to 17, depending on the variety, and from 3 to 13 among individual seeds, with a total of 26 bands in H. vulgare. Phenograms using each seed as an operational taxonomic unit (OTU) showed that the seeds from most varieties did not form distinct clusters. Seeds from different plants of the native species varied considerably. The molecular weights of the hordein polypeptides of the two native species were quite different from those of H. vulgare. There was a greater similarity between the native species than with H. vulgare, although H. stenostachys was slightly closer to the cultivated species than H. euclaston.
Response of Barley (Hordeum vulgare L.) at Various Growth Stages to Salt Stress
Shazia Naseer
Journal of Biological Sciences , 2001,
Abstract: A pot experiment was conducted during winter 1996-97, to determine the response of barely (Hordeum vulgare L.) at various growth stages to salt stress (0, 8, 12 and 16 dS m -1 NaCl). A progressive decrease occurred in all the growth and yield parameters with increasing soil salinity. Grain yield was reduced by 45.83% at higher salinity level as compared to control. Among the varieties, Jow-83 proved comparatively better than Jow-87. Salinity affected at all the growth stages but it was more pronounced at vegetative stage than flower initiation and grain filling stages.
Karyotypic Study of Seven Species of Hordeum in Fars Province  [cached]
A. R. Nasirzadeh,F. Ansari-Asl
Journal of Science and Technology of Agriculture and Natural Resources , 2007,
Abstract: A karyotypic study was performed on seven species of Hordeum Genus including, H. vulgare, H. spontaneum, H. glaucum, H. distichon, H. geniculatum , H. bulbosum and H. violaceum. According to the cytological studies in the laboratory, chromosome numbers and ploidy levels of species were identified. Chromosome analysese including the length of each chromosome, long and short arms length and long - short arm ratio were also done. For each species, the karyotype as an ideogram was drawn. The results showed that H. geniculatum, H. bulbosum, and H. violaceum were tetraploid (2n=4x=28) and the other species were diploid (2n=2x=14). Chromosomal study of H. geniculatum and H. distichon is reported for the first time from Iran. Karyotypic formula showed that the diploid species were 7m and tetraploid were 12m +2sm. According to the karyotypic symmetry, all species were in the 1A class. Using the S%, TF%, D.R.L., T.V. and X parameters, karyotypic symmetry of species was analyzed and determined.
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