scholarly journals Aktywność cytokininowa sześciu odmian Hordeum vulgare L. [Cytokinin activity of six cultivars of Hordeum vulgare L.]

2015 ◽  
Vol 32 (1) ◽  
pp. 27-37 ◽  
Author(s):  
B. Politycka ◽  
A. Stroiński ◽  
Z. Krzywański ◽  
M. W. Borys

Cytokinin activity was determined in roots, crowns, ears of six varieties of the barley in the tobacco Wisconsin 38 callus tissue test. Analysis was made in early stage of ears. The order increasing values of the total cytokinin activity (the total activity of compounds fitting their mobility with zeatin, zeatin ribosid and their more polar derivatives) were for most part of varieties: younger roots < older roots < crowns < ears. Dependences between the cytokinin activity and fresh weight of analysed material were not found.

2018 ◽  
Vol 98 (5) ◽  
pp. 1203-1211 ◽  
Author(s):  
W.G. Legge ◽  
A. Badea ◽  
J.R. Tucker ◽  
T.G. Fetch ◽  
M. Banik ◽  
...  

AAC Goldman is a hulled, two-row, spring, malting barley (Hordeum vulgare L.) cultivar widely adapted to western Canada. It was developed from the cross TR04282/Newdale made in 2002 and was evaluated in the Western Cooperative Two-row Barley Registration Test (2010–2011) as well as the Collaborative Malting Barley Trials (2011–2012) conducted by the malting and brewing industry before being registered in 2018. AAC Goldman has a desirable combination of agronomic, malting quality, and disease resistance traits including low deoxynivalenol content.


2013 ◽  
Vol 93 (2) ◽  
pp. 291-297 ◽  
Author(s):  
W. G. Legge ◽  
J. R. Tucker ◽  
T. G. Fetch ◽  
S. Haber ◽  
J. G. Menzies ◽  
...  

Legge, W. G., Tucker, J. R., Fetch, Jr., T. G., Haber, S., Menzies, J. G., Noll, J. S., Tekauz, A., Turkington, T. K. and Savard, M. E. 2013. Major barley. Can. J. Plant Sci. 93: 291–297. Major is a hulled two-row spring malting barley (Hordeum vulgare L.) cultivar widely adapted to western Canada. Developed from the cross Rivers/Newdale made in 1999, Major was evaluated in the Western Cooperative Two-row Barley Registration Test (2006–2007) and the Collaborative Malting Barley Trials (2007–2008) conducted by the malting and brewing industry before being registered in 2009. Major has an excellent combination of agronomic traits and disease resistance with malting quality similar to AC Metcalfe, a cultivar widely used commercially by the malting and brewing industry in domestic and export markets.


2008 ◽  
Vol 88 (4) ◽  
pp. 717-723 ◽  
Author(s):  
W. G. Legge ◽  
S. Haber ◽  
D. E. Harder ◽  
J. G. Menzies ◽  
J. S. Noll ◽  
...  

Newdale is a two-row spring malting barley (Hordeum vulgare L.) cultivar widely adapted to western Canada that has performed particularly well in Manitoba and Saskatchewan. Developed from a cross made in 1991, Newdale was evaluated in the Western Cooperative Two-row Barley Registration Test (1998-1999) and the Collaborative Malting Barley Trials (1999-2000) conducted by the malting and brewing industry before being registered in 2001. Newdale is a significantly higher yielding cultivar with good agronomic traits, moderate disease resistance and good malting quality. Key words: Malting barley, Hordeum vulgare L., cultivar description, yield, disease resistance, malting quality


2013 ◽  
Vol 93 (3) ◽  
pp. 557-564 ◽  
Author(s):  
W. G. Legge ◽  
J. R. Tucker ◽  
B. Bizimungu ◽  
T. G. Fetch ◽  
S. Haber ◽  
...  

Legge, W. G., Tucker, J. R., Bizimungu, B., Fetch Jr., T. G., Haber, S., Menzies, J. G., Noll, J. S., Tekauz, A., Turkington, T. K., Savard, M. E. and Choo, T. M. 2013. Cerveza barley. Can. J. Plant Sci. 93: 557–564. Ceveza is a doubled-haploid hulled two-row spring malting barley (Hordeum vulgare L.) cultivar widely adapted to western Canada, Quebec, and the Maritimes. Developed from the cross TR251/Newdale//TR253/Newdale made in 1998, Cerveza was evaluated in the Western Cooperative Two-row Barley Registration Test (2006–2007) and the Collaborative Malting Barley Trials (2007–2008) conducted by the malting and brewing industry before being registered in 2010. Cerveza was also evaluated in Quebec and the Maritimes in 2007–2009. Cerveza's desirable combination of agronomic traits, disease resistance and malting quality, particularly high grain yield and malt extract, should make it a useful cultivar for producers and the malting and brewing industry.


2015 ◽  
Vol 23 (2) ◽  
Author(s):  
N. O. Khromykh ◽  
L. V. Shupranova ◽  
Y. V. Lykholat ◽  
V. S. Bil’chuk ◽  
V. S. Fedenko ◽  
...  

Morphometrical indexes, and spectrophotometrically measured protein and glutathione (GSH, GSSG) contents and activity of peroxidase (POD, EC 1.11.1.7), glutathione-reductase (GR, EC 1.6.4.2) and glutathione S-transferase (GST, EС 2.5.1.18) were examined in Hordeum vulgare L. seedlings after 0.01 and 0.1 mg/l AgNPs treatment during 24 h. We tested the hypothesis that the action of nanoparticles has a stressful effect on the physiological and biochemical processes of seedlings. Growth of roots was inhibited and fresh weight decreased by 29% and 21% under low and high concentrations respectively. Conversely, leaf growth was intensified, and leaf length (16% and 18%) and fresh weight (35% and 44%) increased at low and high concentrations respectively. POD activity in roots increased by 26% and 7%, and decreased in leaves to 57% and 81% of control at low and high concentrations respectively. GSH content changed insignificantly, but GSSG content increased in roots (2 and 2.5-fold) and in leaves (13% and 30%) at both AgNPs concentrations. GSH/GSSG-ratio decreased in roots (1.9 and 2.6-fold) and in leaves (1.1 and 1.3-fold) at low and high concentrations respectively. GR activity decreased at a concentration of 0.01 mg/l (7% in roots and 17% in leaves respectively) and increased at 0.1 mg/l (52% in roots and 6% in leaves). GST activity increased in leaves (52% and 78% at low and high concentrations) but decreased by 17% in roots under high concentration of nanosilver. Thus, the action of AgNPs on barley seedlings had a dose-dependent and organ-specific character. The various directions of changes in growth, metabolic processes and activity of antioxidant defense systems appear to be a stress response of barley seedlings to the impact of AgNPs, which underlines the necessity of detailed study of plant intracellular processes exposed to the action of nanomaterial. 


2021 ◽  
Vol 22 (24) ◽  
pp. 13411
Author(s):  
Katarzyna Gajek ◽  
Agnieszka Janiak ◽  
Urszula Korotko ◽  
Beata Chmielewska ◽  
Marek Marzec ◽  
...  

Root hairs play a crucial role in anchoring plants in soil, interaction with microorganisms and nutrient uptake from the rhizosphere. In contrast to Arabidopsis, there is a limited knowledge of root hair morphogenesis in monocots, including barley (Hordeum vulgare L.). We have isolated barley mutant rhp1.e with an abnormal root hair phenotype after chemical mutagenesis of spring cultivar ‘Sebastian’. The development of root hairs was initiated in the mutant but inhibited at the very early stage of tip growth. The length of root hairs reached only 3% of the length of parent cultivar. Using a whole exome sequencing (WES) approach, we identified G1674A mutation in the HORVU1Hr1G077230 gene, located on chromosome 1HL and encoding a cellulose synthase-like C1 protein (HvCSLC1) that might be involved in the xyloglucan (XyG) synthesis in root hairs. The identified mutation led to the retention of the second intron and premature termination of the HvCSLC1 protein. The mutation co-segregated with the abnormal root hair phenotype in the F2 progeny of rhp1.e mutant and its wild-type parent. Additionally, different substitutions in HORVU1Hr1G077230 were found in four other allelic mutants with the same root hair phenotype. Here, we discuss the putative role of HvCSLC1 protein in root hair tube elongation in barley.


Author(s):  
R.H.M. Cross ◽  
C.E.J. Botha ◽  
A.K. Cowan ◽  
B.J. Hartley

Senescence is an ordered degenerative process leading to death of individual cells, organs and organisms. The detection of a conditional lethal mutant (achloroplastic) of Hordeum vulgare has enabled us to investigate ultrastructural changes occurring in leaf tissue during foliar senescence.Examination of the tonoplast structure in six and 14 day-old mutant tissue revealed a progressive degeneration and disappearance of the membrane, apparently starting by day six in the vicinity of the mitochondria associated with the degenerating proplastid (Fig. 1.) where neither of the plastid membrane leaflets is evident (arrows, Fig. 1.). At this stage there was evidence that the mitochondrial membranes were undergoing retrogressive changes, coupled with disorganization of cristae (Fig. 2.). Proplastids (P) lack definitive prolamellar bodies. The cytoplasmic matrix is largely agranular, with few endoplasmic reticulum (ER) cisternae or polyribosomal aggregates. Interestingly, large numbers of actively-budding dictysomes, associated with pinocytotic vesicles, were observed in close proximity to the plasmalemma of mesophyll cells (Fig. 3.). By day 14 however, mesophyll cells showed almost complete breakdown of subcellular organelle structure (Fig. 4.), and further evidence for the breakdown of the tonoplast. The final stage of senescence is characterized by the solubilization of the cell wall due to expression and activity of polygalacturonase and/or cellulose. The presence of dictyosomes with associated pinocytotic vesicles formed from the mature face, in close proximity to both the plasmalemma and the cell wall, would appear to support the model proposed by Christopherson for the secretion of cellulase. This pathway of synthesis is typical for secretory glycoproteins.


Author(s):  
А.В. ЖЕЛЕЗНОВ ◽  
◽  
Н.Б. ЖЕЛЕЗНОВА ◽  
Т.В. КУКОЕВА ◽  
Н.В. БУРМАКИНА ◽  
...  

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