ETUDE DE LA TOLERANCE DE CULTIVARS D’ORGE A LA TACHE HELMINTHOSPORIENNE

1987 ◽  
Vol 67 (1) ◽  
pp. 153-157 ◽  
Author(s):  
D. DOSTALER ◽  
G. J. PELLETIER ◽  
L. COUTURE
Keyword(s):  
Hordeum Vulgare ◽  
Grain Yield ◽  
Seed Weight ◽  
Bipolaris Sorokiniana ◽  
Spot Blotch ◽  
Grain Weight ◽  
Disease Development ◽  
Barley Cultivars ◽  
Moderate Disease ◽  
Key Words Barley

This study was conducted to assess tolerance of barley (Hordeum vulgare) cultivars to spot blotch. The barley cultivars Parkland, Bonanza and Laurier inoculated with spores of Bipolaris sorokiniana developed approximately the same level of spot blotch symptoms in the field. Natural disease development was minimal in plots treated with mancozeb; it was intermediate in uninoculated and untreated plots. Reduction of grain yield and grain weight differed with each cultivar. Disease had the most depressing effects on Parkland. Disease severity was highest on Laurier which suffered the least decrease in grain yield and grain weight compared to the checks. Yield and seed weight of Bonanza were not affected by low or moderate disease levels (checks) but were reduced when symptoms were severe (inoculations).Key words: Barley, cultivars, spot blotch, Bipolaris sorokiniana, tolerance, mancozeb

AC Queens barley

2000 ◽  
Vol 80 (2) ◽  
pp. 335-336 ◽  
Author(s):  
T. M. Choo ◽  
S. ter Beek ◽  
R. A. Martin ◽  
K. M. Ho ◽  
C. D. Caldwell ◽  
...  
Keyword(s):  
Hordeum Vulgare ◽  
Seed Weight ◽  
High Yield ◽  
Good Seed ◽  
Hordeum Vulgare L ◽  
Eastern Canada ◽  
Lodging Resistance ◽  
Good Test ◽  
Key Words Barley ◽  
Cultivar Description

AC Queens is a two-row, spring feed barley (Hordeum vulgare L.) cultivar developed by the Eastern Canada Barley Breeding Group, Agriculture and Agri-Food Canada. It has high yield, good test weight, good seed weight, and lodging resistance. AC Queens performs well in the Maritime Region of Canada. Key words: Barley, Hordeum vulgare L., cultivar description, high yield, high seed weight

AAC Vitality barley

2016 ◽  
Vol 96 (3) ◽  
pp. 367-370
Author(s):  
Thin Meiw Choo ◽  
Allen G. Xue ◽  
Richard A. Martin
Keyword(s):  
Hordeum Vulgare ◽  
Grain Yield ◽  
Spot Blotch ◽  
Research Centre ◽  
Seed Color ◽  
Net Blotch ◽  
Good Resistance ◽  
Hordeum Vulgare L ◽  
Moderately Resistant

AAC Vitality is a six-row spring feed barley (Hordeum vulgare L.) cultivar developed by the Eastern Cereal and Oilseed Research Centre, Agriculture and Agri-Food Canada. AAC Vitality had high grain yield, good resistance to lodging, and good resistance to straw break. It was late in heading and maturity. Its seed color was bright. AAC Vitality was moderately resistant to net blotch and spot blotch. AAC Vitality performs well in Ontario.

scholarly journals Molecular Mapping of Loci Conferring Susceptibility to Spot Blotch and Resistance to Powdery Mildew in Barley Using the Sequencing-Based Genotyping Approach

2020 ◽  
Vol 110 (2) ◽  
pp. 440-446 ◽  
Author(s):  
Yueqiang Leng ◽  
Mingxia Zhao ◽  
Jason Fiedler ◽  
Antonín Dreiseitl ◽  
Shiaoman Chao ◽  
...  
Keyword(s):  
Powdery Mildew ◽  
Molecular Mapping ◽  
Recombinant Inbred Lines ◽  
Major Gene ◽  
Bipolaris Sorokiniana ◽  
Spot Blotch ◽  
Blumeria Graminis ◽  
Seedling Stage ◽  
Barley Cultivars ◽  
Trait Locus

Spot blotch (SB) caused by Bipolaris sorokiniana and powdery mildew (PM) caused by Blumeria graminis f. sp. hordei are two important diseases of barley. To map genetic loci controlling susceptibility and resistance to these diseases, a mapping population consisting of 138 recombinant inbred lines (RILs) was developed from the cross between Bowman and ND5883. A genetic map was constructed for the population with 852 unique single nucleotide polymorphism markers generated by sequencing-based genotyping. Bowman and ND5883 showed distinct infection responses at the seedling stage to two isolates (ND90Pr and ND85F) of Bipolaris sorokiniana and one isolate (Race I) of Blumeria graminis f. sp. hordei. Genetic analysis of the RILs revealed that one major gene (Scs6) controls susceptibility to Bipolaris sorokiniana isolate ND90Pr, and another major gene (Mla8) confers resistance to Blumeria graminis f. sp. hordei isolate Race I, respectively. Scs6 was mapped on chromosome 1H of Bowman, as previously reported. Mla8 was also mapped to the short arm of 1H, which was tightly linked but not allelic to the Rcs6/Scs6 locus. Quantitative trait locus (QTL) analysis identified two QTLs, QSbs-1H-P1 and QSbs-7H-P1, responsible for susceptibility to spot blotch caused by Bipolaris sorokiniana isolate ND85F in ND5883, which are located on chromosome 1H and 7H, respectively. QSbs-7H-P1 was mapped to the same region as Rcs5, whereas QSbs-1H-P1 may represent a novel allele conferring seedling stage susceptibility to isolate ND85F. Identification and molecular mapping of the loci for SB susceptibility and PM resistance will facilitate development of barley cultivars with resistance to the diseases.

Variation in starch, protein, and fibre of Canadian barley cultivars

1995 ◽  
Vol 75 (4) ◽  
pp. 865-870 ◽  
Author(s):  
D. Kong ◽  
T. M. Choo ◽  
P. Narasimhalu ◽  
P. Jui ◽  
T. Ferguson ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Hordeum Vulgare ◽  
Protein Concentration ◽  
Environment Interaction ◽  
Hordeum Vulgare L ◽  
Eastern Canada ◽  
Barley Cultivars ◽  
Cultivar Development ◽  
Key Words Barley ◽  
Acid Detergent Fibre

Barley (Hordeum vulgare L.) is a major feed in the Maritime region of Canada, but information on the chemical composition of barley cultivars grown in the Maritimes is lacking. Therefore, a study was undertaken to determine if starch, protein, neutral-detergent fibre (NDF), and acid-detergent fibre (ADF) of barley vary from region to region in Canada and to determine if barley cultivars that originated from Eastern Canada exhibit different chemical composition than those that originated from Western Canada. The chemical composition of two-row and six-row, covered and hulless, and feed and malting cultivars were also compared. Seventy-five cultivars were tested in eight environments (i.e. Charlottetown, Ottawa, Brandon, and Bentley in 1991 and 1992). These cultivars were classified into eight classes in four comparisons: eastern vs. western, two-row vs. six-row, hulless vs. covered, and feed vs. malting. Charlottetown grains were relatively low in protein, high in starch, and intermediate in NDF and ADF in comparison with grains produced at the other three locations. This suggests that more research in cultivar development and crop management is needed to increase the protein concentration of barley in the Maritimes. On average, two-row cultivars contained more starch and less fibre than six-row cultivars. Eastern two-row cultivars contained more protein than western two-row cultivars. As expected, hulless barleys contained more starch and protein, but less fibre than covered barleys. Canadian barley cultivars exhibited considerable variation in chemical composition. The cultivar x environment interaction was much smaller than the cultivar effect. Therefore, it is important to identify barley cultivars with high nutritional quality for use in commercial production. Key words: Barley, Hordeum vulgare L., cultivars, starch, protein, fibre

Differential effects of spot blotch on photosynthesis and grain yield in two barley cultivars

2014 ◽  
Vol 139 (3) ◽  
pp. 471-480 ◽  
Author(s):  
Esteban Hoffman ◽  
Luis Viega ◽  
Nicolás Glison ◽  
Ariel Castro ◽  
Sylvia Pereyra ◽  
...  
Keyword(s):  
Grain Yield ◽  
Spot Blotch ◽  
Differential Effects ◽  
Barley Cultivars

scholarly journals Yield and Yield Components of Barley (Hordeum vulgare L.) in Relation to Sowing Times

1970 ◽  
Vol 15 ◽  
pp. 139-145 ◽  
Author(s):  
MZ Alam ◽  
SA Haider ◽  
NK Paul
Keyword(s):  
Hordeum Vulgare ◽  
Field Experiment ◽  
Key Words ◽  
Yield Components ◽  
Harvest Index ◽  
Hordeum Vulgare L ◽  
Sowing Time ◽  
Barley Cultivars ◽  
Key Words Barley ◽  
Yield And Yield Components

A field experiment was carried out to study the influence of sowing times on yield and yield components of barley (Hordeum vulgare L.). Seeds of four barley cultivars (BB 1, Karan 19, Karan 163 and Karan 351) were sown with four sowing times (5 November, 17 November, 29 November and 11 December). Most of the yield and yield components were significantly highest in 17 November sowing. Among the cultivars most of the characters showed their highest values in BB 1 and the lowest in Karan 19. Harvest index was found highest in Karan 351 and lowest in BB 1. Key words: Barley, Sowing time, Yield.   doi: 10.3329/jbs.v15i0.2154   J. bio-sci. 15: 139-145, 2007

scholarly journals Morphological characters, plant phenology and yield of spring barley (Hordeum sativum L.) depending on cultivar properties and sowing date

2012 ◽  
Vol 65 (2) ◽  
pp. 171-176 ◽  
Author(s):  
Kazimierz Noworolnik
Keyword(s):  
Grain Yield ◽  
Unit Area ◽  
Spring Barley ◽  
Sowing Date ◽  
Morphological Characters ◽  
Grain Weight ◽  
Growth Stages ◽  
Barley Cultivars ◽  
State Research Institute ◽  
1000 Grain Weight

During the period 2008-2010, microplot experiments on spring barley were carried out in the experimental field of the Institute of Soil Science and Plant Cultivation – State Research Institute in Puławy, on a good wheat soil complex. The following cultivars were compared: ‘Conchita’, ‘Kormoran’, ‘Rufus’, ‘Skald’, ‘Skarb’ (2008-2009) as well as ‘Afrodite’, ‘Aliciana’, ‘Bordo’, ‘Skald’, and ‘Suweren’ (2009-2010), in terms of their morphological characters determining grain yield and their response to sowing date: 7-12 April and 17-22 April. Among the spring barley cultivars tested, there were large differences in productive tillering of plants, number of ears per unit area, and grain yield. Smaller differences related to number of grains per ear and 1000 grain weight. The cultivars ‘Suweren’ and ‘Skarb’ were characterized by high grain yield thanks to greater plant tillering and higher number of ears. The cultivar ‘Bordo’ was marked by the highest number of grains per ear, while cv. ‘Kormoran’ had the highest 1000 grain weight. A delayed sowing date caused a shortening of the growing season by 8-9 days and a shortening of all plant growth stages. This negatively affected number of ears per unit area and grain yield, but did not result in significant changes in number of grains per ear and 1000 grain weight. ‘Suweren’ and ‘Skarb’, i.e. cultivars with higher tillering ability, can be considered to be cultivars more tolerant to delayed sowing date.

scholarly journals Nitrogen and Phosphorus Salts Treatment Effect to Spot Blotch Development on Barley

2019 ◽  
Author(s):  
Vladimir Zakharov ◽  
Anton Sidorov ◽  
Lev Tyryshkin
Keyword(s):  
Leaf Spot ◽  
Host Plants ◽  
Bipolaris Sorokiniana ◽  
Spot Blotch ◽  
Growth Stages ◽  
Disease Development ◽  
Nitrogen And Phosphorus ◽  
Brown Leaf Spot ◽  
Brown Leaf ◽  
Adult Plants

The paper presents the data on seedling and adult resistance to dark-brown leaf spot blotch (Bipolaris sorokiniana) in barley samples described in modern literature as resistant to the disease and in varieties allowed growing in the territory of Russian Federation. All 32 samples and 69 varieties under study were highly susceptible to the blotch at both growth stages. This fact indicates to urgent need in developing new methodes for dark-brown leaf spot blotch protection. Treatment of barley plants varieties with mixture of nitrogen and phosphorus salts solution reduced the disease development on seedlings of 13 commercial varieties and on adult plants of 36 varieties (52 % out of all studied). For all these 36 varieties weight of 1000 grains was significantly higher on treated plots compared to untreated ones for 11–108 %. The mechanism of nitrogen and phosphorus salts effect on the dark-brown leaf spot blotch development (changing virulence/aggressiveness of the pathogen) indicates that change of the salts concentrations and their ratio in the solution could expand the set of host plants genotypes on which this treatment will decrease the disease development.

scholarly journals Yield reduction of spring barley in relation to disease development caused by Rhynchosporium secalis

1990 ◽  
Vol 62 (3) ◽  
pp. 245-254
Author(s):  
Reijo Karjalainen
Keyword(s):  
Grain Yield ◽  
Yield Components ◽  
Spring Barley ◽  
Severe Infection ◽  
Yield Reduction ◽  
Rhynchosporium Secalis ◽  
Disease Development ◽  
Infection Level ◽  
Barley Cultivars ◽  
Leaf Area Duration

Effects of barley scald caused by Rhynchosporium secalis on grain yield were studied in three spring barley cultivars under field conditions using artificial inoculation over three years. The disease strongly reduced the green-leaf area duration compared with fungicide-treated leaves. At low infection level, R. secalis reduced the grain yield of barley by 3—5 %. Moderate and severe infection reduced the grain yields of susceptible cultivars by 10—12 %. Single-tiller analysis of yield components indicated that grain weight and ear weight were most affected, but the number of grains was only insignificantly reduced by the disease. Implications of these results for controlling scald disease in Finland are discussed.

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