scholarly journals Genetics of lodging resistance related traits in bread wheat (Triticum aestivum L.)

2020 ◽  
Vol 49 (3) ◽  
pp. 611-617
Author(s):  
Sana Muazzam ◽  
Abdus Salam Khan ◽  
Zulfiqar Ali ◽  
Sultan Habibullah Khan
Keyword(s):  
Gene Action ◽  
Triticum Aestivum L ◽  
Kernel Weight ◽  
Stem Diameter ◽  
Lodging Resistance ◽  
Nitrogen Levels ◽  
Nodal Distance ◽  
Design Generation ◽  
Weight Number ◽  
Plot Design

To evaluate the genetic background of lodging traits, six populations of two wheat crosses were sown under different nitrogen levels by using split plot design. Generation mean analysis was used to estimate the gene action for lodging related traits. Results showed genetic variability and significant differences for all traits. Allelic and non-allelic gene actions were operative for different traits with different magnitude under both normal and lodging condition. Duplicate types of espistasis were observed for grain yield per plant, 1000- kernel weight, number of grains per spike and number of tillers. The stem diameter, height of basal nodes and basal inter-nodal distance depicted the additive, additive × dominance and dominance gene action. The aforementioned results showed that plant height, stem diameter, height of basal nodes and basal internodal distance were more prone traits for lodging and selection should be practiced in later generations with increasing homozygosity.

scholarly journals AAC Redstar hard red spring wheat

2020 ◽  
Author(s):  
Andrew James Burt ◽  
D.G. Humphreys ◽  
J. Mitchell Fetch ◽  
Denis Green ◽  
Thomas Fetch ◽  
...  
Keyword(s):  
Spring Wheat ◽  
Protein Concentration ◽  
Triticum Aestivum L ◽  
Kernel Weight ◽  
Head Blight ◽  
Lodging Resistance ◽  
Canadian Prairies ◽  
Hard Red Spring Wheat ◽  
Early Maturing ◽  
Moderately Resistant

AAC Redstar is an early maturing, high yielding hard red spring wheat (Triticum aestivum L.) cultivar that is well adapted to the northern Canadian Prairies and eligible for grades of Canada Western Red Spring (CWRS) wheat. Over three years (2016-2018) of testing in the Parkland Wheat Cooperative registration trials, AAC Redstar was 11% higher yielding than AC Splendor, 6% higher than Parata, and 4% higher than Glenn and Carberry. AAC Redstar matured 3 days earlier than Glenn, 2 days earlier than Carberry and had similar maturity to Parata. AAC Redstar was shorter than all checks except Carberry and had better lodging resistance compared to all the check cultivars in the registration trial. The test weight and thousand kernel weight of AAC Redstar were similar to Carberry. The grain protein concentration of AAC Redstar was 0.2% lower than Carberry. AAC Redstar was rated moderately resistant to Fusarium head blight, leaf rust, stripe rust and common bunt. AAC Redstar had resistant reactions to loose smut, and stem rust. AAC Redstar was registered under the CWRS market class.

EFFECTS OF SEEDING RATE AND ROW SPACING ON AGRONOMIC CHARACTERISTICS OF GLENLEA, PITIC 62 AND NEEPAWA WHEATS

1975 ◽  
Vol 55 (2) ◽  
pp. 363-367 ◽  
Author(s):  
K. G. BRIGGS
Keyword(s):  
Triticum Aestivum ◽  
Unit Area ◽  
Triticum Aestivum L ◽  
Kernel Weight ◽  
Test Weight ◽  
Row Spacing ◽  
Seeding Rate ◽  
Days To Maturity ◽  
Narrow Row ◽  
Plot Design

Three cultivars of wheat (Triticum aestivum L. em Thell.), Glenlea, Pitic 62 and Neepawa, were grown in a seeding rate and row spacing experiment at two locations in 1972 and 1973. In a split-plot design, row spacings of 15, 23 and 30 cm were used as main plots, and subplot seeding rates of 33.6, 67.3 and 100.9 kg/ha were applied for each cultivar. Data were collected on yield, days to maturity, plant height, lodging, kernel weight and test weight. The few significant effects of row spacing indicated that narrow row spacings tend to increase yield and decrease days to maturity. Higher seeding rates per unit area generally resulted in higher yields for all cultivars and, to some extent, earlier maturity. Glenlea wheat seeded at 100.9 kg/ha gave the highest yield in all tests, and at this seeding rate took an average 125 days to reach maturity, compared to 120 days for Neepawa and 129 days for Pitic 62. Seeding rate had virtually no effect on height, kernel weight or test weight of any of the wheats.

scholarly journals GENE ACTIONS OF TRAITS CONTRIBUTING TO LODGING RESISTANCE IN WHEAT (Triticum aestivum L)

2007 ◽  
Vol 20 (2) ◽  
pp. 23-30 ◽  
Author(s):  
Z. I. Sarker ◽  
A. K. M. Shamsuddin ◽  
R. Ara
Keyword(s):  
Recurrent Selection ◽  
Gene Action ◽  
Breaking Strength ◽  
Gene Interaction ◽  
Triticum Aestivum L ◽  
Lodging Resistance ◽  
Gene Effects ◽  
Additive Gene ◽  
Almost All ◽  
Additive Genes

Estimates of gene action for lodging related traits at Wheat Research Center during 1999-2002 in three crosses of wheat showed different genetic control of the traits among the crosses. For almost all traits, additive or dominance effects or both components were significant in either three- or six-parameter model, indicating that both additive and dominance gene effects were operative for different traits contributing to lodging resistance. Although duplicate type of epistasis was also observed for second internode breaking strength, plant height and spikes per plant and grain yield per plant once in different crosses, additive x additive epistasis along with additive gene action for the aforesaid traits would improve selection of the same in the segregating populations. The additive x dominance gene interaction for second internode length, diameter and wall thickness would be useful too for improvement of second internode breaking strength and consequently lodging resistance, as their inheritance and selection in segregating populations would be relatively easier than the traits controlled by completely non-additive genes. For duplicate type of epistasis biparental mating or recurrent selection followed by conventional selection is suggested.DOI: http://dx.doi.org/10.3329/bjpbg.v20i2.17031

scholarly journals Effect of nitrogen levels and nitrogen ratios on lodging resistance and yield potential of winter wheat (Triticum aestivum L.)

PLoS ONE ◽  
2017 ◽  
Vol 12 (11) ◽  
pp. e0187543 ◽  
Author(s):  
Mingwei Zhang ◽  
Hui Wang ◽  
Yuan Yi ◽  
Jinfeng Ding ◽  
Min Zhu ◽  
...  
Keyword(s):  
Triticum Aestivum ◽  
Winter Wheat ◽  
Triticum Aestivum L ◽  
Yield Potential ◽  
Lodging Resistance ◽  
Nitrogen Levels

scholarly journals Impacts of irrigation frequency and nitrogen rate on productivity, quality, nutrient uptake and nutrient use efficiencies of late sown wheat (Triticum aestivum L.)

2018 ◽  
Author(s):  
Mukesh Kumar ◽  
R.K. Pannu ◽  
Amit Kumar ◽  
Bhagat Singh ◽  
A.K. Dhaka
Keyword(s):  
Grain Yield ◽  
Nutrient Uptake ◽  
Triticum Aestivum L ◽  
Irrigation Frequency ◽  
Nitrogen Rate ◽  
Nitrogen Levels ◽  
Nutrient Use ◽  
Irrigation Levels ◽  
Nutrient Use Efficiencies ◽  
Plot Design

An experiment was conducted at CCS Haryana Agricultural University, Hisar during rabi 2010-11 and 2011-12, consisting of three irrigation frequencies viz. one irrigation at CRI, two irrigations at CRI and heading and four irrigations at CRI, late tillering, heading and milking in main plots and five nitrogen levels (0, 50, 100, 150 and 200 kg N/ha) in sub-plots in strip plot design with four replications. Grain yield and NUE increased significantly with increased irrigation levels. Increase irrigation frequency increased the N (33.4 and 31.3 %), P (42.2 and 42.3 %) and K (26.7 and 25.1 %) uptake over one irrigation during 2010-11 and N (16.0 and 15.9 %), P (19.4 and 20.7 %) and K (11.2 and 13.5 %) during 2011-12. Increased nitrogen dose increased the protein content, hectolitre weight, sedimentation value and grain yield over control. Maximum and minimum nutrient uptake was recorded with 200 and 0 kg N/ha. 

AAC Icefield hard white winter wheat

2018 ◽  
Vol 98 (6) ◽  
pp. 1395-1405 ◽  
Author(s):  
R.J. Graf ◽  
B.L. Beres ◽  
H.S. Randhawa ◽  
D.A. Gaudet ◽  
A. Laroche
Keyword(s):  
Winter Wheat ◽  
Doubled Haploids ◽  
Triticum Aestivum L ◽  
Kernel Weight ◽  
Western Canada ◽  
Head Blight ◽  
Lodging Resistance ◽  
Wide Range ◽  
Prevalent Disease ◽  
Moderately Resistant

AAC Icefield is the first hard white winter wheat (Triticum aestivum L.) cultivar registered in western Canada. It was selected from a population of F1-derived doubled-haploids of the cross McClintock/83W020007. Registration testing occurred from 2013 to 2017. These data, collected over 53 site–years, showed that AAC Icefield yielded significantly more grain than CDC Buteo, was similar in yield to Flourish, Moats, and CDC Falcon, and was significantly lower yielding than AAC Elevate and Sunrise. AAC Icefield expressed fair survival, intermediate maturity, short straw, and very good lodging resistance. Test weight and kernel weight were within the range of the checks. Ratings based on the prevalent disease races in western Canada were summarized as resistant to stem rust, moderately resistant to leaf and stripe rust, intermediate in resistance to Fusarium head blight, and susceptible to common bunt. The grain yield, agronomic characteristics, and disease resistance attributes of AAC Icefield provide good adaptation for all areas of western Canada. Despite lower grain protein concentration than Canada Western Red Winter wheat cultivars, AAC Icefield showed exceptional gluten strength per unit of protein. AAC Icefield is well-suited to a wide range of end-uses including white and whole-grain pan bread, French and flat breads, Asian steamed bread, and noodles. Currently designated in the Canada Western Experimental wheat class to facilitate test marketing, a decision on permanent class placement for AAC Icefield will be made by the Canadian Grain Commission following the assessment of market interest.

scholarly journals Identification of Candidate Gene for Internode Length in Rice to Enhance Resistance to Lodging Using QTL Analysis

Plants ◽  
2021 ◽  
Vol 10 (7) ◽  
pp. 1369
Author(s):  
Dan-Dan Zhao ◽  
Ju-Hyeong Son ◽  
Muhammad Farooq ◽  
Kyung-Min Kim
Keyword(s):  
Candidate Genes ◽  
Qtl Analysis ◽  
Middle Part ◽  
Internode Length ◽  
Stem Diameter ◽  
Chromosome 1 ◽  
Doubled Haploid Population ◽  
Lodging Resistance ◽  
Cytochrome P450 Family ◽  
Uppermost Internode

Internode length and stem diameter are the primary traits affecting the lodging resistance of rice. Traits related to the length of the panicle (LP), uppermost internode (LUI), second internode (LSI), third internode (LTI), fourth internode (LFI), lowest internode (LLI) as well as stem diameter at the uppermost internode (SDUI), second internode (SDSI), third internode (SDTI), fourth internode (SDFI), and lowest internode (SDLI) in 120 Cheongcheong/Nagdong doubled haploid population were investigated using a quantitative trait locus (QTL) analysis. Thirty-four QTL regions affected LP and the length of each internode. Twenty-six QTL regions were associated with the stem diameter of each internode. RM12285-RM212 on chromosome 1 contained 10 QTLs related to the internode length, which have overlapped for over 2 years. Twenty-three candidate genes were screened using mark interval. Among the candidate genes, Os01g0803900, named OsCYPq1, which is in the Cytochrome P450 family, might be involved in gibberellins (GA) synthesis. GA is an essential plant growth regulator that affects plant height. OsCYPq1 catalyzes oxidation steps in the middle part of the GA pathway. OsCYPq1 is expected to provide valuable information to improve the marker assessment for target traits and QTL gene cloning in rice.

Improvement of lodging resistance with QTLs for stem diameter in rice (Oryza sativa L.)

2008 ◽  
Vol 117 (5) ◽  
pp. 749-757 ◽  
Author(s):  
Takayuki Kashiwagi ◽  
Eiji Togawa ◽  
Naoki Hirotsu ◽  
Ken Ishimaru
Keyword(s):  
Oryza Sativa ◽  
Oryza Sativa L ◽  
Stem Diameter ◽  
Lodging Resistance

scholarly journals AAC Network hard red winter wheat

2020 ◽  
Vol 100 (6) ◽  
pp. 737-746
Author(s):  
R.J. Graf ◽  
R.J. Larsen ◽  
B.L. Beres ◽  
R. Aboukhaddour ◽  
A. Laroche ◽  
...  
Keyword(s):  
Winter Wheat ◽  
Protein Concentration ◽  
Triticum Aestivum L ◽  
Head Blight ◽  
Lodging Resistance ◽  
Maize Pollen ◽  
Hard Red Winter Wheat ◽  
Moderate Resistance ◽  
Milling Yield ◽  
Red Winter Wheat

AAC Network is a semi-dwarf hard red winter wheat (Triticum aestivum L.) cultivar that is well adapted across western Canada and eligible for grades of Canada Western Red Winter (CWRW) wheat. It was developed using wheat × maize pollen doubled haploid methodology. AAC Network was evaluated in the Western Canadian Winter Wheat Cooperative registration trials relative to CDC Buteo, Emerson, Moats, and AAC Elevate for 4 yr (2016–2019). Based on 44 replicated trials, AAC Network produced grain yield similar to AAC Elevate, the highest yielding check, with a protein concentration 0.9 units higher. AAC Network had fair to good winter survival, relatively late maturity, short straw with excellent lodging resistance, and high test weight. AAC Network expressed resistance to stem and stripe rust, moderate resistance to leaf rust and common bunt, and intermediate resistance to Fusarium head blight. In addition to increased grain protein concentration, AAC Network showed improvements in gluten strength and flour water absorption, and it maintained the excellent milling yield and low flour ash attributes of the CWRW wheat class.

Agronomic evaluation of a tiller inhibition gene (tin) in wheat. I. Effect on yield, yield components, and grain protein

2005 ◽  
Vol 56 (2) ◽  
pp. 169 ◽  
Author(s):  
B. L. Duggan ◽  
R. A. Richards ◽  
A. F. van Herwaarden ◽  
N. A. Fettell
Keyword(s):  
Triticum Aestivum L ◽  
Kernel Weight ◽  
Grain Protein ◽  
Terminal Drought ◽  
Spike Number ◽  
Effect On Yield ◽  
Productive Tiller ◽  
Wheat Lines ◽  
Positive Effect ◽  
Yield Penalty

Reduced tillering cereals have been proposed as being advantageous under terminal drought conditions through their reported reduction in non-productive tiller number and reduced soil water use prior to anthesis. This study was conducted to determine whether wheat (Triticum aestivum L.) lines containing the tiller inhibition (tin) gene have a yield penalty over their commercial near-isogenic counterparts. A terminal drought was experienced in all experiments. The effects of the tin gene were investigated in 4 different near-isogenic pairs of lines grown at 2 sowing densities at 4 locations in the eastern Australian wheatbelt over a 3-year period. Averaged over all experiments and lines, grain yield was unaffected by the presence of the tin gene. However, the highest yielding line contained the tin gene and its yield was 5% higher than all other lines. Averaged across the different genetic backgrounds, the tin gene decreased fertile spike number by 11%, increased the number of kernels/spike by 9%, and there was a 2% increase in kernel weight. The tin gene increased the harvest index by an average of 0.02, whereas above-ground biomass was reduced by 7%. Increasing sowing density from 50 to 100 kg/ha had little influence on yield or yield-related characteristics in both the restricted tillering and freely tillering lines. There was an interaction between sowing rate and the presence of the tin gene on yield, with tin lines yielding 0.2 t/ha more than the freely tillering lines at the higher sowing rate, whereas there was no effect at the lower sowing rate. The response of several lines containing the tin gene to nitrogen fertiliser was also investigated at 2 sites. Nitrogen increased spike number in all lines but the number remained around 20% less than in the freely tillering cultivars. The yield of wheat lines containing the tin gene was 6% greater than their near-isogenic pairs where nitrogen status was high in the presence of terminal drought. Grain protein concentration was unaffected by the presence of the tin gene at high grain protein sites, whereas at lower grain protein sites it had a positive effect.

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