Evaluation of winter wheat as a source of high yield potential for the breeding of spring wheat

Euphytica ◽  
1967 ◽  
Vol 16 (2) ◽  
pp. 231-251 ◽  
Author(s):  
Moshe J. Pinthus
Keyword(s):  
Winter Wheat ◽  
Spring Wheat ◽  
Yield Potential ◽  
High Yield ◽  
High Yield Potential

scholarly journals Genomic Prediction and Indirect Selection for Grain Yield in US Pacific Northwest Winter Wheat Using Spectral Reflectance Indices from High-Throughput Phenotyping

2019 ◽  
Vol 21 (1) ◽  
pp. 165 ◽  
Author(s):  
Dennis N. Lozada ◽  
Jayfred V. Godoy ◽  
Brian P. Ward ◽  
Arron H. Carter
Keyword(s):  
Winter Wheat ◽  
Pacific Northwest ◽  
Prediction Accuracy ◽  
Indirect Selection ◽  
Yield Potential ◽  
High Yield ◽  
High Throughput Phenotyping ◽  
Reflectance Indices ◽  
Selection Of ◽  
High Yield Potential

Secondary traits from high-throughput phenotyping could be used to select for complex target traits to accelerate plant breeding and increase genetic gains. This study aimed to evaluate the potential of using spectral reflectance indices (SRI) for indirect selection of winter-wheat lines with high yield potential and to assess the effects of including secondary traits on the prediction accuracy for yield. A total of five SRIs were measured in a diversity panel, and F5 and doubled haploid wheat breeding populations planted between 2015 and 2018 in Lind and Pullman, WA. The winter-wheat panels were genotyped with 11,089 genotyping-by-sequencing derived markers. Spectral traits showed moderate to high phenotypic and genetic correlations, indicating their potential for indirect selection of lines with high yield potential. Inclusion of correlated spectral traits in genomic prediction models resulted in significant (p < 0.001) improvement in prediction accuracy for yield. Relatedness between training and test populations and heritability were among the principal factors affecting accuracy. Our results demonstrate the potential of using spectral indices as proxy measurements for selecting lines with increased yield potential and for improving prediction accuracy to increase genetic gains for complex traits in US Pacific Northwest winter wheat.

scholarly journals Yield component variation in winter wheat grown under drought stress

2000 ◽  
Vol 80 (4) ◽  
pp. 739-745 ◽  
Author(s):  
B. L. Duggan ◽  
D. R. Domitruk ◽  
D. B. Fowler
Keyword(s):  
Drought Stress ◽  
Winter Wheat ◽  
Grain Yield ◽  
Triticum Aestivum L ◽  
Yield Component ◽  
Yield Potential ◽  
High Yield ◽  
Crop Water ◽  
Kernel Number ◽  
High Yield Potential

Crops produced in the semiarid environment of western Canada are subjected to variable and unpredictable periods of drought stress. The objective of this study was to determine the inter-relationships among yield components and grain yield of winter wheat (Triticum aestivum L) so that guidelines could be established for the production of cultivars with high yield potential and stability. Five hard red winter wheat genotypes were grown in 15 field trials conducted throughout Saskatchewan from 1989–1991. Although this study included genotypes with widely different yield potential and yield component arrangements, only small differences in grain yield occurred within trials under dryland conditions. High kernel number, through greater tillering, was shown to be an adaptation to low-stress conditions. The ability of winter wheat to produce large numbers of tillers was evident in the spring in all trials; however, this early season potential was not maintained due to extensive tiller die-back. Tiller die-back often meant that high yield potential genotypes became sink limiting with reduced ability to respond to subsequent improvements in growing season weather conditions. As tiller number increased under more favourable crop water conditions genetic limits in kernels spike−1 became more identified with yield potential. It is likely then, that tillering capacity per se is less important in winter wheat than the development of vigorous tillers with numerous large kernels spike−1. For example, the highest yielding genotype under dryland conditions was a breeding line, S86-808, which was able to maintain a greater sink capacity as a result of a higher number of larger kernels spike−1. It appears that without yield component compensation, a cultivar can be unresponsive to improved crop water conditions (stable) or it can have a high mean yield, but it cannot possess both characteristics. Key words: Triticum aestivum L., wheat, drought stress, kernel weight, kernel number, spike density, grain yield

scholarly journals Yield Potential and Stability Indices as Methods to Evaluate Sprung Wheat Genotypes under Drought

1999 ◽  
Vol 4 (2) ◽  
pp. 53
Author(s):  
R. Ahmad ◽  
A. Tanveer ◽  
J. C. Stark ◽  
T. Mustafa
Keyword(s):  
Water Stress ◽  
Spring Wheat ◽  
Relative Yield ◽  
Yield Stability ◽  
Yield Potential ◽  
High Yield ◽  
Drought Susceptibility Index ◽  
Individual Genotype ◽  
The Mean ◽  
High Yield Potential

Selection for drought tolerance typically involves evaluating genotypes for either high yield potential or stable performance under varying degrees of water stress. Field Studies were conducted in 1992 and 1993 to assess methods for evaluating genotypes with combined high yield potential and stability, in both years, 12 spring wheat (Triticum aestivum. L.) genotypes were grown under two irrigation levels (well-watered and stressed) imposed between tillering and anthesis with a line-source sprinkler irrigation system. Drought susceptibility index (the ratio of the yield of genotype in drought to the yield of the same genotype in well watered conditions standardized by the mean yield of all genotypes in drought and well watered conditions) and relative yield (yield of an individual genotype under drought divided by the yield of the highest yielding individual genotype in a population under drought) values were used to describe yield stability and yield potential of the 12 spring wheat genotypes. There were year-to-year variations in drought susceptibility index (DSI) and relative yield (RY) values within genotypes and changes in genotypic rankings within years. The DSI values ranged from 0.42 to 1.24 in 1992 and from 0.51 to 1.59 in 1993. The mean RY were 0.79 and 0.86 in 1992 and 1993, respectively. The DSI did not provide a good indication of yield potential as some genotypes has DSI < 1 but RY lower than average under water-stressed conditions. The RY (higher than average) under water stress was a good indicator of yield potential of a genotype per se but gave no indication of yield stability. The plots of DSI vs. RY values were found useful in identifying genotypes with high yield potential and relatively stable yield performance under different moisture regimes.

The impact of variation in grain number and individual grain weight on winter wheat yield in the high yield potential environment of Ireland

2017 ◽  
Vol 87 ◽  
pp. 40-49 ◽  
Author(s):  
Joseph P. Lynch ◽  
Deirdre Doyle ◽  
Shauna McAuley ◽  
Fiona McHardy ◽  
Quentin Danneels ◽  
...  
Keyword(s):  
Winter Wheat ◽  
Wheat Yield ◽  
Grain Weight ◽  
Yield Potential ◽  
High Yield ◽  
Grain Number ◽  
Winter Wheat Yield ◽  
The Impact ◽  
High Yield Potential

scholarly journals Different origin soft spring wheat varieties and lines comparative analysis

2021 ◽  
Vol 843 (1) ◽  
pp. 012002
Author(s):  
N V Davydova ◽  
E S Romanova ◽  
V A Nardid ◽  
A O Kazachenko ◽  
A V Shirokolava ◽  
...  
Keyword(s):  
Spring Wheat ◽  
Climatic Conditions ◽  
Yield Potential ◽  
High Yield ◽  
Wheat Varieties ◽  
High Productivity ◽  
Abiotic Stressors ◽  
High Level ◽  
Abiotic Environmental Factors ◽  
High Yield Potential

Abstract This work is devoted to the study of spring soft wheat samples collection material. Eighty collection specimens were evaluated, divided by their origin into four groups. The assessment was carried out according to the limiting characteristics for spring wheat: high productivity, stable over the years, resistance to biotic and abiotic environmental factors. A two-year field test made it possible to compare different groups in terms of yield, and to identify the most promising varieties and lines for the conditions of the Central Non-Black Earth Region. The evaluation of the collection samples of origin various groups showed that the varieties and lines of their own selection were the most adapted to the soil and climatic conditions of the Central Non-Chernozem region. The new lines of spring wheat, along with a high level of yield, showed resistance to biotic and abiotic stressors. Varieties of foreign selection are distinguished by a strong non-spreading stem, high density of the stem, as well as high resistance to the most harmful leaf diseases. Of particular interest are the varieties of the Belarusian selection Darya, Dalech, Viza, Rostan with a high yield potential at the level of 5.0-6.0 t/ha.

DIFFERENTIAL ALUMINUM TOLERANCE OF HIGH-YIELDING, EARLY-MATURING CANADIAN WHEAT CULTIVARS AND GERMPLASM

1989 ◽  
Vol 69 (1) ◽  
pp. 61-69 ◽  
Author(s):  
KEITH G. BRIGGS ◽  
GREGORY J. TAYLOR ◽  
IAN STURGES ◽  
JOHN HODDINOTT
Keyword(s):  
Triticum Aestivum ◽  
Winter Wheat ◽  
Spring Wheat ◽  
Aluminum Tolerance ◽  
Crop Management ◽  
Field Trials ◽  
Yield Potential ◽  
High Yield ◽  
Wheat Cultivars ◽  
Al Tolerance

Twenty-eight spring wheat (Triticum aestivum) cultivars were tested for tolerance to aluminum (Al) using solution culture techniques. Fourteen of these cultivars were also grown in the field under two different management levels, Conventional and Intensive Crop Management (ICM), to determine maximum yield potentials in the Edmonton region and to determine if individual cultivars respond differently to management levels on high fertility fallow conditions. Based upon a root weight index (RWI), seven of the 28 spring wheat cultivars tested (K.Kongoni, PT741, K.Nyumbu, PT726, Norquay, PF7748, Maringa) were more tolerant to Al than the winter wheat standard for Al tolerance, Atlas 66. The winter wheat standard for Al sensitivity, Scout 66, ranked most sensitive to Al, but 11 spring wheat cultivars were equally sensitive (Lancer, Wildcat, Columbus, Park, Bluesky, Kenyon, Benito, BW92, Neepawa, Conway, Katepwa). In the field, cultivars varied in yield potential and days to maturity in both the Conventional and ICM treatments; however, ICM provided no additional benefit in terms of yield. Six genotypes (Bluesky, Norquay, Oslo, PT726, PT741, PT742) were significantly higher yielding than Neepawa and matured as early as Park. Six of the nine highest yielding cultivars from the field trials had Al tolerance ratings (RWI values) greater than 0.80 (80% of control), while five Canadian Western Red Spring (CWRS) cultivars, the lowest yielding from the field trials, had RWI values less than or equal to 0.43. The reason for the apparent association between high yield potential and tolerance to Al is unknown.Key words: wheat, Triticum aestivum, aluminum tolerance, high yield, early maturity, intensive crop management

Genotype–environment interaction of no-till winter wheat in Western Canada

2001 ◽  
Vol 81 (1) ◽  
pp. 7-16 ◽  
Author(s):  
D. R. Domitruk ◽  
B. L. Duggan ◽  
D. B. Fowler
Keyword(s):  
Winter Wheat ◽  
Grain Yield ◽  
Yield Potential ◽  
High Yield ◽  
Western Canada ◽  
Crop Water ◽  
Ge Interaction ◽  
Wide Range ◽  
Stress Environments ◽  
High Yield Potential

Differences among cultivars in their response to changes in crop water availability are reflected in genotype–environment (GE) interactions for grain yield. With the recent expansion of the winter wheat production area in western Canada, it is important that plant breeders and agronomists have an understanding of the significance of GE interactions as they relate to regional adaptation of genotypes. Consequently, the objective of this study was to determine the phenotypic stability of recent high-yielding winter wheat genotypes grown under drought and low stress conditions on the Canadian prairies and to assess the effect that crop water status has on GE interactions. Eighteen field trials were conducted throughout Saskatchewan over a 3-yr period. Five hard red winter wheat genotypes were selected for evaluation in these trials on the basis of unique characteristics identified in earlier studies. Natural variation in weather among locations and years and irrigation produced a wide range in the timing and intensity of drought stress. The high yield potential of recent winter wheat selections was confirmed. A nonsignificant genotype-location effect meant that geographic subregions requiring specific adaptive traits could not be identified. In contrast, significant effects of years and genotype-year and location-year interactions indicated that annual differences in weather had a greater influence on relative genotype performance than weather differences among locations. Significant within-site genotypic variation for grain yield was observed only at high rainfall and irrigated sites, and the GE interaction was larger than the genotypic variance component when there were wide differences in environmental conditions. The GE interaction effect was not significant when only dryland sites were considered. A poor association between yield rank at the highly productive and drought-stressed sites was attributed to genotypic differences in yield potential and the effect of drought on the expression of yield potential. Joint regression, pairwise correlated response, stability, and convergence analyses were conducted in an effort to better interpret the practical importance of the GE interactions. A tendency for the genotype regression lines to converge below the range of grain yields expected in the region indicated that genotypes with the highest mean yield were widely adapted and that winter wheat breeders should select for high yield potential in low stress environments. However, the expression of grain yield potential was reduced enough to suggest that winter wheat yields in western Canada are likely to benefit from this “high” yield potential only under moderate and low stress conditions. Therefore, because there is a wide diversity of crop water conditions in this region, trial locations should also include targeted high stress environments to identify genotypes with high performance over a wide range of environments. Key words: Triticum aestivum L., drought stress, stability, regression analyses, grain yield

FloRunTM ‘331’ Peanut Variety

EDIS ◽  
2019 ◽  
Vol 2019 (1) ◽  
Author(s):  
Barry L. Tillman
Keyword(s):  
Seed Size ◽  
Growth Habit ◽  
Yield Potential ◽  
High Yield ◽  
University Of Florida ◽  
High Oleic ◽  
Central Stem ◽  
Research And Education ◽  
The University ◽  
High Yield Potential

FloRunTM ‘331’ peanut variety was developed by the University of Florida, Institute of Food and Agricultural Sciences, North Florida Research and Education Center near Marianna, Florida.  It was released in 2016 because it combines high yield potential with excellent disease tolerance. FloRunTM ‘331’ has a typical runner growth habit with a semi-prominent central stem and medium green foliage.  It has medium runner seed size with high oleic oil chemistry.

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