Estimation of quantitative genetic parameters for grain yield and quality in winter wheat under high and low nitrogen fertilization

Šarčević, Hrvoje; Jukić, Katarina; Ikić, Ivica; Lovrić, Ana

doi:10.1007/s10681-014-1154-9

Cited by 13 publications

(14 citation statements)

References 34 publications

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“…SSI has been utilized as a selection criterion to identify best performing genotypes under stress conditions in earlier studies in wheat [21,22,34]. In the present study, the positive and significant correlation between GY under normal and stress conditions corroborates earlier findings on wheat [22,29,35]. The GMP and YSI selection indices have positive and significant correlation with yield under both stress and normal conditions.…”

Section: Correlation Studies Of Selection Indicessupporting

confidence: 90%

“…Significant environments and genotypes effects under low and HN conditions were also reported [28] for plant height, grain yield, and NDVI in wheat. Significant genotypes, environments, and genotypes × environments effects for GY and test weight were also reported [29]. A significant G × N interaction for grain yield in wheat was also reported in earlier studies [4,11].…”

Section: Phenotypic Variationsupporting

confidence: 75%

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Identification of Wheat Cultivars for Low Nitrogen Tolerance Using Multivariable Screening Approaches

et al. 2020

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A set of thirty-six wheat cultivars were grown for two consecutive years under low and high nitrogen conditions. The interactions of cultivars with different environmental factors were shown to be highly significant for most of the studied traits, suggesting the presence of wider genetic variability which may be utilized for the genetic improvement of desired trait(s). Three cultivars, i.e., RAJ 4037, DBW 39 and GW 322, were selected based on three selection indices, i.e., tolerance index (TOL), stress susceptibility index (SSI), and yield stability index (YSI), while two cultivars, HD 2967 and MACS 6478, were selected based on all four selection indices which were common in both of the study years. According to Kendall’s concordance coefficient, the consistency of geometric mean productivity (GMP) was found to be highest (0.778), followed by YSI (0.556), SSI (0.472), and TOL (0.200). Due to the high consistency of GMP followed by YSI and SSI, the three selection indices could be utilized as a selection tool in the identification of high-yielding genotypes under low nitrogen conditions. The GMP and YSI selection indices had a positive and significant correlation with grain yield, whereas TOL and SSI exhibited a significant but negative correlation with grain yield under both high and low nitrogen conditions in both years. The common tolerant genotypes identified through different selection indices could be utilized as potential donors in active breeding programs to incorporate the low nitrogen tolerant genes to develop high-yielding wheat varieties for low nitrogen conditions. The study also helps in understanding the physiological basis of tolerance in high-yielding wheat genotypes under low nitrogen conditions.

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Section: Correlation Studies Of Selection Indicessupporting

confidence: 90%

Section: Phenotypic Variationsupporting

confidence: 75%

Identification of Wheat Cultivars for Low Nitrogen Tolerance Using Multivariable Screening Approaches

et al. 2020

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“…In general, the increase in GY was correlated with the increase in the rate of N fertilizer application, which might be due to the availability of sufficient N for the proper growth and development of the plants. Šarčević et al ( 2014 ) reported a 10% reduction of GY at low N condition compared to normal condition in wheat. The significant and positive correlation among different root traits and GY and yield-attributing traits indicated complementary functional roles of the root traits in improving the GY by improving the nutrient acquisition from the soil.…”

Section: Discussionmentioning

confidence: 99%

Genetic Dissection Uncovers Genome-Wide Marker-Trait Associations for Plant Growth, Yield, and Yield-Related Traits Under Varying Nitrogen Levels in Nested Synthetic Wheat Introgression Libraries

et al. 2021

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Nitrogen is one of the most important macronutrients for crop growth and metabolism. To identify marker-trait associations for complex nitrogen use efficiency (NUE)-related agronomic traits, field experiments were conducted on nested synthetic wheat introgression libraries at three nitrogen input levels across two seasons. The introgression libraries were genotyped using the 35K Axiom® Wheat Breeder's Array and genetic diversity and population structure were examined. Significant phenotypic variation was observed across genotypes, treatments, and their interactions across seasons for all the 22 traits measured. Significant positive correlations were observed among grain yield and yield-attributing traits and root traits. Across seasons, a total of 233 marker-trait associations (MTAs) associated with fifteen traits of interest at different levels of nitrogen (N0, N60, and N120) were detected using 9,474 genome-wide single nucleotide polymorphism (SNP) markers. Of these, 45 MTAs for 10 traits in the N0 treatment, 100 MTAs for 11 traits in the N60 treatment, and 88 MTAs for 11 traits in the N120 treatment were detected. We identified putative candidate genes underlying the significant MTAs which were associated directly or indirectly with various biological processes, cellular component organization, and molecular functions involving improved plant growth and grain yield. In addition, the top 10 lines based on N response and grain yield across seasons and treatments were identified. The identification and introgression of superior alleles/donors improving the NUE while maintaining grain yield may open new avenues in designing next generation nitrogen-efficient high-yielding wheat varieties.

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“…Estimates of heritability at high-and low-input levels together with genetic correlation between input levels have been used for the prediction of relative efficiency of direct vs. indirect selection in wheat to give recommendations for selection programs, aimed at producing cultivars for low-input or organic agriculture (Brancourt-Hulmel et al, 2005;Przystalski et al, 2008;Annicchiarico et al, 2010;Cormier et al, 2013;Šarčević et al, 2014). Brancourt-Hulmel et al (2005) and Cormier et al ( 2013) concluded that breeding programs aiming to produce N-efficient cultivars for low-input environments should include testing and selection at low input to maximize selection gains for grain yield (GY).…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Variation for Nitrogen Use Efficiency Traits in Wheat Under Contrasting Nitrogen Treatments in South-Eastern Europe

et al. 2021

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Wheat cultivars differ in their response to nitrogen (N) fertilizer, both in terms of its uptake and utilization. Characterizing this variation is an important step in improving the N use efficiency (NUE) of future cultivars while maximizing production (yield) potential. In this study, we compared the agronomic performance of 48 diverse wheat cultivars released between 1936 and 2016 at low and high N input levels in field conditions to assess the relationship between NUE and its components. Agronomic trait values were significantly lower in the low N treatment, and the cultivars tested showed a significant variation for all traits (apart from the N remobilization efficiency), indicating that response is genotype-dependent, although significant genotype × environment effects were also observed. Overall, we show a varietal improvement in NUE over time of 0.33 and 0.30% year–1 at low and high N, respectively, and propose that this is driven predominantly by varietal selection for increased yield. More complete understanding of the components of these improvements will inform future targeted breeding and selection strategies to support a reduction in fertilizer use while maintaining productivity.

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Estimation of quantitative genetic parameters for grain yield and quality in winter wheat under high and low nitrogen fertilization

Cited by 13 publications

References 34 publications

Identification of Wheat Cultivars for Low Nitrogen Tolerance Using Multivariable Screening Approaches

Identification of Wheat Cultivars for Low Nitrogen Tolerance Using Multivariable Screening Approaches

Genetic Dissection Uncovers Genome-Wide Marker-Trait Associations for Plant Growth, Yield, and Yield-Related Traits Under Varying Nitrogen Levels in Nested Synthetic Wheat Introgression Libraries

Variation for Nitrogen Use Efficiency Traits in Wheat Under Contrasting Nitrogen Treatments in South-Eastern Europe

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