Genotype by environment interactions for seed yield and oil content in sunflower (H. annuus L.) using AMMI model

Outliers are a common phenomenon when genotypes are evaluated over locations and years under field conditions and such outliers makes studying genotype-environment Interactions difficult. Robust-AMMI models which use a combination of robust fit and robust SVD approaches, denoted as ‘R-AMMI-RLM’ have been proposed to study GEI in presence of such outliers. Instead of ‘R-AMMI-RLM’ we propose a model which uses a combination of linear fit and robust SVD to study GEI in presence of outliers and we denote this model as ‘R-AMMI-LM’. Here we prove that ‘RAMMI-LM’ was superior over ‘R-AMMI-RLM’ as it recorded very low residual sum of squares and low RMSE values. Thus proposed, ‘R-AMMI-LM’ model could explain the GEI more precisely even in presence of outliers.

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Genotype-by-environment interaction for seed yield and oil content of safflower (Carthamus tinctorius L.) genotypes

Genetika ◽

10.2298/gensr2101011k ◽

2021 ◽

Vol 53 (1) ◽

pp. 11-22

Author(s):

Hasan Koç

Keyword(s):

Seed Yield ◽

Oil Content ◽

Genotype By Environment Interaction ◽

Carthamus Tinctorius ◽

Climatic Conditions ◽

High Yield ◽

Environment Interaction ◽

Genotype By Environment ◽

Biplot Analysis ◽

Main Effects

This research was carried out to determine genotype-by-environment interaction of safflower genotypes tested from 2014 to 2017. Konya, where the research was carried out, is the location with the most irregular and the lowest precipitation in Turkey. In this research, the variance analysis over years and genotypes showed that the main effects on genotypes made by year and genotype-by-year interaction were statistically significant (p<0.01) for all characteristics examined. The climatic conditions, especially the amount and distribution of precipitation, over the years allowed genotypes to perform substantially differently in seed yield and oil content of safflower genotypes. The biplot analysis provided significant advantages in identifying the promising genotypes. The genotypes showed similar patterns of performance across the years, while the amount and distribution of precipitation showed similar patterns. The experimental results revealed that the desired genotypes in terms of both stability and high yield, such as G?kt?rk, G7, and Din?er, G5 and G9 and oil content, such as G?kt?rk, Balc?, and Linas, existed. In comparison to oil content, seed yield was more sensitive to environmental factors.

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EFFECTS OF DIFFERENT GIBBERELLIC ACID DOSES ON SEED YIELD, OIL CONTENT AND SOME QUALITY TRAITS OF SAFFLOWER (Carthamus tinctorius L.)

Journal of Global Innovations in Agricultural and Social Sciences ◽

10.22194/jgiass/5.1.774 ◽

2017 ◽

pp. 5-9

Author(s):

Burhan Arslan ◽

Emrullah Culpan

Keyword(s):

Gibberellic Acid ◽

Seed Yield ◽

Oil Content ◽

Carthamus Tinctorius ◽

Quality Traits

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Effect of sulphur on the seed yield and oil content of sesame (Sesamum indicum L.)

Journal of the Bangladesh Agricultural University ◽

10.3329/jbau.v17i1.40660 ◽

2019 ◽

Vol 17 (1) ◽

pp. 33-38

Author(s):

Swapan Kumar Paul ◽

Mosa Morsheda Khatun ◽

Md Abdur Rahman Sarkar

Keyword(s):

Plant Height ◽

Seed Yield ◽

Dry Matter ◽

Oil Content ◽

Dry Matter Production ◽

Production Plant ◽

Matter Production ◽

Stover Yield ◽

Number Of Seeds ◽

Number Of Branches

Sulphur is a component of plant amino acids, proteins, vitamins, and enzyme structures which influence the productivity of oil seed and total oil content. The experiment was conducted to find out the effect of sulphur on the seed yield and oil content of sesame in Bangladesh. The experiment comprised three varieties of sesame viz. Binatil-2, Binatil-3 and BARI Til-4 and six levels of sulphur (S) viz. 0, 10, 20, 30, 40 and 50 kg S ha–1. The experiment was laid out in a randomized complete block design with three replications. Dry matter production, crop characters, yield components, seed yield and oil content were significantly influenced by variety, level of sulphur and their interaction. The highest dry matter production plant–1 at 50 DAS (17.56 g), plant height (101.3 cm), number of branches plant–1 (3.66), number of pods plant-1 (41.56), number of seeds pod-1 (58.83), seed yield (747.2 kg ha-1), stover yield (2243.0 kg ha–1) and oil content (40.03%) were obtained in BARI Til-4 while the corresponding lowest values of all parameters were recorded in Binatil-2. In case of sulphur application, the highest dry matter production plant–1 at 50 DAS (20.81 g), plant height (109.7 cm), number of branches plant–1 (3.87), number of pods plant–1 (46.13), number of seeds pod-1 (56.67), seed yield (800.0 kg ha–1), stover yield (2787 kg ha–1 ) and oil content (43.97%) were obtained when crop was fertilized with 30 kg S ha–1 while the lowest seed yield (502.2 kg ha–1), stover yield (1550.0 kg ha–1) and oil content (32.80%) were obtained in control (0 kg S ha–1). BARI Til-4 fertilized with 30 kg S ha–1 produced the highest dry matter plant–1 at 50 DAS (24.80 g), number of pods plant–1 (51.13), seeds pod–1 (62.0) and seed yield (1011.0 kg ha–1). The highest oil content (43.97%) was also recorded in BARI Til-4 fertilized with 30 kg S ha–1, which was as good as that of BARI Til-4 fertilized with 40 kg S ha–1. Therefore, BARI Til-4 fertilized with 30 kg S ha–1 can be considered as a promising practice in respect of seed yield and oil content of sesame in Bangladesh. J. Bangladesh Agril. Univ. 17(1): 33–38, March 2019

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Genotype by environment interactions and combining ability for strawberry families grown in diverse environments

Euphytica ◽

10.1007/s10681-017-1892-6 ◽

2017 ◽

Vol 213 (5) ◽

Cited By ~ 10

Author(s):

Megan M. Mathey ◽

Sonali Mookerjee ◽

Lise L. Mahoney ◽

Kazim Gündüz ◽

Umesh Rosyara ◽

...

Keyword(s):

Combining Ability ◽

Genotype By Environment Interactions ◽

Genotype By Environment

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Genetic Parameters and Genotype-by-Environment Interactions in Regional Progeny Tests of Pinus taeda L. in the Southern USA

Forest Science ◽

10.1093/forsci/fxaa035 ◽

2020 ◽

Author(s):

Edwin Lauer ◽

Andrew Sims ◽

Steven McKeand ◽

Fikret Isik

Keyword(s):

Genetic Variation ◽

Pinus Taeda ◽

Genetic Parameters ◽

Genetic Correlations ◽

Breeding Program ◽

Model Fit ◽

Genotype By Environment Interactions ◽

Genotype By Environment ◽

Progeny Tests ◽

Pinus Taeda L

Abstract Genetic parameters were estimated using a five-series multienvironment trial of Pinus taeda L. in the southern USA. There were 324 half-sib families planted in five test series across 37 locations. A set of six variance/covariance matrices for the genotype-by-environment (G × E) effect for tree height and diameter were compared on the basis of model fit. In single-series analysis, extended factor analytical models provided generally superior model fit to simpler models for both traits; however, in the combined-series analysis, diameter was optimally modeled using simpler variance/covariance structures. A three-way compound term for modeling G × E interactions among and within series yielded substantial improvements in terms of model fit and standard errors of predictions. Heritability of family means ranged between 0.63 and 0.90 for both height and diameter. Average additive genetic correlations among sites were 0.70 and 0.61 for height and diameter, respectively, suggesting the presence of some G × E interaction. Pairs of sites with the lowest additive genetic correlations were located at opposite ends of the latitude range. Latent factor regression revealed a small number of parents with large factor scores that changed ranks significantly between southern and northern environments. Study Implications Multienvironmental progeny tests of loblolly pine (Pinus taeda L.) were established over 10 years in the southern United States to understand the genetic variation for the traits of economic importance. There was substantial genetic variation between open-pollinated families, suggesting that family selection would be efficient in the breeding program. Genotype-by-environment interactions were negligible among sites in the deployment region but became larger between sites at the extremes of the distribution. The data from these trials are invaluable in informing the breeding program about the genetic merit of selection candidates and their potential interaction with the environment. These results can be used to guide deployment decisions in the southern USA, helping landowners match germplasm with geography to achieve optimal financial returns and conservation outcomes.

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Effect of varying seeding rates on hybrid and conventional summer rape performance in Manitoba

Canadian Journal of Plant Science ◽

10.4141/cjps92-079 ◽

1992 ◽

Vol 72 (3) ◽

pp. 635-641 ◽

Cited By ~ 13

Author(s):

A. E. Van Deynze ◽

P. B. E. McVetty ◽

R. Scarth ◽

S. R. Rimmer

Keyword(s):

Protein Content ◽

Chlorophyll Content ◽

Seed Yield ◽

Harvest Index ◽

Dry Matter ◽

Oil Content ◽

Seed Quality ◽

Seeding Rate ◽

Seed Formation ◽

Matter Production

To compare the effects of varying seeding rate on the agronomic performance, phenology and seed quality of hybrid and conventional summer rape cultivars, four hybrid and two conventional summer rape cultivars were seeded at 1.5, 3.0, 4.5, 6.0 and 9.0 kg ha−1 at two locations for 3 yr. The hybrid cultivars were, very importantly, 24% higher yielding and produced 50% more total dry matter than the conventional cultivars. The hybrid cultivars were, on average, 1.3% lower in seed oil content, 1.0% higher in seed protein content and equal in sum of oil and protein in the seed compared with the conventional cultivars. The hybrid cultivars were on average, 1.3 d later to 50% flowering and 1.1 d later to maturity than the average for the conventional cultivars, (i.e., equal or earlier to flowering and maturity than Regent). The hybrid cultivars were also 3.9% lower in harvest index and 1.3 ppm lower in chlorophyll content than the conventional cultivars. In spite of these differences, there were no significant cultivar-by-seeding-rate interactions, indicating that the hybrid and conventional cultivars responded similarly to varying seeding rate. Lodging, days to 50% flowering, days to maturity, harvest index, survival, oil content and protein content displayed significant linear responses to varying seeding rate. Stand at maturity, seed yield and total dry matter production displayed significant linear and quadratic responses to varying seeding rate. Varying seeding rate had no effect on seed formation period, the sum of oil and protein content, or chlorophyll content. A seeding rate of 6 kg ha−1 maximized seed yield for both hybrid and conventional summer rape cultivars.Key words: Brassica napus, canola, seed quality, agronomy, phenology

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Effect of Cultivars and Planting Date on Yield, Oil Content, and Fatty Acid Profile of Flax Varieties (Linum usitatissimumL.)

International Journal of Agronomy ◽

10.1155/2014/150570 ◽

2014 ◽

Vol 2014 ◽

pp. 1-7 ◽

Cited By ~ 5

Author(s):

Maricel Andrea Gallardo ◽

Héctor José Milisich ◽

Silvina Rosa Drago ◽

Rolando José González

Keyword(s):

Fatty Acid ◽

Fatty Acid Profile ◽

Seed Yield ◽

Oil Content ◽

Planting Date ◽

Oil Composition ◽

Experimental Station ◽

Negative Effect ◽

Seed Yields

In order to determine the effect of cultivars and planting date on flax fatty acid profile, seed yield, and oil content, an assay with seven cultivars (Baikal, Prointa Lucero, Prointa Ceibal, Panambí INTA, Curundú INTA, Carapé INTA, and Tape INTA) was carried out at Parana Agricultural Experimental Station, Argentina. Significant differences among cultivars were found for content of palmitic (5–7 g/100 g), stearic (5–8 g/100 g), linoleic (13–19 g/100 g), saturated (11–15 g/100 g), and unsaturated acids (92–96 g/100 g) within the seven cultivars. The best seed yields were observed in Prointa Lucero and Carapé INTA varieties (2091.50 kg·ha−1and 2183.34 kg·ha−1, respectively) in the first planting date and in Carapé INTA and Prointa Lucero (1667 kg·ha−1and 1886 kg·ha−1, respectively) in the second planting date. A delayed planting date had a negative effect on seed yield (1950 kg·ha−1and 1516 kg·ha−1) and oil content (845 kg·ha−1and 644 kg·ha−1) but did not affect oil composition.

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