Effects of Plant and Canopy Density on Seed Yield and Oil Content in White Lupin (Lupinus albus)

1980 ◽  
Vol 16 (4) ◽  
pp. 409-414 ◽  
Author(s):  
R. McGibbon ◽  
Watkin Williams
Keyword(s):  
Seed Yield ◽  
Oil Content ◽  
Seed Oil ◽  
Lupinus Albus ◽  
White Lupin ◽  
Average Weight ◽  
Premature Senescence ◽  
Plant Populations ◽  
Canopy Density ◽  
Axillary Branches

SUMMARYHigh plant populations caused a reduction in pod set and consequently in seed yield. Removal of axillary branches reduced the average weight of seed and percentage seed oil on primary racemes, indicating transport of photosynthate from branch leaves to storage sites in pods on primary racemes. Debranching at low densities was also associated with premature senescence of leaves and desiccation of immature pods, suggesting that branch removal need not have an exclusively simple nutritional basis. High canopy density reduced oil content, and seeds borne on primary racemes had lower oil levels than those on axillary branches.

scholarly journals Yield, Antioxidant Components, Oil Content, and Composition of Onion Seeds Are Influenced by Planting Time and Density

Plants ◽  
2019 ◽  
Vol 8 (8) ◽  
pp. 293 ◽  
Author(s):  
Carmine Amalfitano ◽  
Nadezhda A. Golubkina ◽  
Laura Del Vacchio ◽  
Giuseppe Russo ◽  
Mario Cannoniero ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Leaf Area ◽  
Seed Yield ◽  
Oil Content ◽  
Seed Oil ◽  
Density Increase ◽  
Area Index ◽  
Planting Time ◽  
Plant Leaf ◽  
Crop Cycle

Research was carried out on onion landrace (Ramata di Montoro) for seed production in southern Italy, with the aim to evaluate the effects on yield and quality of four bulb planting times in factorial combination with four densities, using a split plot design with three replicates. The number of flower stalks per plant, their height and diameter, and the inflorescence diameter decreased with the bulb planting delay and density increase. The highest plant leaf area and LAI (leaf area index), seed yield, number, and mean weight were recorded with the earliest planting time, with the lowest bulb density eliciting the highest plant leaf area but the lowest LAI and seed yield per hectare. The ratio between seeds and inflorescence weight, and seed germinability, decreased with the planting delay and density increase. Seed oil, protein, and antioxidant content (polyphenols and selenium) were highest with the last crop cycle. The polyunsaturated fatty acids, predominant in oil, increased with planting time delay, whereas the monounsaturated fatty acids decreased. Linoleic, oleic, and palmitic acid prevailed among polyunsaturated, monounsaturated, and saturated fatty acids, respectively. Planting from 20 December to 10 January with 3.3 cold-stored bulbs per m2 was the most effective combination in terms of seed yield per hectare, whereas seed oil content and quality were the best, with the last crop cycle starting on 21 February, independent of bulb density.

Eldorado summer turnip rape

1993 ◽  
Vol 73 (1) ◽  
pp. 185-186
Author(s):  
D. F. Degenhardt ◽  
G. R. Stringam ◽  
Z. P. Kondra
Keyword(s):  
Brassica Rapa ◽  
Seed Yield ◽  
Oil Content ◽  
Seed Oil ◽  
Glucosinolate Content ◽  
Western Canada ◽  
Seed Oil Content ◽  
Turnip Rape ◽  
Cultivar Description ◽  
Canola Quality

Eldorado summer rape (Brassica rapa L.) is a canola-quality cultivar with a seed yield similar to that of Tobin. The seed oil content of Eldorado is significantly higher and its meal glucosinolate content is significantly lower than Tobin. Eldorado is well adapted to the B. rapa-growing areas of western Canada. Keywords: Turnip rape (summer), cultivar description

CORONA SUNFLOWER

1978 ◽  
Vol 58 (2) ◽  
pp. 561-563
Author(s):  
S. J. CAMPBELL ◽  
W. DEDIO
Keyword(s):  
Seed Yield ◽  
Oil Content ◽  
Plant Populations

Corona is an early, dwarf oilseed sunflower developed by the Agriculture Canada Research Stations, Saskatoon, Saskatchewan, and Morden, Manitoba. In Saskatchewan and Alberta on southern Dark Brown and Black soils, the cultivar has exceeded Krasnodarets in seed yield and oil content. The cultivar is adapted to solid seeding at plant populations of 60,000–70,000 plants/ha.

scholarly journals Multivariate Analyses of Yield and Its Components in Some Peanut Genotypes

2020 ◽  
pp. 1-15
Author(s):  
A. Abd El- Saber ◽  
Zeinab E. Ghareeb ◽  
M. A. Ahmed
Keyword(s):  
Factor Analysis ◽  
Seed Yield ◽  
Oil Content ◽  
Seed Oil ◽  
Block Design ◽  
Correlation Coefficients ◽  
Cluster Method ◽  
Factor Scores ◽  
Peanut Seed ◽  
Seed Oil Content

Aims: For proposing a statistical approach to select of the most promising genotypes for peanut breeding program. Place and Duration of Study: Twenty peanut genotypes were evaluated at Matana Agricultural Station Research, Luxor governorate, Egypt during 2018 and 2019. Study Design: In a randomized complete block design with three replications. Methodology: Analysis of variance (ANOVA), correlation coefficients, factor analysis, cluster method and some genetic parameters for seed yield and its components were calculated. Results: Results revealed that significant differences among the tested genotypes for the eight studied traits. Correlation coefficients indicated that seed yield was significantly correlated with all traits except plant height. Meanwhile, factor analysis was used to remove multi-collinearity problems, to simplify the complex relationships and to reduce variables number (into three extracted factors). 100-seed weight, number of branches/plant, 100-pod weight and seed oil content (%) with seed yield/plant traits which present in the 1st factor explained 42.039% of the total variance and recorded high heritability coupled with high genetic advance %. ANOVA results for factor scores obtained (native best multi-traits data) revealed that genotypes varied significantly. Conclusion: Factor and cluster analysis agreed in grouping Ismailia 2, Intr. 267, Intr. 182, Intr. 332 and Sohag 107 to be promising genotypes to increase peanut seed yield, whereas genotypes Intr. 504 and intr. 510 could be utilized to increase peanut seed oil content %. Then, the utilization of a factor score as a variable in ANOVA analysis was more appropriate rather than the original data. Consequently, factor scores (as a native data) would be more agreeable to selection and can be employed in plant breeding programs.

scholarly journals EVALUATION OF LATVIAN FLAX VARIETIES BY SEED YIELD AND QUALITY

2015 ◽  
Vol 1 ◽  
pp. 133
Author(s):  
Veneranda Stramkale ◽  
Aldis Stramkalis ◽  
Ļubova Komlajeva ◽  
Māra Selecka ◽  
Māra Vikmane ◽  
...  
Keyword(s):  
Seed Yield ◽  
Seed Weight ◽  
Oil Content ◽  
Seed Oil ◽  
Fatty Acid Content ◽  
Chromatography Method ◽  
Pressing Method ◽  
Fibre Flax ◽  
Yield And Quality ◽  
Weight Content

Flax cultures give dual-purpose production – flax fibre and seeds. Flax varieties adapted to local climate conditions have breeded but up to now the profound research of its quality was not carried out. In our investigation we analysed flax varieties of Latvia selection for seed yield and quality in comparison with standard varieties ‘Vega 2’ and ‘Lirina’. In Latgale Agricultural Scientific Centre 10 Latvian flax varieties are cultivated and seed yield, 1000-seed weight, seed oil content (extracted by hot pressing method) and fatty acid content in flax seed oil (detected with gas chromatography method) have evaluated. Seed yields of fibre flax Latvian varieties are significantly higher in comparison with standard variety ‘Vega’. All analysed seed samples have high oil content (27- 47%) and there is high percentage of polyunsaturated fatty acids in oil (linoleic acid 10,6-16,9%, linolenic acid 54,7-62,1%). There is little difference in 1000-seed weight, content of oil in seeds, percentage of linoleic, linolenic, oleic, palmitic and stearic acid in oil between fibre flax and oil seed flax varieties. The difference between the varieties is more influential. Flaxes seeds from Latvian varieties are in high quality and can be used for food, medical and technical purposes.

scholarly journals Yield Formation of White Lupin Lupinus albus L. on Heavy Gleyey Alluvial Soil

2011 ◽  
Vol 57 (2) ◽  
pp. 53-60
Author(s):  
Danica Šariková ◽  
Andrej Hnát ◽  
Peter Fecák
Keyword(s):  
Seed Yield ◽  
Yield Components ◽  
Block Design ◽  
Lupinus Albus ◽  
Alluvial Soil ◽  
N Fertilization ◽  
White Lupin ◽  
Seeding Rate ◽  
Plant Seed ◽  
Yield Formation

Yield Formation of White Lupin Lupinus albus L. on Heavy Gleyey Alluvial Soil Field trial with white lupin Lupinus albus L., an anti-trypsin-free French cultivar Amiga, on heavy gleyey alluvial soil of the research base in Milhostov (alt.: 101 m, avg. year temp.: 9.0°C, year precip.: 559 mm) in the trial years of 2006-2008 was performed. The influence of three seeding rates: 0.55, 0.65, 0.75 million viable seeds per ha (MVS) and three doses of N fertilization: 25, 50, 75 kg ha-1 N on seed yield and yield components such as plant number per m2, pod number per plant, seed number per plant and thousand seed weight was tested in the trial. The data of randomized complete block design trial were statistically evaluated by ANOVA and LSD method. All tested factors had highly significant (P≤0.01) influence on seed yield. Seed yield was especially influenced by weather in year (97.8% influence), followed by seeding rate with the influence of 1.8% and N fertilization with the influence of 0.3% only. The highest seed yield of 2.21 t ha-1 was under the highest seeding rate of 0.75 MVS with the difference of 0.36 t ha-1 (19.5%) in comparison with the lowest seeding rate of 0.55 MVS (1.85 t ha-1) and about 0.15 t ha-1 (10.7%) higher in comparison with the seeding rate of 0.65 MVS (2.06 t ha-1). The highest influence on seed yield had the dose of 75 kg ha-1 N. The seed yield of 2.09 t ha-1 under the treatment with the highest dose of 75 kg ha-1 N was about 0.13 t ha-1 (6.6%) higher than the yield under the treatment with the lowest dose of 25 kg ha-1 N (1.96 t ha-1). All yield components were highly significantly (P≤0.01) influenced by weather in year. Plant number per m2 was also highly significantly (P≤0.01) influenced by all tested factors.

Impact of agronomic factors on seed yield formation and quality in flax

2008 ◽  
Vol 88 (3) ◽  
pp. 485-500 ◽  
Author(s):  
G. P. Lafond ◽  
B. Irvine ◽  
A. M. Johnston ◽  
W. E. May ◽  
D. W. McAndrew ◽  
...  
Keyword(s):  
Seed Yield ◽  
Oil Content ◽  
Seed Oil ◽  
Plant Density ◽  
Oil Quality ◽  
Seeding Rate ◽  
Nitrogen Rate ◽  
Seeding Date ◽  
Rate Interaction ◽  
Yield Formation

Flaxseed is known to have significant health benefits in human nutrition and when included in animal rations. There is pressing need to improve flaxseed production to meet the growing demand. The objective was to study the effects of three seeding rates (22, 45 and 67 kg ha-1), two seeding dates (early May and late May), three rates of nitrogen (66, 100 and 133% of recommended) and three cultivars (Norlin, AC McDuff and CDC Valour) and at five locations representative of the flax-growing area of the Canadian prairies from 1999 to 2001. The variables of interest were plant density, seed yield and yield formation, seed oil content and oil quality. Plant establishment was always highest with Norlin, but bolls m-2 was similar between the three cultivars. Plant density was always highest with the later plantings. No overall effect of seeding date was observed on grain yield, but the site-year by seeding date interaction showed that the later planting was favoured by the most northerly sites and early planting at the most southerly sites. The sites intermediate in latitude showed little response to seeding date. This finding provides important information with respect to the inclusion of flax in cropping systems depending on the latitude and deciding on the order of planting. Later planting resulted in a small decrease in oil content. Seed yields were increased with seeding rates going from 22 to 45 kg ha-1, which corresponded to plant populations > 300 plants m-2, with no increases thereafter. Increases in seeding rates always reduced the number of bolls plant-1 with little effect on seeds boll-1. Seeding rate had no effect on seed oil quantity and quality and maturity. A seed yield increase was observed with nitrogen when going from 66 to 100% of the recommended rate with no increases past 100%. Adding nitrogen resulted in a small drop in seed oil content. The seeding date × nitrogen rate interaction revealed a lack of response to nitrogen with the later planting date beyond 66% of the recommended N rate, suggesting reduced nitrogen rates with later plantings are possible. The absence of a site-year by seeding date by nitrogen rate interaction implies that findings of this study can be applied to a wide geographical area. In conclusion, attention needs to be given to seeding rates to target plant density > 300 plants m-2. Even with the high seeding rates, the target plant population was achieved only 60 and 73% of the time for the early and late planting, respectively. Using soil test recommendations for nitrogen will maximize seed yields under most situations. Best agronomic practices to maximize seed yield were found to maintain adequate seed oil quality and quantity. Key words: Linum usitatissimum L., nitrogen rate, seeding rate, seeding date, cultivar

Stability some sunflower genotypes across divergent environments

Helia ◽  
2020 ◽  
Vol 43 (72) ◽  
pp. 33-49
Author(s):  
Mohamed Ali Abdelsatar ◽  
Tamer Hassan Ali Hassan ◽  
Mahrous Abd El-Baset Attia
Keyword(s):  
Seed Yield ◽  
Oil Content ◽  
Seed Oil ◽  
Agricultural Research ◽  
Block Designs ◽  
Seed Oil Content ◽  
High Performing ◽  
Important Target ◽  
Wide Range ◽  
North Sinai

AbstractSimultaneously identify superior performing in terms of seed yield and seed oil content and broad adaptation across a wide range of different environments is an important target for sunflower breeder. So, 10 sunflower genotypes were evaluated across the eight various environments created by sowing at four locations i. e. Kafr El Hamam/ Sharkia, Shandaweel /Sohag, Tag El Ezz/ Dakahlia and Al Arish/ North Sinai Agricultural Research Stations, Agricultural Research Center (ARC), Egypt during the two successive summer seasons 2018 and 2019 using randomized complete block designs with four replications in each environment. Results showed that mean squares due to environments, genotypes and their interaction were highly significant for seed yield and seed oil content. Most stability approaches revealed that high performing stable genotypes were L240 for seed yield and Sakha 53, L110 and L235 for seed oil content under divergent environments. Hence, these four stable sunflower genotypes could be behaved as good breeding materials stock for sunflower improvement.

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