SUNFLOWER PERFORMANCE AS RELATED TO SOURCE OF SEED AND ADVANCING GENERATIONS

1978 ◽  
Vol 58 (2) ◽  
pp. 445-448
Author(s):  
WALTER DEDIO
Keyword(s):  
Helianthus Annuus ◽  
Oil Content ◽  
Field Performance ◽  
Helianthus Annuus L ◽  
Seed Characteristics

Field performance of two sources and several generations of Krasnodarets sunflower (Helianthus annuus L.) was compared for 2 yr. The two sources of seed produced achenes that were significantly different in achene characteristics and oil content. There were no consistent significant differences in plant and seed characteristics with advancing generations, but there was a slight trend toward later maturity and taller plants.

scholarly journals GENETIC DIVERSITY IN NON-OILSEED SUNFLOWER (Helianthus annuus L.) GENOTYPES / DIVERSIDAD GENETICA DE GENOTIPOS NO OLEAGINOSOS DEL GIRASOL (Helianthus annuus L.) / DIVERSITÉ GÉNÉTIQUE DANS LES GÉNOTYPES DE TOURNESOL NON-OLÉAGINEUX (Helianthus annuus L.)

Helia ◽  
2001 ◽  
Vol 24 (34) ◽  
pp. 17-24
Author(s):  
K. Manjula ◽  
H.L. Nadaf ◽  
K. Giriraj
Keyword(s):  
Genetic Diversity ◽  
Protein Content ◽  
Helianthus Annuus ◽  
Plant Height ◽  
Genetic Divergence ◽  
Oil Content ◽  
Diversité Génétique ◽  
Helianthus Annuus L ◽  
Volume Weight ◽  
Seed Characteristics

SUMMARYGenetic diversity was assessed in 46 non-oilseed sunflower genotypes for 14 characters by adopting D2 analysis. Oil content and plant height exhibited maximum contributions towards genetic divergence. The genotypes were grouped into 11 clusters. The inter-cluster D2 values ranged from 288.17 to 3972.34. The contribution of oil content towards genetic divergence in the 46 genotypes was confirmed when D2 analysis was performed for seed characteristics such as test weight, volume weight, hull content, kernel recovery, oil and protein content.

HETEROSIS, COMBINING ABILITY, AND PREDICTED SYNTHETICS FROM A DIALLEL CROSS IN SUNFLOWERS (HELIANTHUS ANNUUS L.)

1966 ◽  
Vol 46 (1) ◽  
pp. 59-67 ◽  
Author(s):  
Eric D. Putt
Keyword(s):  
Helianthus Annuus ◽  
Combining Ability ◽  
Oil Content ◽  
Diallel Cross ◽  
General Combining Ability ◽  
Specific Combining Ability ◽  
Helianthus Annuus L ◽  
The Mean ◽  
Seed Characters ◽  
Mature Weight

Heterosis occurred for the eight plant and seed characters studied. It was most frequent for yield of seed and height of plant. Mean squares for general combining ability (gca) and specific combining ability (sca) were significant (P =.01) for all characters. The estimated components for gca were greater than for sca for days to mature, weight per bushel, and percent oil in the seed; less for height and yield of seed; and essentially the same for days to bloom, diameter of head, and weight per 1000 seeds.The yield of seed and percent oil in the seed, for the highest ranking 100 synthetics that could be composed from the 10 lines, was predicted in F6 assuming 50 and 60% outcrossing between F2 and F6. Virtually all values exceeded the mean performance of four check samples of commercial hybrids. Many exceeded the highest rank check for oil content in the seed. Fourteen of the highest ranking 100 synthetics for yield and 30 for oil content consisted of two or three lines. It was concluded that synthetics can be superior to the present hybrids in heterosis and that desirable synthetics can be made from only a few lines.

Dwarf sunflower response to row spacing, stand reduction, and defoliation at different growth stages

2003 ◽  
Vol 83 (2) ◽  
pp. 319-326 ◽  
Author(s):  
B. L. Johnson
Keyword(s):  
Helianthus Annuus ◽  
Oil Content ◽  
Growth Stage ◽  
Total Yield ◽  
Reciprocal Relationship ◽  
Yield Response ◽  
Yield Reduction ◽  
Row Spacing ◽  
Growth Stages ◽  
Helianthus Annuus L

Growth compensation of dwarf sunflower (Helianthus annuus L.) hybrids to low initial stands, later stand losses, or plant defoliation has not been reported regarding replanting decisions and crop insurance yield loss assessment. Three experiments were conducted to study the affect of stand reduction, defoliation, and row spacing on dwarf sunflower yield and quality when grown in eastern North Dakota. Experiment 1 evaluated stand reduction (0, 25, 50 and 75%) applied at growth stages (V4, R1 and R6) in 15, 45 and 76 cm spaced rows. Row spacing interactions with stand reduction and growth stage were not significant for yield indicating growth stage and stand reduction effects on yield response were independent of row spacing. In exp. 2, significant growth stage (V4, V8, R1, R2, R3, R5 and R6) by stand reduction (0, 12, 25, 37, 50, 62 and 75%) interaction showed stand reduction at vegetative growth stages not influencing yield, but as maturity progressed yield reductions became greater with increased stand reduction. Achene weight increased with increasing stand reduction at vegetative and early reproductive stages. A reciprocal relationship was noted between achene weight and achene oil content where oil content decreased as achene weight increased. Interaction of growth stage (R1 and R6) and defoliation (0, 25, 50, 75 and 100%) in exp. 3 indicated greater reduction in yield, test weight, 1000-achene weight, and achene oil conte nt as defoliatin increased at growth stage R6. Yield compensating ability of dwarf sunflower is dependent on type and level of damage and growth stage of occurrence, with total yield reduction considering all effects. Key words: Sunflower, Helianthus annuus L., row spacing, stand reduction, defoliation

Gene Action in the Expression of Achene Yield and Oil Content in Sunflower (Helianthus annuus L.)

2005 ◽  
Vol 8 (11) ◽  
pp. 1517-1520
Author(s):  
Masood Jan . ◽  
Farhatullah . ◽  
Muhammad Tariq Jan . ◽  
Ghulam Hassan . ◽  
Raziudin .
Keyword(s):  
Helianthus Annuus ◽  
Oil Content ◽  
Gene Action ◽  
Helianthus Annuus L

EFFECT OF PLANT DENSITY ON THE AGRONOMIC PERFORMANCE OF SUNFLOWER ON DRYLAND

1984 ◽  
Vol 64 (3) ◽  
pp. 599-605 ◽  
Author(s):  
N. W. HOLT ◽  
S. J. CAMPBELL
Keyword(s):  
Helianthus Annuus ◽  
Seed Weight ◽  
Oil Content ◽  
Seed Oil ◽  
Plant Density ◽  
Agronomic Traits ◽  
Agronomic Performance ◽  
Head Diameter ◽  
Helianthus Annuus L ◽  
Days To Maturity

This study investigated the influence of plant density on several agronomic traits of four sunflower (Helianthus annuus L.) cultivars grown at Indian Head and Saskatoon, Saskatchewan in the semiarid prairies. At populations of 40 000–85 000 plants∙ha−1, plant density had no significant effect on seed yield. The increase in percentage oil content with increase in plant density (44.3–45.6%) was small but significant. As plant density was increased, days to flower, height and test weight increased while days to maturity, head diameter and average seed weight decreased. Cultivars × density interactions were generally not significant. Environment (five location-years) had a significant effect on all variables, and environments × cultivar interactions were significant for most of these. Results of this experiment indicated that testing of sunflower lines at several locations in the growing area would be necessary for best assessment but one plant density, suitable to that area, could be used.Key words: Sunflower, plant density, seed, oil, seed size, Helianthus annuus L.

Magnitude of Heterosis for Achene Yield and Oil Content in Sunflower (Helianthus annuus L.)

2005 ◽  
Vol 8 (11) ◽  
pp. 1557-1560
Author(s):  
Masood Jan . ◽  
Farhatullah . ◽  
Ijaz Begum . ◽  
Ghulam Hassan . ◽  
Iftikhar Khalil .
Keyword(s):  
Helianthus Annuus ◽  
Oil Content ◽  
Helianthus Annuus L

Performance comparison of single and three-way crosses in sunflower

1992 ◽  
Vol 72 (2) ◽  
pp. 431-434
Author(s):  
W. Dedio
Keyword(s):  
Helianthus Annuus ◽  
Oil Content ◽  
Performance Comparison ◽  
Helianthus Annuus L ◽  
Coefficient Of Variability ◽  
The Difference

Single and three-way crosses of sunflower (Helianthus annuus L.) hybrids were compared for yield and oil content by testing two groups of hybrids for 2 years. In the first group, the difference in yield and oil content between the two types was not significant, and in the second group the difference in yield was not significant. The oil content of the single crosses in the second group was 7 g kg−1 higher. The coefficient of variability for yield was similar in the two types of hybrids in both groups, indicating no difference in stability.Key words: Sunflower, Helianthus annuus L., single crosses, three-way crosses, oil content, achene yield

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