scholarly journals Effect of Irrigation with Contaminated Water by Cloth Detergent on Seed Germination Traits and Early Growth of Sunflower (Helianthus annuus L.)

2013 ◽  
Vol 5 (1) ◽  
pp. 86-89 ◽  
Author(s):  
Hassan HEIDARI
Keyword(s):  
Seed Germination ◽  
Helianthus Annuus ◽  
Early Growth ◽  
Seed Vigor ◽  
Contaminated Water ◽  
Total Biomass ◽  
High Concentration ◽  
Helianthus Annuus L ◽  
Household Cleaning Products ◽  
Germination Traits

One of the sources for irrigation is sewage. Contaminated water may affect seed germination and plant growth. A laboratory experiment and a pot experiment were conducted in 2012 to determine the effect of different doses of detergent on seed germination traits and early growth of sunflower (Helianthus annuus L.). The experiments included eight doses of cloth detergent (0, 0.00002, 0.0002, 0.002, 0.02, 0.2, 2, 20 g/L). Results showed that 20 and 2 g/L of detergent severely reduced seed germination, plant height, leaf number per plant, total biomass and stem weight. 20 g/L of detergent reduced shoot length, root length, seedling weight and seed vigor. Seed germination stage was more sensitive to contaminated water than early growth stage. The results demonstrated that irrigating sunflower by contaminated water with household cleaning products at high concentration should be avoided.

scholarly journals TEMPERATURE - GERMINATION RESPONSES OF SUNFLOWER (Helianthus annuus L.) GENOTYPES / GERMINACION COMO REACCION A LA TEMPERATURA EN LOS GENOTIPOS DEL GIRASOL (Helianthus annuus L.) / GERMINATION - RÉACTION À LA TEMPÉRATURE DANS LES GÉNOTYPES DE TOURNESOL (Helianthus annuus L.)

Helia ◽  
2000 ◽  
Vol 23 (33) ◽  
pp. 97-104
Author(s):  
F.M. Khalifa ◽  
A.A. Schneiter ◽  
E.I. El Tayeb
Keyword(s):  
Seed Germination ◽  
Helianthus Annuus ◽  
Maximum Rate ◽  
Germination Rate ◽  
Thermal Time ◽  
Large Temperature ◽  
Climatic Zones ◽  
Helianthus Annuus L ◽  
Wide Range ◽  
Cardinal Temperature

SUMMARY Seed germination of six sunflower (Helianthus annuus L.) hybrids was investigated across a range of eleven constant temperatures between 5°C and 45°C. Large temperature differences in germination rate 1/t (d-1), cardinal temperature (°C) and thermal time θ (°cd) were observed among hybrids. Base temperatures (Tb) varied between 3.3°C and 6.7°C whereas maximum germination temperatures (Tm) varied between 41.7°C and 48.9°C. Final germination fraction was attained at 15°C - 25°C whereas the maximum rate of germination was attained at 30.4°C - 35.6°C. The maximum germination rate of hybrid USDA 894, the cultivar with the slowest germination rate, was only 50% of that of hybrid EX 47. The low Tb and high Tm of sunflower appear to be one of the factors which explain the successful adaptation of sunflower to a wide range of temperature. These findings are discussed in relation to the origin of the crop and its wide adaptations in diverse habitats and climatic zones.

scholarly journals Seed Germination and Physiological Response of Sunflower (Helianthus annuus L.) Cultivars under Saline Conditions

2018 ◽  
Vol 75 (1) ◽  
pp. 4
Author(s):  
Carmen BEINSAN ◽  
Renata SUMALAN ◽  
Giancarla VELICEVICI ◽  
Adriana CIULCA ◽  
Radu SUMALAN
Keyword(s):  
Seed Germination ◽  
Helianthus Annuus ◽  
Dry Matter ◽  
Saline Stress ◽  
Free Proline ◽  
Radicle Growth ◽  
Helianthus Annuus L ◽  
Control Seed ◽  
Germination Process

The purpose of the experiment was to highlight the germination of sunflower seeds affected by the presence of saline stress and the identification of tolerant genotypes. The biological material was represented by sunflower cvs. (Helianthus annuus L.): Coril, Select, Santiago and Fundulea-206. To simulate the saline conditions, germination solutions of sodium chloride (NaCl) were used with concentrations corresponding to the osmotic pressures -6 and -10 atm and the control seed hydration was performed with distilled water. Determination of seed germination, growth of seedling, percentage of plumules dry matter, chlorophyll content and free proline were performed. The experimental data obtained suppose the existence in the assimilation apparatus of sunflowers seedling subjected to stress a competitive chlorophyll/free proline biosynthesis processes. The experimental results regarding the effect of salinity on seed germination and seedling growth revealed important differences between genotypes. The radicle growth in the germination process were strongly affected by saline excess, with significant differences between cultivars. Saline stress results in significant reductions in the amount of chlorophyll, and high levels of free proline. It can be observed that with the increase of the stress level the percentage of the dry matter increases, indicating an accentuated water deficit.

scholarly journals A Salt Tolerance Evaluation Method for Sunflower (Helianthus annuus L.) at the Seed Germination Stage

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Wenhui Li ◽  
Huizhen Zhang ◽  
Youling Zeng ◽  
Lijun Xiang ◽  
Zhonghua Lei ◽  
...  
Keyword(s):  
Salt Tolerance ◽  
Seed Germination ◽  
Helianthus Annuus ◽  
Evaluation Method ◽  
Helianthus Annuus L ◽  
Germination Stage

The effects of seed priming with sodium hydrosulphide on drought tolerance of sunflower ( Helianthus annuus L.) in germination and early growth

2020 ◽  
Author(s):  
Dijana Ocvirk ◽  
Marija Špoljarević ◽  
Marija Kristić ◽  
John T. Hancock ◽  
Tihana Teklić ◽  
...  
Keyword(s):  
Drought Tolerance ◽  
Helianthus Annuus ◽  
Seed Priming ◽  
Early Growth ◽  
Helianthus Annuus L

Use of immature seed germination technique as an alternative to in vitro culture of sunflower (Helianthus annuus L.) embryos

Euphytica ◽  
1996 ◽  
Vol 91 (1) ◽  
pp. 1-3 ◽  
Author(s):  
Adriana Torresán ◽  
Juan Kesteloot ◽  
Fernando Castaño ◽  
Raúl Rodríguez ◽  
Mabel Colabelli
Keyword(s):  
Seed Germination ◽  
In Vitro Culture ◽  
Helianthus Annuus ◽  
Immature Seed ◽  
Helianthus Annuus L
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