Population differentiation for germination and early seedling root growth traits under saline conditions in the annual legumeMedicago truncatula(Fabaceae)

2014 ◽  
Vol 101 (3) ◽  
pp. 488-498 ◽  
Author(s):  
Matilde A. Cordeiro ◽  
Ken S. Moriuchi ◽  
Tonya D. Fotinos ◽  
Kelsey E. Miller ◽  
Sergey V. Nuzhdin ◽  
...  
Keyword(s):  
Root Growth ◽  
Population Differentiation ◽  
Growth Traits ◽  
Seedling Root ◽  
Early Seedling

scholarly journals Maize seedling performance as a potential index for drought tolerance

2018 ◽  
Vol 70 (1) ◽  
pp. 167-177
Author(s):  
Natalija Kravic ◽  
Sukalovic Hadzi-Taskovic ◽  
Vojka Babic ◽  
Jelena Srdic ◽  
Jelena Mesarovic ◽  
...  
Keyword(s):  
Drought Tolerance ◽  
Osmotic Stress ◽  
Root Growth ◽  
Grain Yield ◽  
Maize Seedling ◽  
Proline Content ◽  
Seedling Root ◽  
Early Seedling ◽  
Positive Correlations ◽  
Adult Plants

Twenty-six maize landraces were tested in order to evaluate maize seedling performance as an index for drought tolerance in adult plants. Samples were subjected to polyethylene glycol-induced osmotic stress at the early seedling stage. Grain yield was obtained in field experiments under well-watered (OC) and a combination of drought and high plant density (HD) conditions. Osmotic stress caused a reduction in seedling growth (length, fresh and dry weight), and increase in the shoot and in particular the root proline contents in the majority of landraces, and variations in root peroxidase (POD) activity. Genotypes displaying more pronounced root growth reduction and higher proline contents exhibited decreased POD activity under osmotic stress. Direct positive correlations between the proline content and growth inhibition, and between the proline and soluble protein content were established. Correlations between the changes in POD activity and growth parameters were significant and positive, and significant but negative with the changes in the proline content. In the field, water stress led to a reduction in grain yield in all of the tested landraces. Correlations between grain yield from both experimental sets (OC and HD) and osmotic-induced changes in seedling root growth were negative, which was opposite to the highly significant and positive correlations between the changes in the seedling root proline content and yield. Also, genotypes with the highest seedling root proline content increase under osmotic stress, exhibited the highest stress tolerance index (STI) based on grain yield achieved under both field conditions. Our results indicate that lower changes in POD activity and especially an increased proline content after exposure to osmotic stress during the early seedling stage could be considered as useful indices to facilitate selection efficiency for drought tolerance in adult plants.

scholarly journals Effect of biostimulants on soybean seedlings

2020 ◽  
Vol 25 (50) ◽  
pp. 99-104
Author(s):  
Gorica Cvijanović ◽  
Ninoslav Čolić ◽  
Nenad Đurić ◽  
Gordana Dozet ◽  
Abduladim Eltreki ◽  
...  
Keyword(s):  
Root Growth ◽  
Morphological Characteristics ◽  
Vegetable Crops ◽  
Single Application ◽  
Soybean Seedling ◽  
Soybean Seedlings ◽  
Seedling Root ◽  
Novi Sad

The aim of this study was to analyze the effect of biostimulants on the morphological characteristics of soybean seedlings. The testing was conducted in the laboratory of the Faculty of Biofarming in Bačka Topola. The experimental material included three soybean varieties ('Galina', 'Sava' and 'Rubin') selected at the Institute of Field and Vegetable Crops in Novi Sad. The study lasted for two years, 2015-2016, and identical biostimulant treatments were applied in both years. In order to determine the effect of biostimulants on soybean seedling root, hypocotyl and weight, the following commercial biostimulants were applied: EM Aktiv, Terra Green Hobby, Slavol and Bioplant Flora. In addition to the single application of biostimulants, two combinations of Slavol + Bioplant Flora and Slavol + Bioplant Flora + Epin Extra + Slavol S were used as treatments. EM Aktiv showed the greatest effect on root growth. The root was on average 12% longer than the control. Slavol S had the greatest influence on seedling hypocotyl and weight. The increase was 8.24% and 5.15%, respectively, compared with the control.

Soil physical conditions affecting seedling root growth

1972 ◽  
Vol 37 (1) ◽  
pp. 151-158 ◽  
Author(s):  
B. W. Eavis
Keyword(s):  
Root Growth ◽  
Physical Conditions ◽  
Seedling Root

scholarly journals The histone deacetylase OsHDAC1 epigenetically regulates theOsNAC6gene that controls seedling root growth in rice

2009 ◽  
Vol 59 (5) ◽  
pp. 764-776 ◽  
Author(s):  
Pil Joong Chung ◽  
Yeon Shic Kim ◽  
Jin Seo Jeong ◽  
Su-Hyun Park ◽  
Baek Hie Nahm ◽  
...  
Keyword(s):  
Root Growth ◽  
Histone Deacetylase ◽  
Seedling Root

scholarly journals The effects of dwarfing genes on seedling root growth of wheat

2009 ◽  
Vol 60 (9) ◽  
pp. 2565-2573 ◽  
Author(s):  
T. Wojciechowski ◽  
M.J. Gooding ◽  
L. Ramsay ◽  
P.J. Gregory
Keyword(s):  
Root Growth ◽  
Dwarfing Genes ◽  
Seedling Root

In vitro and in vivo bio-stimulatory properties of a Lupinus albus L. seed suspension

2011 ◽  
Vol 62 (3) ◽  
pp. 189 ◽  
Author(s):  
Elmarie van der Watt ◽  
Johan C. Pretorius
Keyword(s):  
Root Growth ◽  
Respiration Rate ◽  
Seedling Growth ◽  
Lupinus Albus ◽  
Positive Control ◽  
Seedling Root ◽  
Stimulatory Activity ◽  
Lupinus Albus L

During an extended screening program of plant extracts for bio-stimulatory activity, a seed suspension (SS) of Lupinus albus L. cv. Betsuhana White was identified as most promising. By testing a concentration range of SS using three in vitro bio-assays [i.e. respiration rate of monoculture yeast (Saccharomyces cerevisiae) cells, germination rate of seeds from selected crops, and subsequent seedling growth], 5 mg/L was identified as the optimal concentration in terms of in vitro bio-stimulatory activity. A commercially available bio-stimulant, ComCat®, was used as a positive control, while a glucose solution for respiration tests and distilled water for germination tests served as negative controls. Compared with the controls, significant (P < 0.05) increases in the respiration rate of monoculture yeast cells and seedling root growth in the majority of test crops after treatment with SS confirmed its in vitro bio-stimulatory potential. Seedling root growth compared favourably with results obtained with the commercial bio-stimulant. Subsequently, the in vivo yield response of selected crops to foliar treatment with SS was investigated under field conditions using ComCat® as a positive control. All trials were laid out in a complete randomised block design. Foliar applications of SS at 5 mg/L under a drip irrigation system contributed to significant (P < 0.05) yield increases in lettuce (by 20.0 t/ha) and carrots (by 22.2 t/ha), which compared favourably with the positive control, but not in beetroot and cabbage. Beetroot yield was enhanced whereas cabbage yield was decreased markedly, but not significantly, by the SS treatment, compared with the negative control. The results confirmed both the in vitro and in vivo bio-stimulatory potential of a seed suspension of L. albus cv. Betsuhana White in terms of its ability to manipulate early seedling growth and enhance the yield of selected vegetable crops.

Soil physical conditions affecting seedling root growth

1972 ◽  
Vol 36 (1-3) ◽  
pp. 623-634 ◽  
Author(s):  
B. C. Warnaars ◽  
B. W. Eavis
Keyword(s):  
Root Growth ◽  
Physical Conditions ◽  
Seedling Root
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