scholarly journals Warm stratification improves embryos development and seed germination of Cycas revoluta

2021 ◽  
Vol 35 (1) ◽  
Author(s):  
Jalila Benjelloun ◽  
Sarah Bouzroud ◽  
Zine El Abidine Triqui ◽  
Qamar Lahlimi Alami ◽  
Rajaa Layachi ◽  
...  
Keyword(s):  
Seed Germination ◽  
Beneficial Effect ◽  
Plant Development ◽  
Root Length ◽  
Room Temperature ◽  
New Method ◽  
Zygotic Embryos ◽  
Broad Objective ◽  
Cycas Revoluta ◽  
Improve Seed Germination

The broad objective of this research is to study the effect of warm stratification on Cycas revoluta zygotic embryos length, seed germination and plant development. Four warm treatments were applied to seeds. Our results showed that seeds storage at room temperature or 30°C improved significantly zygotic embryos length. Moreover, time of germination was significantly reduced with the warm stratification. The highest percentage of germination was obtained with seeds warm treated at 30°C for 2 months while only 25% of seeds were able to germinate in the control. Regarding seedlings development, our results demonstrated that warm stratification did not affect plant development. No significant differences have been recorded in all the evaluated parameters except for root length. Taken together, these results underlined the beneficial effect of warm stratification on Cycas revoluta seed germination and plant development and proposed a new method to improve seed germination of Cycas revoluta.

scholarly journals Fungicidal seed treatment on germination and seedling vigour of lentil var. BINA Masur-3

2017 ◽  
Vol 3 (1) ◽  
pp. 140-144
Author(s):  
A Rokib ◽  
MS Monjil
Keyword(s):  
Seed Germination ◽  
Root Length ◽  
Seed Treatment ◽  
Shoot Length ◽  
Seedling Vigour ◽  
Green House ◽  
Seed Pathology ◽  
Vigour Index ◽  
Positive Effect ◽  
Improve Seed Germination

Effectiveness of six fungicides viz., Provax-200 (Carboxin+Thiram), Bavistin DF (Carbendazim), Dithane M-45 (Mancozeb), Secure (Mancozeb+Fenamidone), Antracol (propineb) and Daconil (Chlorothalonil) were evaluated to improve seed germination and seedling vigour of lentil variety BINA Masur-3. The experiment was conducted in the Green House of Seed Pathology Centre, Bangladesh Agricultural University, Mymensingh. Positive effect of seed treatment with fungicides on seed germination and seedling vigour of lentil was recorded. At 20 DAS, increased seed germination over control was observed in treated seeds with Deconil (10.40%) and Antracol (10.00%) followed by Dithane M-45 (7.20%). Seeds treated with Deconil and Dithane M-45 produced seedlings with higher shoot length, root length and seedling vigour. At 20 DAS, higher percent increased vigour index over control was found in Dithane M-45 (24.64%) and Deconil (22.44%), respectively.Asian J. Med. Biol. Res. March 2017, 3(1): 140-144

scholarly journals Seed Germination of Cyeas revoluta

1987 ◽  
Vol 5 (3) ◽  
pp. 105-106 ◽  
Author(s):  
John J. Frett
Keyword(s):  
Sulfuric Acid ◽  
Seed Germination ◽  
Gibberellic Acid ◽  
Room Temperature ◽  
Seed Treatments ◽  
Percent Germination ◽  
Concentrated Sulfuric Acid ◽  
Cycas Revoluta

Cycas revoluta seeds commonly take from a few months to a year or more to germinate and germination percentages are normally quite low. In an effort to improve germination, several seed treatments were tested. Seeds germinated better in dark than in the light. Removal of the pulp from seeds increased percent germination as compared to seeds with the pulp intact. Treatment of seeds or 0.5, 1.0, 1.5 or 2 hr with concentrated sulfuric acid increased seed germination. The application of gibberellic acid at concentrations of 500, 1000 or 5000 ppm did not affect germination as compared to controls. Seeds stored at room temperature for 6 months germinated more readily than seeds planted immediately. It is suggested that seeds stored at room temperature and scarified with concentrated sulfuric acid for 1 hr will exhibit improved germination.

scholarly journals Non-TZF Protein AtC3H59/ZFWD3 Is Involved in Seed Germination, Seedling Development, and Seed Development, Interacting with PPPDE Family Protein Desi1 in Arabidopsis

2021 ◽  
Vol 22 (9) ◽  
pp. 4738
Author(s):  
Hye-Yeon Seok ◽  
Hyungjoon Bae ◽  
Taehyoung Kim ◽  
Syed Muhammad Muntazir Mehdi ◽  
Linh Vu Nguyen ◽  
...  
Keyword(s):  
Seed Germination ◽  
Seed Development ◽  
Zinc Finger ◽  
Root Length ◽  
Primary Root ◽  
Seedling Development ◽  
Ccch Zinc Finger ◽  
Family Protein ◽  
Wd40 Domain ◽  
Primary Root Length

Despite increasing reports on the function of CCCH zinc finger proteins in plant development and stress response, the functions and molecular aspects of many non-tandem CCCH zinc finger (non-TZF) proteins remain uncharacterized. AtC3H59/ZFWD3 is an Arabidopsis non-TZF protein and belongs to the ZFWD subfamily harboring a CCCH zinc finger motif and a WD40 domain. In this study, we characterized the biological and molecular functions of AtC3H59, which is subcellularly localized in the nucleus. The seeds of AtC3H59-overexpressing transgenic plants (OXs) germinated faster than those of wild type (WT), whereas atc3h59 mutant seeds germinated slower than WT seeds. AtC3H59 OX seedlings were larger and heavier than WT seedlings, whereas atc3h59 mutant seedlings were smaller and lighter than WT seedlings. Moreover, AtC3H59 OX seedlings had longer primary root length than WT seedlings, whereas atc3h59 mutant seedlings had shorter primary root length than WT seedlings, owing to altered cell division activity in the root meristem. During seed development, AtC3H59 OXs formed larger and heavier seeds than WT. Using yeast two-hybrid screening, we isolated Desi1, a PPPDE family protein, as an interacting partner of AtC3H59. AtC3H59 and Desi1 interacted via their WD40 domain and C-terminal region, respectively, in the nucleus. Taken together, our results indicate that AtC3H59 has pleiotropic effects on seed germination, seedling development, and seed development, and interacts with Desi1 in the nucleus via its entire WD40 domain. To our knowledge, this is the first report to describe the biological functions of the ZFWD protein and Desi1 in Arabidopsis.

Cholinium-amino acid based ionic liquids: a new method of synthesis and physico-chemical characterization

2015 ◽  
Vol 17 (32) ◽  
pp. 20687-20698 ◽  
Author(s):  
Serena De Santis ◽  
Giancarlo Masci ◽  
Francesco Casciotta ◽  
Ruggero Caminiti ◽  
Eleonora Scarpellini ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Amino Acid ◽  
Room Temperature ◽  
Chemical Characterization ◽  
New Method ◽  
Room Temperature Ionic Liquids ◽  
Synthetic Method ◽  
Chemical Structures ◽  
Physico Chemical ◽  
Wide Range

Fourteen cholinium-amino acid based room temperature ionic liquids were prepared using a cleaner synthetic method. Chemicophysical properties were well correlated with the wide range of amino acid chemical structures.

Allelopathic Potency and an Active Substance from Hairy Vetch

2020 ◽  
Author(s):  
Weihong Sun ◽  
Guofeng Yang ◽  
Lili Cong ◽  
Juan Sun ◽  
Lichao Ma
Keyword(s):  
Seed Germination ◽  
Seedling Growth ◽  
Root Length ◽  
Leaf Extract ◽  
Growth Inhibitor ◽  
Inhibitory Effect ◽  
Allelopathic Effect ◽  
Coumaric Acid ◽  
Hairy Vetch ◽  
Allelopathic Effects

Background: Plant allelopathy refers to the release of chemicals from plants or microorganisms into the environment, may have direct or indirect, beneficial or harmful effects on other plants or microorganisms. When plants grow in an unfavorable environment,more allelochemicals will be secreted and the expression of allelopathic effects will increase, giving plants a certain competitive advantage. Hairy vetch is one of the most promising allelopathic crops and the aqueous extract of hairy vetch has an inhibitory effect on the root length and seedling height of grass crops. The current study aimed to study the allelopathic effect of hairy vetch on alfalfa, and exploring an ecological method to remove the root system of alfalfa.Methods: In this experiment, the allelopathic effects of the seeds, stems and leaves, roots extracts and root exudates (0, 3, 6, 9 and 12 mg·mL-1) on the seed germination and seedling growth of alfalfa were evaluated. And the main allelopathic substances from the stem and leaf extract were isolated and identified using high performance liquid chromatography- mass spectrometry (HPLC-MS).Result: The results showed that all of the extracts can inhibit alfalfa seed germination and seedling growth and stem and leaf extract had the strongest inhibitory effect, especially for inhibiting the root growth. A main allelochemical substance, o-coumaric acid, was screened out and the root length of alfalfa was completely inhibited at 1.6 mg·mL-1 of o-coumaric acid. The findings of these experiments show hairy vetch has strong allelopathic effect on alfalfa and o-coumaric acid is a chemical growth inhibitor.

A Novel and Efficient Alkoxylselenenylation of Alkenes

2019 ◽  
Vol 41 (6) ◽  
pp. 1039-1039
Author(s):  
Yingguo Fang and Jie Yan Yingguo Fang and Jie Yan
Keyword(s):  
Room Temperature ◽  
Electrophilic Addition ◽  
New Method ◽  
Reaction Conditions ◽  
Selenium Species

A novel and efficient alkoxylselenenylation from alkenes, diselenides, and alcohols mediated by iodine is developed, with which a series of β-alkoxy selenides are synthesized. In this procedure, firstly, I2 reacts with diselenide to form in situ the active electrophilic selenium species RSeI, then following an electrophilic addition of it to alkenes provides β-alkoxy selenides with high regioselectivity and in good yields. This new method for achieving β-alkoxy selenides has some advantages over other methods such as using available and cheap iodine as the oxidizing species at room temperature, which makes this reaction has milder reaction conditions and simpler procedure.

Effect of Composting, Leaching and Carbonizing on Alleviating Phytotoxicity of Sewage Sludge

2012 ◽  
Vol 518-523 ◽  
pp. 1733-1736
Author(s):  
Hong Cai ◽  
Yi Bo Wen ◽  
Ji Li
Keyword(s):  
Seed Germination ◽  
Sewage Sludge ◽  
Adverse Effects ◽  
Root Length ◽  
Germination Rate ◽  
Germination Index ◽  
Pretreatment Method

Sewage sludge (SS) contains deleterious constituents that strongly inhibited seed germination. Pretreatment methods of composting, leaching and carbonizing were thus evaluated to alleviate the phytotoxicity. All the pretreatments improved germination rate, root length and germination index of radish seeds. The best performances were presented by composting pretreatment and the pretreatment of carbonizing plus leaching. Composting greatly alleviated phytotoxicity of SS and improved seed germination, however, it also showed stunted root length and germination index compared with the soil control. The adverse effects of composted SS on seed germination were completely eliminated by leaching, while carbonizing had little effect on reversing the stunt. These results indicated that the most effective pretreatment method to alleviate phytotoxicity of SS were composting plus leaching.

Sign in / Sign up

Export Citation Format

Share Document