Gelling agent and light effects onin vitro tuberization of potato cultivars

1992 ◽  
Vol 69 (7) ◽  
pp. 461-470 ◽  
Author(s):  
J. Nowak ◽  
S. K. Asiedu
2018 ◽  
Author(s):  
N.A. Lapshinov ◽  
А.N. Gantimurova ◽  
V.I. Kulikova ◽  
V.P. Кhodayevа

В 2016–2017 годах в коллекционном питомнике изучали 170 образцов картофеля мировой коллекции ВИР и других НИУ с целью выделения источников ценных признаков. По комплексу хозяйственно ценных признаков выделилось 7 сортов. Сорта и гибриды, выделившиеся по отдельным признакам и комплексу признаков, используют в селекционной работе как исходный материал для создания новых сортов картофеля.In 2016–2017 years the collection nursery studied 170 samples of potatoes of world collection of VIR and other research enterprises to select sources of valuable traits. The complex of economically valuable traits stood out 7 cultivars. Cultivars and hybrids released for individual signs and the complex signs used in breeding as source material for creating new potato cultivars.


Author(s):  
M. G. Markova ◽  
E. N. Somova

Work on going through the adaptation stage of rooted micro-stalks comes down to searching for new growth regulators and studying the influence of external conditions, which include, among other things, light effects. The data of 2018-2019 on the effect of growth regulators Siliplant, EcoFus and experimental LED phytoradiators on the adaptation of rooted micro-stalks of garden strawberries (Fragaria x ananassa duch) in vivo are presented. The object of research is rooted micro-stalks of garden strawberries of the Korona variety. It was revealed that, at the adaptation stage of rooted micro-stalks of strawberries, the most effective was the treatment of plants by spraying with Siliplant at a concentration of 1.0 ml/l and the combined treatment with Siliplant and EcoFus at concentrations of 0.5 ml/l: regardless of lighting, the survival rate averaged 99.4 - 99.7%, the leaf surface area increased significantly from 291.85 mm2 to 334.4 mm2. The number of normally developed leaves of strawberry microplants increased significantly after treatment with all preparations from 3.5 to 6.0, 5.8 and 6.5 pcs/plant, and a significant increase in the height of strawberry rosettes was facilitated by treatment with Siliplant and Siliplant together with EcoFus. Regardless of growth regulators, the most effective was the experimental LED phyto-irradiator with a changing spectrum, which contributed to an increase in leaf surface area, height of rosettes and the number of normally developed leaves in strawberry microplants. When illuminated with a flashing phytoradiator, these indicators are lower than in the control version, but not significantly. By the end of the rooting stage, all microplants of garden strawberries corresponded to GOST R 54051-2010.


2017 ◽  
Vol 43 (12) ◽  
pp. 1864
Author(s):  
Yan-Zhi MAO ◽  
Chun-Jie LI ◽  
Yan-Feng HU ◽  
Cui HUA ◽  
Jia YOU ◽  
...  

2019 ◽  
Vol 45 (1) ◽  
pp. 153
Author(s):  
Dan-Dan HE ◽  
Li-Guo JIA ◽  
Yong-Lin QIN ◽  
Ming-Shou FAN

2012 ◽  
Vol 41 (12) ◽  
pp. 1656-1662 ◽  
Author(s):  
Meishan Li ◽  
Gwi Yeong Jang ◽  
Sang Hoon Lee ◽  
Koan Sik Woo ◽  
Hyun Man Sin ◽  
...  

2020 ◽  
Vol 26 (26) ◽  
pp. 3147-3160
Author(s):  
Saeedeh Ahmadipour ◽  
Jaleh Varshosaz ◽  
Batool Hashemibeni ◽  
Leila Safaeian ◽  
Maziar Manshaei

Background: Polyhedral oligomeric silsesquioxane (POSS) is a monomer with silicon structure and an internal nanometric cage. Objective: The purpose of this study was to provide an injectable hydrogel that could be easily located in open or closed bone fractures and injuries, and also to reduce the possible risks of infections caused by bone graft either as an allograft or an autograft. Methods: Various formulations of temperature sensitive hydrogels containing hydroxyapatite, Gelrite, POSS and platelets rich plasma (PRP), such as the co-gelling agent and cell growth enhancer, were prepared. The hydrogels were characterized for their injectability, gelation time, phase transition temperature and viscosity. Other physical properties of the optimized formulation including compressive stress, compressive strain and Young’s modulus as mechanical properties, as well as storage and loss modulus, swelling ratio, biodegradation behavior and cell toxicity as rheometrical parameters were studied on human osteoblast MG-63 cells. Alizarin red tests were conducted to study the qualitative and quantitative osteogenic capability of the designed scaffold, and the cell adhesion to the scaffold was visualized by scanning electron microscopy. Results: The results demonstrated that the hydrogel scaffold mechanical force and injectability were 3.34±0.44 Mpa and 12.57 N, respectively. Moreover, the scaffold showed higher calcium granules production in alizarin red staining compared to the control group. The proliferation of the cells in G4.5H1P0.03PRP10 formulation was significantly higher than in other formulations (p<0.05). Conclusion: The optimized Gelrite/Hydroxyapatite/POSS/PRP hydrogel scaffold has useful impacts on osteoblasts activity, and may be beneficial for local drug delivery in complications including a break or bone loss.


2020 ◽  
Vol 21 (15) ◽  
pp. 1699-1710
Author(s):  
Sonsawan Kongpuckdee ◽  
Suwipa Ungphaiboon ◽  
Supreedee Sungkharak ◽  
Narubodee Phadoongsombut ◽  
Sirima Mahattanadul

Background: Oral inflammatory ulcers are one of the common complaints of patients attending out-patient clinics. Previous in vivo studies had shown that an Aqueous M. citrifolia Fruit Extract (AMFE) possessed anti-inflammatory and ulcer healing activities. Therefore, a standardized topical bioadhesive gel containing AMFE-phytosome was developed and determined for its oral ulcer healing efficacy in a rabbit model. Methods: The AMFE phytosome (AMFE-P) was prepared by a complexation method with the required amount of AMFE: Phosphatidylcholine: Tween 80 to weigh ratio of 2:1:0.2. Poloxamer 407 was used as a gelling agent. The oral ulcer was induced in male New Zealand white rabbits by topical application of acetic acid. Each test compound was applied to the ulcer for 10 days beginning on the second day after the ulcer induction. Complete ulcer healing on the specimen obtained on day 12 was observed histologically using the histological scoring protocol. Results: The optimized gel containing AMFE-P equivalent to AMFE 10%w/w (10%AMFE-P gel) showed the best bioadhesive gel quality, a smooth and homogeneous texture with an optimum viscosity and pH range used in human oral cavity, a good physical and chemical stability and the highest percentage cumulative release of total phenolic and scopoletin content. It was found that a daily application of 10% AMFE-P gel exerted a superior ulcer healing efficacy and a significantly rapid ulcer healing process than a twice daily application of topical gel containing AMFE 10%w/w or chlorhexidine 0.2%. Conclusion: These findings demonstrated that 10% AMFE-P gel has potential as a safe and effective alternative therapeutic agent for oral ulcers.


Sign in / Sign up

Export Citation Format

Share Document