Osmolyte-induced water deficit stress mitigation during panicle initiation stage in transplanted rice (Oryza sativa L.)

A field experiment was conducted to observe the osmolyte-induced water deficit stress mitigation during the panicle initiation stage in transplanted rice (Oryza sativa L. cv. BRRI dhan72). At the panicle initiation stage, plants were simulated with four levels of water regimes viz., well-irrigated (D0), water deficit for 5 d (D1), 10 d (D2) and 15 d (D3). Plants were treated with or without 10 mM of proline (Pro) and trehalose (Tre) as foliar spray started at mid-vegetative stage and continued till the end of stress period. Results revealed that water deficit stress drastically reduced most of the plant morpho-physiological attributes while other yield contributing characters were also affected due to prolonged water deficit stress. However, exogenous application of osmolytes like Pro and Tre significantly increased all those morphological, physiological and yield contributing parameters. Foliar addition of osmolytes concomitantly decreased the number of non-effective tillers hill-1 and the number of unfilled grain panicle-1 under water stress condition. Although both the osmolytes performed well under multiple duration of drought stress, the application of 10 mM Pro markedly improved all growth and yield contributing parameters under D1 water deficit stress compared to other stress durations. Hence, it may be concluded that the use of osmolytes would be a prospective remedy against moderate water deficit stress in transplanted rice production.

Effects of Irrigation Levels on the Yield of Chickpea (Cicer Arietinum Linn) Due to Incidence of Helicoverpa Armigera

Effects of four different irrigation levels viz., One irrigation at 50 per cent flowering stage, one irrigation at grain filling/pod initiation stage, two irrigations (one at 50 per cent flowering + one at grain filling stage), control (without irrigation) on the incidence of gram pod borer, Helicoverpa armigera (Hubner) on chickpea were studied during Rabi, 2014-15 and 2015-16 at Research Farm, College of Agriculture, Bikaner (Rajasthan), India. Results revealed that the highest mean larval population (3.12 larvae per 5 plants) and maximum pod damage (33.24%) were recorded in the crop which was irrigated twice viz., one at 50 per cent flowering stage and second at grain filling stage. The lowest larval population (2.03 larvae per 5 plants) with minimum pod damage (8.34%) was recorded in the crop where irrigation was not given. The maximum seed yield (11.05 q/ha) was obtained from the crop which was irrigated two times and minimum seed yield (7.56 q/ha) was obtained in control. Bangladesh J. Bot. 50(4): 1203-1207, 2021 (December)

Effect of the Amount and Timing of Ammonium Sulfate Single Top-dressing Application on Growth and Yield of Akitakomachi Rice (Oryza sativa L.)

The effect of the amount and the timing of single top-dressing application of Ammonium sulfate fertilizer on the growth and yield of Akitakomachi rice (Oryza sativa L.) was investigated in this study. Two amounts (20kg.ha-1 and 50kg.ha-1) of Ammonium sulfate ((NH4)2SO4) fertilizer were applied at three timings;14 days after transplanting, panicle initiation, and flowering respectively, giving six treatments (14DAT:20, 14DAT:50, PI:20, PI:50, FL:20 & FL:50). A Randomized Complete Block Design (RCBD) with three replications was used. Growth data were collected on plant length, number of tillers and leaf color, and calculated yield and yield components were determined. Plant length was significantly higher in 14DAT:50 and PI:50, and lowest in FL:20 and FL:50. Tiller number was higher in 14DAT:50 compared to the other treatments. 14DAT:50 and PI:50 produced the highest number of panicles per m2. PI:20 and PI:50 had the highest number of spikelets per panicle. The 1000 grains weight was highest in PI:50 and lowest in 14DAT:50. The highest yields were obtained in 14DAT:50 and PI:50, while FL:20 and FL:50 produced the lowest yields. The results showed that for nitrogen (N) single top-dressing application, high amounts increase both the plant growth and the grain yield if the application is done at vegetative stage or at panicle initiation stage. However, if the nitrogen (N) amount is too high, there exist the risk that the plants may lodge.

The Political Dynamics on Development Process of Human Rights Cities: Lessons from South Korea and Indonesia

There has not been a comparative study on the human rights cities in South Korea and Indonesia. Therefore, this paper conduct a comparative study of the dynamics within the development process of the human rights city in Gwangju and Wonosobo. This study explains how both cities flourished into Human Rights Cities using agenda-building theory. Moreover, this research elucidates the main actors and their respective roles in the development of both Human Rights Cities. Employing qualitative methods of data collection and analysis, this study found similarities and differences between the development processes of both Human Rights Cities. This article found that civil society organizations’ efforts were influential in the initiation stage in Gwangju. Meanwhile, in the case of Wonosobo, the concept of brandishing itself as a Human Rights City came from the Mayor. As a result, the top-down agenda-building process in Wonosobo took place faster than the development of the bottom-up human rights city of Gwangju.

On the question of carcinogenesis in superinvasive opisthorchiasis

Retrospective analysis of foreign literature present in PubMed was carried out with the purpose to define possible influence of superinvasive opisthorchiasis on possible development of cholangiocellular carcinoma. After the research we conclude that O. Felineus doesn’t have an entry point during the initiation stage of carcinogenesis but rather acts as a promotor of cholangiocarcinoma (СС), and therefore cannot be considered a primary cause of the disease without additional influence of another carcinogens and specific factors that increase the probability of cholangiocarcinoma development (chronic inflammation, free radicals). Keywords: superinvasive opisthorchiasis, parasitism, immune system, carcinogenesis.

SMOKE FREE AREA (SFA) DISTRICT REGULATION SUPPORT FOR ESTABLISHMENT OF A CHILD FRIENDLY SCHOOL (CFS) IN KULON PROGO DISTRICT

ABSTRACTFollowing the Child-Friendly School (CFS) Guidelines made by the Deputy for Child Development, Ministry of Women Empowerment and Child Protection (2015), one of the components that must be fulfilled is a commitment to make schools a Smoke-Free Area (SFA). Kulon Progo has District Regulation No. 5 of 2014 concerning SFA, thus it can be used as a commitment by a school guide, making it an SFA. The results of interviews with the District Social Service for Women's Empowerment and Child Protection Office stated that CFS currently remains at the initiation stage. Efforts should be made to create comfortable learning conditions for children with the support of the SFA District Regulation in the formation of CFS in Kulon Progo Regency. Analysis of the implementation monitoring checklist/compliance with District Regulation No. 5/2014 concerning SFA in 2020 which is carried out by the SFA supervision task force. Descriptive analysis method by looking at trends based on the proportion of the 10 variables used. The results of the data study show that 89.5% have been exposed to the socialization of District Regulations, 52.6% have a supervisory task force, 86.8% have installed SFA signs at the Entrance, 100% have a smoking ban warning installed, 23.7% has a place specifically for smoking, 10.5% found an ashtray in the building, 7.9% found cigarette butts, 2.6% found cigarette advertisements, 5.3% found cigarette sellers, 7.9% smoked people. From the data analysis, it is known that 81.58% have complied with SFA. However, this compliance is not optimal. This is indicated by the high percentage of availability of designated smoking areas in schools and ashtrays, cigarette butts, cigarette advertisements, cigarette sellers, and smoking people found. Schools should have a zero percentage in these variables; thus, they are not fully committed as a condition for the formation of CFS. It is necessary to optimize the application of District Regulations to create a smoke-free school environment as evidenced by not providing smoking places in schools, not allowing cigarette advertisements, smoking outside, and imposing sanctions for non-smoking violators in the school environment. Keywords: Support, Smoke-Free Area (SFA), Child Friendly Schools, Kulon Progo

Potato (Solanum tuberosum L.) Growth in Response to Foliar Silicon Application

As silicon induces abiotic stress tolerance in crop plants, it was hypothesized that foliar silicon application could improve potato growth in an early crop culture. The effect of dosage (0.25 dm3∙ha–1 or 0.50 dm3∙ha–1) and time (the leaf development stage, BBCH 14–16, tuber initiation stage, BBCH 40–41, or both the leaf development stage and tuber initiation stage) of application of the silicon-based biostimulant Optysil (200 g SiO2 and 24 g Fe in 1 dm3) on potato growth was investigated. Optysil caused an increase in plant height and above-ground plant biomass, enlarged leaf area and decreased leaf weight ratio (LWR), and, as a result, increased tuber number and tuber weight per plant. The effect of Optysil depended on a water deficit during potato growth. The average tuber weight per plant in the cultivation treated with Optysil was higher by 23% under periodic water deficits during potato growth, and by 13% under drought conditions, than in the cultivation without the biostimulant. Dosage of Optysil had a significant effect on above-ground plant biomass and leaf area in the warm and arid growing season. Under drought stress, Optysil at 0.50 dm3∙ha–1 stimulated potato growth more than at 0.25 dm3∙ha–1. Under periodic water deficits during potato growth, the time of Optysil application affected potato growth more than the biostimulant dosage. The plants produced greater above-ground biomass and had a larger leaf area with two Optysil applications; one in the initial plant growth period (BBCH 14–16), and a repeated treatment in the tuber initiation stage (BBCH 40–41). The tuber weight per plant was positively correlated with the plant height, above-ground plant biomass, leaf area, and LWR.

Mycorrhiza-Induced Alterations in Metabolome of Medicago lupulina Leaves during Symbiosis Development

The present study is aimed at disclosing metabolic profile alterations in the leaves of the Medicago lupulina MlS-1 line that result from high-efficiency arbuscular mycorrhiza (АМ) symbiosis formed with Rhizophagus irregularis under condition of a low phosphorus level in the substrate. A highly effective AM symbiosis was established in the period from the stooling to the shoot branching initiation stage (the efficiency in stem height exceeded 200%). Mycorrhization led to a more intensive accumulation of phosphates (glycerophosphoglycerol and inorganic phosphate) in M. lupulina leaves. Metabolic spectra were detected with GS-MS analysis. The application of complex mathematical analyses made it possible to identify the clustering of various groups of 320 metabolites and thus demonstrate the central importance of the carbohydrate and carboxylate-amino acid clusters. The results obtained indicate a delay in the metabolic development of mycorrhized plants. Thus, AM not only accelerates the transition between plant developmental stages but delays biochemical “maturation” mainly in the form of a lag of sugar accumulation in comparison with non-mycorrhized plants. Several methods of statistical modeling proved that, at least with respect to determining the metabolic status of host-plant leaves, stages of phenological development have priority over calendar age.

How does the digital innovation process unfold in practice? A novel third-generation and empirical-based need–solution pairing model

PurposeThere is a lack of empirical-based models derived from practice to explain the digital innovation process. The authors investigate how the digital innovation process unfolds in practice.Design/methodology/approachThe authors undertake an exploratory and phenomenological study of 21 Malaysian small and medium enterprises (SMEs) in the information and communication technology (ICT) sector.FindingsThe findings show that the delineation between digital innovation process and outcome is blurred in practice, due to the process' iterative nature. Under this process, customers' role has changed from being passive receivers of innovative products to active reviewers, testers, influential decision-makers, initiators and co-creators at different review points in the innovation process. Enterprises' role has expanded from being the initiator of the innovation process to being a cogitative actor by seeking and absorbing knowledge from customer reviews into the digital innovation process. Market analysis is often the initiator of the digital innovation process, and the findings shed light on the underlying causative mechanisms of the initiation stage, which are understudied and not well understood in the existing literature.Originality/valueThe study contributes to academic knowledge by answering scholars' call for developing third-generation practice-based innovation models, which accounts for enterprises' context-specificities and internal and external environments, and for exploring the suitability of the need–solution fit approach for the digital innovation process. Such models have only been conceptually advocated in the literature. The study also informs practitioners on the organizational and operational activities involved in managing and strategizing for the digital innovation process.

Genomic regions associated with physiological, biochemical and yield-related responses under water deficit in diploid potato at the tuber initiation stage revealed by GWAS

Water deficit, which is increasing with climate change, is a serious threat to agricultural sustainability worldwide. Dissection of the genetic architecture of water deficit responses is highly desirable for developing water-deficit tolerant potato cultivars and enhancing the resilience of existing cultivars. This study examined genetic variation in response to water deficit in a panel of diploid potato and identified the QTL governing this trait via a genome-wide association study (GWAS). A panel of 104 diploid potato accessions were evaluated under both well-watered and water deficit treatments at tuber initiation stage. Drought stress index (DTI) was calculated to assess tolerance of the diploid potato genotypes to water deficit. The GWAS was conducted using a matrix of 47K single nucleotide polymorphisms (SNP), recently available for this population. We are reporting 38 QTL, seven for well-watered conditions, twenty-two for water deficit conditions and nine for DTI which explain between 12.6% and 44.1% of the phenotypic variance. A set of 6 QTL were found to be associated with more than one variable. Marker WDP-9.21 was found associated with tuber fresh weigh under WD and gene annotation analysis revealed co-localization with the Glucan/water dikinase (GWD) gene. Of the nine QTL detected from DTI on chromosomes 2,3,5,8,10 and 12, three candidate genes with a feasible role in water deficit response were identified. The findings of this study can be used in marker-assisted selection (MAS) for water- deficit tolerance breeding in potato.