scholarly journals PATTERN OF VARIATIONS AMONGST SWEET CORN GENOTYPES GROWN UNDER ORGANIC ENVIRONMENT

2017 ◽  
Author(s):  
Mohammad Chozin ◽  
Sigit Sudjatmiko ◽  
Zainal Muktamar ◽  
Nanik Setyowati
Keyword(s):  
Principal Components ◽  
Sweet Corn ◽  
Morphological Characteristics ◽  
Principal Component ◽  
Farming Systems ◽  
Farming System ◽  
Organic Production ◽  
Growth And Yield ◽  
Marketable Yield ◽  
Eigen Values

Status: PostprintCurrently, organic sweet corn growers depend on varieties bred for intensive farming systems. The present study was addressed to elucidate the pattern of variations among 20 sweet corn genotypes under organic farming system and to classify them into distinct groups on the basis of their agro-morphological characteristics. Data were collected from two growing seasons for growth and yield characteristic and subjected to univariate and multivariate analyses. Combined analysis of variance across two seasons revealed that tasseling date, harvesting date, kernel row number, and marketable yield exhibited significant season x genotype interaction effect, while the rest of the observed characters showed significant both season and genotype effects. Principal component analysis showed that first season data had first three principal components with Eigen values > 1 accounted 82% of the total variation, while second season data had first two principal components with Eigen values > 1 accounted for 79%. In both seasons, ear length, ear diameter, ear weight, and marketable yield were the most important characters in first principal component. Based on cluster analysis, the genotypes could be classified into 5 clusters for both seasons. These results can be used by the growers in deciding the most suitable sweet corn variety for organic production.

scholarly journals Morphological evaluation of common bean diversity in Bosnia and Herzegovina using the discriminant analysis of principal components (DAPC) multivariate method

Genetika ◽  
2013 ◽  
Vol 45 (3) ◽  
pp. 963-977 ◽  
Author(s):  
Jasmin Grahic ◽  
Fuad Gasi ◽  
Mirsad Kurtovic ◽  
Lutvija Karic ◽  
Mirha Djikic ◽  
...  
Keyword(s):  
Discriminant Analysis ◽  
Common Bean ◽  
Bosnia And Herzegovina ◽  
Principal Components ◽  
Morphological Characteristics ◽  
Principal Component ◽  
Discriminant Functions ◽  
Factor Loadings ◽  
Geographical Regions ◽  
High Level

In order to analyze morphological characteristics of locally cultivated common bean landraces from Bosnia and Herzegovina (B&H), thirteen quantitative and qualitative traits of 40 P. vulgaris accessions, collected from four geographical regions (Northwest B&H, Northeast B&H, Central B&H and Sarajevo) and maintained at the Gene bank of the Faculty of Agriculture and Food Sciences in Sarajevo, were examined. Principal component analysis (PCA) showed that the proportion of variance retained in the first two principal components was 54.35%. The first principal component had high contributing factor loadings from seed width, seed height and seed weight, whilst the second principal component had high contributing factor loadings from the analyzed traits seed per pod and pod length. PCA plot, based on the first two principal components, displayed a high level of variability among the analyzed material. The discriminant analysis of principal components (DAPC) created 3 discriminant functions (DF), whereby the first two discriminant functions accounted for 90.4% of the variance retained. Based on the retained DFs, DAPC provided group membership probabilities which showed that 70% of the accessions examined were correctly classified between the geographically defined groups. Based on the taxonomic distance, 40 common bean accessions analyzed in this study formed two major clusters, whereas two accessions Acc304 and Acc307 didn?t group in any of those. Acc360 and Acc362, as well as Acc324 and Acc371 displayed a high level of similarity and are probably the same landrace. The present diversity of Bosnia and Herzegovina?s common been landraces could be useful in future breeding programs.

scholarly journals Determination of Fatty Acids Profile in Original Brown Cows Dairy Products and Relationship with Alpine Pasture Farming System

Animals ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 1231 ◽  
Author(s):  
Stella Agradi ◽  
Giulio Curone ◽  
Daniele Negroni ◽  
Daniele Vigo ◽  
Gabriele Brecchia ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Mammary Gland ◽  
De Novo ◽  
Geographical Location ◽  
Principal Component ◽  
Farming Systems ◽  
Farming System ◽  
Point Of View ◽  
Fatty Acids Profile ◽  
Discriminant Analyses

This study aimed to evaluate the relationships between fatty acids and the pattern that most contributes to discriminate between two farming systems, in which the main difference was the practice, or not, of alpine summer-grazing. Milk and cheese were sampled every month in two farms of Original Brown cows identical under geographical location and management during no grazing season point of view in the 2018 season. Fatty acids concentrations were determined by gas chromatography. The principal component analysis extracted three components (PCs). Mammary gland de novo synthetized fatty acids (C14:0, C14:1 n9, and C16:0) and saturated and monosaturated C18 fatty acids (C18:0, C18:1 n9c) were inversely associated in the PC1; PC2 included polyunsaturated C18 fatty acids (C18:2 n6c, C18:3 n3) and C15:0 while conjugated linoleic acid (CLA n9c, n11t) and fatty acids containing 20 or more carbon atoms (C21:0, C20:5 n3) were associated in the PC3. The processes of rumen fermentation and de novo synthesis in mammary gland that are, in turn, influenced by diet, could explain the relationships between fatty acids within each PC. The discriminant analyses showed that the PC2 included the fatty acids profile that best discriminated between the two farming systems, followed by PC3 and, lastly, PC1. This model, if validated, could be an important tool to the dairy industry.

scholarly journals Principal Component Analysis of Some Quantitative and Qualitative Traits in Iranian Spinach Landraces

2017 ◽  
Vol 71 (4) ◽  
pp. 307-310
Author(s):  
Mehdi Mohebodini ◽  
Naser Sabaghnia ◽  
Farhad Behtash ◽  
Mohsen Janmohammadi
Keyword(s):  
Principal Component Analysis ◽  
Principal Components ◽  
Quantitative Traits ◽  
Agronomic Traits ◽  
Principal Component ◽  
Component Analysis ◽  
Leaf Width ◽  
Petiole Length ◽  
Qualitative Traits ◽  
Eigen Values

Abstract Landraces of spinach in Iran have not been sufficiently characterised for their morpho-agronomic traits. Such characterisation would be helpful in the development of new genetically improved cultivars. In this study 54 spinach accessions collected from the major spinach growing areas of Iran were evaluated to determine their phenotypic diversity profile of spinach genotypes on the basis of 10 quantitative and 9 qualitative morpho-agronomic traits. High coefficients of variation were recorded in some quantitative traits (dry yield and leaf area) and all of the qualitative traits. Using principal component analysis, the first four principal components with eigen-values more than 1 contributed 87% of the variability among accessions for quantitative traits, whereas the first four principal components with eigen-values more than 0.8 contributed 79% of the variability among accessions for qualitative traits. The most important relations observed on the first two principal components were a strong positive association between leaf width and petiole length; between leaf length and leaf numbers in flowering; and among fresh yield, dry yield and petiole diameter; a near zero correlation between days to flowering with leaf width and petiole length. Prickly seeds, high percentage of female plants, smooth leaf texture, high numbers of leaves at flowering, greygreen leaves, erect petiole attitude and long petiole length are important characters for spinach breeding programmes.

Effect of Lentil’s Variety and Cultural Farming System on Nutritional Value and Physicochemical Sensory Properties as Related to Human Daily Coverage

2021 ◽  
Vol 6 (2) ◽  
Author(s):  
Karagounis I ◽  
◽  
Avdikos ID ◽  
Pankou CI ◽  
Kostoula SD ◽  
...  
Keyword(s):  
Physicochemical Properties ◽  
Nutritional Value ◽  
Principal Component ◽  
Farming Systems ◽  
Farming System ◽  
Conventional Farming ◽  
Multivariate Statistical ◽  
Calcium Magnesium ◽  
Swelling Coefficient ◽  
Organic And Conventional Farming

The aim of this study is to determine if there is any influence of lentil variety and environment of cultivation in the chemical composition of seeds originating from organic and conventional farming systems. Particularly, an evaluation was made on the physicochemical properties of three lentil cultivars (‘Thessalia’, ‘Dimitra’, ‘Samos’) and also the effect of farming system towards the composition of seeds to be assessed for discovering the tendency which specific cultivar or farming system are most preferable for the consumers. For the evaluation of the physicochemical properties of lentil seeds: (a) Seed density, (b) Hydration coefficient, (c) Swelling coefficient, (d) pH and (e) Content in macro- and micronutrients (total nitrogen, phosphorus, potassium, calcium, magnesium, iron, zinc, manganese, and boron), were estimated. Multivariate statistical analysis was applied for every characteristic in order to determine similarities/ differences among the cultivars in both organic and conventional farming systems. In addition, Analysis of Variance (ANOVA) and Principal Component Analysis (PCA) were conducted. Regarding the three cultivars under evaluation, cv. ‘Dimitra’ is superior especially in the organic environment, followed by cv. ‘Thessalia’, whose nutritional value increases under organic farming conditions. While ‘Samos’ exhibited a slightly better performance under conventional conditions. Based on the results of this research, the interaction between the lentil cultivar and the cultivating environment can influence the nutritional value and the physicochemical properties of lentil’s seeds.

The social and economic diversity of the coffee-banana farming system and technology uptake in Central Uganda

2021 ◽  
pp. 108
Author(s):  
◽  
◽  
◽  
◽  
Keyword(s):  
Food Systems ◽  
Agricultural Research ◽  
Principal Component ◽  
Farming Systems ◽  
Farming System ◽  
Technology System ◽  
Economic Diversity ◽  
The Social ◽  
And Cluster Analysis ◽  
Farming Households

Food systems of the future that will guarantee food and nutrition security of millions of poor farming households will have to be both economically and socially diverse. Diversity of farming systems acts as a catalyst for innovation, commercialisation as well as technology adoption. This study sought to find farm typologies and explore the social, enterprise and economic diversity of the various farm types based on a promoted Growing Bananas with Trees and Livestock (GBTL) technology system that was implemented by National Agricultural Research Organisation and Bioversity International in three districts of Central Uganda, Kiboga, Nakaseke and Ssembabule. Using Principal Component Analysis (PCA) and Cluster Analysis (CA), typologies were created in which two distinct clusters of farming households were revealed. Further analysis of the clusters through Food Consumption Scores, food classes, and other descriptive statistics indicated that the two clusters were socially and economically diverse. Findings indicated that Cluster 1 is made up of smaller farms with high crop diversity. Families in Cluster 1 sell more of their produce and subsequently have lower food security compared to the land-abundant, off-farm earning and more food secure Cluster 2. We failed to reject the hypothesis that socially and economically diverse farmers adopt technologies more given that the level of GBTL adoption was about 25% and about 70% for Banana + Goats within both clusters.

scholarly journals PENGARUH JENIS KOMPOS DAN WAKTU PENGENDALIAN GULMA TERHADAP PERTUMBUHAN DAN HASIL TANAMAN JAGUNG MANIS SECARA ORGANIK

2017 ◽  
Author(s):  
Rahmat Wijaya ◽  
Nanik Setyowati ◽  
Masdar Masdar
Keyword(s):  
Organic Farming ◽  
Weed Control ◽  
Water Hyacinth ◽  
Sweet Corn ◽  
Organic Fertilizer ◽  
Dry Weight ◽  
Farming System ◽  
Growth And Yield ◽  
Synthetic Fertilizer ◽  
Corn Plants

There has been a shift towards sustainable agriculture including organic farming system. Organic fertilizer is absolutely necessary in organic farming to replace synthetic fertilizers. In addition, weed control is nessesary to prevent yield decrease. This study aimed to compare influence of different types of compost and weed control periode on growth and yield of sweet corn. This research was carried out in January-March 2016 in Padang Serai, Kampung Melayu Subdistrict, Bengkulu City, Indonesia. The design used in the experiment was Complete Random Design with two factors. The first factor was synthetic fertilizer, vermicompost, litter compost, wedelia compost and water hyacinth compost, whereas the second factor was the weed control periode which were 3 WAP (week after planted) as well as 3 and 6 WAP. Sweet corn plants that nurtured with compost has better growth and yield compared to a plant that just nurtured with inorganic fertilizers. The best growth and yield of sweet corn plants produced from plants fertilized with wedelia compost and vermicompost followed by water hyacinth compost and litter leaves compost. Sweet corn fertilized with wedelia compost and vermicompost provided highest shoot fresh and dry weight. Sweet corn fertilized with compost of rate 20 ton/Ha gave diameter of unhusked ear, diameter of husked ear as well as length of unhusked ear higher than synthetic fertilizer. Weed control once in 3 WAP (week after planted) as well as twice in 3 and 6 WAP resulted in no significant different on sweet corn growth and yield

scholarly journals DIVERGÊNCIA GENÉTICA ENTRE GENÓTIPOS DE Mauritia flexuosa L. f. POR MEIO DE MORFOMETRIA DE FRUTOS E SEMENTES

Nativa ◽  
2020 ◽  
Vol 8 (4) ◽  
pp. 585-590
Author(s):  
Rosimeire Barboza Bispo ◽  
Juliana de Freitas Encinas Dardengo ◽  
Rosimara Barboza Bispo ◽  
Rosieli Barboza Bispo ◽  
Ana Aparecida Bandini Rossi
Keyword(s):  
Principal Component Analysis ◽  
Genetic Variability ◽  
Principal Components ◽  
Morphological Characteristics ◽  
Principal Component ◽  
Optimization Method ◽  
Mato Grosso ◽  
Upgma Dendrogram ◽  
Mauritia Flexuosa ◽  
Formation Of Groups

O objetivo do estudo foi caracterizar a variabilidade genética entre vinte genótipos de butiris (M. flexuosa L.f.) em vegetação natural nos municípios de Alta Floresta e Carlinda, MT, com base nas características morfológicas dos frutos e sementes, com o método de Otimização de Tocher, UPGMA e Análise de Componentes Principais. Foram amostrados 20 genótipos e avaliadas 8 caracteres morfológicos dos frutos e sementes. Os resultados foram obtidos através de medidas de Dissimilaridade, com o uso do programa GENES. O método de Tocher formou dois grupos, assim como o agrupamento UPGMA com corte a 80%. Com os Componentes Principais houve a formação de três grupos. As três metodologias utilizadas revelaram que existe divergência genética entre os vinte genótipos de buritis avaliados. A divergência evidenciada neste trabalho permite inferir que para melhor representar a diversidade encontrada em M. flexuosa deve-se amostrar indivíduos pertencentes aos três grupos formados pela dispersão gráfica dos componentes principais, já que o dendrograma UPGMA também evidencia essa classificação, assim, pode-se indicar essas árvores para futuras pesquisas de melhoramento e conservação da espécie. Palavras-chave: buriti; marcadores morfológicos; variabilidade genética.   GENETIC DIVERGENCE AMONG Mauritia flexuosa L. f. GENOTYPES BASED ON SEED AND FRUIT MORPHOMETRY   ABSTRACT: The objective of the study was to characterize the genetic variability among twenty genotypes of M. flexuosa L. f. in natural vegetation in the municipalities of Alta Floresta and Carlinda, Mato Grosso state, Brazil, based on the morphological characteristics of the fruits and seeds, with the Tocher Optimization method, UPGMA and Principal Component Analysis. Twenty genotypes were sampled and eight morphological characteristics of fruits and seeds were evaluated. The results were based on the Dissimilarities Measures methodology, using the GENES program. The Tocher method formed two groups, as well as the UPGMA cluster with 80% cut. The Principal Components formed three groups. All methods used showed agreement on the formation of groups. The divergence presented in this research allows us to infer that in order to better represent the diversity found in M. flexuosa, individuals belonging to the three groups formed by the graphic dispersion of the principal components must be sampled, since the UPGMA dendrogram also shows this classification, so we indicate these trees for future breeding and conservation researches. Keywords: buriti; morphological characteristics; genetic variability.

scholarly journals High Tunnel and Grafting Effects on Organic Tomato Plant Growth and Yield in the Subtropics

2020 ◽  
Vol 30 (4) ◽  
pp. 492-503
Author(s):  
Craig J. Frey ◽  
Xin Zhao ◽  
Jeffrey K. Brecht ◽  
Dustin M. Huff ◽  
Zachary E. Black
Keyword(s):  
Open Field ◽  
Total Yield ◽  
Organic Production ◽  
Growth And Yield ◽  
Fresh Market ◽  
Marketable Yield ◽  
Tomato Production ◽  
High Tunnel ◽  
High Tunnels ◽  
Field Production

Although grower interest in high tunnel tomato (Solanum lycopersicum) production has increased in recent years, systematic high tunnel research conducted in humid, subtropical regions has been limited. The potential of tomato grafting to mitigate biotic and abiotic stresses makes it complementary to high-value production systems in high tunnels. In this 2-year study, grafted vs. nongrafted organic tomato production in high tunnels and open fields was investigated to determine possible synergistic effects of these two technologies. In 2016, high tunnels resulted in a significant increase of total and marketable yields, by 43% and 87%, respectively, over open field production. Grafting also significantly increased total and marketable yields over nongrafted plants by 34% and 42%, respectively. Cultivar effects demonstrated greater benefits with the implementation of high tunnel and grafting technologies for ‘Tribute’ (a beefsteak-type tomato) than for ‘Garden Gem’ (a plum-type tomato), as the increase in marketable yield was 33% greater for ‘Tribute’ in high tunnels and 45% greater for ‘Tribute’ with grafting. In 2017, a delayed effective transplanting date and the lack of high tunnel summer season extension produced results that were generally cultivar specific. While grafting increased the total yield of both cultivars (by 18%), marketable yield was increased by grafting only for ‘Tribute’ in high tunnels (by 42%). Additionally, high tunnels improved marketable yield of ‘Tribute’ by 129% but had no effect on ‘Garden Gem’. This demonstrated the consistent trend of the beefsteak-type tomato benefiting more from the combination of high tunnel and grafting technologies than the plum-type tomato. High tunnels reduced fruit decay and cracking by up to 71% compared with open field production. Stink bug (Pentatomidae) damage had the greatest impact on marketable yields each season, reaching 13% and 34% of total yields in 2016 and 2017, respectively, and was unaffected by high tunnel production or grafting. This study revealed the benefits of integrating high tunnel and grafting technologies for enhancing organic production of fresh-market tomato in the humid subtropics, and demonstrated more research is warranted to establish regional planting dates and further optimize this high-value cropping system.

scholarly journals Using Digestate and Biochar as Fertilizers to Improve Processing Tomato Production Sustainability

Agronomy ◽  
2020 ◽  
Vol 10 (1) ◽  
pp. 138 ◽  
Author(s):  
Domenico Ronga ◽  
Federica Caradonia ◽  
Mario Parisi ◽  
Guido Bezzi ◽  
Bruno Parisi ◽  
...  
Keyword(s):  
Organic Farming ◽  
Farming Systems ◽  
Farming System ◽  
Fruit Weight ◽  
Future Research ◽  
Marketable Yield ◽  
Tomato Production ◽  
Processing Tomato ◽  
Organic Farming System

The principal goal of the organic farming system (OFS) is to develop enterprises that are sustainable and harmonious with the environment. Unfortunately, the OFS yields fewer products per land than the non-organic farming system in many agricultural products. The objective of our study was to assess the effects of digestate and biochar fertilizers on yield and fruit quality of processing tomato produced under the OFS. The experiment was carried out in Po Valley, during the 2017 and 2018 growing seasons. Liquid digestate (LD), LD + biochar (LD + BC) and pelleted digestate (PD) were evaluated and compared to biochar (BC) application and unfertilized control. The results showed that plants fertilized with LD + BC recorded the maximum marketable yield (72 t ha−1), followed by BC (67 t ha−1), PD (64 t ha−1) and LD (59 t ha−1); while the lowest production (47 t ha−1) was recorded in unfertilized plants. Over the two cropping seasons, LD + BC, BC, PD, and LD, increased fruit number per plant (+15%), fruit weight (+24%), Brix t ha−1 (+41%) and reduced Bostwick index (−16%), if compared to the untreated control. Considering the overall agronomic performances, digestate and biochar can be useful options for increasing yield and quality of processing tomato production in the OFS. Hence, these fertilizers can be assessed in future research both on other crops and farming systems.

scholarly journals Diversification of Cropping Systems for Different Integrated Farming System Models under Irrigated Situation of Southern Telangana Zone, Telangana, India

2020 ◽  
pp. 51-60
Author(s):  
Ch. Pragathi Kumari ◽  
M. Goverdhan ◽  
Knight Nthebere ◽  
G. Kiran Reddy ◽  
S. H. K. Sharma ◽  
...  
Keyword(s):  
Sweet Corn ◽  
Sandy Loam ◽  
Cropping Systems ◽  
Soil Health ◽  
Cropping System ◽  
Farming Systems ◽  
Farming System ◽  
Pigeon Pea ◽  
Bt Cotton ◽  
Integrated Farming

A long-term field experiment was undertaken during the year 2019-20 (third year of the experiment) at college farm, AICRP on Integrated Farming Systems unit, PJTSAU, Hyderabad to evaluate productivity and profitability of cropping systems for different farming systems under irrigated situation on a sandy loam soil of Southern Telangana Zone (STZ), Telangana. Among the ten cropping systems evaluated, sweet corn – vegetable system (tomato) was found to be more remunerative with B:C ratio 3.30 followed by okra – marigold – beetroot system with B:C ratio 3.0. Among the ecological cropping systems for improving soil health, pigeonpea + greengram (1:7) – sesame cropping system recorded higher BC ratio (2.02) compared to Bt cotton + green gram (1:3) – groundnut cropping system (1.78). Out of the two systems evaluated to meet the household nutritional security, pigeon pea + groundnut (1:7) – fingermillet system recorded higher BC ratio (1.85) compared to pigeon pea + maize (1:3) – groundnut. Within the two fodder crops/cropping systems, fodder maize – lucerne system resulted in higher B:C ratio (1.65).

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