Turkish Journal of Agricultural and Natural Sciences最新文献_第2页

Effect of central acceleration on the growth of a plant 中心加速度对植物生长的影响

Turkish Journal of Agricultural and Natural Sciences Pub Date : 2019-06-30 DOI: 10.35429/jnas.2019.18.6.6.14

Andrea Gomez-Leyva, Gabriela Del Valle-Díaz, Damián Muciño-Cruz, R. Espíndola-Heredia

{"title":"Effect of central acceleration on the growth of a plant","authors":"Andrea Gomez-Leyva, Gabriela Del Valle-Díaz, Damián Muciño-Cruz, R. Espíndola-Heredia","doi":"10.35429/jnas.2019.18.6.6.14","DOIUrl":"https://doi.org/10.35429/jnas.2019.18.6.6.14","url":null,"abstract":"In 2013, NASA conducted a series of experiments to study the growth of plants in microgravity. The interest of replicating the experiment is to study the relation of acceleration with plant growth, which is achieved by the construction of an accelerometer and the germination of different plants under certain conditions. In this paper we present the effects of different gravity values on the growth of a plant. To make the changes, the basic concepts of central acceleration (centripetal acceleration) are considered, with the help of a centrifuge any gravity value is simulated, for this, it is necessary to place the seeds at different distances from a rotation axis which is rotated continuously for several days. Two different systems were considered: a) placing the axis of rotation vertically, with this, the growth of the plants over the course of days will be observed, along with the effects on the auxins, which are responsible for geotropism, that is, the extraction of auxins from the plants placed in the centrifuge will determine the influence of rotation on the concentration of auxins; and b) the growth in the direction of gravity is affected according to the distance taken from the center of the axis of rotation. We also compare the natural growth of plants and the growth affected by the central force.","PeriodicalId":31060,"journal":{"name":"Turkish Journal of Agricultural and Natural Sciences","volume":"41 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85430335","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Development of cacao crop (Thebroma cacao L), in Úrsulo Galván

Turkish Journal of Agricultural and Natural Sciences Pub Date : 2019-06-30 DOI: 10.35429/jnas.2019.18.6.1.5

Ignacio Garay-Peralta, Alfredo Díaz-Criollo, Héctor Gabriel Medina-Lagunes

引用次数: 0

Physico-chemical evaluation of three varieties of tejocote (Crataegus mexicana) 三个tejocote (creataegus mexicana)品种的理化评价

Turkish Journal of Agricultural and Natural Sciences Pub Date : 2019-06-30 DOI: 10.35429/jnas.2019.18.6.31.38

S. Sánchez-Herrera, N. Rodríguez-Martínez, A. Rodríguez-Ortega, B. Ponce-Lira

引用次数: 0

Intelligent conditioning for the intensive production of tilapia in the southern zone of the State of Mexico 墨西哥南部地区罗非鱼集约化生产的智能调节系统

Turkish Journal of Agricultural and Natural Sciences Pub Date : 2019-06-30 DOI: 10.35429/jnas.2019.18.6.15.23

Rosa María De Anda-López, Rodolfo Aguirre-Aranda, Agripín Sánches-Salinas, Horacio Jaramillo-Plata

{"title":"Intelligent conditioning for the intensive production of tilapia in the southern zone of the State of Mexico","authors":"Rosa María De Anda-López, Rodolfo Aguirre-Aranda, Agripín Sánches-Salinas, Horacio Jaramillo-Plata","doi":"10.35429/jnas.2019.18.6.15.23","DOIUrl":"https://doi.org/10.35429/jnas.2019.18.6.15.23","url":null,"abstract":"Fish farming is a fundamental sector of the economy for several communities. Traditionally, the processes inherent to this activity, such as the feeding of the fish, the replacement of water, the control of temperature, the level of ammonium, are carried out manually and empirically; However, in recent years they have begun to incorporate technological tools for their automation. In the present work we seek to integrate intelligent and separate control systems that exist in the market to generate a single intelligent control system, with the ability to control temperature, ammonia, water clarity, food, in such a way that is presented as a flexible and integrated production process, that meets the requirements of aquaculture health, this system should provide, to small producers in the southern area of the State of Mexico, the certainty that your product meets specifications and standards for human consumption. With this study new opportunities for the application of technologies, especially those of low cost, are envisaged, so that they are accessible to the greatest number of fish farmers and their use guarantees the improvement in the processes carried out. It also highlights the importance that the use of alternative energies can have, to make the most of natural resources and minimize the environmental impact.","PeriodicalId":31060,"journal":{"name":"Turkish Journal of Agricultural and Natural Sciences","volume":"258 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77067320","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Fruit thinning in seven tomato varieties (Lycopersicon esculentum Mill.) under greenhouse 7个番茄品种温室下果实减薄的研究

Turkish Journal of Agricultural and Natural Sciences Pub Date : 2019-06-30 DOI: 10.35429/jnas.2019.19.6.13.17

Everardo Vargas-Espinoza, Marina Gaytán-Ruelas, Marisa Rivera-Arredondo, Alberto Calderón-Ruiz

{"title":"Fruit thinning in seven tomato varieties (Lycopersicon esculentum Mill.) under greenhouse","authors":"Everardo Vargas-Espinoza, Marina Gaytán-Ruelas, Marisa Rivera-Arredondo, Alberto Calderón-Ruiz","doi":"10.35429/jnas.2019.19.6.13.17","DOIUrl":"https://doi.org/10.35429/jnas.2019.19.6.13.17","url":null,"abstract":"The experiment was conducted from May to August 2018 at the Technological University of the Southwest of Guanajuato (UTSOE) in a randomized complete block design with three repetitions, in greenhouse 1 of 700 m2 of the Sustainable and Protected Agriculture Career; with the purpose of evaluating the effect of three levels of thinning of fruits, with four, five fruits and without thinning, in the yield and plant variables in seven varieties of saladette tomato produced under greenhouse and in hydroponic substrate. The varieties evaluated were: Natalie, USATX 12227, USATX 9934, Juan Pablo, USATX 24019, USATX 16117, USATX 15538, all established at a density of 31,250 plants per hectare. The thinning levels of four and five fruits per cluster had a positive influence on tomato yield, on treatments without thinning, the Natalie and Juan Pablo varieties being the ones with the highest yield, after three weeks of harvest. Regarding the number of leaves, despite finding statistical differences (p≤ 0.01), the thinning of fruits did not necessarily influence the development of leaves, but rather was due to the genetics of each variety, the USATX 24019 variety being the that more leaves developed.","PeriodicalId":31060,"journal":{"name":"Turkish Journal of Agricultural and Natural Sciences","volume":"24 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90353243","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evaluation of the antibacterial activity of Artemisia ludoviciana subsp. Mexican against three enterobacteria 黄花蒿亚种的抑菌活性评价。墨西哥人对抗三种肠杆菌

Turkish Journal of Agricultural and Natural Sciences Pub Date : 2019-06-30 DOI: 10.35429/jnas.2019.19.6.1.12

A. Hernández-Morales, Francisco Javier Ávila-Padrón, Candy Carranza-Álvarez, J. J. Maldonado-Miranda

{"title":"Evaluation of the antibacterial activity of Artemisia ludoviciana subsp. Mexican against three enterobacteria","authors":"A. Hernández-Morales, Francisco Javier Ávila-Padrón, Candy Carranza-Álvarez, J. J. Maldonado-Miranda","doi":"10.35429/jnas.2019.19.6.1.12","DOIUrl":"https://doi.org/10.35429/jnas.2019.19.6.1.12","url":null,"abstract":"Fractionated extraction of the leaves of Artemisia ludoviciana subsp. mexicana was performed, using hexane, dichloromethane and methanol, to obtain compounds of different polarity. Essential oils, aqueous decoction and hydroalcoholic extract were also obtained. Phytochemical profile was determined for each extract based on coloration and precipitation tests. Extracts were evaluated against three enterobacteria using the plate microdilution method. Chemical analysis revealed that dichloromethane fraction has a greater variety of compounds than hexane and methanolic fractions. The content of compounds of dichloromethane fraction correlates with the highest antimicrobial activity observed, suggesting that metabolites responsible for antimicrobial effect are intermediate polarity. Regarding extracts, ethanolic extract exerts a better effect than the decoction, while the essential oil shows the same antibacterial effect at low concentrations. Results demonstrate that A. ludoviciana subsp. mexicana has a great variety of compounds, which, according to their nature, can be eluted with solvents of different polarity. These compounds contribute to the antibacterial effect attributed to this plant.","PeriodicalId":31060,"journal":{"name":"Turkish Journal of Agricultural and Natural Sciences","volume":"61 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73851793","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Weight gain in lambs, supplemented with a commercial food al 12% protein 羔羊增重，补充12%蛋白质的商业食品

Turkish Journal of Agricultural and Natural Sciences Pub Date : 2019-06-30 DOI: 10.35429/jnas.2019.18.6.39.42

Rodolfo Lucio, Leticia Sesento, J. Bedolla, Á. R. Cruz

引用次数: 0

Morphological characterization of seeds and germination of Pseudotsuga menziesii (Mirb.) Franco (Pinaceae) 孟氏伪树种子形态特征及萌发佛朗哥(松科)

Turkish Journal of Agricultural and Natural Sciences Pub Date : 2019-06-30 DOI: 10.35429/jnas.2019.18.6.24.30

Nedvy Ríos-Palma, A. Contreras-Toledo, J. M. Pichardo-González, J. M. Rascón-Ayala

{"title":"Morphological characterization of seeds and germination of Pseudotsuga menziesii (Mirb.) Franco (Pinaceae)","authors":"Nedvy Ríos-Palma, A. Contreras-Toledo, J. M. Pichardo-González, J. M. Rascón-Ayala","doi":"10.35429/jnas.2019.18.6.24.30","DOIUrl":"https://doi.org/10.35429/jnas.2019.18.6.24.30","url":null,"abstract":"Pseudotsuga menziesii (Mirb.) Franco is a species of economic and ecological importance for Mexico. Several actions have been implemented for its ex situ conservation. However, the lack of characterization data is a limiting factor in genebanks. In this study, morphological characteristics and seed germination traits were evaluated in 12 accessions of P. menziesii from Tlaxcala and Puebla. Fifteen seed variables, germination percentage (PG), days to germination (DG) and radicle growth (CR) were measured in 100 seeds (four replicas of 25 seeds each) per accession. A principal component analysis, a cluster analysis and the estimation of the relationship between seed variables and germination traits were performed. The variables that had largest influence on the distribution of morphological variation were: LA, ASC, AS and AA/AS. The accessions were distributed in five general groups according mainly to their geographical origin. For some accessions, PG and CR had a direct relationship with seed size variables. These results showed the presence of variation and the influence of seed morphology on the germination of the evaluated accessions.","PeriodicalId":31060,"journal":{"name":"Turkish Journal of Agricultural and Natural Sciences","volume":"40 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86384874","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0