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Journal articles on the topic 'Plant physiology, laboratory manuals'

Author: Grafiati

Published: 4 June 2021

Last updated: 31 January 2023

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1

Drugova, E. V., and T. M. Ozerskaya. "VIR and Leningrad Quarantine Laboratory: 90 years of cooperation." Proceedings on applied botany, genetics and breeding 183, no. 4 (December 21, 2022): 251–61. http://dx.doi.org/10.30901/2227-8834-2022-4-251-261.

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The history of Leningrad Quarantine Laboratory, a subdivision of the Soviet and Russian phytosanitary services, is discussed. Its interaction and cooperation with the All-Union Research Institute of Plant Industry (later: N.I. Vavilov All-Russian Institute of Plant Genetic Resources, VIR) are reviewed. The background of the need to organize such laboratory, its main activities, and the changes that followed are also explained.Leningrad Quarantine Laboratory has always closely collaborated with VIR. It has been accommodated within the Institute’s premises for 75 years. Such proximity has facilitated and accelerated the access to the plant germplasm received by VIR for plant protection and quarantine experts. Thus, a unique combination of phytosanitary safety and research activities was achieved. At the same time, the laboratory turned out to be an important research institution, publishing scientific works and methodological guidelines in the field of plant protection.In the course of its activities, the laboratory staff improved the existing methods and developed new ones for phytosanitary control of plant germplasm and its protection against pests, weeds, and pathogenic microorganisms. Manuals, directories, and identification guides written by the laboratory staff still remain the reference books for quarantine and plant protection experts. The laboratory was also very important as a qualification improvement facility for such experts. All these functions have become possible because of the work with plant germplasm that arrived to the VIR collection.

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Joly, Robert J., Michelle L. Jones, Sven Verlinden, David Rhodes, and William R. Woodson. "Learning in An Inquiry-Driven Plant Physiology Laboratory." Journal of Natural Resources and Life Sciences Education 29, no. 1 (2000): 31–35. http://dx.doi.org/10.2134/jnrlse.2000.0031.

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3

Mayerhofer, Patrick, James Carter, and J. Maxwell Donelan. "A remote laboratory course on experimental human physiology using wearable technology." Advances in Physiology Education 46, no. 1 (March 1, 2022): 117–24. http://dx.doi.org/10.1152/advan.00127.2021.

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To help educators deliver their physiology laboratory courses remotely, we developed an inexpensive, customizable hardware kit along with freely available teaching resources. We based the course design on four principles that should allow students to conduct insightful experiments on different physiological systems. First, the experimental setup should not be constrained to laboratory environments. Second, students should be able to take this course without prior coding and electronics experience. Third, the hardware kit should be relatively inexpensive, and all other resources should be freely available. Fourth, all resources should be customizable for educators. The hardware kit consists of commercially available electronic components, with a microcontroller as its hub (Arduino friendly). All measurement systems can be assembled without soldering. The hardware kit is cost-effective (approximately the cost of a textbook) and can be customized depending upon instructional needs. All software is freely available, and we share all necessary codes in open-access online repositories for simple use and customizability. All lab manuals and additional video tutorials are also freely available online and customizable. In our particular course, we have weekly asynchronous physiology lectures and one synchronous laboratory session, where students can get help with their equipment. In this article, we only focus on the novel and open-source laboratory part of the course. The laboratory includes four units [data acquisition, ECG, electromyography (EMG), activity classification] and one final project. It is our intent that these resources will allow other educators to rapidly implement their own remote physiology laboratories or to extend our work into other pedagogical applications of wearable technology.

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Vila, Francisca, and Amparo Sanz. "A proposal for evaluating laboratory instruction in a plant physiology course." Theoretical and Experimental Plant Physiology 30, no. 1 (March 2018): 1–8. http://dx.doi.org/10.1007/s40626-018-0101-x.

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Joly, Robert J., and W. R. Woodson. "An Inquiry-based Approach to Teaching Plant Physiology." HortTechnology 10, no. 2 (January 2000): 277–79. http://dx.doi.org/10.21273/horttech.10.2.277.

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The principles of plant physiology are best learned in an environment where students are directly engaged in the process of scientific inquiry. Working from this assumption, we have developed a two-stage approach to laboratory instruction that fosters student-directed research within an undergraduate plant physiology course. During the first 10 weeks of a 16-week semester, students develop competency in measuring physiological variables by using an array of standard analytical techniques. A core set of 10 laboratory experiments provides structured instruction and teaches the principles of modern physiological analyses. During week 11, students observe a demonstration of a plant response, where the underlying cause of the phenomenon is not evident. Working together in groups of three or four, students hypothesize on the physiological mechanisms that may be involved. After submitting a statement of hypothesis and a plan of study, each group then requests the necessary instrumentation, plant material and greenhouse and/or growth chamber space to conduct their experiments. Results of their experimentation are presented during week 15 in both written and oral formats. The approach appears to help students to integrate and connect learnings from earlier in the semester to solve a defined problem. Further, students learn how to judge the reliability of experimental results and to evaluate whether conclusions drawn are justified by the data.

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Enoch, Herbert Zvi. "Laboratory-Produced CO2 Calibration Gases." Plant Physiology 77, no. 1 (January 1, 1985): 243–44. http://dx.doi.org/10.1104/pp.77.1.243.

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7

Ali, Ahmad, and Wiwin Pramita Arif. "Developing of guidance for laboratory practice of islamic science-integrated plant anatomy-physiology." Biosfer 12, no. 1 (April 29, 2019): 70–82. http://dx.doi.org/10.21009/biosferjpb.v12n1.70-82.

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The research aims to develop a valid, effective, and practice guidance for laboratory practice of Islamic science-integrated plant anatomy-physiology. The study is development research of Plomp development model. The study consists of five phases, namely the preliminary investigation phase, design phase, realization or construction phase, test, evaluation, and revision phase, and implementation phase. Devices developed were tested to students of Biology Education Department, Universitas Islam Negeri (UIN) Alauddin, Makassar in the Even Semester 2017/2018 Academic Year. The research results indicate that the laboratory practice guidance developed has met valid criteria with content validation average of one practice criteria with device applicability in category three meaning that most of the devices are implemented. Effective criteria with 92% of students who performed the laboratory practice give positive responses to the overall item questioned, and 100% assistants provide positive response on 93.33% items asked.

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Gins, M. S., V. K. Gins, and A. A. Bayikov. "PRINCIPAL RESEARCH ON PHYSIOLOGY AND BIOCHEMISTRY OF VEGETABLES, FRUIT AND BERRIES CROPS WITH IMPROVED ANTIOXIDANTS CONTENT." Vegetable crops of Russia, no. 1 (March 30, 2011): 12–15. http://dx.doi.org/10.18619/2072-9146-2011-1-12-15.

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On 25th February, 2011 the jubilee international conference "The Role of Physiology and Biochemistry for Plant Introduction and Breeding of Vegetables, Fruit and Berries Crops and Medicinal Plants» was held in All-Russian Research Institute of Vegetable Breeding and Seed Production at laboratory of plant physiology and seed research and that was dedicated to 130th anniversary of Prof. Zhegalov's birth; and 80 years since the laboratory of plant physiology and seed research was organized. The major directions of plant physiology and biochemistry research in vegetables, fruit and berries crops that were presented by scientists from the former USSR republics and far abroad were reported in this article.

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G., D. A., and A. B. A. M. Baudoin. "Laboratory Exercises in Plant Pathology: An Instructional Kit." Mycologia 82, no. 3 (May 1990): 408. http://dx.doi.org/10.2307/3759919.

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10

Yuhendri, Rival. "EVEKTIFITAS PEMANFAATAN LABORATORIUM BIOLOGI STKIP PGRI SUMATERA BARAT TERHADAP PENINGKATAN PEMAHAMAN SISWA MAN 1 PADANG PARIAMAN." RANGKIANG: Jurnal Pengabdian Pada Masyarakat 1, no. 2 (March 23, 2020): 96–100. http://dx.doi.org/10.22202/rangkiang.2019.v1i2.3990.

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Biology laboratory has an important role in the learning process. One of them is to train students' skills in understanding the biological material they have learned in class. STKIP biology laboratory PGRI West Sumatra consists of basic laboratories, botanical laboratories and zoology laboratories and hospitals. Where each laboratory has different specifics, basic laboratories that lead more to general subjects are mediocre in general biology, basic chemistry and others. While in the botany laboratory it is more directed to the subject of plants such as plant morphology, plant anatomy, low plant taxonomy and others. While the zoology laboratory is more focused on subjects such as, animal structure, animal physiology, animal development, animal taxonomy and others. While the wire house is often used for courses in agricultural cultivation, plant physiology, plant ecology and others. MAN I Padang Pariaman School is a school that works closely with biological study programs. One form of collaboration carried out with learning to laboratories in biology study programs with the guidance of lecturers and teaching assistants. The results obtained after the learning students receive a lot of what they learn from what they have seen and they get from the lecturer.

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BARBARA, Gilson, and Alessandra de Lourdes BALLARIS. "A QUALIDADE FISIOLÓGICA DE SEMENTES DE CEREAIS SUBMETIDAS A DIFERENTES CONCENTRAÇÕES DE OZÔNIO." UNIFUNEC CIENTÍFICA MULTIDISCIPLINAR 10, no. 12 (October 20, 2021): 1–14. http://dx.doi.org/10.24980/ucm.v10i12.4412.

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No Brasil, o cultivo de milho, sorgo e feijão representa um dos maiores comodities econômicos, estando estes entre os cereais mais produzidos no país. O desempenho fisiológico destas culturas reside no somatório da conjugação de seus potenciais genéticos, condições edáfo-climáticas, práticas culturais, épocas de semeadura, população de plantas e da qualidade fisiológica das sementes, dentre outros fatores que podem afetar sua produtividade. O objetivo foi verificar a eficiência da utilização do gás ozônio e sua influência na qualidade fisiológica das sementes de milho, sorgo e feijão. O experimento foi conduzido no laboratório de sementes do Centro Universitário de Santa Fé do Sul – UNIFUNEC, no município de Santa Fé do Sul, SP, localizado à latitude 20º12'40" sul e a uma longitude 50º55'33" oeste, estando a uma altitude de 370 metros e caracterizando-se por apresentar clima tropical com estação seca. Os testes propostos foram os padrões de germinação, teste de tetrazólio e o índice de velocidade de germinação e de emergência. Os resultados obtidos caracterizam com um bom desenvolvimento das sementes tratadas, mantendo e aumentando o vigor e germinação. Em virtude dos estudos propostos neste trabalho, é possível concluir que a tecnologia com utilização de gás ozônio no tratamento de sementes de cereais proporcionou efeitos positivos na germinação das sementes. Destacaram-se resultados satisfatórios, mantendo-se e aumentando a germinação das sementes do milho e da cultura do feijão. Na cultura do sorgo, os resultados foram extremamente importantes para garantir e aumentar a qualidade de um lote de semente. As sementes de sorgo tratadas com ozônio tiveram seu vigor e poder de germinação aumentados em relação às testemunhas utilizadas. As sementes do milho e feijão garantiram o padrão de acordo com manual de Regras de Análises de Sementes (RAS). PHYSIOLOGICAL QUALITY OF CEREAL SEEDS SUBMITTED TO DIFFERENT OZONE CONCENTRATIONS ABSTRACT In Brazil, the cultivation of corn, sorghum, and beans represents one of the largest economic commodities, being among the most produced cereals in the country. The physiological performance of these crops is the sum of the combination of their genetic potentials, soil and climate conditions, cultural practices, sowing season, plant population and the physiological quality of the seeds, among other factors that may affect their productivity. This paper aims at verifying the efficiency of ozone gas use and its influence on the physiological quality of corn, sorghum, and bean seeds. The experiment was carried out in the seed laboratory of the University Center of Santa Fé do Sul - UNIFUNEC, in the city of Santa Fé do Sul, SP, located at latitude 20º12'40" south and longitude 50º55'33" west, at an altitude of 370 meters and characterized by a tropical climate with a dry season. The proposed tests were the standard germination test, the tetrazolium test and the germination speed and emergence index. The results obtained characterize a good development of the treated seeds, maintaining and increasing germination and vigor of the seeds. In view of the studies proposed in this paper, it is possible to conclude that the technology with the use of ozone gas in the treatment of cereal seeds provided positive effects on seed germination. The results were satisfactory, maintaining and increasing the germination of the seeds of the corn and bean crops. In sorghum culture, the results were crucially important to guarantee and increase the quality of a seed batch. The sorghum seeds treated with ozone had their vigor and germination power increased when compared with the controls used. The corn and bean seeds guaranteed the standard according to the International Rules for Seed Testing (ISTA) set. Keywords: Seed physiology. Ozonation. Seeds.

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12

Pringle, Anne, and James D. Bever. "Analogous effects of arbuscular mycorrhizal fungi in the laboratory and a North Carolina field." New Phytologist 180, no. 1 (October 2008): 162–75. http://dx.doi.org/10.1111/j.1469-8137.2008.02537.x.

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13

CHAMBERS, P. A., D. H. N. SPENCE, and D. C. WEEKS. "PHOTOCONTROL OF TURION FORMATION BY POTAMOGETON CRISPUS L. IN THE LABORATORY AND NATURAL WATER." New Phytologist 99, no. 2 (February 1985): 183–94. http://dx.doi.org/10.1111/j.1469-8137.1985.tb03648.x.

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14

Millar, Andrew J., Uriel Urquiza, Peter L. Freeman, Alastair Hume, Gordon D. Plotkin, Oxana Sorokina, Argyris Zardilis, and Tomasz Zielinski. "Practical steps to digital organism models, from laboratory model species to ‘Crops in silico." Journal of Experimental Botany 70, no. 9 (January 5, 2019): 2403–18. http://dx.doi.org/10.1093/jxb/ery435.

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15

Lange, Otto L., T. G. Allan Green, and Ulrich Heber. "Hydration‐dependent photosynthetic production of lichens: what do laboratory studies tell us about field performance?" Journal of Experimental Botany 52, no. 363 (October 1, 2001): 2033–42. http://dx.doi.org/10.1093/jexbot/52.363.2033.

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16

STROSS, R. G. "The temporal window of germination in oospores of Chara (Charophyceae) following primary dormancy in the laboratory." New Phytologist 113, no. 4 (December 1989): 491–95. http://dx.doi.org/10.1111/j.1469-8137.1989.tb00360.x.

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17

LEE, EDMUND T. Y., and MICHAEL J. BAZIN. "A laboratory scale air-lift helical photobioreactor to increase biomass output rate of photosynthetic algal cultures." New Phytologist 116, no. 2 (October 1990): 331–35. http://dx.doi.org/10.1111/j.1469-8137.1990.tb04722.x.

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18

Sarmiento, B. G., A. A. Distor, J. L. T. Guevara, D. E. Narvaez, R. S. A. Rebong, and R. M. B. Umayan. "Virtual Laboratory as A Learning Tool for Anatomy and Physiology Course." American Journal of Education and Technology 1, no. 2 (August 19, 2022): 22–28. http://dx.doi.org/10.54536/ajet.v1i2.491.

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The world is continuously suffering due to the COVID-19 pandemic. Online learning was implemented by the Philippine government which brought a serious problem in teaching science courses that requires conducting experiments in a laboratory facility. Thirty-six (36) Laguna University Science major students under the Bachelor of Secondary Education Program were selected as respondents in this study. The students' scores in the pre-test and post-test on plant and animal physiology were analyzed. The purpose of the Quasi-experimental research design was to evaluate the effectiveness of the intervention, Virtual Laboratory, as a learning tool for Anatomy and Physiology Course. Laboratory worksheets and modules were used to test the level of proficiency of the respondents in the pre-intervention stage. To alleviate the difficulty, a virtual laboratory in Anatomy and Physiology course was designed by the researchers. This laboratory was utilized by the respondents before answering the post-test worksheets. An Independent T-test was utilized to determine if there is a significant difference in the test scores before and after the intervention. A survey tool was used to gather data on students' perception on the effectiveness of the virtual laboratory. Based on the results, the virtual laboratory was an effective learning tool that improved students' academic performance in the Anatomy and Physiology course. Results showed that it reduced the time needed to understand the concepts within a topic and helped enhance the quality of the learning process. Therefore, this tool maybe adopted in other experimental-based science subjects.

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Marler, Thomas E., and Haluk M. Discekici. "Plants and CO2: A Quick and Easy Laboratory Exercise." HortTechnology 5, no. 4 (October 1995): 346–49. http://dx.doi.org/10.21273/horttech.5.4.346.

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A laboratory exercise is outlined in which breath is used as the source for elevating CO2. Single-plant enclosures are constructed by placing containers with stem cuttings within clear bags for maintaining high humidity during root initiation. These enclosures provide a restricted atmosphere in which elevated CO2 is adequately confined. The materials are inexpensive and readily available. The procedure is rapid, with results obtained in as few as 7 days. The increase in canopy and/or root growth as a result of elevated CO2 may be observed visually by younger audiences, or may be measured and analyzed in a manner dependent on the age group. The exercise generates an abundance of discussion and may be used to lead into many lectures on plant physiology, horticultural crop production, or global concepts of CO2 and the plant kingdom.

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Lenz, Anne-Kristin, Ulrike Bauer, and Graeme D. Ruxton. "An ecological perspective on water shedding from leaves." Journal of Experimental Botany 73, no. 4 (November 2, 2021): 1176–89. http://dx.doi.org/10.1093/jxb/erab479.

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Abstract Water shedding from leaves is a complex process depending on multiple leaf traits interacting with rain, wind, and air humidity, and with the entire plant and surrounding vegetation. Here, we synthesize current knowledge of the physics of water shedding with implications for plant physiology and ecology. We argue that the drop retention angle is a more meaningful parameter to characterize the water-shedding capacity of leaves than the commonly measured static contact angle. The understanding of the mechanics of water shedding is largely derived from laboratory experiments on artificial rather than natural surfaces, often on individual aspects such as surface wettability or drop impacts. In contrast, field studies attempting to identify the adaptive value of leaf traits linked to water shedding are largely correlative in nature, with inconclusive results. We make a strong case for taking the hypothesis-driven experimental approach of biomechanical laboratory studies into a real-world field setting to gain a comprehensive understanding of leaf water shedding in a whole-plant ecological and evolutionary context.

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Zhang, B., M. Chen, X. Zhang, H. Luan, S. Diao, Y. Tian, and X. Su. "Laboratory and field evaluation of the transgenic Populus alba x Populus glandulosa expressing double coleopteran-resistance genes." Tree Physiology 31, no. 5 (May 1, 2011): 567–73. http://dx.doi.org/10.1093/treephys/tpr032.

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THORBURN, P. J., G. R. WALKER, and J. P. BRUNEL. "Extraction of water from Eucalyptus trees for analysis of deuterium and oxygen-18: laboratory and field techniques." Plant, Cell and Environment 16, no. 3 (April 1993): 269–77. http://dx.doi.org/10.1111/j.1365-3040.1993.tb00869.x.

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23

Nunez-Olivera, E., J. Martinez-Abaigar, R. Tomas, N. Beaucourt, and M. Arroniz-Crespo. "Influence of Temperature on the Effects of Artificially Enhanced UV-B Radiation on Aquatic Bryophytes Under Laboratory Conditions." Photosynthetica 42, no. 2 (June 1, 2004): 201–12. http://dx.doi.org/10.1023/b:phot.0000040591.74037.f1.

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Potkay, Aaron, Marie‐Claire ten Veldhuis, Ying Fan, Caio R. C. Mattos, Gennady Ananyev, and G. Charles Dismukes. "Water and vapor transport in algal‐fungal lichen: Modeling constrained by laboratory experiments, an application for Flavoparmelia caperata." Plant, Cell & Environment 43, no. 4 (February 5, 2020): 945–64. http://dx.doi.org/10.1111/pce.13690.

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Barradas, Victor L., and Hamlyn G. Jones. "Responses of CO2assimilation to changes in irradiance: laboratory and field data and a model for beans (Phaseolus vulgarisL.)." Journal of Experimental Botany 47, no. 5 (1996): 639–45. http://dx.doi.org/10.1093/jxb/47.5.639.

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LILLEY, RICHARD, and JIM HARDIE. "Cereal aphid responses to sex pheromones and host-plant odours in the laboratory." Physiological Entomology 21, no. 4 (December 1996): 304–8. http://dx.doi.org/10.1111/j.1365-3032.1996.tb00869.x.

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Joseph, G. "Ethanol synthesis and aerobic respiration in the laboratory by leader segments of Douglas-fir seedlings from winter and spring." Journal of Experimental Botany 55, no. 399 (April 8, 2004): 1095–103. http://dx.doi.org/10.1093/jxb/erh116.

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AGUIRREZABAL, L. A. N., E. DELEENS, and F. TARDIEU. "Root elongation rate is accounted for by intercepted PPFD and source-sink relations in field and laboratory-grown sunflower." Plant, Cell and Environment 17, no. 4 (April 1994): 443–50. http://dx.doi.org/10.1111/j.1365-3040.1994.tb00313.x.

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Vitale, M., and F. Manes. "Role of changing environmental parameters in leaf gas exchange of Arbutus unedo L. assessed by field and laboratory measurements." Photosynthetica 43, no. 1 (March 1, 2005): 99–106. http://dx.doi.org/10.1007/s11099-005-0106-y.

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CLIPSON, N. J. W., J. W. G. CAIRNEY, and D. H. JENNINGS. "THE PHYSIOLOGY OF BASIDIOMYCETE LINEAR ORGANS. I. PHOSPHATE UPTAKE BY CORDS AND MYCELIUM IN THE LABORATORY AND THE FIELD." New Phytologist 105, no. 3 (March 1987): 449–157. http://dx.doi.org/10.1111/j.1469-8137.1987.tb00882.x.

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Hafizi, Z., and N. Nasr. "The Effect of Zinc Oxide Nanoparticles on Safflower Plant Growth and Physiology." Engineering, Technology & Applied Science Research 8, no. 1 (February 20, 2018): 2508–13. http://dx.doi.org/10.48084/etasr.1571.

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In this paper, a study of the effect of ZnO nanoparticles on safflower growth and physiology was performed. Each of these elements plays a particular role in the plant life, the presence of these elements is necessary for plant’s life cycle and growth. Zinc deficiency causes the biggest problems in safflower’s production. Considering the importance of nanoparticles in today's world, this research investigated the effect of Zinc oxide nanoparticles on the concentration of guaiacol peroxidase, polypeptide oxidase, dehydrogenase and malondialdehyde in four plant sample groups in greenhouse and laboratory conditions. Results of showed that malondialdehyde enzyme increased with different treatments of various concentrations of Zinc oxide. The enzyme guaiacol oxidase increased at concentrations of 100 mg/L and polyphenol oxide at concentrations of 10 and 500 mg/L and dehydrogenase in 1000 mg/L and decreased in other treatments. In addition to showing the effect of nanoparticles in plants, these findings determine the beneficial concentrations of nanoparticles that have a positive effect on the level of enzymes in plants.

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Akter, Shahida, Israt Jahan, Md Amir Hossain, and Mohammad Anwar Hossain. "Laboratory-and Field-Phenotyping for Drought Stress Tolerance and Diversity Study in Lentil (Lens culinaris Medik.)." Phyton 90, no. 3 (2021): 949–70. http://dx.doi.org/10.32604/phyton.2021.014411.

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Esposito, Raffaela, Ilaria Lusini, Kristýna Večeřová, Petra Holišová, Emanuele Pallozzi, Gabriele Guidolotti, Otmar Urban, and Carlo Calfapietra. "Shoot-level terpenoids emission in Norway spruce ( Picea abies ) under natural field and manipulated laboratory conditions." Plant Physiology and Biochemistry 108 (November 2016): 530–38. http://dx.doi.org/10.1016/j.plaphy.2016.08.019.

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Tan-Kristanto, Ariadne, Ary Hoffmann, Richard Woods, Phil Batterham, Christopher Cobbett, and Chantelle Sinclair. "Translational asymmetry as a sensitive indicator of cadmium stress in plants: a laboratory test with wild-type and mutant Arabidopsis thaliana." New Phytologist 159, no. 2 (August 2003): 471–77. http://dx.doi.org/10.1046/j.1469-8137.2003.00815.x.

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35

Marmann, Peter, Renate Wendler, Peter Millard, and H. Heilmeier. "Nitrogen storage and remobilization in ash (Fraxinus excelsior) under field and laboratory conditions." Trees 11, no. 5 (April 14, 1997): 298–305. http://dx.doi.org/10.1007/pl00009675.

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Myers, Marcella J., and Ann B. Burgess. "INQUIRY-BASED LABORATORY COURSE IMPROVES STUDENTS’ ABILITY TO DESIGN EXPERIMENTS AND INTERPRET DATA." Advances in Physiology Education 27, no. 1 (March 2003): 26–33. http://dx.doi.org/10.1152/advan.00028.2002.

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We redesigned our intermediate-level organismal physiology laboratory course to center on student-designed experiments in plant and human physiology. Our primary goals were to improve the ability of students to design experiments and analyze data. We assessed these abilities at the beginning and end of the semester by giving students an evaluation tool consisting of an experimental scenario, data, and four questions of increasing complexity. To control for nontreatment influences, the improvement scores (final minus initial score for each question) of students taking both the laboratory and the companion lecture course were compared with those of students taking the lecture course only. The laboratory + lecture group improved more than the lecture-only group for the most challenging question. This evidence suggests that our inquiry-based curriculum is achieving its primary goals. The evaluation tool that we developed may be useful to others interested in measuring experimental analysis abilities in their students.

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SCHNEIDER, THORSTEN, STEFAN SCHELOSKE, BOGDAN POVH, and KURT TRAXEL. "A METHOD FOR CRYOSECTIONING OF PLANT ROOTS FOR PROTON MICROPROBE ANALYSIS." International Journal of PIXE 12, no. 03n04 (January 2002): 101–7. http://dx.doi.org/10.1142/s0129083502000196.

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By building up a cryo-preparation laboratory a method was developed which allows us to prepare cryo sections of fully differentiated plant-root material, according to the requirements of the proton microprobe. Since cryo-preparation is the only possible method delivering reliable elemental distributions, this step was a fundamental for all our further investigations in plant root physiology. As an example, PIXE-investigations of a root section of a heavy metal hyper-accumulating plant Brassica juncea L. will be presented.

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GEORGE, T. S., A. E. RICHARDSON, P. A. HADOBAS, and R. J. SIMPSON. "Characterization of transgenic Trifolium subterraneum L. which expresses phyA and releases extracellular phytase: growth and P nutrition in laboratory media and soil." Plant, Cell & Environment 27, no. 11 (August 4, 2004): 1351–61. http://dx.doi.org/10.1111/j.1365-3040.2004.01225.x.

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Adhikari, Bhawana, Manish Adhikari, and Gyungsoon Park. "The Effects of Plasma on Plant Growth, Development, and Sustainability." Applied Sciences 10, no. 17 (August 31, 2020): 6045. http://dx.doi.org/10.3390/app10176045.

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Cold atmospheric or low pressure plasma has activation effects on seed germination, plant growth and development, and plant sustainability, and prior experimental studies showing these effects are summarized in this review. The accumulated data indicate that the reactive species generated by cold plasma at atmospheric or low pressure may be involved in changing and activating the physical and chemical properties, physiology, and biochemical and molecular processes in plants, which enhances germination, growth, and sustainability. Although laboratory and field experiments are still required, plasma may represent a tool for efficient adaptation to changes in the climate and agricultural environments.

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Messersmith, Calvin G. "“Our” Weed Science Society of America: In Transition." Weed Technology 12, no. 4 (December 1998): 764–69. http://dx.doi.org/10.1017/s0890037x00044687.

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Dr. Calvin G. Messersmith is Professor of Plant Sciences at North Dakota State University (NDSU), where he has been involved in teaching and research since 1966. He developed the undergraduate weed science option, the introductory weed science course, and the internship program for crop and weed science majors at NDSU. Dr. Messersmith introduced many teaching innovations into his undergraduate courses, including development of autotutorial laboratories, lecture and laboratory manuals, permanent plant mounts embedded in plastic resin, and educational films. Dr. Messersmith serves as coordinator of the departmental undergraduate teaching program, advisor for about 20 undergraduate students annually and assists in career placement. Dr. Messersmith has served as major professor for seven Ph.D. and eight M.S. graduates.Dr. Messersmith has specialized in perennial weed control, especially leafy spurge. He is coordinator of a multidisciplinary leafy spurge control project at NDSU that includes biological, chemical, cultural, and physical control. The project includes cooperating scientists from the Departments of Agricultural Economics, Animal and Range Sciences, Botany, Plant Sciences, Entomology, and Plant Pathology.Dr. Messersmith served the North Central Weed Science Society (NCWSS) as Editor of the Research Reports for 8 yr and was on the board of directors for about 16 yr, including 1 yr as President in 1985. Prior to becoming the WSSA Vice President in 1995, he served on the WSSA board of directors for 3 yr and was the first Editor who designed and launched Weed Technology from 1985 to 1990. Dr. Messersmith has been honored as an NCWSS Honorary Member and WSSA Fellow.Dr. Messersmith received his B.S. and M.S. degrees from the University of Nebraska and his Ph.D. degree from NDSU. He has received several awards for contributions to education, including the American Society of Agronomy CIBA-Geigy Award, the first NDSU-wide Odney Award for Excellence in Teaching, the FarmHouse Fraternity Master Builder of Men Award, the WSSA Outstanding Teacher Award, the Burlington Northern Foundation Faculty Achievement Award at NDSU, and the NACTA (National Association of Colleges and Teachers of Agriculture) Teaching Award of Merit.

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SCOTT, MARTHA G., and DOUGLAS W. LARSON. "THE EFFECT OF WINTER FIELD CONDITIONS ON THE DISTRIBUTION OF TWO SPECIES OF UMBILICARIA. III. CO2 EXCHANGE IN THALLI EXPOSED TO LABORATORY SIMULATIONS OF WINTER." New Phytologist 102, no. 2 (February 1986): 327–43. http://dx.doi.org/10.1111/j.1469-8137.1986.tb00587.x.

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ERLAND, SUSANNE, and BENGT SODERSTROM. "Effects of liming on ectomycorrhizal fungi infecting Pinus sylvestris L.. I. Mycorrhizal infection in limed humus in the laboratory and isolation of fungi from mycorrhizal roots." New Phytologist 115, no. 4 (August 1990): 675–82. http://dx.doi.org/10.1111/j.1469-8137.1990.tb00499.x.

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Ndihokubwayo, Kizito. "College Students Improvised Ideas during Physics Laboratory Activities." Journal of Classroom Practices 1, no. 1 (November 3, 2022): 1–9. http://dx.doi.org/10.58197/prbl/tbay8568.

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This study aims at checking college student-teachers’ transferability ideas from physics laboratory activities to improvised materials. We employed undergraduate students from the University of Rwanda College of Education to carry it out during their laboratory experiments session. Since these students are future secondary teachers, we first observed them performing Ohms Law, Faraday law, Wheatstone bridge, and Compass magnet experiments. We followed them, asking them to compare how they could improvise from what they did at school whenever there were no conventional materials. We found that students face challenges in performing provided experiments even if the instructional protocols are provided and receive laboratory technician support. These students could also not imagine how they could improvise these experiments. These results were caused by the fact that they do not possess improvisation skills, and few experiments were provided to them. In this regard, the author recommends that college lecturers not only increase laboratory experiments but also instruct their students by reflecting on their future careers.

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KNUDSEN, GEIR K., MARIE BENGTSSON, SVERRE KOBRO, GUNNHILD JAASTAD, TROND HOFSVANG, and PETER WITZGALL. "Discrepancy in laboratory and field attraction of apple fruit moth Argyresthia conjugella to host plant volatiles." Physiological Entomology 33, no. 1 (March 2008): 1–6. http://dx.doi.org/10.1111/j.1365-3032.2007.00592.x.

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Singh, B. P., and R. K. Birhman. "Laboratory Estimation of Field Resistance of Potato to Late Blight." Journal of Phytopathology 140, no. 1 (January 1994): 71–76. http://dx.doi.org/10.1111/j.1439-0434.1994.tb00178.x.

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Baranski, R., R. Krämer, and E. Klocke. "A Laboratory Leaf Assay of Carrot Susceptibility to Botrytis cinerea." Journal of Phytopathology 154, no. 10 (October 2006): 637–40. http://dx.doi.org/10.1111/j.1439-0434.2006.01165.x.

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Berhe, Muez, Berhanu Abraha Tsegay, and Geremew Terefe. "Studies on the Biology and Eco Physiology of Sesame Seed Bug, Elasmolomus Sordidus Fabricius, at Kafta - Humera Sesame Fields." Malaysian Journal of Medical and Biological Research 6, no. 2 (December 31, 2019): 133–42. http://dx.doi.org/10.18034/mjmbr.v6i2.484.

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The experiment was conducted in the plant protection laboratory of the Humera Agricultural Research Center to study the biology of sesame seed bug, Elasmolomus sordidus (Fabricius), Hemiptera: Lygaeidae. E.sordidus is considered as the most important harvest and post-harvest insect pest of sesame in North western Ethiopia. The rearing and other tests were conducted in the laboratory at 28-330C and 50 to 65% RH. The result of this laboratory investigation indicated that the mean egg incubation period was 5.4± 0.05 days while the total mean nymphal duration took 18.44±0.10. A mean adult lifespan of 20.24±0.19 days was recorded. The mean lifespan from egg to adult death was 44.08 days, which range from 32-54 days. The reproductive period was 7.08 ± 0.26 days and the peak laying period was on the first and second day of its reproductive days. Even though E.sordidus was present the whole year high outbreak was recorded at harvest (October) and continued up to January, which afterward declined until the next harvest time.

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Berhe, Muez, Berhanu Abraha Tsegay, and Geremew Terefe. "Studies on the Biology and Eco Physiology of Sesame Seed Bug, Elasmolomus Sordidus Fabricius, at Kafta - Humera Sesame Fields." Malaysian Journal of Medical and Biological Research 7, no. 1 (January 26, 2020): 13–22. http://dx.doi.org/10.18034/mjmbr.v7i1.484.

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The experiment was conducted in the plant protection laboratory of the Humera Agricultural Research Center to study the biology of sesame seed bug, Elasmolomus sordidus (Fabricius), Hemiptera: Lygaeidae. E.sordidus is considered as the most important harvest and post-harvest insect pest of sesame in North western Ethiopia. The rearing and other tests were conducted in the laboratory at 28-330C and 50 to 65% RH. The result of this laboratory investigation indicated that the mean egg incubation period was 5.4± 0.05 days while the total mean nymphal duration took 18.44±0.10. A mean adult lifespan of 20.24±0.19 days was recorded. The mean lifespan from egg to adult death was 44.08 days, which range from 32-54 days. The reproductive period was 7.08 ± 0.26 days and the peak laying period was on the first and second day of its reproductive days. Even though E.sordidus was present the whole year high outbreak was recorded at harvest (October) and continued up to January, which afterward declined until the next harvest time.

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Kistler, Logan, Vanessa C. Bieker, Michael D. Martin, Mikkel Winther Pedersen, Jazmín Ramos Madrigal, and Nathan Wales. "Ancient Plant Genomics in Archaeology, Herbaria, and the Environment." Annual Review of Plant Biology 71, no. 1 (April 29, 2020): 605–29. http://dx.doi.org/10.1146/annurev-arplant-081519-035837.

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The ancient DNA revolution of the past 35 years has driven an explosion in the breadth, nuance, and diversity of questions that are approachable using ancient biomolecules, and plant research has been a constant, indispensable facet of these developments. Using archaeological, paleontological, and herbarium plant tissues, researchers have probed plant domestication and dispersal, plant evolution and ecology, paleoenvironmental composition and dynamics, and other topics across related disciplines. Here, we review the development of the ancient DNA discipline and the role of plant research in its progress and refinement. We summarize our understanding of long-term plant DNA preservation and the characteristics of degraded DNA. In addition, we discuss challenges in ancient DNA recovery and analysis and the laboratory and bioinformatic strategies used to mitigate them. Finally, we review recent applications of ancient plant genomic research.

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Magnanou, Elodie, Jael R. Malenke, and M. Denise Dearing. "Hepatic gene expression in herbivores on diets with natural and novel plant secondary compounds." Physiological Genomics 45, no. 17 (September 1, 2013): 774–85. http://dx.doi.org/10.1152/physiolgenomics.00033.2013.

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Herbivores are predicted to evolve appropriate mechanisms to process the plant secondary compounds (PSCs) in their diet, and these mechanisms are likely specific to particular suites of PSCs. Changes in diet composition over evolutionary time should select for appropriate alterations in metabolism of the more recent dietary components. We investigated differences in gene expression profiles in the liver with respect to prior ecological and evolutionary experience with PSCs in the desert woodrat, Neotoma lepida. This woodrat species has populations in the Mojave Desert that have switched from feeding on juniper to feeding on creosote at the end of the Holocene as well as populations in the Great Basin Desert that still feed on the ancestral diet of juniper and are naïve to creosote. Juniper and creosote have notable differences in secondary chemistry. Woodrats from the Mojave and Great Basin Deserts were subjected to a fully crossed feeding trial on diets of juniper and creosote after which their livers were analyzed for gene expression. Hybridization of hepatic mRNAs to laboratory rat microarrays resulted in a total of 20,031 genes that met quality control standards. We analyzed differences in large-scale patterns of liver gene expression with respect to GO term enrichment. Diet had a larger effect on gene expression than population membership. However, woodrats with no prior evolutionary experience to the diet upregulated a greater proportion of genes indicative of physiological stress compared with those on their natural diet. This pattern may be the result of a naïve animal's attempting to mitigate physiological damage caused by novel PSCs.

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