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Journal articles on the topic 'Magnolia grandiflora'

Author: Grafiati

Published: 12 December 2022

Last updated: 27 January 2023

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1

Guin, Jere D., Robert H. Schosser, and E. William Rosenberg. "Magnolia grandiflora Dermatitis." Dermatologic Clinics 8, no. 1 (January 1990): 81–84. http://dx.doi.org/10.1016/s0733-8635(18)30527-8.

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2

Luo, Xiao-Dong, Shao-Hua Wu, Yun-Bao Ma, Da-Gang Wu, and Jun Zhou*. "Sesquiterpenoids from Magnolia grandiflora." Planta Medica 67, no. 4 (2001): 354–57. http://dx.doi.org/10.1055/s-2001-14326.

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3

Gerasimchuk, V. N., and M. L. Novitsky. "The influence of edaphic factors on the vital state of large-flowered magnolia (<i>Magnolia grandiflora</i> L.). in the Nikitsky Botanical Gardens." Bulletin of the State Nikitsky Botanical Gardens, no. 140 (November 17, 2021): 16–24. http://dx.doi.org/10.36305/0513-1634-2021-140-16-24.

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The most widespread magnolia on the Southern coast of the Crimea and, in particular, in the Arboretum of the Nikitsky Botanical Gardens is the evergreen Magnolia grandiflora L., introduced in 1817. Currently, 28 generative specimens of Magnolia grandiflora of different ages grow in the Arboretum, including garden forms with different vital state. There are very few data on the relation of this species to soil conditions. For this reason, we have studied the influence of edaphic factors on the vital state of Magnolia grandiflora growing in the Arboretum of the Nikitsky Botanical Gardens. A number of limiting edaphic factors have been identified, the main of which is the high skeletal structure of the soil. The humus reserves in the soil have a positive effect on the vital state of trees. A high level of agricultural technology is the main method of improving the vital state of Magnolia grandiflora .

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4

C, Ramyashree, and Hemalatha Kamurthy. "ANTINOCICEPTIVE ACTIVITY OF MAGNOLIA GRANDIFLORA LINN. LEAVES." International Journal of Research in Ayurveda and Pharmacy 11, no. 6 (December 30, 2020): 56–59. http://dx.doi.org/10.7897/2277-4343.1106184.

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Magnolia grandiflora (Magnoliaceae) is an evergreen tree with fragrant and showy flowers native to southeastern USA but widely cultivated all over the world and used in cosmetics industry in treatment of skin diseases. To estimate the different extracts of Magnolia grandiflora leaves by performing pharmacological screening of analgesic activity (Hot plate method and tail immersion method). In the present study the two methods were performed the mice was placed on a hot plate maintained at the temperature of 55 ± 1°C and the pain reaction time (PRT) or latency period determined with a stop watch was recorded and then about 2-3cm of the tail of each of the mice was dipped into a water bath containing warm water maintained at a temperature of 50 ± 1°C and the time taken for the mice to flick its tail or withdraw it from the warm water known as the pain reaction time (PRT) was recorded. Here, we report on the Pharmacological investigation of different extracts of Magnolia grandiflora Linn leaves. The results were demonstrated on that ethyl acetate extract (P < 0.01) exhibited significant dose dependent analgesic activity in all tested models for analgesia. The time course for analgesia revealed maximum activity after 30 min in both tail immersion and hot plate methods, which was prolonged to 24 hours. The study concludes that the ethyl acetate extract from leaves of Magnolia grandiflora possess analgesic activity at doses 250, 500 and 100 mg/kg I. p.

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5

Vázquez-García, J. Antonio, Miguel Ángel Pérez-Farrera, Nayely Martínez-Meléndez, Gregorio Nieves-Hernández, and Miguel Ángel Muñiz-Castro. "Magnolia mayae (Magnoliaceae), a new species from Chiapas, Mexico." Botanical Sciences 90, no. 2 (June 1, 2012): 109. http://dx.doi.org/10.17129/botsci.478.

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Se describe e ilustra una especie nueva de Magnolia de Chiapas, México. Se proporciona un cuadro de caracteres morfológicos que contrasta las especies de Magnolia Sect. Magnolia de Chiapas. Magnolia mayae es similar a M. grandiflora, pero difiere de ésta última en tener hojas más largas, menos coriáceas y abaxialmente glabras vs abaxialmente densamente ferrugíneo pubescentes; flores más pequeñas con menos de la mitad de estambres y con menor número de carpelos.

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6

Baysal-Gurel, Fulya, Ravi Bika, Christina Jennings, Cristi Palmer, and Terri Simmons. "Comparative Performance of Chemical and Biological-based Products in Management of Algal Leaf Spot on Magnolia." HortTechnology 30, no. 6 (December 2020): 733–40. http://dx.doi.org/10.21273/horttech04692-20.

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Magnolia trees (Magnolia sp.) are a popular choice for consumers when choosing flowering woody plants for landscapes. Magnolia species grow in a wide variety of both temperate and tropical locations. Southern magnolia (Magnolia grandiflora) is one of the more popular magnolias due to its pleasing aesthetics: large showy flowers in a range of colors and evergreen foliage. However, magnolias can be affected by algal leaf spot. Algal leaf spot is caused by Cephaleuros virescens, which is a widespread plant parasitic green alga. There has been little research on how to treat algal leaf spot on magnolia plants. This study focuses on identifying effective biological- and chemical-based fungicides for the management of algal leaf spot disease of magnolia plants. Two experiments were conducted in a randomized complete block design with six replications per treatment and a total of 12 treatments, including a nontreated control. The first experiment (Expt. 1) was conducted in a shade house (56% shade) at McMinnville, TN, using southern magnolia plants. The second experiment (Expt. 2) was conducted at a commercial nursery in McMinnvillle, TN, in a field plot planted with ‘Jane’ magnolia (Magnolia liliiflora ‘Nigra’ × Magnolia stellata ‘Rosea’). The algal leaf spot disease severity, disease progression, plant marketability and growth parameters were evaluated. In both experiments, all treatments reduced algal leaf spot disease severity and disease progress in comparison with the nontreated control. In Expt. 1, copper octanoate, copper oxychloride, chlorothalonil water-dispersible granules, chlorothalonil suspension concentrate, didecyl dimethyl ammonium chloride, azoxystrobin + benzovindiflupyr, hydrogen peroxide + peroxyacetic acid, and mono- and di-potassium salts of phosphorus acid + hydrogen peroxide reduced the disease severity and disease progress the most and were not statistically different from one another. In Expt. 2, azoxystrobin + benzovindiflupyr, didecyl dimethyl ammonium chloride, and copper oxychloride significantly reduced disease severity and disease progress (area under disease progress curve). Treatments had no deleterious effect on plant growth parameters such as height and width, and no phytotoxicity of applied treatments or defoliation was observed. Treated magnolia plants had better plant marketability compared with the nontreated control plants. The findings of this study will help growers to achieve better management of algal leaf spot disease on magnolia trees.

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7

Lindstrom, Orville M., and Michael A. Dirr. "Cold Hardiness of Magnolia grandiflora L. Cultivars." Journal of Environmental Horticulture 9, no. 3 (September 1, 1991): 116–18. http://dx.doi.org/10.24266/0738-2898-9.3.116.

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Abstract Established cultivars of Magnolia grandiflora L. with observed cold hardiness limits and recently introduced cultivars with unknown cold hardiness limits were subjected to laboratory cold hardiness evaluation. The laboratory cold hardiness data corresponded closely to the observed field performance of ‘Edith Bogue’, ‘Little Gem’, ‘Spring Grove #16’, and ‘Spring Grove #19’. ‘Edith Bogue’ is considered the most cold hardy cultivar under landscape conditions. It also proved the most cold hardy in laboratory tests with leaves and stems hardy to at least − 24°C (−11°F) and −27°C (−17°F) over the three test dates. ‘Little Gem’, the least cold hardy under field conditions, was also the least cold hardy in laboratory tests. The Spring Grove cultivars survived −32°C (−25°F) in 1976 and 1983 and −30°C (−22°F) in 1989 under landscape conditions. Laboratory test data corroborated observed field hardiness. Three recent introductions, ‘Bracken's Brown Beauty’, ‘Phyllis Barrow’ and ‘Select #3’ showed different laboratory cold hardiness profiles. ‘Bracken's Brown Beauty’ developed the greatest stem cold hardiness followed by ‘Select #3’ and ‘Phyllis Barrow’. ‘Select #3’ and ‘Phyllis Barrow’ exhibited similar leaf cold hardiness, while ‘Bracken's Brown Beauty’ had less hardy leaves. Results indicated that promising clones of Magnolia grandiflora could be laboratory tested for cold hardiness with the resultant data used to predict survivability and geographic adaptability.

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8

You, CJ. "Dothiorella magnoliae, a new species associated with dieback of Magnolia grandiflora from China." Mycosphere 8, no. 2 (2017): 1031–41. http://dx.doi.org/10.5943/mycosphere/8/2/6.

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9

Daubenmire, Rexford. "The Magnolia grandiflora-Quercus virginiana Forest of Florida." American Midland Naturalist 123, no. 2 (April 1990): 331. http://dx.doi.org/10.2307/2426561.

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10

Hensley, David, Robert McNiel, and Richard Sundheim. "Management Influences on Growth of Transplanted Magnolia Grandiflora." Arboriculture & Urban Forestry 14, no. 8 (August 1, 1988): 204–7. http://dx.doi.org/10.48044/jauf.1988.049.

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Container-grown Magnolia grandiflora were planted in spring and fall with or without hardwood mulch and a complete fertilizer. Fertilizer was placed either in the bottom of the planting hole, mixed with the backfill, or surface applied after planting. Growth measurements were made during 3 seasons. Height growth was not influenced by planting date but was reduced the first season as a result of mulching. After 22 months, however, mulched plants were significantly larger than controls. Fertilization at planting resulted in significant height increases at every evaluation, but fertilizer location was not a factor. Spring planting, mulching, and fertilization resulted in significant increases in stem diameter. Spring planting, mulching and soil incorporation of fertilizer resulted in significantly more branches per plant during the third season.

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11

Hussien, Taha, Ahmed Ahmed, Mohamed El-Maghraby, and Ahmed Abou-Douh. "CHEMICAL INVESTIGATION OF SECONDARY METABOLITES FROM MAGNOLIA GRANDIFLORA." Sphinx Journal of Pharmaceutical and Medical Sciences 1, no. 1 (April 10, 2021): 49–54. http://dx.doi.org/10.21608/sjpms.2021.190420.

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12

Ding, Lin-Fen, Jia Su, Zheng-Hong Pan, Zhi-Jun Zhang, Xiao-Nian Li, Liu-Dong Song, Xing-De Wu, and Qin-Shi Zhao. "Cytotoxic sesquiterpenoids from the leaves of Magnolia grandiflora." Phytochemistry 155 (November 2018): 182–90. http://dx.doi.org/10.1016/j.phytochem.2018.08.006.

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13

Wang, Yuan, Ruimin Mu, Xiangrong Wang, Sixiu Liu, and Zhengqiu Fan. "Chemical composition of volatile constituents of Magnolia grandiflora." Chemistry of Natural Compounds 45, no. 2 (March 2009): 257–58. http://dx.doi.org/10.1007/s10600-009-9292-3.

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14

ElGwedy, Huda, Ali Abido, Mohamed ElTorky, Bothina Weheda, and Moahmed Gaber. "In Vitro Propagation and Ex Vitro Acclimatization of Magnolia (Magnolia grandiflora, Linn) Trees." Journal of the Advances in Agricultural Researches 20, no. 3 (October 1, 2015): 498–517. http://dx.doi.org/10.21608/jalexu.2015.161560.

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15

van Iersel, Marc W., and Orville M. Lindstrom. "Temperature Response of Whole-plant CO2 Exchange Rates of Magnolia (Magnolia grandiflora L.)." HortScience 33, no. 3 (June 1998): 511d—511. http://dx.doi.org/10.21273/hortsci.33.3.511d.

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Photosynthesis and respiration temperature-response curves are useful in predicting the ability of plants to perform under different environmental conditions. Whole crop CO2 exchange of two groups of magnolia `Greenback' plants was measured over a 26 °C temperature range. Net photosynthesis (Pnet) increased from 2 to 17% C and decreased again at higher temperatures. The Q10 for Pnet decreased from ≈4 at 6 °C to 0.5 at 24 °C. The decrease in Pnet at temperatures over 17 °C was caused by a rapid increase in dark respiration (Rdark) with increasing temperature. The Q10 for Rdark was estimated by fitting an exponential curve to data, resulting in a temperature-independent Q10 of 2.8. Gross photosynthesis (Pgross), estimated as the sum of Rdark and Pnet, increased over the entire temperature range (up to 25 °C). The Q10 for Pgross decreased with increasing temperature, but remained higher than 1. The data suggest that high respiration rates may be the limiting factor for growth of magnolia exposed to high temperatures, since it may result in a net carbon loss from the plants. At temperatures below 5 °C, both Pnet and Rdark become low and the net CO2 exchange of the plants would be expected to be minimal.

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16

Appleton, Bonnie, Roger Huff, and Susan French. "Evaluating Trees for Saltwater Spray Tolerance for Oceanfront Sites." Arboriculture & Urban Forestry 25, no. 4 (July 1, 1999): 205–10. http://dx.doi.org/10.48044/jauf.1999.030.

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Trees growing along the major resort area thoroughfare of the city of Virginia Beach are subjected to saltwater spray from the Atlantic Ocean. Despite the city's desire to plant trees for shade along this thoroughfare, none of 8 species that were reported to be salt tolerant and that met city design requirements were aesthetically acceptable after 1 year in moderate and high wind exposure locations. Species tested were loquat (Eriobotrya japonica), thomless honeylocust (Cleditsia triacanthos var. inermis), Chinese flametree (Koelreuteria bipinnata), goldenraintree (K paniculata), fruitless sweetgum (Liquidambar styraciflua 'Rotundiloba'), dwarf southern magnolia (Magnolia grandiflora 'Little Gem'), sweetbay magnolia (M. virginiana), and lacebark elm (Ulmus parvifolia 'King's Choice').

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17

Vastag, E., S. Orlović, A. Konôpková, D. Kurjak, C. Cocozza, E. Pšidová, K. Lapin, L. Kesić, and S. Stojnić. "Magnolia grandiflora L. shows better responses to drought than Magnolia × soulangeana in urban environment." iForest - Biogeosciences and Forestry 13, no. 6 (December 31, 2020): 575–83. http://dx.doi.org/10.3832/ifor3596-013.

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18

Mohua Yang, Zhihui Li, Youan Liu, Liqun Huang, Yan Yang, and Fang Geng. "STUDY ON DIURNAL VARIATION OF PHOTOSYNTHESIS IN MAGNOLIA GRANDIFLORA L. AND MAGNOLIA DENUDATE DESR." Acta Horticulturae, no. 769 (June 2008): 433–40. http://dx.doi.org/10.17660/actahortic.2008.769.62.

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19

Bakhramov, Ruziboy, Xamza Yuldashev, Feruza Tokhtaboeva, Ergashali Ro'zimatov, Gulmira Ergasheva, and Saodat Mirzaeva. "Seed Reproduction technology of the Magnolia grandiflora from seeds." E3S Web of Conferences 304 (2021): 03004. http://dx.doi.org/10.1051/e3sconf/202130403004.

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This article highlights the results obtained on the basis of scientific research carried out in 2019-2020 on the technology of reproduction from the seeds of Magnolia grandiflora plant in the farmer’s farm named “Saydullo Temirov” specialized in the cultivation of landscape trees and shrubs located in the Uighur village of Pakhtaobod District of Andijan region. As a result of the study, determination of seed stratification time, planting time and methods, as well as maintenance work were determined, and conclusions were made.

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20

El–Boraie, E., Hekmat Massoud, and M. Badawya. "PHYSIOLOGICAL STUDIES ON SEED GERMINATION OF Magnolia grandiflora L." Journal of Plant Production 1, no. 6 (June 1, 2010): 793–804. http://dx.doi.org/10.21608/jpp.2010.86408.

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21

Bastidas Ramı́rez, B. E., N. Navarro Ruı́z, J. D. Quezada Arellano, B. Ruı́z Madrigal, M. T. Villanueeva Michel, and P. Garzón. "Anticonvulsant effects of Magnolia grandiflora L. in the rat." Journal of Ethnopharmacology 61, no. 2 (June 1998): 143–52. http://dx.doi.org/10.1016/s0378-8741(98)00028-2.

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22

Lee, Hak-Ju, M. Khan, Ha-Young Kang, Don-Ha Choi, Park Mi-Jin, and Lee Hyun-Jung. "Rare natural products from the wood of Magnolia grandiflora." Chemistry of Natural Compounds 46, no. 2 (May 2010): 289–90. http://dx.doi.org/10.1007/s10600-010-9591-8.

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23

Li, Hong-Mei, Su-Rong Zhao, Qiang Huo, Tao Ma, Hao Liu, Jae kyoung Lee, Young-Soo Hong, and Cheng-Zhu Wu. "A new dimeric neolignan from Magnolia grandiflora L. seeds." Archives of Pharmacal Research 38, no. 6 (September 6, 2014): 1066–71. http://dx.doi.org/10.1007/s12272-014-0476-4.

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24

Santamour, Frank, and Louise Riedel. "Susceptibility of Various Landscape Trees to Root-Knot Nematodes." Arboriculture & Urban Forestry 19, no. 5 (September 1, 1993): 257–59. http://dx.doi.org/10.48044/jauf.1993.040.

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Young plants of one species of each of 17 genera (Aesculus, Ailanthus, Celtis, Fagus, Ginkgo, Gleditsia, Juglans, Koelreuteria, Liquidambar, Madura, Magnolia, Pyrus, Robinia, Sassafras, Sophora, Ulmus, Zelkova) and three species each of Betula and Prunus were inoculated with the four common root-knot nematodes (Meloidogyne spp.). Of 23 tree species tested, the majority were susceptible to one or more of the nematodes but Ailanthus altissima, Fagus grandifolia, Gleditsia triacanthos, Juglans nigra, Liquidambar styraciflua, Madura pomifera, Magnolia grandiflora, Prunus avium, Pyrus calleryana, and Sassafras albidum exhibited a tolerant or resistant response to all of the nematodes.

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25

Gilman, Edward. "Effect of Root Pruning Prior to Transplanting on Establishment of Southern Magnolia in the Landscape." Arboriculture & Urban Forestry 18, no. 4 (July 1, 1992): 197–200. http://dx.doi.org/10.48044/jauf.1992.039.

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Roots of field-grown southern magnolia (Magnolia grandiflora) were pruned once during dormancy, following the first shoot growth flush or after the second growth flush, prior to transplanting in the winter. During the first year after transplanting, root pruned trees grew at a slightly faster rate than unpruned trees but growth rates were similar for root pruned and unpruned trees the second and third year after transplanting. There was nodifference in post-transplantgrowth among root pruning treatments. Trees required, at most, 1 year per inch of trunk caliper to become established in the landscape.

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26

Preuett, Jason A., Daniel J. Collins, Douglas Luster, and Timothy L. Widmer. "Screening Selected Gulf Coast and Southeastern Forest Species for Susceptibility to Phytophthora ramorum." Plant Health Progress 14, no. 1 (January 2013): 17. http://dx.doi.org/10.1094/php-2013-0730-01-rs.

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Phytophthora ramorum, the causal agent of sudden oak death, poses a threat to woody plants in the rest of the United States. Several plant species native to Gulf Coast and southeastern US forests were tested for reaction to P. ramorum, including eastern baccharis (Baccharis halmifolia), spicebush (Lindera benzoin), yaupon (Ilex vomitoria), southern magnolia (Magnolia grandiflora), sweetbay magnolia (M. virginiana), Virginia creeper (Parthenocissus quinquefolia), black willow (Salix nigra), and baldcypress (Taxodium distichum). The foliage of each species was inoculated with a zoospore suspension and placed in a dew chamber for 5 days. The average percentage of leaf area necrosis was 0.2, 4.9, 27.9, 32.1, 8.6, 1.5, 1.1, 0.2, and 5.0% for inoculated eastern baccharis, spicebush, yaupon, southern magnolia, sweetbay magnolia, Virginia creeper (Louisiana), Virginia creeper (Maryland), black willow, and baldcypress, respectively. Comparison of the percent necrotic leaf area between inoculated and non-inoculated plants showed significant differences (P ≤ 0.05) for yaupon (P = 0.0008), southern magnolia (P = 0.001), and sweetbay magnolia (P = 0.0009). The other species did not show significant differences although infection was confirmed on spicebush, Virginia creeper, and baldcypress. This is a first report of yaupon, sweetbay magnolia, and baldcypress being hosts of P. ramorum. Accepted for publication 2 April 2013. Published 30 July 2013.

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Burger, David W., Pavel Svihra, and Richard Harris. "Treeshelter Use in Producing Container-grown Trees." HortScience 27, no. 1 (January 1992): 30–32. http://dx.doi.org/10.21273/hortsci.27.1.30.

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Treeshelters were used for the nursery production of Cedrus deodara Loud. (deodar cedar), Quercus ilex L. (holly oak), and Magnolia grandiflora L. (southern magnolia) trees growing in 19-liter containers. Air temperature, relative humidity, and CO, concentration were higher inside the treeshelters than outside. Trees grown inside treeshelters were 74% to 174% taller than trees grown without shelters. Trunk caliper of Magnolia and Quercus was not affected, however, for Cedrus trees caliper was larger for trees grown without a shelter. Upon removal of the shelter, Cedrus trees were incapable of supporting their own weight. Lateral branch development was inhibited and leaf senescence was greater with Magnolia trees grown in a shelter. Quercus trees grown in shelters were ready to be transplanted into the landscape. Water use was similar for trees grown with or without shelters. Trees grown in shelters had lower root fresh weights.

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Martini, Chris A., Dewayne L. Ingram, and Terril A. Nell. "Growth and Photosynthesis of Magnolia grandiflora `St. Mary' in Response to Constant and Increased Container Volume." Journal of the American Society for Horticultural Science 116, no. 3 (May 1991): 439–45. http://dx.doi.org/10.21273/jashs.116.3.439.

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Growth of Magnolia grandiflora Hort. `St. Mary' (southern magnolia) trees in containers spaced 120 cm on center was studied for 2 years. During the 1st year, trees were grown in container volumes of 10, 27, or 57 liter. At the start of the second growing season, trees were transplanted according to six container shifting treatments [10-liter containers (LC) both years, 10 to 27LC, 10 to 57LC, 27LC both years, 27 to 57LC, or 57LC both years]. The mean maximum temperature at the center location was 4.8 and 6.3C lower for the 57LC than for the 27 and 10LC, respectively. Height and caliper, measured at the end of 2 years, were” greatest for magnolias grown continuously in 27 or 57LC. Caliper was greater for trees shifted from 10LC to the larger containers compared with trees grown in 10LC both years. Trees grown in 10LC both years tended to have fewer roots growing in tbe outer 4 cm of the growing medium at the eastern, southern, and western exposures. During June and August of the 2nd year, high air and growth medium temperatures may have been limiting factors to carbon assimilation. Maintenance of adequate carbon assimilation fluxes and tree growth, when container walls are exposed to solar radiation, may require increasing the container volume. This procedure may be more important when daily maximum air temperatures are lower during late spring or early fall than in midsummer, because low solar angles insolate part of the container surface.

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29

Ferguson, James, Bala Rathinasabapathi, and Clinton Warren. "Southern Redcedar and Southern Magnolia Wood Chip Mulches for Weed Suppression in Containerized Woody Ornamentals." HortTechnology 18, no. 2 (January 2008): 266–70. http://dx.doi.org/10.21273/horttech.18.2.266.

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Wood chip mulches from southern redcedar (Juniperus silicicola) and southern magnolia (Magnolia grandiflora) were evaluated for their effectiveness in weed control in nursery containers. In greenhouse tests, southern redcedar and southern magnolia wood chip mulches significantly inhibited the germination of redroot pigweed (Amaranthus retroflexus) and large crabgrass (Digitaria sanguinalis). In a field trial, nursery containers with ‘Carolina Beauty’ crape myrtle plants (Lagerstroemia indica) were sown with large crabgrass and redroot pigweed seeds, mulched with southern redcedar or southern magnolia wood chips, and compared with plants without mulch and plants treated with a mixture of isoxaben and trifluralin (Snapshot). Wood chips from both southern redcedar and southern magnolia were as effective as a mixture of isoxaben and trifluralin in suppressing weed growth in nursery containers. The wood chip mulches had no inhibitory effect on the growth of crape myrtle plants. In a similar, longer-term field trial using containerized dogwood (Cornus florida) plants sown with large crabgrass and redroot pigweed, the southern redcedar wood chip mulch was most effective in weed suppression when used in combination with a low dose of the chemical herbicide.

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30

Haynes, C. L., O. M. Lindstrom, M. A. Dirr, and R. Severson. "194 COLD HARDINESS AND CARBOHYDRATE CONTENT OF FOUR CULTIVARS OF FIELD-GROWN SOUTHERN MAGNOLIA." HortScience 29, no. 5 (May 1994): 457a—457. http://dx.doi.org/10.21273/hortsci.29.5.457a.

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Cold hardiness and carbohydrate content of 4 cultivars of field-grown southern magnolia (Magnolia grandiflora L.) were determined monthly during the 1992-1993 winter. Initially, `Claudia Wannamaker', `Little Gem', `Timeless Beauty', and `Victoria' had similar stem and leaf cold hardiness estimates of -6C in October. However, by February `Claudia Wannamaker' and `Victoria' stems were 6 and 3C more cold hardy than `Little Gem' and `Timeless Beauty' stems. `Claudia Wannamaker' leaves were also 6C more cold hardy than `Little Gem' and `Timeless Beauty' leaves in February. Carbohydrate analysis indicates increases in oligosaccharides during cold acclimation in fall.

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31

Schühly, Wolfgang, Samir A. Ross, Zlatko Mehmedic, and Nikolaus H. Fischer. "Essential Oil Analysis of the Follicles of Four North American Magnolia Species." Natural Product Communications 3, no. 7 (July 2008): 1934578X0800300. http://dx.doi.org/10.1177/1934578x0800300715.

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The chemical composition of the essential oils obtained by steam distillation of fruits (follicles) of Magnolia fraseri Walt., M. tripetala L., M. acuminata L., and M. grandiflora L., collected in the Southeastern United States, were studied by GC/MS. A total of 35 out of 41 components were identified, most of which were monoterpenes and sesquiterpenes. Among the four investigated species, only few similarities in the compound patterns were found. The major constituents (> 10% of the essential oil) were found to be trans-nerolidol (20.0%) and 9-oxofarnesol (11.0%) in M. acuminata, β-pinene (26.3%) and β-myrcene (13.1%) in M. fraseri, β-elemene (12.2%) in M. grandiflora and bornyl acetate (17.0%), and β-caryophyllene (21.0%) and α-humulene in M. tripetala.

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Lindstrom, Orville M. "The Use of Leaf Parts to Estimate the Cold Hardiness of Southern Magnolia (Magnolia grandiflora L.)." HortScience 27, no. 3 (March 1992): 247–49. http://dx.doi.org/10.21273/hortsci.27.3.247.

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Whole, half, and quarter leaves and leaf disks were used to make laboratory estimations of the cold hardiness of Magnolia grandiflora. The effects of ice nucleation temperatures, length of exposure to nucleating temperatures, rates of temperature drop, thawing regimes, and methods of injury analysis were investigated for each leaf type in the fall and midwinter. In general, whole and half leaves responded more consistently to freezing tests than did quarter leaves and leaf disks. The most critical factors in the freezing procedure are the temperature at which the samples are nucleated with ice crystals and the regime in which the samples are warmed. These data suggest that whole and half leaves can effectively be used to reliably predict the cold hardiness of southern magnolia leaves.

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Augé, Robert M., and Ann J. W. Stodola. "Analysis of Water Potential Isotherms in Two Ornamental Shade Tree Species Entering Winter Dormancy." Journal of the American Society for Horticultural Science 114, no. 4 (July 1989): 666–73. http://dx.doi.org/10.21273/jashs.114.4.666.

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Abstract Osmotic adjustment in response to onset of winter dormancy was characterized in well-watered, potted sweetgum (Liquidambar styraciflua L.) and southern magnolia (Magnolia grandiflora L.) growing outdoors in Knoxville, Tenn. Analyses of water potential isotherms indicated that adjustment occurred in both species, with osmotic potential (ψπ) at full turgor decreasing 0.8 MPa in sweetgum (by the time of first color, 27 Oct.) and 1.0 MPa in magnolia (by 1 Dec.). Osmotic adjustment occurred despite the fact that plants did not suffer osmotic stress; morning and afternoon leaf relative water content (RWC) and leaf water potential (ψ) remained high throughout the fall. Leaf conductance was halved in sweetgum and doubled in magnolia as the autumn progressed. A correlation was found in magnolia between turgid : dry weight ratio and ψπ at full turgor. Tissue elasticity decreased somewhat, as the elastic modulus increased ≈2 to 3 MPa in each species through the autumn. Water potential isotherms changed most dramatically through the autumn in magnolia. Initially, ψ was −1 MPa at 82% RWC and, by December, leaves were able to withstand ψs of −3 MPa before RWC dropped to 82%. These changes are similar to those commonly reported as responses to drought or salinity.

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Nassar, D., H. Hammad, and F. Reda. "BOTANICAL STUDIES AND BREAKING SEED DORMANCY OF Magnolia grandiflora L." Egyptian Journal of Agricultural Sciences 60, no. 3 (July 1, 2009): 282–95. http://dx.doi.org/10.21608/ejarc.2009.215866.

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Liu, J., J. Xiao, J. Zhou, G. Cai, X. Li, and J. Lu. "Alternaria alternata Causing Leaf Spot on Magnolia grandiflora in China." Plant Disease 103, no. 10 (October 2019): 2672. http://dx.doi.org/10.1094/pdis-04-19-0828-pdn.

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Lee, Sungbeom, and Joseph Chappell. "Biochemical and Genomic Characterization of Terpene Synthases in Magnolia grandiflora." Plant Physiology 147, no. 3 (May 8, 2008): 1017–33. http://dx.doi.org/10.1104/pp.108.115824.

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37

Jacyno, John M., Nicola Montemurro, Arthur D. Bates, and Horace G. Cutler. "Phytotoxic and antimicrobial properties of cyclocolorenone from Magnolia grandiflora L." Journal of Agricultural and Food Chemistry 39, no. 6 (June 1991): 1166–68. http://dx.doi.org/10.1021/jf00006a036.

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Abdelgaleil, Samir A. M., and Fumio Hashinaga. "Allelopathic potential of two sesquiterpene lactones from Magnolia grandiflora L." Biochemical Systematics and Ecology 35, no. 11 (November 2007): 737–42. http://dx.doi.org/10.1016/j.bse.2007.06.009.

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39

Ferchaud, Vanessa, Yadong Qi, Veronica Manrique, and Kit Chin. "Localization and Quantification of Ultraviolet Radiation Absorbing Compounds in Leaves of Southern Magnolia (Magnolia grandiflora L.)." Microscopy and Microanalysis 27, S1 (July 30, 2021): 2290–92. http://dx.doi.org/10.1017/s1431927621008230.

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40

Stone, Bram W. G., and Colin R. Jackson. "Biogeographic Patterns Between Bacterial Phyllosphere Communities of the Southern Magnolia (Magnolia grandiflora) in a Small Forest." Microbial Ecology 71, no. 4 (February 16, 2016): 954–61. http://dx.doi.org/10.1007/s00248-016-0738-4.

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41

Flechtmann, Carlos Holger Wenzel, James Amrine, and Dalva Luiz de Queiroz. "First record of Tetra magnolivora (Keifer, 1939) (Acari, Eriophyidae) in Brazil." Pesquisa Florestal Brasileira 37, no. 90 (June 30, 2017): 225. http://dx.doi.org/10.4336/2017.pfb.37.90.1196.

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Tetra magnolivora (Keifer, 1939) (Acari, Eriophyidae), combinação nova, foi observada infestando plantas de Magnolia grandiflora L., em áreas urbanas de Curitiba, PR, Brasil. Este ácaro foi observado em altas populações em plantas de magnólia, causando encarquilhamento, distorção e decréscimo de crescimento em folhas infestadas. Este é o primeiro registro para o Brasil de T. magnolivora e aqui apresentamos uma nova combinação.

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42

Plugatar, Yu V., and V. N. Gerasimchuk. "Evaluation of the vital state of Magnolia grandiflora L. in the Arboretum of the Nikitsky Botanical Gardens using the method of ultrasound tomography." Plant Biology and Horticulture: theory, innovation, no. 155 (November 16, 2020): 7–16. http://dx.doi.org/10.36305/2712-7788-2020-2-155-7-16.

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As a result of instrumental diagnostics of the state of trunk wood, the level of phytopathogenic damage of the most old-age specimens of Magnolia grandiflora L. in the Arboretum of the Nikitsky Botanical Gardens is estimated. Digital two-dimensional images of the trunk wood were obtained, and the relative indicators of the degree of its destruction were characterized. The results of the research allowed us to identify some patterns in the nature of the distribution of destructions in the trunk wood of M. grandiflora . It was found that of the six studied specimens of M. grandiflora , the greatest destruction of trunk wood was found in two 130-year-old trees growing in The Upper Arboretum Park. There was no correlation between the presence and degree of destruction of M. grandiflora trunk wood and the age of the trees examined. The use of the ultrasound tomography method expands the possibilities of diagnostics of phytopathogenic lesion of the trunk wood. The combination of visual assessment and instrumental diagnostics of trunk wood allows us to obtain more complete information about the vital state of trees.

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Haynes, C. L., M. A. Dirr, and R. Severson. "562 PB 409 THE EFFECT OF PHOTOPERIOD ON THE COLD HARDINESS AND CARBOHYDRATE CONTENT OF TWO CULTIVARS OF SOUTHERN MAGNOLIA." HortScience 29, no. 5 (May 1994): 512b—512. http://dx.doi.org/10.21273/hortsci.29.5.512b.

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The cold hardiness of Magnolia grandiflora `Claudia Wannamaker' and `Little Gem' was determined under 8, 12 and 16 hour daylengths. Temperature was maintained at 25C day and 20C night. In addition, specific and total carbohydrates of both cultivars were analyzed. Cold hardiness and carbohydrate content were tested at the beginning (0 week), middle (5 week), and end (9 week) of the study. As expected, both southern magnolia cultivars were more cold hardy after 9 weeks at 8 hour daylengths with -9C cold hardiness estimates, as compared to 12 and 16 hour daylengths. The 12 and 16 hour daylengths resulted in similar cold hardiness estimates of -6C after 9 weeks. Additional cold hardiness and carbohydrate information will be presented.

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Ingram, Dewayne L., Uday Yadav, and Catherine A. Neal. "Production System Comparisons for Selected Woody Plants in Florida." HortScience 22, no. 6 (December 1987): 1285–87. http://dx.doi.org/10.21273/hortsci.22.6.1285.

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Abstract Quercus virginiana Mill., Magnolia grandiflora L., Liquidambar styraciflua L., Ulmus parvifolia Jacq. ‘Drake’, Lagerstroemia indica L., Ilex opaca Ait. ‘East Palatka’, and Pinus elliottii Engelm. were transplanted from 3-liter containers into 36-cm-diameter fabric Field-Gro containers, directly in the field into 36-cm-diameter auger-dug holes, or into 36-cm-diameter × 33-cm-tall black plastic containers. After 1 year, measured growth parameters of the Magnolia, Ulmus, Lagerstroemia, and Pinus were not affected by production system. Dry weight of Quercus and Liquidambar roots in the “harvest zone” were greater for trees grown in the fabric Field-Gro containers than those grown directly in the field. Quercus height and total carbohydrate content of Quercus and Magnolia primary root samples were increased by the fabric container. The above-ground container system clearly was inferior to the field-grown systems for production of the Quercus and Liquidambar under the conditions of this study.

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HOLLERMAN, WILLIAM A., GARY A. GLASS, RICHARD GRECO, CHANGGENG LIAO, and DONNA J. O'KELLY. "PIXE AND NAA ANALYSIS OF MERCURY IN A STANDARD SET OF SOUTHERN MAGNOLIA WOOD SAMPLES." International Journal of PIXE 13, no. 03n04 (January 2003): 107–14. http://dx.doi.org/10.1142/s0129083503000154.

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Several southern magnolia (magnolia grandiflora) tree samples, with known concentrations of mercury, were analyzed using particle induced x-ray emission (PIXE) and neutron activation analysis (NAA). Results from the PIXE measurements indicate that the average mercury absorption percentage was found to be 85 ± 4%. The distribution of mercury was found to be reasonably homogeneous over the sample surface. However, small variations in mercury concentration are most likely caused by the structure of cellulose in the wood. Mercury in the samples appears to be stable to a total integrated charge of 10 μC. Three mercury L-shell x-rays are easily observed in the resulting PIXE spectrum. Using PIXE, the mercury detection limit was calculated to be approximately 1 ppm. With one exception, the measured NAA mercury concentrations were larger than the corresponding mass-based values. The NAA mercury detection limit for the southern magnolia samples was estimated to be about 0.017 ppm (17 ppb).

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46

McCracken, T. Patrick, Christopher J. Catanzaro, and Ted E. Bilderback. "Rooting of ‘Brown Velvet’ Southern Magnolia Stem Cuttings as Influenced by Medium and Auxin Treatment." Journal of Environmental Horticulture 14, no. 3 (September 1, 1996): 158–59. http://dx.doi.org/10.24266/0738-2898-14.3.158.

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Abstract Terminal stem cuttings of ‘Brown Velvet’ Southern magnolia (Magnolia grandiflora L. ‘Brown Velvet’) were treated with 0.3% indole-3-butyric acid (IBA) in talc, or 0.5% naphthaleneacetic acid (NAA) quick dip + 0.3% IBA in talc, or 0.5% NAA + 1.0% IB A quick dip. Rooting media included pine bark, perlite, or combinations of bark and perlite at the following ratios: 3:1, 1:1, 1:3 (by vol). Cuttings were rooted in a greenhouse mist bed supplied with bottom heat. Rooting percentage was unaffected by media with the exception of a decreased response in perlite. Root length and secondary root formation was greater with pine bark than with perlite, while the bark/perlite blends provided an intermediate response. Increased auxin concentrations produced more primary roots but reduced formation of secondary roots. However, rooting percentage was not affected by auxin treatment. Results suggest that medium selection is more important than auxin source or delivery method in the rooting of ‘Brown Velvet’ Southern magnolia.

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47

Fare, Donna C., Patricia Knight, Charles H. Gilliam, and James Altland. "Weed Control for Pot-In-Pot Production using Preemergence Herbicides." Journal of Environmental Horticulture 23, no. 4 (December 1, 2005): 204–11. http://dx.doi.org/10.24266/0738-2898-23.4.204.

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Abstract Four experiments were conducted to investigate herbicides currently labeled for field and/or container production for use in pot-in-pot production. Southern magnolia (Magnolia grandiflora L.), red maple (Acer rubrum Spach. ‘Autumn Flame’ and ‘Franksred’), ornamental pear (Pyrus calleryana Decne. ‘Bradford’ and ‘Cleveland Select’), river birch (Betula nigra L.), green ash (Fraxinus pennsylvanica Marsh. and F. pennsylvanica Marsh.‘Marshall's Seedless’), and zelkova (Zelkova serrata Spach ‘Village Green’) were evaluated for herbicide tolerance. Barricade 65WG, Surflan 4AS, and Pendulum 60WDG, used alone or in combination with Princep and Gallery 75 DF, had no adverse effect on tree shoot growth or trunk caliper growth when applied as a directed band application. Weed control varied depending upon local site conditions, herbicide rate and weed species.

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Mohamed, S. M., E. M. Hassan, and N. A. Ibrahim. "Cytotoxic and antiviral activities of aporphine alkaloids of Magnolia grandiflora L." Natural Product Research 24, no. 15 (September 16, 2009): 1395–402. http://dx.doi.org/10.1080/14786410902906959.

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49

Guerra-Boone, Laura, Rocío Álvarez-Román, Ricardo Salazar-Aranda, Anabel Torres-Cirio, Verónica Mayela Rivas-Galindo, Noemí Waksman de Torres, Gloria María González González, and Luis Alejandro Pérez-López. "Chemical Compositions and Antimicrobial and Antioxidant Activities of the Essential Oils from Magnolia grandiflora, Chrysactinia mexicana, and Schinus molle Found in Northeast Mexico." Natural Product Communications 8, no. 1 (January 2013): 1934578X1300800. http://dx.doi.org/10.1177/1934578x1300800133.

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The essential oils from Magnolia grandiflora and Chrysactinia mexicana leaves, and from Schinus molle leaves and fruit, were characterized by gas chromatography/flame-ionization detection and gas chromatography/mass spectrometry. Twenty-eight compounds from M. grandiflora leaves were identified (representing 93.6% of the total area of the gas chromatogram), with the major component being bornyl acetate (20.9%). Colorless and yellow oils were obtained from the C. mexicana leaves with 18 (86.7%) and 11 (100%) compounds identified, respectively. In both fractions, the principal component was sylvestrene (36.8% and 41.1%, respectively). The essential oils of S. molle leaves and fruit were each separated into colorless and yellow fractions, in which 14 (98.2) and 20 (99.8%) compounds were identified. The main component was α-phellandrene in all fractions (between 32.8% and 45.0%). The M. grandiflora oil displayed antifungal activity against five dermatophyte strains. The oils from S. molle and M. grandiflora leaves had antimicrobial activity against Staphylococcus aureus and Streptococcus pyogenes, which cause skin infections that potentially may lead to sepsis. However, the antioxidant activities of all oils were small (half maximal effective concentration values >250 μg/mL).

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Gilman, Edward F., and Michael E. Kane. "Growth and Transplantability of Magnolia grandiflora Following Root Pruning at Several Growth Stages." HortScience 25, no. 1 (January 1990): 74–77. http://dx.doi.org/10.21273/hortsci.25.1.74.

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Roots of field-grown southern magnolia (Magnolia grandiflora L.) were pruned once during dormancy, following the first shoot growth flush or after the second growth flush or twice at the following times: during dormancy and following first growth flush, during dormancy and following second growth flush, following first and second growth flush before transplanting in the winter. By the end of the growing season, root pruning at all stages of growth reduced leaf number, tree height, trunk caliper, and total tree leaf area and weight compared with unpruned controls. Total root weight was less for trees pruned during dormancy or following the first growth flush. Root pruning increased the proportion of fine roots (0- to 5-mm-diameter class) to coarse roots (> 5- to 10-mm-diameter class). Shoot: root dry weight ratios at transplanting were not affected by root pruning. Root-pruned trees grew at a faster rate following transplanting than unpruned trees. Despite these initial differences. trees in all treatments were the same size 1 year after transplanting.

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