Journal of environmental horticulture最新文献_第7页

Plant Growth Regulator Impacts on Vegetative Cutting Production of Moroccan Pincushion (Pterocephalus depressus) Plants 植物生长调节剂对摩洛哥梧桐植物营养采伐产量的影响

Journal of environmental horticulture Pub Date : 2021-06-01 DOI: 10.24266/0738-2898-39.2.62

S. Markovic, J. Klett

{"title":"Plant Growth Regulator Impacts on Vegetative Cutting Production of Moroccan Pincushion (Pterocephalus depressus) Plants","authors":"S. Markovic, J. Klett","doi":"10.24266/0738-2898-39.2.62","DOIUrl":"https://doi.org/10.24266/0738-2898-39.2.62","url":null,"abstract":"\u0000 Moroccan pincushion (Pterocephalus depressus) is a drought-tolerant perennial that is being used in landscapes throughout arid areas of the western United States. This paper describes two experiments researching vegetative cutting production from stock plants. Moroccan pincushion stock plants received foliar applications of gibberellic acid (GA3), benzyladenine, ethephon, or auxin [indole-3-butyric acid (IBA)] plant growth regulators (PGR). Plant growth regulators were applied singularly and in combination with GA3 to determine efficacy on stock plant growth. A propagation study was conducted simultaneously to determine effects of these different PGR treatments applied to stock plants on the rooting of moroccan pincushion cuttings. The stock plant study showed GA3 + benzyladenine application increased cutting production over other PGR treatments. Fresh weight of moroccan pincushion cuttings did not differ among treatments. While cuttings did not differ in dry weight in experiment 1, statistical differences were observed in experiment 2. However, these differences in dry weight did not affect the quality of the cuttings. Cuttings from stock plants treated with GA3 + IBA treatment had the highest numerical growth index [(height + width + width)/3]. Cuttings from stock plants treated with GA3 alone or in combination with another PGR were all greater in average growth index and statistically differed from those without GA3 being applied. PGR treatments did not affect rooting percentages of the cuttings with nontreated stock plant cuttings successfully rooting at an average rate of 95%. However, GA3 + IBA was the only treatment where cuttings had 100% rooting for both experiments, indicating potential rooting benefits.\u0000 Index words: Plant growth regulator, propagation, Pterocephalus depressus, vegetative cuttings.\u0000 Species used in this study: Moroccan pincushion [Pterocephalus depressus Archibald].\u0000 Chemicals used in this study: gibberellic acid (GA3), benzyladenine, ethephon, indole-3-butyric acid (IBA).","PeriodicalId":15780,"journal":{"name":"Journal of environmental horticulture","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42354786","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

Impacts of Wire Basket Retention and Removal on Whole Tree Stability and Long-term Growth1 保留和移除铁丝网对整棵树稳定性和长期生长的影响1

Journal of environmental horticulture Pub Date : 2021-03-01 DOI: 10.24266/0738-2898-39.1.41

R. Hauer, Andrew K. Koeser, Jason W. Miesbauer, Jeff Edgar, David Kleinhuizen

{"title":"Impacts of Wire Basket Retention and Removal on Whole Tree Stability and Long-term Growth1","authors":"R. Hauer, Andrew K. Koeser, Jason W. Miesbauer, Jeff Edgar, David Kleinhuizen","doi":"10.24266/0738-2898-39.1.41","DOIUrl":"https://doi.org/10.24266/0738-2898-39.1.41","url":null,"abstract":"\u0000 When balled-and-burlapped trees are planted, a decision must be made regarding whether the wire basket, burlap, and other packing materials should be removed (completely or partially) or retained. While past research has failed to show a significant impact of either approach with regard to initial growth and establishment, many professionals still question whether a decision to leave the wire basket intact at planting will have longer-term impacts to tree health and stability. In this study, we revisit two nursery trials first initiated in 2011 and 2012 to assess the impact of burlap folding, and full wire basket removal, partial removal, or retention on tree growth and root anchorage five to six growing years after planting. We found that neither stem caliper (min P = 0.249) nor twig elongation (min P = 0.297) differed among removal treatments with the Norway maple (Acer platanoides L.) and ‘Skycole' honeylocust (Gleditsia triacanthos L. var. inermis) trees used in this study. Similarly, we were unable to detect any differences in rooting strength among the removal treatments tested (min P = 0.154). These results serve as further evidence that wire baskets are not a cause of early tree mortality or instability.\u0000 Index words: Arboriculture, biomechanics, growth and longevity, nursery production, static-pull test, transplanting, transplant shock.\u0000 Species used in this study: Norway maple (Acer platanoides L.); ‘Skycole' honeylocust (Gleditsia triacanthos L. var. inermis).","PeriodicalId":15780,"journal":{"name":"Journal of environmental horticulture","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47802033","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

Relative Susceptibility, Preference, and Suitability ofCarpinusTaxa for the Japanese Beetle (Coleoptera: Scarabaeidae) 1 carpinustaxa对日本甲虫(鞘翅目:金龟子科)的相对敏感性、偏好和适宜性

Journal of environmental horticulture Pub Date : 2021-03-01 DOI: 10.24266/0738-2898-39.1.11

F. Miller, Susan J. Wiegrefe

{"title":"Relative Susceptibility, Preference, and Suitability ofCarpinusTaxa for the Japanese Beetle (Coleoptera: Scarabaeidae) 1","authors":"F. Miller, Susan J. Wiegrefe","doi":"10.24266/0738-2898-39.1.11","DOIUrl":"https://doi.org/10.24266/0738-2898-39.1.11","url":null,"abstract":"Nineteen Carpinus taxa were evaluated in no-choice and multiple-choice laboratory feeding bioassays for susceptibility, preference, and suitability for the adult Japanese beetle (Popillae japonica Newman). No-choice laboratory feeding bioassays revealed that only three Carpinus taxa, Carpinus caucasica Grossh., Carpinus tschonoskii Maxim., and the hybrid Carpinus caroliniana x C. coreana, were significantly less susceptible and less suitable to feeding and for reproduction by Japanese beetles. Leaf tissue removed was related to the amount of frass produced, but was not related to leaf thickness, inner or outer leaf toughness, or fecundity. Frass production did not reflect fecundity. Hybridization may have either a positive or negative effect on host susceptibility, preference, and suitability. When a moderately preferred species such as C. caroliniana Walter or C. betulus L. is crossed with a species of equal or higher susceptibility, (i.e. C. coreana Nakai, Blume, or C. laxiflora (Sieb. and Zucc.) Blume) feeding preference increases. A “C. tschonskii factor” (Maxim.) appears to affect susceptibility and preference. There does not appear to be a large pool of Carpinus taxa suitable for future tree breeding programs in areas where Japanese beetle outbreaks are common. Potential use of Carpinus taxa in urban landscapes and forests is discussed.Index words: Susceptibility, preference, suitability, Japanese beetle, Popillia japonica, Carpinus.Species used in this study: Carpinus betulus L., C. caroliniana Walter, C. caucasica Grossh, C. cordata Blume, C. coreana Nakai, C. fargesii Franch, C. japonica Blume, C. laxiflora, (Sieb. and Zucc.) Blume, C. orientalis Mill, C. tschonoskii Maxim, C. turczaninowii Hance, C. betulus x tschonoskii, C. caroliniana x betulus, C. caroliniana x (C. betulus x tschonoskii), C. caroliniana x cordata, C. caroliniana x coreana, C. caroliniana x orientalis, C. caroliniana x tschonoskii, C. caroliniana x coreana, C. cordata x C. japonica, and, Sassafras albidum (Nutt.) Nees.","PeriodicalId":15780,"journal":{"name":"Journal of environmental horticulture","volume":"39 1","pages":"11-21"},"PeriodicalIF":0.0,"publicationDate":"2021-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46499366","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: 2

Rooting Response of Boxwood Cultivars to Hot Water Treatment and Thermal Sensitivity ofCalonectria henricotiaeandC. pseudonaviculatain Diseased Boxwood (Buxusspp.)1 黄杨木品种对热水处理的生根响应及黄杨木和黄杨木的热敏感性。黄杨(黄杨属

Journal of environmental horticulture Pub Date : 2021-03-01 DOI: 10.24266/0738-2898-39.1.1

N. Shishkoff, Megan E Miller, M. Cubeta

{"title":"Rooting Response of Boxwood Cultivars to Hot Water Treatment and Thermal Sensitivity ofCalonectria henricotiaeandC. pseudonaviculatain Diseased Boxwood (Buxusspp.)1","authors":"N. Shishkoff, Megan E Miller, M. Cubeta","doi":"10.24266/0738-2898-39.1.1","DOIUrl":"https://doi.org/10.24266/0738-2898-39.1.1","url":null,"abstract":"Boxwood blight is caused by Calonectria henricotiae (Che) and C. pseudonaviculata (Cps). Unrecognized symptoms on Buxus cuttings used for propagation could potentially serve as a source of inoculum and result in pathogen spread. In this study, cuttings of boxwood (Buxus spp.) cultivars ‘Justin Brouwers', ‘Nana', ‘Green Beauty', and ‘Green Velvet' were assessed for root production after exposure to 45 C (113 F) or 47.5 C (118 F) water for 0 to 60 minutes in 5 minute increments. The number of roots greater than 1 cm (0.4 in) in length produced by cuttings of all cultivars three months after treatment in 45 C water for up to 60 minutes was not statistically different from the non-immersed control. A similar response was observed for cuttings of all cultivars treated in 47.5 C water for up to 60 minutes, except for cv. ‘Nana,' which produced fewer roots than the non-immersed control after 35 minutes of exposure to heated water. Experiments conducted on diseased, detached boxwood leaves of susceptible cultivar ‘Justin Brouwers' at 47.5 C, 50 C (122 F) or 52.5 C (127 F) showed significantly reduced production of conidia and viability of Che and Cps after 25 to 30 minute exposure to 47.5 C water (44%) or 12 minute exposure to 50 C water (22%). After 8 minutes of exposure to 52.5 C water, little or no sporulation was observed for either pathogen.Index words: Boxwood blight, Calonectria pseudonaviculata, Calonectria henricotiae, Buxus, hot water treatment, rooting, cuttings, plant propagation.Species used in this study: Boxwood blight [Calonectria henricotiae Gehesquière, Heungens and J.A. Crouch and C. pseudonaviculata (Crous J.Z. Groenewald & C.F. Hill) L. Lombard, M.J. Wingf & Crous] Boxwood [Buxus sempervirens L. ‘Justin Brouwers'; Buxus sinica (Rehder & E. H. Wilson) M. Cheng var. insularis (Nakai) M. Cheng ‘Nana'; B. sempervirens ‘Suffruticosa'×B. sinica var. insularis ‘Green Beauty', and B. sempervirens ‘Suffruticosa' × B. sinica var. insularis ‘Green Velvet'].","PeriodicalId":15780,"journal":{"name":"Journal of environmental horticulture","volume":"39 1","pages":"1-10"},"PeriodicalIF":0.0,"publicationDate":"2021-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44011550","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

From Propagation to Field: Influence of Tray Design on Tree Seedling Quality and Performance1 从繁殖到田间:托盘设计对树苗品质和性能的影响

Journal of environmental horticulture Pub Date : 2021-03-01 DOI: 10.24266/0738-2898-39.1.33

D. McGrath, J. Henry, Ryan Munroe, Charlene Williams

{"title":"From Propagation to Field: Influence of Tray Design on Tree Seedling Quality and Performance1","authors":"D. McGrath, J. Henry, Ryan Munroe, Charlene Williams","doi":"10.24266/0738-2898-39.1.33","DOIUrl":"https://doi.org/10.24266/0738-2898-39.1.33","url":null,"abstract":"\u0000 This study evaluated the effects of low, moderate and high substrate exposure air-pruning propagation trays on eastern cottonwood (Populus deltoides W. Bartram ex Marshall ssp. deltoides) and black cherry (Prunus serotina Ehrh.) seedling root system quality and overall performance. Root system quality was characterized primarily by proportion of coarse root defects within the container imprint. Seedlings were evaluated after a nearly four-month commercial greenhouse production phase and one year after transplanting into a nursery field. Above and below-ground growth were measured at both time points. Proportions of coarse root defects, indicating degree of root deflection in container production, were persistent between greenhouse and field production phases. The Open (high substrate exposure) tray produced seedlings with roughly three times less deflected coarse root weight compared to the Closed Wall (low substrate exposure) tray for both species in both production phases. At neither production phase were there significant differences in above-ground growth among trays. This corroborates findings from other research studies that have found that variable root system quality does not always result in above-ground growth differences; and that when it does, differences in growth may take several years to manifest.\u0000 Index words:, tree seedling quality, root defects, transplant performance, above-ground growth.\u0000 Species used in this study: eastern cottonwood (Populus deltoides W. Bartram ex Marshall ssp. deltoides), black cherry (Prunus serotina Ehrh.).","PeriodicalId":15780,"journal":{"name":"Journal of environmental horticulture","volume":"39 1","pages":"33-40"},"PeriodicalIF":0.0,"publicationDate":"2021-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48961421","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: 3

High pH, Low Alkalinity Pond Water Used for Overhead Irrigation Does Not Affect Plant Growth of Select Flowering Shrubs1 高pH、低碱度池水架空灌溉对部分开花灌木植株生长无影响

Journal of environmental horticulture Pub Date : 2021-03-01 DOI: 10.24266/0738-2898-39.1.22

A. LeBude, J. Owen, C. Holmes

{"title":"High pH, Low Alkalinity Pond Water Used for Overhead Irrigation Does Not Affect Plant Growth of Select Flowering Shrubs1","authors":"A. LeBude, J. Owen, C. Holmes","doi":"10.24266/0738-2898-39.1.22","DOIUrl":"https://doi.org/10.24266/0738-2898-39.1.22","url":null,"abstract":"\u0000 In southeast U.S., pH of source water from ponds used for overhead-irrigating container crops can exceed the range (pH 5.8-7.0) for best management practices. Artificially maintaining this pH range is not common among producers using surface water for irrigation, nor is it known whether this would affect growth. Therefore, the objective was to test whether this source water affects growth of five flowering shrubs in nurseries in eastern North Carolina. Pond water at six nurseries with a pH range of 4.9-8.1 (control) was injected before irrigation with sulfuric acid (lower) or potassium bicarbonate (raise) onsite to maintain a pH of 5.8-6.2 (treatment). Ambient photosynthesis (Aambient) and stomatal conductance (gs) was measured in July, August, and September on leaves of forsythia (Forsythia x intermedia 'Mindor‘ ShowOff®) during irrigation runtime mini-experiments at three nurseries. For mini-experiments, pre- and post-treatment physiology was measured for plants receiving 0 (hand watered), 30, or 60 minutes of treated or nontreated overhead irrigation. Dry weight of all shrubs and gas exchange of forsythia was not affected by high pH, low alkalinity (<100 ppm) irrigation water. Southeastern producers using this source water for overhead irrigation may not need to adopt a system that reduces pH to improve growth.\u0000 Index words:, Container-grown, plant physiology, photosynthesis, stomatal conductance, ornamental.\u0000 Chemicals used in this study: Potassium bicarbonate, sulfuric acid.\u0000 Species used in this study: fragrant abelia, Zabelia tyaihyonii (Nakai) Hisauti & H.Hara 'SMNAMDS‘ Sweet Emotion®; butterfly bush, Buddleia x ‘Miss Molly'; border forsythia, Forsythia x intermedia ‘Mindor‘ Show Off®; panicled hydrangea, Hydrangea paniculata Siebold ‘SMHPLQF' Little Quick Fire®; landscape rose, Rosa x ‘ChewPatout' Oso Easy®.","PeriodicalId":15780,"journal":{"name":"Journal of environmental horticulture","volume":"39 1","pages":"22-32"},"PeriodicalIF":0.0,"publicationDate":"2021-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41511197","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

Seeing Red? The Role of Font Color, Size, and Sale Sign Location in Retail Garden Center Displays1 看到红色的吗?字体颜色、大小和销售标志位置在零售花园中心展示中的作用[j]

Journal of environmental horticulture Pub Date : 2020-12-01 DOI: 10.24266/0738-2898-38.4.120

B. Behe, M. Knuth, P. Huddleston, C. Hall

{"title":"Seeing Red? The Role of Font Color, Size, and Sale Sign Location in Retail Garden Center Displays1","authors":"B. Behe, M. Knuth, P. Huddleston, C. Hall","doi":"10.24266/0738-2898-38.4.120","DOIUrl":"https://doi.org/10.24266/0738-2898-38.4.120","url":null,"abstract":"The goal of this study was to better understand consumers' likelihood to buy a plant when the word “sale” was presented in red font on a white sign, with a range of font sizes, showing an equivalent discounted price in three ways (dollar amount, 25% percent off, and buy-3-get-1-free), with the sale sign location either on the left or right side of the display. Researchers constructed a partial factorial design with three plant types producing 16 images for the study. They recruited 154 subjects from two states. Results of the rating-based conjoint study revealed that plant type comprised 45% of the purchase decision, which was consistent with prior research. Price (23.8%) was the next most important factor in likely to buy followed by sale font size. Sale sign location and sale font color were similar and third and fourth, respectively, in relative importance. The synergistic effect of sale font size and color indicate that when red fonts were used for the word “sale” they should be larger than other font sizes and placed to the right in the display. Consumer gaze appeared to move from left to right as though study participants “read” the display. Results showed the red font had greater attention-grabbing power on the right side of the display and when it appeared in a larger or smaller font size.Index words: consumer, eye-tracking, price, survey, signage.Species used in this study: Pepper [Capsicum annuum L. (C. frutescens)], parsley Petroselinum crispum J. Hill, petunia (Petunia x hybrida Juss.), rosemary Rosmarinus officinalis L., sage (Salvia officinalis L.), tomato (Solanum lycopersicum L.).","PeriodicalId":15780,"journal":{"name":"Journal of environmental horticulture","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49244783","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: 4

Alkalinity of Irrigation Return Water Influences Nutrient Removal Efficacy of Floating Treatment Wetland Systems1 灌溉回水碱度对漂浮处理湿地系统养分去除效果的影响1

Journal of environmental horticulture Pub Date : 2020-12-01 DOI: 10.24266/0738-2898-38.4.128

Lauren M. Garcia Chance, J. Albano, Cindy M Lee, Ashley M. Rovder, S. White

{"title":"Alkalinity of Irrigation Return Water Influences Nutrient Removal Efficacy of Floating Treatment Wetland Systems1","authors":"Lauren M. Garcia Chance, J. Albano, Cindy M Lee, Ashley M. Rovder, S. White","doi":"10.24266/0738-2898-38.4.128","DOIUrl":"https://doi.org/10.24266/0738-2898-38.4.128","url":null,"abstract":"\u0000 Water quality concerns often prevent reuse of captured irrigation return water for irrigation of specialty crops. Prior research indicated alkalinity of specialty crop operation irrigation varies from 0 to >500 mg.L−1 ( >0.06 oz.gal−1) CaCO3 across the United States. Floating treatment wetlands (FTWs) are an option for remediation of nutrients in irrigation return water, but effects of variable alkalinity on nutrient removal efficiency of FTWs are unknown. An experimental FTW system was developed to quantify the effect of alkalinity on the growth and nutrient uptake capacity of three plant species. ‘Rising Sun' Japanese iris (Iris ensata ‘Rising Sun’ Thunb.), upright sedge (Carex stricta Lam.);, and switchgrass (Panicum virgatum L.). were grown for 6 weeks at one of five alkalinity treatment levels, representing the alkalinity range of nursery and greenhouse irrigation runoff: 0, 100, 200, 300, and 400 mg.L−1 CaCO3 (0, 0.01, 0.02, 0.04, 0.05 oz.gal−1 CaCO3). Overall, Japanese iris demonstrated consistent remediation across each alkalinity treatment for both nutrient load reduction and plant accumulation. Species of iris warrant greater consideration and use in bioremediation systems. Both upright sedge and switchgrass could be used in systems with appropriate alkalinity levels. Future work should consider assessing novel plants at different points within their growth cycle, extended exposure durations, and decreased hydraulic retention time.\u0000 Index words: Aquatic plant, nitrogen, phosphorus, sodium bicarbonate, nitrogen speciation.\u0000 Species Used in this study: ‘Rising Sun' Japanese iris (Iris ensata ‘Rising Sun' Thunb.); upright sedge (tussock sedge) (Carex stricta Lam.); switchgrass (Panicum virgatum L.).","PeriodicalId":15780,"journal":{"name":"Journal of environmental horticulture","volume":"38 1","pages":"128-142"},"PeriodicalIF":0.0,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44085235","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: 2

Increased Flower Production of Calibrachoa x hybrida by the Soil Fungus Mortierella elongata1 土壤真菌长形Mortierella对菜心花的增产作用

Journal of environmental horticulture Pub Date : 2020-12-01 DOI: 10.24266/0738-2898-38.4.114

Lindsey E. Becker, M. Cubeta

{"title":"Increased Flower Production of Calibrachoa x hybrida by the Soil Fungus Mortierella elongata1","authors":"Lindsey E. Becker, M. Cubeta","doi":"10.24266/0738-2898-38.4.114","DOIUrl":"https://doi.org/10.24266/0738-2898-38.4.114","url":null,"abstract":"\u0000 Calibrachoa (Calibrachoa x hybrida) is a highly valued solanaceous flowering ornamental plant, characterized by its drought-hardiness, abundant flowering, and diverse flower colors. Recently, the saprobic soil fungus Mortierella elongata was isolated as a root endophyte from eastern cottonwood (Populus deltoides) and identified as a potential biological amendment for bioenergy and food crops. Two greenhouse experiments were conducted by transplanting rooted cuttings of Calibrachoa cv. ‘Kabloom Deep Blue' into a potting media mixture amended with 1 or 2% volume mix ratio of millet seed colonized with one of four isolates of M. elongata. Plants were assessed weekly for flower production and 86 days post inoculation for leaf/stem, root, and total dry weight. M. elongata strain 624- significantly increased flower production compared to the non-inoculated millet seed controls at 6 and 7 wk post amendment in both experiments. Above and below ground vegetative dry weight for plants grown in potting media mixture amended with M. elongata isolates varied across isolates, fungal amendment concentrations, and experiments. Our results suggest that potting media mixture amended with M. elongata strain 624- can increase flower production of Calibrachoa during peak marketable periods.\u0000 Index words: Calibrachoa, plant growth promotion, plant reproduction, biological amendment.\u0000 Species used in this study: Calibrachoa (Calibrachoa x hybrida); Mortierella elongata Linnem.","PeriodicalId":15780,"journal":{"name":"Journal of environmental horticulture","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46512817","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: 4

Improving Ex Vitro Rooting and Acclimatization Techniques for Micropropagated American Chestnut1 板栗小种离体生根与驯化技术的改进1

Journal of environmental horticulture Pub Date : 2020-12-01 DOI: 10.24266/0738-2898-38.4.149

Allison D. Oakes, H. Pilkey, W. Powell

{"title":"Improving Ex Vitro Rooting and Acclimatization Techniques for Micropropagated American Chestnut1","authors":"Allison D. Oakes, H. Pilkey, W. Powell","doi":"10.24266/0738-2898-38.4.149","DOIUrl":"https://doi.org/10.24266/0738-2898-38.4.149","url":null,"abstract":"\u0000 Limited rooting and acclimatization success when micropropagating certain hardwood tree species may hinder conservation efforts of certain threatened and endangered species. Restoration efforts for such trees, such as the American chestnut [Castanea dentata (Marsh.) Borkh.], require a massive number of plantlets to be produced by micropropagation for testing, initial distribution, and orchard establishment. Therefore, increasing the number and quality of lab-produced plantlets is a key research focus. After previously determining that an ex vitro rooting system produced significantly more robust plantlets, we examined extending the time in elongation medium, rooting substrates, exogenous auxin applications, root-promoting substrate soaks, submerging the cut site, and light intensity. The most effective methods included seven weeks in elongation medium, using Jiffy peat pellets soaked in water as the rooting substrate, cutting off callus while submerged, then dipping in 0.31% IBA rooting gel, and placing plantlets in low light of 60 μmol·m-2·s-1 after rooting. By increasing the number of roots and improving acclimatization success, we can ensure that many more blight-tolerant American chestnuts will be available for field studies and eventual public distribution. Demonstrating the ecological safety and blight survival of these trees will help restore this foundational tree species and assist future restoration efforts for other threatened species.\u0000 Index words: Rooting, ex vitro, American chestnut, Castanea dentata, IBA, substrate.\u0000 Species used in this study: American chestnut, [Castanea dentata (Marsh.) Borkh.].\u0000 Chemicals used in this study: IBA (indole-3-butyric acid).","PeriodicalId":15780,"journal":{"name":"Journal of environmental horticulture","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47507393","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: 4