Annuals and Herbaceous Perennials Tolerant or Resistant to Phytophthora Species in the Landscape1

Q2 Agricultural and Biological Sciences

Journal of environmental horticulture Pub Date : 2020-09-01 DOI:10.24266/0738-2898-38.3.107

M. Henson, S. Sharpe, I. Meadows

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引用次数: 1

Abstract

Plants of one or two cultivars of 16 annuals and 14 herbaceous perennials were evaluated based on desirability and anecdotal evidence of resistance to Phytophthora root or crown rot. Six plant cultivars served as susceptible controls. Three landscape beds were established in North Carolina and each was infested with three species of Phytophthora: P. nicotianae, P. drechsleri, and P. tropicalis. Plants were regularly rated for disease incidence and symptomatic plants were assayed to determine the presence of Phytophthora species. Ten cultivars of annuals and seven cultivars of herbaceous perennials did not exhibit symptoms of Phytophthora root or crown rot or other disease throughout the season (June 4 to October 15, 2018). Phytophthora spp. were recovered from seven and six cultivars of the evaluated annuals and herbaceous perennials, respectively. Phytophthora nicotianae, P. drechsleri, or P. cryptogea were recovered from a susceptible host in each landscape bed. P. tropicalis was recovered from one plant cultivar evaluated. Phytophthora cryptogea was recovered from three plant cultivars, although this species was not intentionally introduced in the landscape beds. We identified 22 plant cultivars within 13 herbaceous plant species that grew vigorously in landscape beds infested with species of Phytophthora. Index words: bedding plants, disease resistance, herbaceous perennials, landscape plants, Phytophthora nicotianae, Phytophthora drechsleri, Phytophthora tropicalis. Species used in this study: yarrow (Achillea millefolium L. ‘Desert Eve Red'), fernleaf yarrow (Achillea filipendulina Lam. ‘Moonshine Yellow'), angelonia (Angelonia angustifolia Benth. ‘ArchAngel Pink', ‘Serenita White'), annual vinca (Catharanthus roseus (L.) G. Don ‘Cora Apricot', ‘Cora Strawberry', ‘Pacifica Raspberry'), celosia (Celosia argentea L. ‘New Look'), tickseed (Coreopsis auriculata L. ‘Nana', ‘Yellow Jethro Tull'), purple coneflower (Echinacea purpurea (L.) Moench ‘Cheyenne Spirit', ‘PowWow Wild Berry'), blanket flower (Gaillardia x grandiflora Hort. ‘Goblin', ‘Mesa Bi-color'), Barberton daisy (Gerbera jamesonii Bolus ex Hooker f. ‘Crazy Daisy'), verbena (Glandularia canadensis ‘Homestead Purple'), >dusty miller (Jacobaea maritima (L.) Pelser & Meijden ‘Silver Dust'), New Guinea impatiens (Impatienshawkeri W.Bull ‘Hamony', ‘Sunpatiens Compact Orchid', ‘Sunpatiens Lilac'), sweet potato vine (Ipomoea batatas (L.) Lam. ‘Ace of Spades', ‘Bright Idea Tri-color'), West Indian lantana (Lantana camara L. ‘Miss Huff'), lantana (Lantana x hybrida ‘New Gold'), shasta daisy (Leucanthemum x superbum (Bergmans ex J.W. Ingram) Bergmans ex Kent. ‘Becky', ‘Snow Lady'), bee balm (Monarda didyma L. ‘Petite Delight', ‘Jacob Cline'), ornamental grass (Panicum virgatum L. ‘Rotstrahlbusch', ‘Shenandoah'), geranium (Pelargonium x hortorum L.H. Bailey (pro. sp.) ‘Bullseye Cherry', Calliope Dark Red'), calibrachoa (Petunia x calibrachoa ‘Super Cal'), petunia (Petunia x hybrida (Hooker) Vilmorin ‘Easy Wave Red', ‘Easy Wave White', ‘Wave Purple', ‘Yellow Madness', Violet Picotee'), annual phlox (Phlox drummondii Hook. ‘Intensia Red Hot', ‘Phlox Star'), garden phlox (Phlox paniculata L. ‘Amethyst True Gal'), black-eyed susan (Rudbeckia hirta L. ‘Indian Summer', ‘Prairie Sun'), mealy blue sage (Salvia farinacea Benth. ‘Victoria Blue'), African marigold (Tagetes erecta L. ‘Inca Yellow', ‘Proud Yellow'), French marigold (Tagetes patula L. ‘Disco Mix', ‘Disco Yellow'), narrowleaf zinnia (Zinnia angustifolia Kunth. ‘Star Orange', ‘Star White'), Phytophthora nicotianae Breda de Haan, Phytophthora cryptogea Pethybr. and Laff, Phytophthora drechsleri Tucker, Phytophthora tropicalis Aragaki and J.Y. Uchida, zinnia (Zinnia elegans Jacq. ‘Magellan Orange').

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景观中对疫霉耐或抗的一年生植物和草本多年生植物1

对16个一年生植物和14个草本多年生植物中的1个或2个品种的植株进行了对疫霉根腐病或冠腐病抗性的评估，并以6个品种作为敏感对照。在北卡罗来纳州建立了3个景观床，每个床都有3种疫霉侵染:烟草疫霉(P. nicotianae)、drechsleri疫霉和热带疫霉(P. tropicalis)。定期对植物进行发病率评定，并对有症状的植物进行检测，以确定疫霉菌的存在。10个一年生品种和7个草本多年生品种在整个季节(2018年6月4日至10月15日)未出现疫霉根腐病或冠腐病或其他疾病的症状。从被鉴定的一年生植物和草本多年生植物的7个和6个品种中分别检出疫霉。在每个景观层中，从一个感病寄主中分别恢复到烟草疫霉、黑霉疫霉和隐霉疫霉。从一个植物品种中回收了热带假单胞菌。从三个植物栽培品种中发现了隐疫霉，尽管该物种不是故意引入景观床的。我们从13种草本植物中鉴定出22个植物品种，这些植物在疫霉侵染的景观床中生长旺盛。索引词:垫层植物，抗病性，草本多年生植物，景观植物，烟草疫霉，干燥疫霉，热带疫霉。本研究使用的品种:蓍草(Achillea millefolium L. ' Desert Eve Red')、蕨类蓍草(Achillea filipendulina Lam.);“月光黄”)，白芷(angelonia angustifolia Benth。‘ArchAngel Pink’，‘Serenita White’)，一年生长春花(Catharanthus roseus, L.)Don ' Cora Apricot'， ' Cora Strawberry'， ' Pacifica Raspberry')， celosia argentea L. ' New Look'， tickseed (Coreopsis auriculata L. ' Nana'， ' Yellow Jethro Tull')，紫锥花(Echinacea purpurea (L.))Moench '夏安精灵'，' PowWow野莓')，毯花(盖拉迪亚×大花短。“地精”，“梅萨双色”)，巴伯顿雏菊(Gerbera jamesonii Bolus ex Hooker f.“疯狂的雏菊”)，马鞭草(Glandularia canadensis“Homestead Purple”)，>尘土磨坊(Jacobaea maritima (L.))。Pelser & Meijden ' Silver Dust')，新几内亚凤仙花(Impatienshawkeri W.Bull ' harmony '， ' Sunpatiens Compact Orchid'， ' Sunpatiens Lilac')，甘薯藤(Ipomoea batatas (L.))林。《黑桃a》、《Bright Idea三色》)、西印度蓝花菊(《赫夫小姐》)、蓝花菊(《蓝花菊》与杂交种《新黄金》)、沙斯塔雏菊(《菊》与超级菊花)(伯格曼前J.W.英格拉姆)伯格曼前肯特。' Becky'， ' Snow Lady')，蜂香(Monarda didyma L. ' Petite Delight'， ' Jacob Cline')，观赏草(Panicum virgatum L. ' Rotstrahlbusch'， ' Shenandoah')，天竺葵(Pelargonium x hortorum L.H. Bailey) (pro。(sp.) ' Bullseye Cherry'， Calliope暗红')，calibrhoa(矮牵牛花x calibrhoa ' Super Cal')，矮牵牛花(矮牵牛花x hybrida (Hooker) Vilmorin ' Easy Wave Red'， ' Easy Wave White'， ' Wave Purple'， ' Yellow Madness'， Violet Picotee')，一年生夹竹桃(phlox drummondii Hook)。' Intensia Red Hot'， ' Phlox Star')，花园夹竹桃(Phlox paniculata L. ' Amethyst True Gal')，黑眼苏珊(Rudbeckia hirta L. ' Indian Summer'， ' Prairie Sun')，粉蓝色鼠尾草(Salvia farinacea Benth.)。'维多利亚蓝')，非洲万寿菊(Tagetes erecta L. '印加黄'，'骄傲黄')，法国万寿菊(Tagetes patula L. ' Disco Mix'， ' Disco Yellow')，窄叶百日菊(zinnia angustifolia Kunth。‘星橙’，‘星白’)，烟草疫霉(Phytophthora nicotianae Breda de Haan)，隐疫霉(Phytophthora cryptoa Pethybr)。and Laff, drechsleri Tucker, Phytophthora Aragaki and J.Y. Uchida, zinnia elegans Jacq.;“麦哲伦橙”)。

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来源期刊

Journal of environmental horticulture Environmental Science-Environmental Science (miscellaneous)

CiteScore

1.90

自引率

0.00%

发文量