Cross Incompatibility between Rhododendron sect. Tsutsusi Species and Rhododendron japonicum (A. Gray) J.V. Suringar f. flavum Nakai
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چکیده
منابع مشابه
Flow Cytometric Analysis of Ploidy in Rhododendron (subgenus Tsutsusi)
Ploidy level was determined for six species and 88 cultivars of the Rhododendron subgenus Tsutsusi. High-resolution flow cytometry of nuclear DNA was performed on macerated plant tissue. All plants analyzed were diploid (2n = 26) with the exception of ‘Euratom’, ‘Euratom Orange’, and ‘Red Wing’, which were triploid (3n = 39), and ‘Casablanca Tetra’, which was found to be a cytochimera: mixoploi...
متن کاملStrong reproductive isolation despite occasional hybridization between a widely distributed and a narrow endemic Rhododendron species
Reproductive isolation (RI) plays an important role for speciation, but assessing reproductive barriers at all life-cycle stages remains challenging. In plants, most studies addressing the topic have been focusing on herbs with short generation times. The present study attempted to quantify several reproductive barriers between a hybridizing species pair of long-lived woody rhododendrons. Consi...
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Rhododendron arboreum is an evergreen shrub or small tree with a showy display of bright red flowers. The name ‘RHODODENDRON’ is derived from the Greek word ‘RHODO’ means rose & ‘DENDRON’ means tree. Rhododendron is the national flower of Nepal & is known as (Laligurans) & the state tree of Uttarakhand. It is called ‘Burans, Bras, Buras or Barahke-phool’ in local dialect. It is widely popular f...
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The most important hosts of Phytophthora ramorum in Europe are cultivated Rhododendron species and hybrids. Since November 2002, EU emergency phytosanitary measures are being taken to prevent the introduction and spread of P. ramorum in Europe. Surveys at all commercial Rhododendron-growing premises are part of these measures and have led to P. ramorum findings at 2 to 5% of the inspected sites...
متن کاملEvidence for passerine bird pollination in Rhododendron species
When insect activity is limited at low temperature, birds may be comparatively more important pollinators than insects for flowering plants. It has been thought that many large-flowered Rhododendron species are pollinated by local birds in the Himalayan regions because most of these species flower in spring at high elevation with cool atmospheric temperature. However, experimental evidence for ...
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ژورنال
عنوان ژورنال: Engei Gakkai zasshi
سال: 2004
ISSN: 1880-358X,0013-7626
DOI: 10.2503/jjshs.73.453