Interspecific variations in responses of Festuca rubra and Trifolium pratense to a severe clipping under environmental changes
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Keywords:
Festuca rubra
Tussock
Specific leaf area
Clipping (morphology)
Festuca
Taking Festuca rubra varieties of‘Red festuca'and‘Benjamin'from space flight as materials,the mutagenic effect of space flight on the two varieties of Festuca rubrain SP2 were studied.The results showed that the variability coefficient of plant height,grass layer height,length of leaf,width of leaf,ear length,number of spikelets and seeds number per spikelet in the two materials were higher than those of the earth control,and these traits had produced two-way mutations.Some traits of plant height,grass layer height,length of leaf and ear length in the two materials had apositive tendency,the width of leaf tended to narrowing trend;the number of spikelets of‘Red festuca'tended to increasing trend and seeds number per spikelet tended to decreasing trend,the number of spikelets of‘Benjamin'tended to decreasing trend and seeds number per spikelet tended to increasing trend.The variability changes of SP2 offspring showed that space treatment provide new germplasm for Festuca rubra breeding effectively.
Festuca rubra
Festuca
Germ plasm
Winter wheat
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By common consent two taxa of Festuca rubra s.l. occur in sandy outer dunes along the N.W. European coasts. Festuca juncifolia St. Amans is considered to be a typical grass of Ammophiladunes. Festuca rubra subsp. arenaria (Osb.) Richt. could be found on almost fixed dunes. The only usable character mentioned in morphological descriptions, is formed by the sclerenchyma in the leafblades. In Festuca juncifolia the sclerenchyma must be present in a thick continuous layer. In Festuca rubra subsp. arenaria the sclerenchyma must consist of separate strands. In 1966 and 1967 58 samples of Festuca-plants, both vegetative shoots and culms, were collected on the outmost dune ridge on the island of Voorne (Netherlands). Almost all plants investigated appeared to possess separate sclerenchyma strands. From this it could be concluded that the Voorneplants belong to the taxon Festuca rubra subsp. arenaria. However, the authors prefer to follow KJELLQVIST (1964). According to this author the size of the sclerenchyma depends strongly on the environmental conditions, and the two traditional dune forms of Festuca rubra are identical.
Festuca rubra
Festuca
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Festuca
Festuca rubra
Festuca arundinacea
Endophyte
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Festuca rubra
Festuca
Typification
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Observation and measurements of some traits of <em>Festuca rubra</em> L., subsp. <em>fallax </em>(Thuill.) Hack. ecotypes were made in 1995-1997 using samples selected from natural habitats and collected in Grassland Experimental Station in Sosnowica. High differentiation of traits under study and their correlations were found. Valorized ecotypes are good material for new varieties breeding.
Ecotype
Festuca rubra
Festuca
Festuca pratensis
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Festuca arundinacea
Festuca rubra
Festuca
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The authors performed a preliminary survey of Festuca rubra L. s.l. in the outer dunes of the West- Frisian island of Terschelling. Starting-point was the question which dune-form of this grass — Festuca juncifolia St. Amans or Festuca rubra subvar. arenaria (Osb.) Hack. — was growing there. In the transsects I and II (fig. 1) on the northern coast of the island a number of plants of Festuca were investigated. Six characteristics were analysed; the most important was the manner in which fibres (sclerenchyma) in the leaf-blades occur (fig. 2). It appears that especially Festuca rubra subvar. arenaria is common in the outer dunes of Terschelling. A continuous layer of fibres — characteristic of juncifolia — was not found in the plants studied. This result is remarkable, because juncifolia too should be rather common in the Dutch islands according to the literature.
Festuca rubra
Festuca
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Village Garda de Sus is located in Aries basin and includes grasslands its perimeter with semi-important areas that are particularly important because they have many functions. Maintain these pastures in the cultural landscape is a topical issue nationally and beyond. Although a phytodiversity high yield and quality obtained are not satisfactory. Improving these parameters can be done through interventions in the system, such as fertilization, which can increase productivity and maintaining a high phytodiversity, and improve crop quality.
Our research objective is to monitor the effect of mineral fertilizers on productivity and meadows of Festuca rubra phytodiversity after a period of three years.
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Festuca
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Abstract Endomycorrhizas and Endogone spores are ubiquitous in Otago tussock grassland. Typical Endogone endophytes predominate. but Rhizophagus tenuis is common in high-altitude grasses, and predominates in transplants brought to low altitude. Glasshouse and field experiments indicate that only at higher altitudes in Otago tussock grasslands is the phosphorus available in soil in the range (<8 ppm Truog test) where grasses are likely to be mycotrophic. Of the five tussock grasses investigated (Festuca novae-zelandiae, Poa laevis, P. colensoi, Chionochloa rigida. C. macra). only two—Chionochloa rigida and Poa colensoi—seem likely to benefit from endomycorrhizal infection in their natural soils.
Tussock
Festuca
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The 4 species of Festuca L.of Gramineae,Festuca Sinensis Keng,Festuca,Festuca sp and Festuca rubra,was studied in this paper.It was showed that Festuca Sinensis Keng yield and seed production than the other three varieties of high.and because of the stem upright,mature,neat,plump grain,suitable for mechanical operation,is the most suitable one of the fine grass species that was building of our province alpine grasslands in pastoral areas,grassland and ecological management of the project.
Festuca
Festuca rubra
Festuca arundinacea
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