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The role of perennial ryegrass endophyte in Italian ryegrass
NZGA: Research and Practice Series, 2006Italian ryegrass (Lolium multiflorum) and short-term hybrid ryegrass (L. boucheanum) have reliable establishment and high cool season growth, but varying persistence after the first summer. In Northland, there is increased stress on ryegrass from invertebrate insect attack.
Bruce Cooper +4 more
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Ryegrass Staggers: The Presence of Lolitrem Neurotoxins in Perennial Ryegrass Seed
New Zealand Veterinary Journal, 1982Abstract Extract Sir:- Recently, two potent neurotoxins named lolitrem A and lolitrem B were isolated from herbage collected from pastures on which the livestock disorder ryegrass staggers (RGS) occurred. et al.(1) We now wish to report that samples of perennial rygrass (Loliun yeretzrze L.) seed obtained from several locations in New Zealand contained
R T, Gallagher +6 more
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Italian ryegrass as a perennial fodder crop
Proceedings of the Annual Congresses of the Grassland Society of Southern Africa, 1976Italian ryegrass (Lolium multiflorum Lam.) may be re-established from seedfall if the appropriate management practices are applied, and may thus function as a perennial fodder crop. Annual seedbed preparation and seeding are eliminated in this way.Keywords: botany; fodder; grasses; italian ryegrass; lolium multiflorum; management; ryegrass; seeding ...
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The Endophytic Fungus of Perennial Ryegrass
New Zealand Journal of Agricultural Research, 1959Summary In 1958 a survey was made of the incidence of the endophyte transmitted in certified perennial ryegrass seed ( Lolium perenne ) grown in New Zealand. Most lines of seed with high endophyte infection were strains harvested from long‐established pastures.
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The Growth of Perennial Ryegrass: A Model
Annals of Botany, 1979The annual pattern of production of the perennial ryegrass crop is largely affected by the seasonal weather pattern and the change from the vegetative to the reproductive phase of growth. Analysis of the relative importance of the factors governing the growth of the reproductive crop and the regrowth of the vegetative crop is complex.
J. E. SHEEHY, J. M. COBBY, G. J. A. RYLE
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SEED FORMATION IN PERENNIAL RYEGRASS
Grass and Forage Science, 1964During the interval from seed set to advanced shedding in a crop of S24 perennial rye‐grass, a study was made of: seed drying, the increase in germinating capacity and weight of seed, and the shedding of florets. The seed in early‐emerged heads dried more rapidly than that in later heads, and the seed in the upper parts of each spike was drier than in ...
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Perennial Ryegrass (Lolium perenne L.)
2006A protocol that facilitates rapid establishment of Agrobacterium-mediated transformation for perennial ryegrass is described. The synthetic green fluorescent protein (sgfpS65T) reporter gene is introduced in combination with the nptII selectable marker gene into axillary bud derived embryogenic calli of perennial ryegrass (Lolium perenne L.) by co ...
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Breeding perennial ryegrass for agriculture
Euphytica, 1991Perennial ryegrass has become the most widely sown perennial forage grass in temperate regions due to its combination of high digestibility and tolerance of grazing. The primary objectives in breeding for agricultural use are to improve total and seasonal dry matter production over a range of fertiliser inputs, digestibility, persistency, freezing ...
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Effect of ryegrass mosaic virus on the quality of perennial ryegrass
Annals of Applied Biology, 1979SUMMARYIn 1976 fields of perennial ryegrass located on two farms in the west of Scotland were found to be far more severely and extensively infected by ryegrass mosaic virus (RMV) than had been seen in earlier surveys of ryegrass fields in 1972 and 1973.The chemical analysis of samples of ryegrass from 10 of the fields examined in 1976 showed that RMV ...
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