Agrostis

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Agrostis

 

a genus of perennial and, less commonly, annual grasses of the family Gramineae. The small, one-flowered spike-lets are gathered in loose panicles. There are approximately 200 species, distributed in the temperate and cold belts, mainly in the northern hemisphere in the mountains of tropical regions. The USSR has more than 30 species, growing mainly in the forest zone. The plants grow in meadows (often in large clusters), in glades, amid thickets, and along bodies of water.

The genus includes many forage grasses. The species A. stolonifera (formerly A. alba) and A. gigantea, which are found along wet meadows, are used for pasture and silage. Both species are grown in grass mixtures for lowland meadows. Other forage grasses include the dog bent (A. canina), which grows in the European USSR; the Siberian species A. clavata and A. trinii; and the Caucasian species A. planifolia. The Rhode Island bent (A. tenius; formerly A. capillaris) is often found in dry meadows but is rarely eaten by livestock. A number of species, including the dog bent and the Rhode Island bent, are grown for lawns. A. alpina, the cloud bent (A. nebulosa), and A. rupestris are ornamentals.

REFERENCES

Kormovye rasteniia senokosov i pastbishch SSSR, vol. 1. Edited by I. V. Larin. Moscow-Leningrad, 1950.

T. V. EGOROVA

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Fine fescue, perennial ryegrass, bentgrasses, annual bluegrass, and Kentucky bluegrass are suscepts.
All cool season species can serve as hosts, with injury usually most severe on the bentgrasses.
3]-N leaching were greater under annual bluegrasses than under bentgrasses (Table 2).
Total root biomass of the bentgrasses was also larger than the annual bluegrasses and developed deeper in the root zone (Table 3).
Velvet bentgrasses maintained acceptable TQ levels at 60% ETa.
Velvet bentgrass generally had higher IR/R throughout the experimental period regardless of irrigation regime compared with colonial and creeping bentgrasses.
Because of the clear distinction between the creeping and velvet bentgrass cultivar clusters, it is most likely that these putative velvet bentgrasses were actually fine-textured creeping bentgrasses.
One cluster was closely associated with the known velvet bentgrasses, while the other cluster formed a bridge between the known colonial bentgrasses and the known creeping bentgrasses.
David Kopec at the University of Arizona are recognized for the collection of creeping bentgrasses from Illinois and Arizona, respectively.
Our objective was to use AFLPs to investigate genetic variability among old and new cultivars of creeping bentgrasses, redtop bentgrasses, and plant introductions, and to differentiate MSU experimental lines of creeping bentgrasses.
Yamamoto and Duich (1994) could not distinguish Highland and Exeter from the other 10 colonial bentgrasses using phosphogluco-isomerase, glutamate oxalotransaminase, peroxidase, and topoisomerase isozymes.
colonial bentgrasses, and potentially for identifying their natural hybrids.