CHEMICAL COMPOSITION OF WILD SAMPLES OFTIMOTHY-GRASS (PHLEUM PRATENSE L.)

2020 ◽  
Author(s):  
Valentina Korovina ◽  
Nikolay Kozlov ◽  
Tamara Komkova
Keyword(s):  
Chemical Composition ◽  
Statistical Processing ◽  
Phleum Pratense ◽  
Research Center ◽  
Timothy Grass ◽  
Low Level ◽  
Experimental Base ◽  
Standard Collection ◽  
Phosphorus And Potassium ◽  
Phleum Pratense L

The research was carried out in the field at the Central experimental base of the Federal Williams Research Center. The object of research was 13 samples of timothy-grass. Samples were sown according to the scheme of a standard collection nursery. All studies and observations were carried out on the herbage of the 2nd and 3rd year of life. Statistical processing of the research results indicates a low level of variation. The sample № 414 stood out high content of raw protein and raw fat. Two significant correlations were found (between the content of phosphorus and potassium, as well as between crude fiber and crude ash). Analysis of remoteness and kinship between samples showed the presence of 5 clusters (genetically different quality groups), which can be used for breeding for combinational ability and fixing of breeding-valuable features and properties.

scholarly journals MORPHO-PHYSIOLOGICAL FEATURES OF WILD-GROWING SAMPLES OF MEADOW TIMOTHY GRASS (Phleum pratense L.)

2020 ◽  
Vol 2020 (4) ◽  
pp. 39-45
Author(s):  
Valentina Korovina ◽  
Nikolay Kozlov ◽  
Tamara Komkova
Keyword(s):  
Statistical Processing ◽  
Dry Mass ◽  
Phleum Pratense ◽  
Significance Level ◽  
Timothy Grass ◽  
Experimental Base ◽  
Standard Collection ◽  
Grass Stand ◽  
Optimal Productivity ◽  
Phleum Pratense L

The research was carried out in the field at the Central experimental base of the Federal Williams Re¬search Center. The object of research was 12 samples of wild-growing meadow timothy grass. Samples were sown according to the scheme of a standard collection nursery. All studies and observations were carried out on the herbage of the 2nd and 3rd year of life. Statistical processing of results of researches of meadow timothy indicates a low level of variation in the main morphological and physiological characte¬ristics. Only by the number of vegetative shoots have the coefficient of variation reach 35.8%. Samples 416 and 419 were distinguished by precocity, samples 406 and 419 by the height of plants during flower¬ing, sample 412 by the number of generative shoots, and sample 412 by the yield of air-dry mass. Sam¬ples 409 and 414 were distinguished by the length of the sultan, and the weight of seeds — 414 and 415. Nine reliable correlations were found at the significance level 05 and 01. However, all of them are related to the yield of the number of generative and vegetative shoots. Using the binomial equation, the experi¬mentally obtained variability of dry mass yield from the number of generative and vegetative shoots by 93.1% is described. The optimal productivity of meadow timothy grass stand for generative shoots in the area of 550–600 shoots, and vegetative ones — in the area of 320–350 shoots per square meter. Analysis of remoteness and kinship between samples showed the presence of 2 clusters (genetically different quality groups), which can be used for combinational ability selection and fixing of selection-valuable features and properties.

scholarly journals EVALUATION OF TRAIT VARIABILITY IN VARIOUS COLLECTION SAMPLES OF ALFALFA

2021 ◽  
Vol 2021 (1) ◽  
pp. 15-23
Author(s):  
Mikhail Makarenkov ◽  
Nikolay Kozlov ◽  
Tamara Komkova
Keyword(s):  
Crude Protein ◽  
Statistical Processing ◽  
Forage Production ◽  
Medicago Lupulina ◽  
Experimental Base ◽  
Standard Collection ◽  
Medicago Sativa L ◽  
High Level ◽  
Maximum Content ◽  
Selection Of

The research was carried out in the field at the Central Experimental Base of the Federal Williams Research Center of Forage Production and Agroecology. The object of research was 41 samples of alfalfa. The samples were sown according to the scheme of a standard collection nursery. All studies and observations were carried out on the herbage of the second and third years of life. Statistical processing of the research results showed a generally high level of variation in the characteristics. We identified the 4 best samples for a set of features. Several significant positive and negative correlations have been identified, which can be used as indirect signs in the evaluation and selection of promising forms. This method allowed us to identify 3 genetically different groups (clusters) of samples that differ in the nature of the formation of traits. The first cluster includes samples 49, 54, 66, ... and 193 belonging to various studied species. But mostly they represent the species Medicago sativa L. The samples differ little in the content of crude fiber and crude protein. The second cluster includes samples 454, 605, 583, ... and 598, which had average values for most indicators. The third group of samples includes 192, 646 and 355 (Medicago lupulina L. and Medicago glutinosa M.B.) with a maximum content of crude protein. The analysis of the distance and kinship between the samples revealed the presence of three clusters that can be used in breeding for combinational ability and consolidation of breeding-valuable traits.

scholarly journals Comparison of the Yield and Chemical Composition of Eleven Timothy (Phleum pratense L.) Genotypes under Three Locations in Poland

Agronomy ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 1743
Author(s):  
Adam Radkowski ◽  
Jan Bocianowski ◽  
Kamila Nowosad ◽  
Elżbieta Piwowarczyk ◽  
Ewa Bakinowska ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Plant Breeding ◽  
Crude Protein ◽  
Dry Matter ◽  
Field Trials ◽  
Phleum Pratense ◽  
Habitat Conditions ◽  
High Dry Matter ◽  
Harvest Year ◽  
Phleum Pratense L

Field trials were conducted in the years 2017–2019 at the Małopolska Plant Breeding in the Plant Breeding Stations in Polanowice, Nieznanice and Palikije. The trials were designed to determine the yield of some timothy genotypes in the context of chemical composition under different habitat conditions. The present evaluation of the strain quality shows a high potential for breeding. The analyzed genotypes produced high dry matter yields, which differed by as much as 53%. The experimental plots also differed in the crude protein content, which varied from 104.5 to 230.1 g kg−1 d.m., depending on the crop and year of harvest. For crude fiber, these values ranged from 173.9 to 274.8 g kg−1 d.m., depending on the crop and harvest year. The analysis of the mineral composition also revealed significant large variation.

5S rDNA of timothy- grass Phleum pratense L.

2018 ◽  
Vol 10 (2) ◽  
pp. 107-112
Author(s):  
O Ishchenko ◽  
◽  
T Derevenko ◽  
I Panchuk ◽  
◽  
...  
Keyword(s):  
5S Rdna ◽  
Phleum Pratense ◽  
Timothy Grass ◽  
Phleum Pratense L

THE COMPOSITION AND UTILIZATION OF SILAGE PREPARED FROM TIMOTHY (Phleum pratense L.) AND QUACKGRASS (Elytrigia repens (L.) NEOSKI)

1989 ◽  
Vol 69 (1) ◽  
pp. 255-258 ◽  
Author(s):  
P. NARASIMALU ◽  
H. T. KUNELIUS ◽  
K. B. McRAE
Keyword(s):  
Chemical Composition ◽  
Key Words ◽  
Nitrogen Retention ◽  
Phleum Pratense ◽  
Apparent Digestibility ◽  
Elytrigia Repens ◽  
Voluntary Intake ◽  
Phleum Pratense L

Silages prepared from the first-cut and 7-8 wk regrowth of timothy (Phleum pratense L.) and timothy stands with 56% infestation of quackgrass (Elytrigia repens (L.) Neoski) were compared for chemical composition and for their utilization. Quackgrass infestation of timothy had no significant effect on the silage composition, and its intake and apparent digestibility in sheep. The daily retention of N was higher with the timothy-quackgrass than timothy silage (P < 0.05).Key words: Phleum pratense, Elytrigia repens, voluntary intake, apparent digestibility, nitrogen retention

Metabolite accumulation during ice encasement of timothy grass (Phleum pratense L.)

1994 ◽  
Vol 102 ◽  
pp. 373-380 ◽  
Author(s):  
Bjarni E. Gudleifsson
Keyword(s):  
Pseudomonas Fluorescens ◽  
Phleum Pratense ◽  
Anoxic Conditions ◽  
Timothy Grass ◽  
Subzero Temperatures ◽  
Long Duration ◽  
Ice Encasement ◽  
Metabolite Accumulation ◽  
Phleum Pratense L ◽  
Thaw Water

SynopsisPlants are killed by prolonged ice encasement at slightly subzero temperatures and under these anoxic conditions a number of metabolites are accumulated. Timothy grass plants encased in ice at −2°C can survive these conditions for many weeks and accumulate mainly CO2 and ethanol and lower levels of malate, oxalate, citrate, fumarate and pyruvate. While the accumulation of most of the metabolites increases towards the end of the encasement period the amount of malate decreases, indicating utilisation. Late in the encasement period lactate, butyrate, and traces of malonate, formate and tartarate were detected which might be of bacterial origin. The bacteria most commonly isolated from ice-encased plants is Pseudomonas fluorescens (Trevisan) which in most cases is saprophytic. All of the above-mentioned metabolites were also detected from thaw water in the field after long duration of ice encasement, butyrate attaining the highest concentration.

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