scholarly journals Wpływ nawożenia azotowego na niektóre właściwości fizjologiczne i morfologiczno-anatomiczne Lolium multiflorum Lam. (formy tetraploidalnej) [Effect of nitrogen nutrition on some physiological, morphological, and anatomical properties of tetraploidal form of Lolium multiflorum Lam.]

2015 ◽  
Vol 28 (1) ◽  
pp. 95-119
Author(s):  
B. Gej ◽  
H. Baranowska ◽  
J. Mazurowa ◽  
B. Rogozińska
Keyword(s):  
Nitrogen Content ◽  
Nitrate Nitrogen ◽  
Nitrogen Nutrition ◽  
Lolium Multiflorum ◽  
Italian Ryegrass ◽  
Vascular Bundles ◽  
One Pot ◽  
Anatomical Properties ◽  
Area Unit ◽  
High Doses

In pot experiments the high doses of nitrogen (3.50 g of NH<sub>4</sub>NO<sub>4</sub> per one pot with 9.5 kg of sand) cause the increase of tillering intensity, leaf assimilatory area, water as well as chlorophyll (a+b) content, total and nitrate nitrogen content, and biomass increment of Italian ryegrass (tetraploid) plants. However, these doses do not effect: the nucleic acids content, number of stomata (per surface area unit of leaf blades), number of vascular bundles in leaves, and the intensity of <sup>14</sup>CO<sub>2</sub> uptake by these leaves.

Quantitative trait loci analysis of nitrate-nitrogen content in Italian ryegrass (Lolium multiflorum Lam.)

Euphytica ◽  
2021 ◽  
Vol 217 (1) ◽  
Author(s):  
Wenqing Tan ◽  
Di Zhang ◽  
Nana Yuyama ◽  
Jun Chen ◽  
Shinichi Sugita ◽  
...  
Keyword(s):  
Quantitative Trait Loci ◽  
Nitrogen Content ◽  
Quantitative Trait ◽  
Nitrate Nitrogen ◽  
Lolium Multiflorum ◽  
Italian Ryegrass ◽  
Trait Loci

15n Moved to the Grain of Winter Wheat When Applied as Nitrate to Senescing Flag Leaves.

1982 ◽  
Vol 9 (6) ◽  
pp. 641 ◽  
Author(s):  
WM Blacklow
Keyword(s):  
Winter Wheat ◽  
Nitrogen Content ◽  
Nitrate Nitrogen ◽  
Nitrogen Nutrition ◽  
Emission Spectrometry ◽  
Flag Leaves ◽  
Grain Nitrogen ◽  
Days After Anthesis

Flag leaves of wheat in the field took up a solution containing 30 mM K15NO3 through their cut tips. Treatment was applied 37 days after anthesis and uptake was allowed to continue for intervals up to 76 h by which time about 0.6 mg of 15N nitrate nitrogen was taken up. At the time of treatment, the flag leaves from plants grown under two levels of nitrogen nutrition had lost half of their nitrogen content and were exporting it at about 0.2 mg per day. Despite this state of senescence the flag leaves were able to reduce the nitrate and 30-40% of that taken up was translocated to the grain within 3 days. No nitrate accumulated in the leaves or grain. Emission spectrometry was sufficiently sensitive to detect 15N which increased from 0.02 to 1.18% of grain nitrogen during the 76 h of accumulation.

Inhibitory effects of Italian ryegrass (Lolium multiflorum Lam.) seedlings of rice (Oryza sativa L.)

2018 ◽  
Vol 44 (2) ◽  
pp. 219-232 ◽  
Author(s):  
S.J Jang ◽  
K.R. Kim ◽  
Y.B. Yun ◽  
S.S. Kim ◽  
Y.I Kuk
Keyword(s):  
Oryza Sativa ◽  
Oryza Sativa L ◽  
Lolium Multiflorum ◽  
Italian Ryegrass ◽  
Inhibitory Effects

Protection of Italian ryegrass (Lolium multiflorum L.) seedlings from salinity stress following seed priming with L-methionine and casein hydrolysate

2020 ◽  
pp. 1-9
Author(s):  
Keum-Ah Lee ◽  
Youngnam Kim ◽  
Hossein Alizadeh ◽  
David W.M. Leung
Keyword(s):  
Oxidative Stress ◽  
Amino Acids ◽  
Salinity Stress ◽  
Lolium Multiflorum ◽  
Casein Hydrolysate ◽  
Seed Priming ◽  
Germination Percentage ◽  
Italian Ryegrass ◽  
Significant Difference ◽  
Protein Amino Acids

Abstract Seed priming with water (hydropriming or HP) has been shown to be beneficial for seed germination and plant growth. However, there is little information on the effects of seed priming with amino acids and casein hydrolysate (CH) compared with HP, particularly in relation to early post-germinative seedling growth under salinity stress. In this study, Italian ryegrass seeds (Lolium multiflorum L.) were primed with 1 mM of each of the 20 protein amino acids and CH (200 mg l−1) before they were germinated in 0, 60 and 90 mM NaCl in Petri dishes for 4 d in darkness. Germination percentage (GP), radicle length (RL) and peroxidase (POD) activity in the root of 4-d-old Italian ryegrass seedlings were investigated. Generally, when the seeds were germinated in 0, 60 and 90 mM NaCl, there was no significant difference in GP of seeds among various priming treatments, except that a higher GP was observed in seeds of HP treatment compared with the non-primed seeds when incubated in 60 mM NaCl. When incubated in 60 and 90 mM NaCl, seedlings from seeds primed with L-methionine or CH exhibited greater RL (greater protection against salinity stress) and higher root POD activity than those from non-primed and hydro-primed seeds. Under salinity stress, there were higher levels of malondialdehyde (MDA) in the root of 4-d-old Italian ryegrass seedlings, a marker of oxidative stress, but seed priming with CH was effective in reducing the salinity-triggered increase in MDA content. These results suggest that priming with L-methionine or CH would be better than HP for the protection of seedling root growth under salinity stress and might be associated with enhanced antioxidative defence against salinity-induced oxidative stress.

scholarly journals Characterization of the hydroxyproline-rich protein core of an arabinogalactan-protein secreted from suspension-cultured Lolium multiflorum (Italian ryegrass) endosperm cells

1989 ◽  
Vol 264 (3) ◽  
pp. 857-862 ◽  
Author(s):  
P A Gleeson ◽  
M McNamara ◽  
R E H Wettenhall ◽  
B A Stone ◽  
G B Fincher
Keyword(s):  
Polyclonal Antibodies ◽  
Lolium Multiflorum ◽  
Italian Ryegrass ◽  
Arabinogalactan Protein ◽  
Myeloma Protein ◽  
Protein Core ◽  
Liquid Suspension ◽  
Peptide Component ◽  
Immunodominant Epitopes

An arabinogalactan-protein (AGP) purified from the filtrate of liquid-suspension-cultured Italian-ryegrass (Lolium multiflorum) endosperm cells by affinity chromatography on myeloma protein J539-Sepharose was deglycosylated with trifluoromethanesulphonic acid to remove polysaccharide chains that are covalently associated with hydroxyproline residues in the peptide component of the proteoglycan. The protein core, which accounts for less than 10% (w/w) of the intact proteoglycan, was purified by h.p.l.c. It has an apparent Mr of 35,000, but reacts very poorly with both Coomassie Brilliant Blue R and silver stains. Amino-acid-sequence analysis of the N-terminus of the h.p.l.c.-purified protein core and of tryptic peptides generated from the unpurified protein reveals a high content of hydroxyproline and alanine. These are sometimes arranged in short (Ala-Hyp) repeat sequences of up to six residues. Polyclonal antibodies raised against the protein core do not cross-react with native AGP, the synthetic peptide (Ala-Hyp)4, poly-L-hydroxyproline or poly-L-proline. The results suggest that the polysaccharide chains in the native AGP render the protein core of the proteoglycan inaccessible to the antibodies and that the immunodominant epitopes include domains of the protein other than those rich in Ala-Hyp repeating units.

Seed germination behavior of glyphosate‐resistant and susceptible Italian ryegrass ( Lolium multiflorum Lam.)

2020 ◽  
Author(s):  
Afonso Henrique Schaeffer ◽  
Diógenes Cecchin Silveira ◽  
Otávio Augusto Schaeffer ◽  
Nadia Canali Lângaro ◽  
Leandro Vargas
Keyword(s):  
Seed Germination ◽  
Lolium Multiflorum ◽  
Italian Ryegrass
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