scholarly journals Assessment of Relationship between Seed Yield and its Components in Half Sib Populations of Orchard Grass (Dactylis Glomerata) under Normal and Drought Conditions

2016 ◽  
Vol 8 (18) ◽  
pp. 47-56 ◽  
Author(s):  
Behnam Hosseini ◽  
Mohammad Mahdi Majidi ◽  
Aghafakhr Mirlohi
Keyword(s):  
Seed Yield ◽  
Dactylis Glomerata ◽  
Orchard Grass ◽  
Drought Conditions

Seed yield of three Bromus species native to western Canada

1999 ◽  
Vol 79 (4) ◽  
pp. 551-555 ◽  
Author(s):  
K. W. May ◽  
W. D. Willms ◽  
D. G. Stout ◽  
B. Coulman ◽  
N. A. Fairey ◽  
...  
Keyword(s):  
Seed Yield ◽  
Native Species ◽  
Dactylis Glomerata ◽  
Grass Species ◽  
Western Canada ◽  
Orchard Grass ◽  
Bromus Carinatus ◽  
Meadow Bromegrass ◽  
Harvest Year ◽  
Seed Yields

There is an increasing demand to use native grass species for revegetating disturbed sites such as logged clearcuts. The value of such species is closely linked with their ability to produce seed. We compared seed yield of three native Bromus species (Bromus carinatus Hook. & Arn., B. ciliatus L., and B. anomalus Rupr. Ex Fourn.) and three domestic forage species (B. riparius Rehm., B. inermis Leyss., and Dactylis glomerata L.) and tested the hypothesis that native species divert fewer resources to reproductive growth than do domestic grasses. Six experiments were conducted at five locations in western Canada to evaluate the potential for seed yield from native brome. Bromus carinatus seeds ripened, on average, the first week of August, similar to B. riparius and D. glomerata, while seed of B. anomalus and B. ciliatus ripened about the third week of August, similar to B. inermis. Seed yields were highly variable among sites and between years. Over all sites, yields among species were not significantly different (P = 0.05). Mean second-year yield was less than half of that of the first harvest year. Yields of 2–3 t ha−1 were found for B. anomalus, B. ciliatus and B. inermis at certain sites. Seed yields were positively correlated to inflorescence number m−2 in both harvest years and to harvest index in the first harvest year. Based on seed yields that were similar to B. inermis in this study, it should be possible to produce sufficient quantities of reasonably priced seed of native Bromus species for the revegetation industry. Key words: Smooth bromegrass, meadow bromegrass, orchard grass, Bromus sp., Dactylis glomerata

DIFFERENTIAL HOSTS AND NEW HOST RECORDS FOR FIVE GRASS VIRUSES

1961 ◽  
Vol 41 (1) ◽  
pp. 211-216 ◽  
Author(s):  
J. T. Slykhuis
Keyword(s):  
Lolium Perenne ◽  
Lolium Multiflorum ◽  
Dactylis Glomerata ◽  
New Host ◽  
Agropyron Smithii ◽  
Lolium Perenne L ◽  
Orchard Grass ◽  
Differential Hosts ◽  
Dactylis Glomerata L ◽  
New Host Records

A number of cereals and other grasses were compared as hosts for different isolates of viruses causing Agropyron mosaic (AMV), wheat streak mosaic (WSMV), barley stripe mosaic (BSMV), ryegrass mosaic (RMV) and orchard grass mosaic (OMV). Lolium multiflorum L. was susceptible to all the viruses. The four varieties of wheat tested were highly susceptible to AMV, WSMV and BSMV, but not to RMV or OMV. Clintland oats was susceptible to WSMV, RMV and OMV but not to AMV or BSMV. Lolium perenne L. and Dactylis glomerata L. were infected by RMV and OMV only, Agropyron repens L. Beauv. by AMV only, and Setaria italica L. Beauv. by BSMV only. Brant and Husky barley were slightly susceptible to AMV, but seven other varieties appeared immune. Unusual host records include the infection of Setaria lutescens (Weigel) Hubb. and one plant of Agropyron smithii Rydb. with WSMV, and the infection of Agropyron intermedium (Host) Beauv. with BSMV. A list of differential hosts is proposed.

scholarly journals Combinations of Small RNA, RNA, and Degradome Sequencing Uncovers the Expression Pattern of microRNA–mRNA Pairs Adapting to Drought Stress in Leaf and Root of Dactylis glomerata L.

2018 ◽  
Vol 19 (10) ◽  
pp. 3114 ◽  
Author(s):  
Yang Ji ◽  
Peilin Chen ◽  
Jing Chen ◽  
Kayla Pennerman ◽  
Xiaoyu Liang ◽  
...  
Keyword(s):  
Drought Stress ◽  
Stress Response ◽  
Antigen Processing ◽  
Dactylis Glomerata ◽  
Illumina Platform ◽  
Significant Differential Expression ◽  
Degradome Sequencing ◽  
Drought Conditions ◽  
Organ Specific ◽  
Dactylis Glomerata L

Drought stress is a global problem, and the lack of water is a key factor that leads to agricultural shortages. MicroRNAs play a crucial role in the plant drought stress response; however, the microRNAs and their targets involved in drought response have not been well elucidated. In the present study, we used Illumina platform (https://www.illumina.com/) and combined data from miRNA, RNA, and degradome sequencing to explore the drought- and organ-specific miRNAs in orchardgrass (Dactylis glomerata L.) leaf and root. We aimed to find potential miRNA–mRNA regulation patterns responding to drought conditions. In total, 519 (486 conserved and 33 novel) miRNAs were identified, of which, 41 miRNAs had significant differential expression among the comparisons (p < 0.05). We also identified 55,366 unigenes by RNA-Seq, where 12,535 unigenes were differently expressed. Finally, our degradome analysis revealed that 5950 transcripts were targeted by 487 miRNAs. A correlation analysis identified that miRNA ata-miR164c-3p and its target heat shock protein family A (HSP70) member 5 gene comp59407_c0 (BIPE3) may be essential in organ-specific plant drought stress response and/or adaptation in orchardgrass. Additionally, Gene ontology (GO) and Kyoto encyclopedia of genes and genomes (KEGG) analyses found that “antigen processing and presentation” was the most enriched downregulated pathway in adaptation to drought conditions. Taken together, we explored the genes and miRNAs that may be involved in drought adaptation of orchardgrass and identified how they may be regulated. These results serve as a valuable genetic resource for future studies focusing on how plants adapted to drought conditions.

CHINOOK ORCHARD GRASS

1977 ◽  
Vol 57 (2) ◽  
pp. 615-616 ◽  
Author(s):  
M. R. HANNA ◽  
S. SMOLIAK ◽  
D. B. WILSON
Keyword(s):  
Dactylis Glomerata ◽  
Full Description ◽  
Research Station ◽  
Orchard Grass ◽  
Dactylis Glomerata L

Chinook is a winterhardy cultivar of orchard grass (Dactylis glomerata L.) developed by the late R. W. Peake at the Agriculture Canada Research Station, Lethbridge, Alberta. It was released in 1959, but a full description of this cultivar was not published.

RESPONSE OF ORCHARD GRASS TO MULTIPLE HARVESTS AND RATES OF NITROGEN IN POST-SEEDING YEARS

1977 ◽  
Vol 57 (3) ◽  
pp. 763-770
Author(s):  
H. T. KUNELIUS ◽  
MICHIO SUZUKI
Keyword(s):  
Dry Matter ◽  
Dactylis Glomerata ◽  
Late Summer ◽  
Total N ◽  
Orchard Grass ◽  
Nitrate N ◽  
Dactylis Glomerata L ◽  
N Rates

Frode orchard grass (Dactylis glomerata L.) was fertilized with 99–495 kg N/ha/yr in three equal applications and harvested three or four times per season over a 3-yr period to determine the productivity, quality of forage and persistence of stands. The application of N resulted in significant (P =.001) linear and quadratic increases in dry matter (DM) yields. Higher DM yields were obtained with the 3-harvest system while the yield distribution within the season was more uniform for the 4-harvest system. Total N concentrations of orchard grass increased linearly with the N rates. Total N yields were dependent on the rates of applied N with the recovery of applied N ranging from 39 to 70% at 99–297 kg N/ha/yr, respectively. The in vitro disappearance of DM was slightly reduced by the high N rates in the 1st and 2nd harvests. The nitrate-N concentrations were highest in the early and late summer ranging from.11 to.29% at 297–495 kg N/ha/yr, respectively. The persistence of orchard grass was better under the 4- than the 3- harvest system.

Sign in / Sign up

Export Citation Format

Share Document