scholarly journals Combining Drought Survival via Summer Dormancy and Annual Biomass Productivity in Dactylis glomerata L.

2016 ◽  
Vol 7 ◽  
Author(s):  
Rajae Kallida ◽  
Latifa Zhouri ◽  
Florence Volaire ◽  
Adrien Guerin ◽  
Bernadette Julier ◽  
...  
Keyword(s):  
Dactylis Glomerata ◽  
Biomass Productivity ◽  
Summer Dormancy ◽  
Annual Biomass ◽  
Drought Survival ◽  
Dactylis Glomerata L

scholarly journals Evaluation of cocksfoot (Dactylis glomerata L.) population for drought survival and behavior

2019 ◽  
Vol 26 (1) ◽  
pp. 49-56 ◽  
Author(s):  
Latifa Zhouri ◽  
Rajae Kallida ◽  
Naima Shaimi ◽  
Philippe Barre ◽  
Florence Volaire ◽  
...  
Keyword(s):  
Dactylis Glomerata ◽  
Drought Survival ◽  
Dactylis Glomerata L ◽  
And Behavior

Evaluation of populations of Dactylis glomerata L. native to Mediterranean environments

2012 ◽  
Vol 63 (12) ◽  
pp. 1124 ◽  
Author(s):  
V. Copani ◽  
G. Testa ◽  
A. Lombardo ◽  
S. L. Cosentino
Keyword(s):  
Genetic Diversity ◽  
Biomass Yield ◽  
Agronomic Traits ◽  
Dactylis Glomerata ◽  
Leaf Length ◽  
Mediterranean Environment ◽  
Summer Dormancy ◽  
Low Levels ◽  
Dactylis Glomerata L ◽  
Different Levels

Several morphological and agronomic traits and the genetic diversity of nine Dactylis glomerata L. populations collected throughout Sicily (semi-arid Mediterranean environment) were evaluated for two successive years. Significant differences were recorded for morphological traits (plant height, leaf length, leaf width). In relation to the measurement of summer dormancy, the results suggest the expression of different levels of dormancy (completely dormant, semi-dormant, and non-dormant). For biomass yield, some Sicilian populations (SD63 and SD56) characterised by low levels of summer dormancy show production levels similar to the summer-active control varieties (Medly and Porto). However, SD46, with a much higher level of dormancy, gave biomass yield higher than the summer-dormant control variety (Kasbah). The genetic diversity evaluated by fAFLP analysis confirms the observed morphological and agronomic variability.

scholarly journals Selectivity of some herbicides to cocksfoot (Dactylis glomerata L.), grown for seed production

2012 ◽  
Vol 27 (1) ◽  
pp. 69-75
Author(s):  
Tsvetanka Dimitrova ◽  
Aneliya Katova
Keyword(s):  
Seed Production ◽  
High Selectivity ◽  
Dactylis Glomerata ◽  
Biomass Productivity ◽  
Forage Crops ◽  
Leached Chernozem ◽  
Dry Biomass ◽  
Phytotoxic Effect ◽  
Dactylis Glomerata L ◽  
Tribenuron Methyl

The study was conducted to determine selectivity of some herbicides to cocksfoot (Dactylis glomerata L.), and their influence on the seed production, during the years 2008- 2010. The trial was set on the experimental field of the Institute of Forage Crops - Pleven, on slightly leached chernozem. As a result of the research the following was found: herbicides Arat (500 g/l dicamba + 250 g/l tritosulfuron) at the dose of 100 ml/ha, Korida 75 VDG (750 g/kg tribenuron-methyl) - 15 g/ha and Cambio SL (320 g/l bentazon + 90 g/l dicamba) - 1250 ml/ha and Grasp 25SK (250 g/l tralkoxyidim) + Atplus at rate of 1000 + 1000 ml/ha had high selectivity to cocksfoot, applied at 2-4 leaf stage during establishing year of the stand, and until the stage of the beginning of shooting up in seed production year. Herbicide Topik 080EK (80 g/l clodinofop - propargyl + antidote) at rate of 300 ml/ha, showed phytotoxic effect to D. glomerata and caused the reduction of seed and dry biomass productivity.

Characterization of cocksfoot (Dactylis glomerata L.) population for growth traits and summer dormancy

2017 ◽  
Vol 8 (12) ◽  
pp. 4378-4384
Author(s):  
L. Zhouri ◽  
R. Kallida ◽  
N. Shaimi ◽  
P. Barre ◽  
F. Volaire ◽  
...  
Keyword(s):  
Growth Traits ◽  
Dactylis Glomerata ◽  
Summer Dormancy ◽  
Dactylis Glomerata L

Summer dormancy in Dactylis glomerata L.: the influence of season of sowing and a simulated mid-summer storm on two contrasting cultivars

2006 ◽  
Vol 57 (5) ◽  
pp. 565 ◽  
Author(s):  
M. R. Norton ◽  
F. Lelièvre ◽  
F. Volaire
Keyword(s):  
Soil Water ◽  
Dactylis Glomerata ◽  
Summer Drought ◽  
Basal Cover ◽  
Moisture Regimes ◽  
Summer Dormancy ◽  
Summer Storm ◽  
Dactylis Glomerata L ◽  
Reduced Activity ◽  
Spring Sowing

A series of trials to increase understanding of the summer dormancy trait in Dactylis glomerata was conducted. Autumn-sown reproductive and younger, spring-sown plants of 2 drought-resistant cultivars, contrasting for summer dormancy, were established and then tested in summer 2002 under long drought, drought + mid-summer storm, or full irrigation. The autumn-sown reproductive plants of cv. Kasbah were summer dormant under all moisture regimes and exhibited the characteristic traits including growth cessation, rapid herbage senescence, and dehydration of surviving organs (–6.7 MPa). Cultivar Kasbah used 8% less soil water over the summer and also began to rehydrate its leaf bases from conserved soil water before the drought broke. The non-dormant cv. Medly grew for 10 days longer under drought and whenever moisture was applied; Medly also responded to the storm with a decline in dehydrin expression in leaf bases, whereas no decline occurred in Kasbah, presumably because it remained dormant and therefore much drier. The irrigated, younger, spring-sown swards of cv. Kasbah had restrained growth and produced only about 25% of the herbage of cv. Medly. Drought reduced activity and growth of young plants of both cultivars, but whereas Medly regrew in response to the storm, cv. Kasbah did not, indicating that dormancy, although only partially expressed after spring sowing, was reinforced by summer drought. A longer drought in 2003 caused a 22% loss of the basal cover in cv. Medly, whereas Kasbah fully maintained its sward and therefore produced a higher post-drought autumn yield. This work confirms summer dormancy as a powerful trait for improving persistence over long, dry summers.

Growth traits associated with drought survival, recovery and persistence of cocksfoot (Dactylis glomerata) under prolonged drought treatments

2019 ◽  
Vol 70 (1) ◽  
pp. 85 ◽  
Author(s):  
M. Abdollahi Bakhtiari ◽  
F. Saeidnia ◽  
M. M. Majidi ◽  
A. Mirlohi
Keyword(s):  
Drought Tolerance ◽  
Deficit Irrigation ◽  
Growth Traits ◽  
Dactylis Glomerata ◽  
Forage Production ◽  
Prolonged Drought ◽  
Drought Recovery ◽  
Seed Management ◽  
Drought Survival ◽  
Dactylis Glomerata L

The effect of prolonged drought treatments on persistence, growth traits, drought survival and post-drought recovery was investigated in two sets of differently managed genotypes of cocksfoot (Dactylis glomerata L.). In total, 72 genotypes (two sets of 36 managed for seed and forage harvest, respectively) were evaluated for agro-morphological traits in the field during 2013–15 under normal and deficit irrigation regimes. In the fourth year (2016), irrigation was withheld in both irrigation treatments for 2 months and then plants were re-watered to investigate the effect of prolonged drought regimes on traits related to post-drought recovery. The deficit irrigation regime decreased persistence and recovery. These reductions were lower in the seed-management than the forage set, which indicates that delaying the first harvest of the seed-management treatment to maximise seed production led to lower impact of drought stress. The seed-management treatment also had lower persistence. The forage-management treatment had higher recovery under normal irrigation, whereas under deficit irrigation, the seed-management treatment had higher recovery. Association analysis showed the possibility of selecting genotypes having high values of persistence and drought tolerance. Results also showed a negative correlation between days to flowering and recovery after drought, indicating that selection for earliness may improve survivability and persistence of these plants. Superior genotypes with higher forage production and better recovery, persistence and drought tolerance may be recommended for development of synthetic cultivars.

Measuring dehydration tolerance in pasture grasses to improve drought survival

2014 ◽  
Vol 65 (8) ◽  
pp. 828 ◽  
Author(s):  
M. R. Norton ◽  
the late F. Lelièvre ◽  
F. Volaire
Keyword(s):  
Perennial Grasses ◽  
Cool Season ◽  
Breeding Programs ◽  
Dehydration Tolerance ◽  
Pasture Grasses ◽  
Summer Dormancy ◽  
Specific Variation ◽  
Drought Survival ◽  
Dactylis Glomerata L ◽  
Dehydration Avoidance

Cool-season grasses, both annual and perennial, typically employ the strategies of dehydration avoidance and dehydration tolerance to help them to survive extended periods of low soil moisture. Summer dormancy is an extra trait employed by perennial grasses particularly adapted to regions experiencing extended hot, dry summers. Of the three strategies, it appears that least is known about dehydration tolerance. Using and extending a methodology developed for cocksfoot (Dactylis glomerata L.), this study compared a range of cultivars of cocksfoot, tall fescue and phalaris differing in expression of summer dormancy. Both inter- and intra-specific variation in dehydration tolerance was observed, with cocksfoot expressing the trait strongly, whereas it was least evident in phalaris. The trait was more strongly evident in cultivars originating in drier environments, and the ability to express dehydration tolerance appeared to be independent of summer dormancy. It has been confirmed that dehydration tolerance is a powerful drought-survival trait, one that warrants increasing attention in plant breeding programs for drying environments.

Influence of N Fertilization and N Carryover on Yield and N Concentration of Dactylis glomerata L. 1

1973 ◽  
Vol 65 (4) ◽  
pp. 671-674 ◽  
Author(s):  
S. J. Donohue ◽  
C. L. Rhykerd ◽  
D. A. Holt ◽  
C. H. Noller
Keyword(s):  
Dactylis Glomerata ◽  
N Fertilization ◽  
N Concentration ◽  
Dactylis Glomerata L
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