APICA ALFALFA

1983 ◽  
Vol 63 (2) ◽  
pp. 547-549 ◽  
Author(s):  
R. MICHAUD ◽  
C. RICHARD ◽  
C. WILLHMOT ◽  
H. GASSER
Keyword(s):  
Medicago Sativa ◽  
Plant Height ◽  
Food Production ◽  
Winter Survival ◽  
Research Station ◽  
Eastern Canada ◽  
Stem Size ◽  
Fall Dormancy ◽  
Medicago Sativa L

Apica is a new cultivar of alfalfa (Medicago sativa L.) developed at the Agriculture Canada Research Station in Sainte-Foy. License no. 2200 was issued for Apica by the Food Production and Inspection Branch of Agriculture Canada on 26 Feb. 1982. It is similar to Saranac in leaf and stem size, plant height, maturity, regrowth and fall dormancy. It was extensively tested across Eastern Canada and was found to be superior to Saranac, Iroquois, and Thor for yield, persistence and winter survival.Key words: Alfalfa, cultivar, persistence, Medicago sativa, winter survival

Combining Ability of Coumestrol Content and its Association with Uterotropic Activity, Yield, and Plant Height in Medicago sativa L. 1

Crop Science ◽  
1971 ◽  
Vol 11 (6) ◽  
pp. 836-838 ◽  
Author(s):  
D. D. Stuthman ◽  
I. S. Chorush ◽  
W. E. Nyquist ◽  
R. L. Davis ◽  
Martin Stob
Keyword(s):  
Medicago Sativa ◽  
Plant Height ◽  
Combining Ability ◽  
Activity Yield ◽  
Medicago Sativa L

scholarly journals Quantitative trait locus mapping of yield and plant height in autotetraploid alfalfa (Medicago sativa L.)

2020 ◽  
Vol 8 (5) ◽  
pp. 812-818 ◽  
Author(s):  
Fei He ◽  
Ruicai Long ◽  
Tiejun Zhang ◽  
Fan Zhang ◽  
Zhen Wang ◽  
...  
Keyword(s):  
Quantitative Trait Locus ◽  
Medicago Sativa ◽  
Plant Height ◽  
Quantitative Trait Locus Mapping ◽  
Quantitative Trait ◽  
Medicago Sativa L ◽  
Trait Locus ◽  
Locus Mapping

Phosphorus seed coatings for pasture species. II. Comparison of effectiveness of phosphorus applied as seed coatings, drilled or broadcast, in promoting early growth of phalaris (Phalaris aquatica L.) and lucerne (Medicago sativa L.)

1988 ◽  
Vol 39 (3) ◽  
pp. 447 ◽  
Author(s):  
JM Scott ◽  
GJ Blair
Keyword(s):  
Medicago Sativa ◽  
Plant Height ◽  
Early Growth ◽  
The Other ◽  
Fertilizer Treatment ◽  
Seed Coating ◽  
Phalaris Aquatica ◽  
Medicago Sativa L ◽  
Application Methods ◽  
P Sources

The relative efficiency of phosphorus (P) seed coatings and drilled and broadcast applications of P was investigated in a glasshouse experiment conducted with phalaris (Phalaris aquatica L.) and lucerne (Medicago sativa L.) in P-deficient soil. Two P sources (monocalcium phosphate [MCP] and dicalcium phosphate [DCP]) were used at three rates in seed coatings (0, 5 and 10 kg P ha-1) or at six rates each of drilled or broadcast applications (0, 2.5, 5, 10, 20 and 40 kg P ha-1). MCP coatings severely reduced lucerne emergence and hence yield, but had little effect on phalaris emergence. No other fertilizer treatment affected emergence. The height of phalaris plants at 27 days after sowing (d.a.s.) was increased as much by seed coatings containing MCP at 5 kg P ha-1 as by drill or broadcast applications of MCP at 20 kg P ha-1. Plant height of the MCP seed coating treatments was also less variable than the other application methods, suggesting that the coatings provided more uniform access to P. Seed coatings containing DCP at 10 kg P ha-1 increased phalaris plant height more than did drilled or broadcast applications at 40 kg P ha-1, but there was no effect of any DCP treatment on lucerne growth at 27 d.a.s. The relatively large differences observed in plant height between different application methods at 27 d.a.s. diminished over time until, at 57 d.a.s., only small differences were evident. The dry matter yield and P content of both species were increased by increasing rates of MCP, but DCP had little effect at any rate. The reduced differences between the seed coating treatments and the other application methods at harvest may have been due to the limited soil volume of the pots used; further work is necessary in larger soil volumes to determine the significance of the early growth advantage conferred on phalaris by the phosphorus seed coatings, and to find ways of protecting lucerne from soluble P sources during germination.

AC Caribou alfalfa

1992 ◽  
Vol 72 (3) ◽  
pp. 845-847
Author(s):  
R. Michaud ◽  
C. Richard
Keyword(s):  
Medicago Sativa ◽  
Research Station ◽  
Clavibacter Michiganensis ◽  
Maritime Provinces ◽  
Phytophthora Megasperma ◽  
Phytophthora Root Rot ◽  
Clavibacter Michiganensis Subsp ◽  
Cultivar Description ◽  
Medicago Sativa L ◽  
Moderately Resistant

AC Caribou alfalfa (Medicago sativa L.) is a cultivar developed by the Agriculture Canada Research Station in Sainte-Foy. It is similar to Iroquois in maturity, rate of growth, and fall dormancy. It is highly resistant to bacterial wilt (caused by Clavibacter michiganensis subsp. insidiosus (McCulloch) Davis, Gillaspie, Vidaver & Harris), resistant to verticillium wilt (caused by Verticillium albo-atrum Reinke & Berth.), and moderately resistant to phytophthora root rot (caused by Phytophthora megasperma Dreschs. f. sp. medicaginis T. Kuan & D. C. Erwin). AC Caribou, an alfalfa with fine leafy stems, is well suited for production in Quebec and the Maritime Provinces where winter survival may be a problem.Key words: Alfalfa, Medicago sativa, cultivar description

AC Nordica alfalfa

1994 ◽  
Vol 74 (1) ◽  
pp. 145-147 ◽  
Author(s):  
B. P. Goplen ◽  
B. D. Gossen
Keyword(s):  
Medicago Sativa ◽  
Winter Hardiness ◽  
Crown Rot ◽  
Research Station ◽  
Snow Mold ◽  
Peace River ◽  
Tap Root ◽  
Cultivar Description ◽  
Medicago Sativa L ◽  
Moderately Resistant

AC Nordica alfalfa (Medicago sativa L.) was developed by the Agriculture Canada Research Station at Saskatoon, Saskatchewan. It is similar to Beaver alfalfa in having a broad crown and a tap root with many branches. AC Nordica is 1–2 d earlier in maturity than Beaver. It is shorter than Beaver at 10% bloom, is slightly slower in regrowth following harvest, and displays less spring vigor. However, it excels in winter hardiness, rating similar to Anik and Drylander alfalfa. AC Nordica is highly resistant to bacterial wilt (Clavibacter michiganense subsp. insidiosum [McCulloch] Davis, Gillaspie, Vidaver & Harris), and moderately resistant to snow mold (Coprinus psychromorbidus Redhead & Traquair). AC Nordica is intended as a special-purpose cultivar for the northern prairies, the Peace River area of Alberta, and other high snowfall areas where snow mold (winter crown rot) may occur and where extreme winter hardiness is required. Key words: Alfalfa, Medicago sativa, winter hardiness, winter crown rot, snow mold, cultivar description

THE IMPORTANCE OF LEAF FROST RESISTANCE TO THE WINTER SURVIVAL OF SEEDLING STANDS OF ALFALFA

1982 ◽  
Vol 62 (2) ◽  
pp. 399-405 ◽  
Author(s):  
J. S. McKENZIE ◽  
G. E. McLEAN
Keyword(s):  
Medicago Sativa ◽  
Frost Resistance ◽  
Frost Damage ◽  
Winter Survival ◽  
Single Plant ◽  
Leaf Injury ◽  
Medicago Sativa L ◽  
Freezing Temperatures ◽  
Freezing Chamber

Plants propagated from single plant selections of the alfalfa cultivars Saranac and Luna (Medicago sativa L.), Beaver (M. media Pers.) and Anik (M. falcata L.) were transplanted into the field in May and subjected to a range of freezing temperatures at 3-wk intervals during August and September. A portable field freezing chamber was used to study the influence of frost on leaf injury in the fall and winterkill following the severe 1977–1978 winter. Leaves of all plants had the capacity to harden during the fall, but the selection from Anik was consistently the most frost hardy. Temperatures ranging from −4 to −5 °C in mid-August caused 50% leaf injury to the selections of Beaver, Saranac and Luna, while in late September, temperatures ranging from −9.5 to −10.5 °C were required to produce similar amounts of injury. In the Anik selection, −6 °C in mid-August caused 50% leaf injury, but in late September −12.5 °C caused less than 35% injury. Thus, the Anik selection appeared to start hardening about 3 wk earlier than all other selections. In all plants, the potential for winter injury during the 1977–1978 winter increased as a result of leaf frost damage during mid-August and early September in 1977. The application of these results to the winter survival of seedling stands of alfalfa is discussed.

scholarly journals Resistance to the alfalfa weevil in the Iranian collection of Medicago sativa

2020 ◽  
Vol 8 (3) ◽  
pp. 263-279
Author(s):  
Mohammad Reza Abbasi
Keyword(s):  
Medicago Sativa ◽  
Plant Height ◽  
Morphological Traits ◽  
Growth Habit ◽  
Breeding Programs ◽  
Alfalfa Weevil ◽  
Hypera Postica ◽  
Positive Linear Relationship ◽  
Fall Dormancy ◽  
Range Test

The Iranian collection of Medicago sativa (alfalfa, 502 accessions) was evaluated under field conditions to identify variation in resistance to the alfalfa weevil (Hypera postica Gyllenhal) between accessions over 4 years. Twenty-one accessions were identified as resistant (score 3) to semi-resistant (score 5) based on K-means cluster analysis. These materials were grouped into 10 groups by means of Duncan's Multiple Range Test. Susceptibility to alfalfa weevil was significantly correlated with some of the agro-morphological traits such as plant height (r = 0.314, P<0.01), regrowth rate (r = 0.435, P<0.01) and fall dormancy score (r = 0.284, P<0.01). In general, the resistant germplasm originated from elevated regions at high latitudes, where a co-evolution between the plant and the pest may have taken place. Multiple regression analysis showed a positive linear relationship between susceptibility to the alfalfa weevil and traits such as growth habit, plant height, length and width of the central leaflet and regrowth rate. The resulting bi-plot based on factor analysis ranked accessions for susceptibility to the pest. The identified germplasm should prove useful in alfalfa breeding programs to develop accessions resistant to the alfalfa weevil.

scholarly journals Effect of cumulative growing degree day on accumulation of alfalfa (Medicago sativa L.) root reserve saccharides

2008 ◽  
Vol 56 (2) ◽  
pp. 81-86
Author(s):  
Josef Hakl ◽  
Jaromír Šantrůček ◽  
Pavel Fuksa ◽  
Josef Kalista
Keyword(s):  
Medicago Sativa ◽  
Starch Content ◽  
Life Sciences ◽  
Vegetation Period ◽  
Water Soluble ◽  
Research Station ◽  
Growing Degree Days ◽  
Degree Days ◽  
Degree Day ◽  
Medicago Sativa L

The aim of this study was to investigate the relation between growing degree day method and accumulation of root reserve saccharides before over wintering by alfalfa (Medicago sativa L.) in the condition of Czech Republic. In 2002–2004, the field experiment was conducted at the Research station of the Czech University of Life Sciences in central Bohemia. The interval between summer and last autumn harvest was 40–50 days or 60–70 days, respectively. These intervals were expressed as cumulative growing degree-days (GDD) for each year. The plants were sampled in each autumn with four replicates for each variant; the average depth of sampling was 150 mm. The weight of roots, amount of starch, and water soluble saccharides (WSC) per m2 was determined. The total accumulation of root reserve saccharides was determined mainly by conditions during all vegetation period. The length of the interval or cumulative GDD influenced only variation of this basic amount. The GDD was corresponded better with starch content whilst WSC was more related to length of the interval. In central Bohemia condition, the GDD 600–700 °C was preliminary determined for maximal accumulation of root reserve saccharides. The GDD above this level did not significantly increase the root reserve accumulation. For exact verify of this model, other experiments in more sites are needed.

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