scholarly journals Strawberry Cultivar Evaluation In Quebec

HortScience ◽  
1992 ◽  
Vol 27 (11) ◽  
pp. 1163h-1164
Author(s):  
Shahrokh Khanlzadeh ◽  
Michel J. Lareau ◽  
Deborah Buszard
Keyword(s):  
Total Yield ◽  
Harvest Date ◽  
Yield Variability ◽  
Ripening Period ◽  
Commercial Cultivars ◽  
Mcgill University ◽  
Strawberry Cultivar ◽  
Plant Characteristics ◽  
Strawberry Cultivars

During 1987-90, nineteen strawberry cultivars and one selection from Agriculture Canada/McGill University were evaluated for their fruiting and other plant characteristics. Based upon an index of potential return which Integrates percent yield at each harvest date and total yield, the following cultivars listed in decreasing order of desirability (early productivity) are recommended: `Chambly', `Annapolis', `Honeoye', `Kent' and `Cavendish'. `Lina', `Lester', SJ83OR-2, `Bounty' and `Settler' have the most concentrated ripening period based upon an index of concentration. Highest yields were obtained with `Honeoye', SJ83OR-2, `Chambly', `Kent', Glooscap` and `Oka'. All had large, medium-firm fruit. Because of their tolerance to the herbicide terbacil and their large, medium-firm fruit, `Chambly', `Oka' and SJ830R-2 appear to be potential replacements for the commercial cultivars `Kent', `Honeoye' and `Glooscap' and are recommended for trials in Quebec. `Cornwallis', `Settler', `Midway', `Cavendish' and `Redcoat' had the lowest yield variability of the cultivars on trial.

Strawberry Cultivar Performance and Susceptibility to Tarnished Plant Bug Injury

HortScience ◽  
1998 ◽  
Vol 33 (3) ◽  
pp. 460d-460
Author(s):  
D.T. Handley ◽  
M.A. Schupp ◽  
J.F. Dill
Keyword(s):  
Lower Order ◽  
Tarnished Plant Bug ◽  
Strawberry Cultivar ◽  
Marketable Fruit ◽  
Feeding Pressure ◽  
High Yields ◽  
Insecticide Sprays ◽  
Strawberry Cultivars

Twelve strawberry cultivars established in matted row plots in 1993 were treated with insecticides for tarnished plant bug or left untreated for the 1994, 1995, and 1996 seasons. `Honeoye', `Cavendish', and `Oka' had the highest yields of marketable fruit. `Jewel', `Chambly', and `Kent' had lower, but acceptable, yields. `Lateglow', `Blomidon', `Seneca, NY1424', `Settler', and `Governor Simcoe' had lower yields than other varieties. Tarnished plant bug populations were very low during the 1994 and 1996 seasons, and thus feeding pressure may have been too low for any differences in susceptibility between varieties to be expressed. In 1995, when tarnished plant bug feeding pressure was greatest, `Oka', `Cavendish', and `Honeoye' had the lowest injury levels. `Kent' and `Lateglow' had the highest levels of injury. Insecticide sprays significantly reduced the percent of injured fruit for most cultivars, but did not significantly increase the weight of marketable fruit harvested. This is due to injury being most prevalent on lower order, and thus smaller, fruit. Cultivars that produced high yields, had low injury levels, and had the least difference between sprayed and unsprayed treatments are most likely to have resistance to tarnished plant bug injury. `Oka', `Cavendish', and `Honeoye' were the most promising cultivars in this regard.

scholarly journals CHROMOSOME NUMBER AND TIME PERIOD OF MITOTIC CYCLE OF FESTIVAL AND CALIFORNICA STRAWBERRY CULTIVARS (Fragaria x ananassa AND Fragaria vesca)

2015 ◽  
Vol 2 (1) ◽  
pp. 476
Author(s):  
Ganies Riza Aristya ◽  
Rezika Alyza ◽  
Rosyidatul Khoiroh ◽  
Budi Setiadi Daryono
Keyword(s):  
Chromosome Number ◽  
Reverse Genetics ◽  
Fragaria X Ananassa ◽  
Fragaria Vesca ◽  
Time Period ◽  
Genomics Research ◽  
Strawberry Cultivar ◽  
Pre Treatment ◽  
Seed Propagation ◽  
Strawberry Cultivars

<p>The cultivated strawberries, Fragaria x ananassa and Fragaria vesca, are the most economically-important softfruit species. F x ananassa and F vesca, both diploid (2n=2x=14) relatives of the commercial octoploid strawberry, are an attractive model for functional genomics research in Rosaceae. Its small genome size, short reproductive cycle, and facile vegetative and seed propagation make F. x annassa and F.vesca a promising candidates for forward and reverse genetics experiments. In order to determine their genetic differences in more detail, chromosome characterization of the two strawberry cultivars was investigated. A method used for chromosome slides in this research was a squash method with modification in pre-treatment. The result showed Fragaria x ananassa had (2n = 4x = 28) chromosome number is 28 and Fragaria vesca had (2n = 2x = 14) chromosome number is 14. The time of mitotic that both strawberry cultivars was similar at 7 to 8.30 am. In addition, mixoploid cells were found in both strawberry cultivar indicating that these cultivars had been treated by mutagenic agents for a breeding program.</p><p><br /><strong>Keywords</strong> : Fragaria, chromosome, mitotic</p>

scholarly journals Nitrogen Fertilization of Strawberry Cultivars: Is Preplant Starter Fertilizer Needed?

EDIS ◽  
2007 ◽  
Vol 2007 (19) ◽  
Author(s):  
Bielinski M. Santos ◽  
Alicia J. Whidden
Keyword(s):  
Nitrogen Fertilization ◽  
Total Yield ◽  
N Fertilization ◽  
Starter Fertilizer ◽  
Fact Sheet ◽  
Strawberry Cultivars

HS-1116, a 2-page illustrated fact sheet by Bielinski M. Santos and Alicia J. Whidden, summarizes for growers the results of studies conducted to determine whether using preplant starter N fertilization increases strawberry early and total yield. Published August 2007. HS1116/HS370: Nitrogen Fertilization of Strawberry Cultivars: Is Preplant Starter Fertilizer Needed? (ufl.edu)

scholarly journals Evaluation of crop yield under different nitrogen doses of mineral fertilization

2010 ◽  
Vol 56 (No. 4) ◽  
pp. 163-167 ◽  
Author(s):  
Š. Matějková ◽  
J. Kumhálová ◽  
J. Lipavský
Keyword(s):  
Nitrogen Fertilizer ◽  
Total Yield ◽  
Yield Potential ◽  
Yield Variability ◽  
Production Potential ◽  
Mineral Fertilization ◽  
Winter Rape ◽  
Site Specific ◽  
Combine Harvester ◽  
Different Doses

Yields of winter wheat, winter rape and oats were evaluated in the field; the field was divided into the site-specific zones and treated with variable doses of nitrogen fertilizer in years 2004–2006. Measurements of the yields were carried out with a yield monitor placed in a combine harvester. The measured data were processed into the yield maps by means of ArcGIS 9.2 software. Variable application of fertilizer should balance yield potential of the field. Generally, total yield variability on the field after the application of various doses of experimental fertilizer was similar in the years 2004 (11.3%), 2005 (14.7%) and 2006 (11.7%) in comparison with the year 2003 (25.02%). Variable application of nitrogen in the site-specific zones, created on the basis of the yield levels, decreased the yield variability in comparison with the uniform dose. Different doses of nitrogen fertilizer also enabled to increase utilization of production potential of the experimental field.

Yield Comparison and Plant Character Correlations on 16 Panicum Accessions

1969 ◽  
Vol 55 (2) ◽  
pp. 174-183
Author(s):  
A. Sotomayor Ríos ◽  
A. Acosta Matienzo ◽  
J. Vélez Fortuño
Keyword(s):  
Puerto Rico ◽  
Dry Matter ◽  
Total Yield ◽  
Percent Level ◽  
Plant Introduction ◽  
Annual Total ◽  
Volume Resistance ◽  
Plant Characteristics ◽  
Disease Attack ◽  
Character Correlations

The annual total yields of green forage, dry matter and protein per acre were determined for 16 Panicums under irrigation at the Gurabo Substation, Gurabo, Puerto Rico, for a period of 2 years. The grasses were harvested at 60-day intervals. Selection 15, USDA P.I. 259553 (USDA Plant Introduction Number) was the highest yielder. It produced 95.60 tons of green forage and 23.84 tons of dry matter, per acre yearly. This selection outyielded the remaining 15 Panicums at the 5-percent level. The second highest dry-matter yielder was selection 11, USDA P.I. 259565 which produced 21.12 tons of dry matter per acre yearly. Prior to each 60-day cutting all forage plots were evaluated as to the following plant characters: tillering ability, rooting at the nodes, forage volume, resistance to ergot, resistance to a leafspot caused by Cercospora fusimaculans, flowering percentage and greenness; these character values were correlated with yields of total green forage, total dry matter and total protein. The ratings were from 1 to 9, 9 representing the best condition. The best correlations obtained were those of tillering ability and forage volume with total yield. Other significant correlations, with yield, although low, were greenness (positive) and rooting at the nodes (negative). It is concluded that the plant characters of forage volume and tillering ability can be of potential value in a selection program in the genus Panicum. On the other hand, the characters of rooting at the nodes, resistance to ergot, resistance to leafspot attacks, flowering and greenness apparently are of little value as compared to forage volume and tillering ability. The excellent yielding ability, resistance to disease attack and many other desirable morphological plant characteristics of selection 15 are indications that a Guineagrass superior to the present type is available in Puerto Rico. It warrants further testing under managed grazing conditions for a final-type evaluation.

Yield and Yield Components of Six Sweet Potato (Ipomoea batatas) Cultivars II. Variability and Possible Sources of Variation

1975 ◽  
Vol 11 (1) ◽  
pp. 49-58 ◽  
Author(s):  
S. B. Lowe ◽  
L. A. Wilson
Keyword(s):  
Sweet Potato ◽  
Yield Components ◽  
Ipomoea Batatas ◽  
Total Yield ◽  
Yield Variability ◽  
Tuber Development ◽  
Marketable Yield ◽  
Yield Variation ◽  
Planting Material ◽  
Sources Of Variation

SUMMARYVariabilities in total yield, marketable yield and components of yield (tuber numbers and mean tuber weights) were studied in six sweet potato cultivars over two seasons, in crops harvested at two dates. Yield variability was high, particularly in marketable tubers, and was related to either or both components of yield. High-yielding cultivars had lower variabilities and the commercial cultivar 049 the lowest. The contribution of yield components to variability in total yield was evaluated and sources of yield variation were attributed to planting material, tuber development and season.

scholarly journals 437 PB 212 EFFECT OF SOIL FUMIGATION WITH METHYL BROMIDE ON MINERAL NUTRITION OF STRAWBERRY

HortScience ◽  
1994 ◽  
Vol 29 (5) ◽  
pp. 493g-493
Author(s):  
M.E. Ragab ◽  
Kh. A. Okasha
Keyword(s):  
Total Yield ◽  
Dry Weight ◽  
Soil Fumigation ◽  
Growing Seasons ◽  
Zn And Cu In ◽  
Number Of Leaves ◽  
Strawberry Cultivar ◽  
Successive Season ◽  
Macro Nutrients ◽  
Plot Design

This study was earned out on strawberry (Fragana × ananassa, Duch.) during the tow successive season of 1988/1989 and 1989/1990, at the strawberry Improvement Center Experimental Farm at Omm saber, south Tahreer, El Behira Governorate. The objective of this work was to study the effect of strawberry cultivar Douglas A split-plot design with four replicates was adopted. The results indicated a substantial increase in the content of the available macro and micro nutrients in the fumigated soils compared to the non fumigated ones. A significant increase in the number of leaves per plant, fresh and dry weight, early and total yield per plant was recorded. Fumigation accompanied by fertilization increased the available content (N,P and K and (Fe, Mn, Zn, and Cu) in the soil in the both growing seasons compared to fumigated only or the control. Plants grown in the fumigated fertilized plots contained the highest amount of macro and macro nutrients in both the growing seasons. Fumigated non fertilized plots had the highest amount of available P and K than all other treatment The maximum early and total yield per plant was obtained from the fumigated non fertilized plots.

scholarly journals Performance of North American Strawberry Cultivars under Conditions Mimicking California Production Systems

1994 ◽  
Vol 119 (5) ◽  
pp. 1034-1038 ◽  
Author(s):  
John M. Rariden ◽  
Douglas V. Shaw
Keyword(s):  
United States ◽  
Variance Components ◽  
Production Systems ◽  
Southeastern United States ◽  
Total Yield ◽  
The Other ◽  
Phenotypic Variance ◽  
Growth Attributes ◽  
Geographic Regions ◽  
Strawberry Cultivars

Runner plants from 16 strawberry (Fragaria ×ananassa Duch.) cultivars were grown using annual Mediterranean production systems to test for differences in productivity, performance traits, and vegetative growth attributes. Genotypes were included from germplasm adapted to four geographic regions: California and northwestern, northeastern, and mid-Atlantic or southeastern United States. The California genotypes were divided further into day-neutral and June-bearing categories. With these treatments, California cultivars had significantly larger plants and grew more rapidly during the fall and winter, had larger fruit, and produced at least twice the quantity of fruit of cultivars from the other regions. Variance components due to region explained 64% and 26% of the phenotypic variance for early and total yield, respectively, whereas differences among cultivars within regions explained 12% and 7% of the variance for these traits. Cultivars from all regions had significantly larger plants and were more productive when treated with 3 weeks of artificial vernalization. However, region × vernalization effects were nonsignificant for all traits, a result suggesting that selection in Mediterranean environments has not adapted germplasm specifically for low vernalization conditions.

scholarly journals Strawberry Cultivar Injury After Two Contrasting Minnesota Winters

2009 ◽  
Vol 19 (4) ◽  
pp. 803-808 ◽  
Author(s):  
Shengrui Yao ◽  
James J. Luby ◽  
David K. Wildung
Keyword(s):  
Snow Cover ◽  
Weather Conditions ◽  
Winter Hardiness ◽  
Severe Winter ◽  
Straw Mulch ◽  
Grand Rapids ◽  
Soil Temperatures ◽  
Strawberry Cultivar ◽  
Plant Stand ◽  
Strawberry Cultivars

As part of our hardy strawberry (Fragaria ×ananassa) breeding program, winter hardiness of 15 strawberry cultivars was evaluated in the field after Winter 2005–2006 and a test Winter 2006–2007 with no snow cover at Grand Rapids, MN. After the snow-covered Winter 2005–2006, plant stand (percent leaf coverage for the designated area for each plot) increased for all cultivars in the mulched treatment and some cultivars in the unmulched treatment with slight decreases only for several cultivars in the unmulched treatment. However, after Winter 2006–2007, the plant stands of all cultivars drastically decreased in both mulched and unmulched treatments. ‘Clancy’, ‘Evangeline’, and ‘L'Amour’ were the three most sensitive cultivars among the 15 cultivars tested. ‘Kent’, ‘Mesabi™’, ‘Cavendish’, and ‘Brunswick’ were the highest yielding cultivars for both 2006 and 2007 in the mulched treatment. In the unmulched treatment, ‘Brunswick’, ‘Mesabi™ ’, ‘Cavendish’, ‘Sable’, and ‘Kent’ were the top yielding cultivars after Winter 2006–2007. During Winter 2005–2006, with 20 to 30 cm snow cover throughout the season, the 5- and 10-cm soil temperatures remained constant at ≈30 to 31.5 °F in both mulched and unmulched treatments. In contrast, during Winter 2006–2007, there were 16 and 24 days (consecutive) in February below 18 °F at 5-cm soil depths for mulched and unmulched treatments, respectively, which probably led to the severe winter damage. Although straw mulch afforded the plants some protection, snow cover is critical to the survival of strawberries in northern Minnesota and other areas with similar weather conditions.

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