scholarly journals Some Interesting Traits of European and Asian Fragaria Species

HortScience ◽  
1997 ◽  
Vol 32 (3) ◽  
pp. 439A-439 ◽  
Author(s):  
Robert H. Bors ◽  
J. Alan Sullivan
Keyword(s):  
Disease Resistance ◽  
Powdery Mildew ◽  
Winter Hardiness ◽  
Hybrid Vigor ◽  
Cold Winter ◽  
High Susceptibility ◽  
Southern Ontario ◽  
Green Color ◽  
Dark Green ◽  
Fragaria Species

Several interesting attributes have been observed while working with European and Asian species of Fragaria. F. nilgerrensis has shown immunity to aphids and leaf diseases. F. iinumae produces runners that frequently have unusual tap roots. F. moschata demonstrated excellent winter hardiness in a water-logged field during an unusually long cold winter (1995–96) in southern Ontario, excellent leaf disease resistance, and high susceptibility to Botrytis. When grown in the greenhouse, F. moschata fruit taste like a concord grape. F. pentaphylla (Guelph P-1 and P-2) displayed unusually bright red-colored fruit that were uniformly wedged, firm, but lacking flavor. F. pentaphylla P-1 is extremely vigorous and immune to leaf diseases. F. nubicola and F. daltoniana are the smallest and least-vigorous plants in the Univ. of Guelph's collection, yet they appear to confer hybrid vigor to their progeny when crossed to other species. F. daltoniana's leaf has a waxy cuticle and dark green color similar to F. chiloensis. F. viridis has a spicy, cinnamon-like flavor. When F. viridis is crossed to most other diploids, powdery mildew and leaf diseases are prevalent. F. orientalis crosses easily to synthetic tetraploids, has a flavor similar to F. viridis and F. nubicola, but is extremely susceptible to viruses. Aroma is quite variable in F. vesca with the most desirable originating from Russian accessions.

OAC Elmira winter barley

1997 ◽  
Vol 77 (4) ◽  
pp. 639-640 ◽  
Author(s):  
D. E. Falk ◽  
E. Reinbergs ◽  
G. Meatherall
Keyword(s):  
Disease Resistance ◽  
Hordeum Vulgare ◽  
Winter Hardiness ◽  
Winter Barley ◽  
High Yield ◽  
Science Department ◽  
Hordeum Vulgare L ◽  
Southern Ontario ◽  
Agriculture And Food ◽  
The University

OAC Elmira is a high-yielding, disease-resistant, hardy winter barley adapted to Southern Ontario. OAC Elmira has good winter hardiness and high hectoliter weight. It has better disease resistance than any of the check cultivars and long straw with a lax, nodding head. It was developed by the Ontario Ministry of Agriculture and Food through the Crop Science Department of the University of Guelph. Key words: Hordeum vulgare L., high yield, disease resistance, winter hardiness

THE INTEGRATED PEAR DONORS WITH MONOGENIC DETERMINED STUNT

1970 ◽  
pp. 17-19
Author(s):  
Е. А. Dolmatov ◽  
Т. А. Khrykina
Keyword(s):  
Disease Resistance ◽  
Russian Federation ◽  
Fungal Disease ◽  
Winter Hardiness ◽  
Adaptive Potential ◽  
Research Institutes ◽  
Fungal Disease Resistance ◽  
Sorting Process ◽  
Red Coloration

Development of low-growing varieties is one of the prioritized directions in groups selection. Solution of excessive growth in the selection can be solved in today’s conditions by two means: on a polygenic and on a monogenic level. Up until recently such work was performed by research institutes of horticulture in the U.S.S.R. and Russian Federation only on the polygenic level. The analysis is performed for the data of 17 summer studies on the development of complex donors of monogenic determined dwarfness (gene D), high winter hardiness, group fungal disease resistance (scab, leaf spot and Septoria blight) and bright red coloration of pear fruits (gene C). On the first stage of these studies the issue of the development of population of hybrid dwarf types with high adaptive potential in the conditions of the Central Black Earth region of Russia was solved based on a hybridization of the donors of high winter hardiness and fungal disease resistance with the donors of monogenic determined dwarfness which were the descendants of 4th generation of the NainVert variety. As a result, several complex donors were selected. Its use in long-term pear selection programs would make sorting process possible on earlier stages of the ontogenesis and thanks to that would make it possible to halve the size of hybrid funds. Brief description of the complex donors is given.

scholarly journals Inheritance of Persistent-Green Color in Asparagus Officinalis, L.

1969 ◽  
Vol 51 (1) ◽  
pp. 71-76
Author(s):  
H. Irizarry ◽  
J. Howard Ellison ◽  
Portia Orton
Keyword(s):  
Quantitative Difference ◽  
Qualitative Difference ◽  
Recessive Gene ◽  
Asparagus Officinalis ◽  
Green Color ◽  
Pigment System ◽  
Plant Pigment ◽  
Dark Green ◽  
Or Genes ◽  
Color Gene

Two mature, dark-green asparagus plants (one female and one male) termed "persistent-green" were selected in a New Jersey asparagus field on November 11, 1959, when the other plants were yellow or brown. The two persistent-green plants were crossed; each of them was crossed also with normal plants for the genetic study of this character. A secondary part of this study was to determine the effect of the color gene or genes on the plant-pigment system by means of spectrophotometric analyses. An attempt also was made to identify the persistent-green mutants in the seedling stage. The study of the phenotypes of 17 F1, F2, and reciprocal BC1 progenies indicated that persistent-green color in asparagus is inherited as a single recessive gene. There was a large quantitative difference in chlorophyll and carotene between the persistent-green and normal plant complexes in October, but not in July. Apparently the persistent-green mutants retain chlorophyll and carotene much later in the season than do the normal plants. No qualitative difference in pigment was found in either July or October. Asparagus seedlings were easily classified as to persistent-green (green foliage) or normal (yellow foliage) in the greenhouse when the plants were 6 weeks old.

Molecular Markers for Powdery Mildew in Pea (Pisum sativum L.): A Review

2021 ◽  
Author(s):  
Reginah Pheirim ◽  
Noren Singh Konjengbam ◽  
Mayurakshee Mahanta
Keyword(s):  
Disease Resistance ◽  
Powdery Mildew ◽  
Powdery Mildew Resistance ◽  
Genetic Resistance ◽  
Disease Resistance Gene ◽  
Breeding Programs ◽  
Biotic Stresses ◽  
Pisum Sativum L ◽  
Development And Utilization ◽  
Mapping Populations

Powdery mildew is caused by an obligate parasite Erysiphe pisi and considered as one of the most important constraints causing yield reductions in pea. Development and utilization of genetic resistance is acknowledged as the most effective, economic and environmental friendly method of control. Therefore, development of cultivars with improved resistance to biotic stresses is a primary goal of plant breeding programs throughout the world. Three monogenic sources er1, er2 and Er3 have been described to govern the powdery mildew disease resistance. Several markers have been reported linked to resistant genes at varying distances in different mapping populations. Genetic markers linked to the disease resistance gene make the breeding process more efficient for the use of Marker Assisted Selection (MAS) strategy to aid in obtaining a complete powdery mildew resistance in pea.

scholarly journals Powdery mildew disease resistance and marker-assisted screening at the Pm60 locus in wild diploid wheat Triticum urartu

2020 ◽  
Vol 8 (2) ◽  
pp. 252-259
Author(s):  
Fukai Zhao ◽  
Yinghui Li ◽  
Baoju Yang ◽  
Hongbo Yuan ◽  
Cong Jin ◽  
...  
Keyword(s):  
Disease Resistance ◽  
Powdery Mildew ◽  
Diploid Wheat ◽  
Triticum Urartu ◽  
Powdery Mildew Disease

Effectiveness of major resistance genes and identification of new sources for disease resistance in wheat

2011 ◽  
Vol 59 (3) ◽  
pp. 241-248 ◽  
Author(s):  
G. Vida ◽  
M. Cséplő ◽  
G. Gulyás ◽  
I. Karsai ◽  
T. Kiss ◽  
...  
Keyword(s):  
Disease Resistance ◽  
Powdery Mildew ◽  
Leaf Rust ◽  
Resistance Genes ◽  
Rust Resistance ◽  
Genetic Material ◽  
Leaf Rust Resistance ◽  
Wheat Varieties ◽  
Major Resistance Genes ◽  
Greenhouse Tests

Among the factors which determine yield reliability an important role is played by disease resistance. One of the breeding aims in the Martonvásár institute is to develop wheat varieties with resistance to major diseases. The winter wheat varieties bred in Martonvásár are examined in artificially inoculated nurseries and greenhouses for resistance to economically important pathogens. The effectiveness of designated genes for resistance to powdery mildew and leaf rust has been monitored over a period of several decades. None of the designated major resistance genes examined in greenhouse tests is able to provide complete resistance to powdery mildew; however, a number of leaf rust resistance genes provide full protection against pathogen attack (Lr9, Lr19, Lr24, Lr25, Lr28 and Lr35). In the course of marker-assisted selection, efficient resistance genes (Lr9, Lr24, Lr25 and Lr29) have been incorporated into Martonvásár wheat varieties. The presence of Lr1, Lr10, Lr26, Lr34 and Lr37 in the Martonvásár gene pool was identified using molecular markers. New sources carrying alien genetic material have been tested for powdery mildew and leaf rust resistance. Valuable Fusarium head blight resistance sources have been identified in populations of old Hungarian wheat varieties. Species causing leaf spots (Pyrenophora tritici-repentis, Septoria tritici and Stagonospora nodorum) have gradually become more frequent over the last two decades. Tests on the resistance of the host plant were begun in Martonvásár four years ago and regular greenhouse tests on seedlings have also been initiated.

scholarly journals Viability of peach palm by-product, Spirulina platensis, and spinach for the enrichment of dehydrated soup

2018 ◽  
Vol 53 (11) ◽  
pp. 1259-1267
Author(s):  
Paulo Ricardo Los ◽  
Deise Rosana Silva Simões ◽  
Roberta de Souza Leone ◽  
Beatriz Cervejeira Bolanho ◽  
Taís Cardoso ◽  
...  
Keyword(s):  
Spirulina Platensis ◽  
Total Phenolic ◽  
Green Color ◽  
Peach Palm ◽  
Brazilian Legislation ◽  
Yellow Color ◽  
Microbiological Parameters ◽  
Market Niche ◽  
Dark Green ◽  
Pale Yellow Color

Abstract: The objective of this work was to develop dehydrated soup formulations using flour from peach palm by-product (PPB), Spirulina platensis or spinach, as well as to evaluate their composition by physical, chemical, instrumental, and sensory methods. Four formulations were developed: standard, PPB flour, PPB flour and S. platensis, and PPB flour and spinach. The samples were analyzed for proximate composition, chlorophyll content, total phenolic compounds, antioxidant activity, color, viscosity, water absorption, and microbiological parameters. The sensory characterization was performed by the check-all-that-apply method. The soups containing spinach or S. platensis presented the highest protein contents of 3.3 and 4.6 g 100 g-1, respectively. The soups formulated with the microalgae S. platensis showed higher contents of fibers, lipids, and antioxidants. Changes were observed in the color and viscosity of the soups. The standard dehydrated soup was characterized as shiny, creamy, with seasoning flavor and fragments, and a pale-yellow color; the formulation with spinach, as grainy, with an herb odor and flavor, seasoning fragments, and a dark-green color; and with S. platensis, with herb flavor, seasoning fragments, and a dark-green color. The developed formulations are within the microbiological standards for food established by the Brazilian legislation. The sensory analysis revealed a new market niche, and the soups containing PPB and S. platensis showed good acceptability. Peach palm flour, Spirulina platensis, and spinach are alternatives for the nutritional enrichment of dehydrated soups with high protein, ash, fiber, and antioxidant contents.

Disease resistance in the genusAegilops L. — stem rust, leaf rust, stripe rust, and powdery mildew

1985 ◽  
Vol 33 (2) ◽  
pp. 133-153 ◽  
Author(s):  
Jan Valkoun ◽  
Karl Hammer ◽  
Dagmar Kučerová ◽  
Pavel Bartoš
Keyword(s):  
Disease Resistance ◽  
Powdery Mildew ◽  
Leaf Rust ◽  
Stripe Rust ◽  
Stem Rust
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