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Your search keyword '"Saintpaulia"' showing total 33 results
Start Over Descriptor "Saintpaulia" Publication Year Range More than 50 years ago
33 results on '"Saintpaulia"'

1. Retail saintpaulia price list - fall 1959

Author

Richter'S Greenhouse, Henry G. Gilbert Nursery and Seed Trade Catalog Collection, U.S. Department of Agriculture, National Agricultural Library, Richter'S Greenhouse, and Henry G. Gilbert Nursery and Seed Trade Catalog Collection

Subjects
Catalogs, Cuttings, Hammond, Indiana, Nursery stock, Saintpaulia, Varieties
Published
1959

2. Retail saintpaulia price list - spring 1959

Author

Richter'S Greenhouse, Henry G. Gilbert Nursery and Seed Trade Catalog Collection, U.S. Department of Agriculture, National Agricultural Library, Richter'S Greenhouse, and Henry G. Gilbert Nursery and Seed Trade Catalog Collection

Subjects
Catalogs, Cuttings, Hammond, Indiana, Nursery stock, Saintpaulia, Varieties
Published
1959

3. Wholesale saintpaulia price list - fall 1957 : wholesale and retail growers

Author

Richter'S Greenhouse, Henry G. Gilbert Nursery and Seed Trade Catalog Collection, U.S. Department of Agriculture, National Agricultural Library, Richter'S Greenhouse, and Henry G. Gilbert Nursery and Seed Trade Catalog Collection

Subjects
Catalogs, Hammond, Indiana, Nursery stock, Saintpaulia, Varieties
Published
1957

4. Retail saintpaulia price list - fall 1957 : wholesale and retail growers

Author

Richter'S Greenhouse, Henry G. Gilbert Nursery and Seed Trade Catalog Collection, U.S. Department of Agriculture, National Agricultural Library, Richter'S Greenhouse, and Henry G. Gilbert Nursery and Seed Trade Catalog Collection

Subjects
Catalogs, Cuttings, Hammond, Indiana, Nursery stock, Saintpaulia, Varieties
Published
1957

5. Price list : spring, 1954

Author

Russward (Firm), Henry G. Gilbert Nursery and Seed Trade Catalog Collection, U.S. Department of Agriculture, National Agricultural Library, Russward (Firm), and Henry G. Gilbert Nursery and Seed Trade Catalog Collection

Subjects
African violets, Arkansas, Catalogs, Jonesboro, Nursery stock, Saintpaulia, Varieties
Published
1954

6. Price list : fall, 1954

Author

Russward (Firm), Henry G. Gilbert Nursery and Seed Trade Catalog Collection, U.S. Department of Agriculture, National Agricultural Library, Russward (Firm), and Henry G. Gilbert Nursery and Seed Trade Catalog Collection

Subjects
African violets, Arkansas, Catalogs, Jonesboro, Nursery stock, Saintpaulia, Varieties
Published
1954

7. Price list : spring, 1953, mail order only

Author

Russward (Firm), Henry G. Gilbert Nursery and Seed Trade Catalog Collection, U.S. Department of Agriculture, National Agricultural Library, Russward (Firm), and Henry G. Gilbert Nursery and Seed Trade Catalog Collection

Subjects
African violets, Arkansas, Catalogs, Jonesboro, Nursery stock, Saintpaulia, Varieties
Published
1953

8. Price list : fall, 1953, mail order only

Author

Russward (Firm), Henry G. Gilbert Nursery and Seed Trade Catalog Collection, U.S. Department of Agriculture, National Agricultural Library, Russward (Firm), and Henry G. Gilbert Nursery and Seed Trade Catalog Collection

Subjects
African violets, Arkansas, Catalogs, Jonesboro, Nursery stock, Saintpaulia, Varieties
Published
1953

9. News letter : July, 1951

Author

Russward (Firm), Henry G. Gilbert Nursery and Seed Trade Catalog Collection, U.S. Department of Agriculture, National Agricultural Library, Russward (Firm), and Henry G. Gilbert Nursery and Seed Trade Catalog Collection

Subjects
Arkansas, Catalogs, Jonesboro, Nursery stock, Saintpaulia, Varieties
Published
1951

10. News letter : November, 1951

Author

Russward (Firm), Henry G. Gilbert Nursery and Seed Trade Catalog Collection, U.S. Department of Agriculture, National Agricultural Library, Russward (Firm), and Henry G. Gilbert Nursery and Seed Trade Catalog Collection

Subjects
Arkansas, Catalogs, Jonesboro, Nursery stock, Saintpaulia, Varieties
Published
1951

11. News letter : March, 1951

Author

Russward (Firm), Henry G. Gilbert Nursery and Seed Trade Catalog Collection, U.S. Department of Agriculture, National Agricultural Library, Russward (Firm), and Henry G. Gilbert Nursery and Seed Trade Catalog Collection

Subjects
Arkansas, Catalogs, Jonesboro, Nursery stock, Saintpaulia, Varieties
Published
1951

12. News letter : February, 1951

Author

Russward (Firm), Henry G. Gilbert Nursery and Seed Trade Catalog Collection, U.S. Department of Agriculture, National Agricultural Library, Russward (Firm), and Henry G. Gilbert Nursery and Seed Trade Catalog Collection

Subjects
Arkansas, Catalogs, Jonesboro, Nursery stock, Saintpaulia, Varieties
Published
1951

13. News letter : August, 1951

Author

Russward (Firm), Henry G. Gilbert Nursery and Seed Trade Catalog Collection, U.S. Department of Agriculture, National Agricultural Library, Russward (Firm), and Henry G. Gilbert Nursery and Seed Trade Catalog Collection

Subjects
Arkansas, Catalogs, Jonesboro, Nursery stock, Saintpaulia, Varieties
Published
1951

14. News letter : September, 1951

Author

Russward (Firm), Henry G. Gilbert Nursery and Seed Trade Catalog Collection, U.S. Department of Agriculture, National Agricultural Library, Russward (Firm), and Henry G. Gilbert Nursery and Seed Trade Catalog Collection

Subjects
Arkansas, Catalogs, Jonesboro, Nursery stock, Saintpaulia, Varieties
Published
1951

15. News letter : October, 1951

Author

Russward (Firm), Henry G. Gilbert Nursery and Seed Trade Catalog Collection, U.S. Department of Agriculture, National Agricultural Library, Russward (Firm), and Henry G. Gilbert Nursery and Seed Trade Catalog Collection

Subjects
Arkansas, Catalogs, Jonesboro, Nursery stock, Saintpaulia, Varieties
Published
1951

16. News letter : April, 1950

Author

Russward (Firm), Henry G. Gilbert Nursery and Seed Trade Catalog Collection, U.S. Department of Agriculture, National Agricultural Library, Russward (Firm), and Henry G. Gilbert Nursery and Seed Trade Catalog Collection

Subjects
African violets, Arkansas, Jonesboro, Nursery stock, Prices, Saintpaulia, Varieties
Published
1950

17. News letter : June, 1950

Author

Russward (Firm), Henry G. Gilbert Nursery and Seed Trade Catalog Collection, U.S. Department of Agriculture, National Agricultural Library, Russward (Firm), and Henry G. Gilbert Nursery and Seed Trade Catalog Collection

Subjects
African violets, Arkansas, Jonesboro, Nursery stock, Prices, Saintpaulia, Varieties
Published
1950

18. News letter : February, 1950

Author

Russward (Firm), Henry G. Gilbert Nursery and Seed Trade Catalog Collection, U.S. Department of Agriculture, National Agricultural Library, Russward (Firm), and Henry G. Gilbert Nursery and Seed Trade Catalog Collection

Subjects
African violets, Arkansas, Jonesboro, Nursery stock, Prices, Saintpaulia, Varieties
Published
1950

19. News letter : October, 1950

Author

Russward (Firm), Henry G. Gilbert Nursery and Seed Trade Catalog Collection, U.S. Department of Agriculture, National Agricultural Library, Russward (Firm), and Henry G. Gilbert Nursery and Seed Trade Catalog Collection

Subjects
African violets, Arkansas, Jonesboro, Nursery stock, Prices, Saintpaulia, Varieties
Published
1950

20. News letter : September, 1950

Author

Russward (Firm), Henry G. Gilbert Nursery and Seed Trade Catalog Collection, U.S. Department of Agriculture, National Agricultural Library, Russward (Firm), and Henry G. Gilbert Nursery and Seed Trade Catalog Collection

Subjects
African violets, Arkansas, Catalogs, Jonesboro, Nursery stock, Saintpaulia, Varieties
Published
1950

21. News letter : November, 1950

Author

Russward (Firm), Henry G. Gilbert Nursery and Seed Trade Catalog Collection, U.S. Department of Agriculture, National Agricultural Library, Russward (Firm), and Henry G. Gilbert Nursery and Seed Trade Catalog Collection

Subjects
African violets, Arkansas, Jonesboro, Nursery stock, Prices, Saintpaulia, Varieties
Published
1950

22. News letter : March, 1950

Author

Russward (Firm), Henry G. Gilbert Nursery and Seed Trade Catalog Collection, U.S. Department of Agriculture, National Agricultural Library, Russward (Firm), and Henry G. Gilbert Nursery and Seed Trade Catalog Collection

Subjects
African violets, Arkansas, Jonesboro, Nursery stock, Prices, Saintpaulia, Varieties
Published
1950

23. News letter : December, 1950

Author

Russward (Firm), Henry G. Gilbert Nursery and Seed Trade Catalog Collection, U.S. Department of Agriculture, National Agricultural Library, Russward (Firm), and Henry G. Gilbert Nursery and Seed Trade Catalog Collection

Subjects
African violets, Arkansas, Jonesboro, Nursery stock, Poetry, Prices, Saintpaulia, Varieties
Published
1950

24. Newsletter and price list : November 1949

Author

Russward (Firm), Henry G. Gilbert Nursery and Seed Trade Catalog Collection, U.S. Department of Agriculture, National Agricultural Library, Russward (Firm), and Henry G. Gilbert Nursery and Seed Trade Catalog Collection

Subjects
African violets, Arkansas, Jonesboro, Nursery stock, Prices, Saintpaulia, Varieties
Published
1949

25. Price list, September 1949

Author

Russward (Firm), Henry G. Gilbert Nursery and Seed Trade Catalog Collection, U.S. Department of Agriculture, National Agricultural Library, Russward (Firm), and Henry G. Gilbert Nursery and Seed Trade Catalog Collection

Subjects
African violets, Arkansas, Jonesboro, Nursery stock, Prices, Saintpaulia, Varieties
Published
1949

26. Price list, October 1949

Author

Russward (Firm), Henry G. Gilbert Nursery and Seed Trade Catalog Collection, U.S. Department of Agriculture, National Agricultural Library, Russward (Firm), and Henry G. Gilbert Nursery and Seed Trade Catalog Collection

Subjects
African violets, Arkansas, Jonesboro, Nursery stock, Prices, Saintpaulia, Varieties
Published
1949

27. Newsletter and price list : December 1949

Author

Russward (Firm), Henry G. Gilbert Nursery and Seed Trade Catalog Collection, U.S. Department of Agriculture, National Agricultural Library, Russward (Firm), and Henry G. Gilbert Nursery and Seed Trade Catalog Collection

Subjects
African violets, Arkansas, Jonesboro, Nursery stock, Prices, Saintpaulia, Varieties
Published
1949

28. PHYSIOLOGICAL RING PATTERN IN SOME GESNERACEAE.

Author

Hollings, M.

Subjects
GESNERIACEAE, GLOXINIAS, SAINTPAULIA, PLANT diseases, SUNSHINE
Abstract

This article presents a study on the cause of physiological ring pattern in some Gesneraceae. From all the experiments it is clear that sudden chilling of the leaves of these plants in sunlight is the cause of the ring and line patterns, and of the more severe total yellowing and necrosis that can be developed. The damage is done almost immediately after contact with the chilling agent, but may not become visible until later. Damage is apparently cumulative, since repeated daily watering under slight shade conditions result in progressively more severe damage, whereas a single watering may have no visible effect. Only slight markings are produced by chilling under conditions of moderate shading, and none occurs under heavier shade. No exact figure can be given for the threshold of light intensity necessary to induce susceptibility, but no markings could be produced in shade conditions where the incident light did not exceed 30 foot-candles.

Published
1955
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29. The effect of ethylene and ionizing radiation on Saintpaulia peroxidase activity

Author

R.A. Nilan, D.L. Warfield, and R.E. Witters

Subjects
Ethylene, biology, Saintpaulia, Polyacrylamide, Plant Science, biology.organism_classification, Isozyme, Ionizing radiation, chemistry.chemical_compound, X-ray treatment, chemistry, Biochemistry, biology.protein, High doses, Agronomy and Crop Science, Ecology, Evolution, Behavior and Systematics, Peroxidase
Abstract

Ethylene gas and X rays, alone and in combination, were applied to petioles of Saintpaulia ionantha Wendl. to test their effect on peroxidase activity. Both agents increased peroxidase activity, although ethylene was the most effective. X ray treatment of petioles at five different peroxidase levels showed that as the initial activity of peroxidase increased the effect of a given dose of radiation decreased. Also, high doses, near the lethal limit for the species, were proportionately less effective in inducing peroxidase activity than were lower doses. Polyacrylamide disc electrophoresis showed no change in isozyme patterns with increases in peroxidase activity.

Published
1975
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30. Mutation breeding of Achimenes

Author

C. Broertjes

Subjects
Mutation breeding, biology, Saintpaulia, Mutant, Plant physiology, Plant Science, Horticulture, biology.organism_classification, Apex (geometry), chemistry.chemical_compound, Streptocarpus, chemistry, Botany, Genetics, Colchicine, Achimenes, Agronomy and Crop Science
Abstract

Freshly cut leaves of Achimenes cv. Paul Arnold were irradiated with X-rays or fast neutrons, or treated with colchicine and then allowed to root and form adventitious buds. As found previously in Saintpaulia and Streptocarpus, almost exclusively solid, non-chimeral mutants or tetraploids were, respectively, obtained by using the adventitious bud technique, demonstrating that the apex of such buds originates from single cells.

Published
1972
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31. PYTHIUM ROT OF SAINTPAULIA, THE AFRICAN VIOLET

Author

H. S. Thompson

Subjects
Host (biology), Saintpaulia, parasitic diseases, fungi, Botany, Crown (botany), food and beverages, Plant Science, Pythium, Biology, biology.organism_classification, Bacteria, Pythium ultimum
Abstract

Many fungi and bacteria were isolated from African violets affected with root and crown rot, but, of these, Pythium ultimum Trow was the only organism that proved to be pathogenic to this host. P. ultimum readily infected leaf cuttings, rooted cuttings, and the petioles and leaves of plants when these were in contact with moist infested soil. Inoculum placed against the crown of a healthy plant also caused infection, but the lesion developed slowly and usually only a small amount of tissue was decayed. On the other hand, when the crowns and roots of healthy plants were set in infested soil they remained healthy; but they became predisposed to attack when they were subjected to prolonged exposure to light of very high intensity or when the roots were infested with nematodes (Meloidogyne sp.). Alternating periods of overwatering and drying did not increase the susceptibility of these healthy plants. When young plants, large enough to be planted singly in soil, were allowed to remain in vermiculite, a nonnutritive substrate, until they yellowed and were then planted in infested soil, they became infected and completely decayed. However, plants at least a year old that had been placed in vermiculite until they yellowed and were then planted in infested soil did not become infected.Infection and decay of leaf or rooted cuttings caused by P. ultimum occurred readily throughout the range of 10°–30 °C. The disease also occurred over a wide range of soil moisture, but was favored by the higher levels.When leaf cuttings and rooted cuttings of 30 varieties of African violets were planted in infested soil, all varieties proved susceptible.

Published
1958
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32. CYTOLOGICAL STUDIES IN SAINTPAULIA WENDL. (GESNERIACEAE)

Author

Howard G. Ehrlich

Subjects
Vegetative reproduction, Saintpaulia, Taproot, Plant Science, Plant anatomy, Biology, Meristem, biology.organism_classification, Gesneriaceae, Botany, Shoot, Genetics, Primordium, Ecology, Evolution, Behavior and Systematics
Abstract

KRAUS, E. J., NELLIE A. BROWN, AND K. C. HAMNER. 1936. Histological reactions of bean plants to indoleacetic acid. Bot. Gaz. 98: 370-419. LEVINE, M. 1950a. The growth of normal plant tissue in vitro as affected by chemical carcinogens and plant growth substances. I. The culture of the carrot taproot meristem. Amer. Jour. Bot. 37: 445-470. . 1950b. The growth of normal plant tissues as affected by chemical carcinogens and plant growth substances. III. The culture of sunflower and tobacco stem segments. Bull. Torrey Bot. Club 77: 110-132. PIE:iRCE, G. J. I893. On the structure of some phaneroganmiic parasites. Ann. Bot. 7: 291-327. PRIESTLEY, J. H. AND C. F. SWINGLE. 1929. Vegetative propagation from the standpoint of plant anatomy. U. S. Dept. Agr. Tech. Bull. 151. SCHUMACHER, W. 1934. Die Absorptionsorgane von Cuscuta odorata und der Stoffiibertritt aus den Siebrohen der Wirtspflanze. Jarb. Wiss. Bot. 80: 79-91. SIEGLER, E. A. AND J. J. BOWMAN. 1939. Anatomical studies of root and shoot primordia in 1-year apple roots. Jour. Agric. Res. 58: 795-803.

Published
1958
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33. Biology and Control of a Root-feeding Mealybug on Saintpaulia1

Author

Robert Snetsinger

Subjects
Ecology, biology, Adult female, Saintpaulia, General Medicine, Ovoviviparity, biology.organism_classification, Toxicology, chemistry.chemical_compound, chemistry, Insect Science, Botany, Endrin, Aldrin, PEST analysis, Mealybug
Abstract

Rhizoecus pritchardi McKenzie has within the past 2 years become a serious pest of the African violet, Saintpaulia ionanthia , in the eastern United States. This species (If root-feeding mealybug was reared under laboratory conditions. Two to 4 months were required to complete a generation. The adult female (no males were observed) is ovoviviparous and gives birth to an average of 54 young. Effective sanitation practices supplemented with applications of aldrin or endrin provided satisfactory control.

Published
1966
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