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You searched for: Subject agronomic traits Remove constraint Subject: agronomic traits Subject term agronomic traits Remove constraint Subject term: agronomic traits
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1. Application of Technology of Gene Expression in Response to Drought Stress and Elimination of Preharvest Aflatoxin Contamination

Author:
Guo, Baozhu Z.; Holbrook, C. Corley; Yu, Jiujiang; Lee, Dewey R.; Lynch, Robert E.
Source:
Aflatoxin and food safety / edited by Hamed K. Abbas pp. -
Subject:
field crops; Zea mays; Arachis hypogaea; water stress; plant response; genomics; preharvest treatment; aflatoxins; transgenic plants; transgenes; plant stress; stress tolerance; agronomic traits; plant-incorporated protectants; Aspergillus flavus; Aspergillus parasiticus; microarray technology
Handle:
10113/48241

2. Breeding objectives in forages

Author:
Casler, Michael D.; Van Santen, Edzard
Source:
Fodder crops and amenity grasses / Beat Boller, Ulrich K. Posselt, Fabio Veronesi, editors pp. -
Subject:
plant growth; plant development; nitrogen fixation; forage legumes; agronomic traits; forage grasses; forage quality; disease resistance; plant reproduction; abiotic stress; pest resistance; selection criteria; stress tolerance
Handle:
10113/39377

3. Breeding sorghum and pearl millet for forage and fuel

Author:
Pedersen, J.F.
Source:
Proceedings of the International Conference on Genetic Improvement of Sorghum and Pearl Millet : September 22-27, 1996, Holiday Inn Plaza, Lubbock, Texas pp. -
Subject:
genetic improvement; Pennisetum glaucum; agronomic traits; forage grasses; crop yield; forage quality; biofuels; Sorghum bicolor; biomass; pulp
Handle:
10113/44100

4. Castor

Author:
Auld, Dick L.; Zanotto, Mauricio D.; McKeon, Thomas; Morris, John B.
Source:
Oil crops / edited by Johann Vollmann, Istvan Rajcan pp. -
Subject:
plant genetics; castor beans; fatty acid composition; castor oil; Ricinus communis; agronomic traits; plant genetic resources
Handle:
10113/39314

5. Cotton

Author:
Hague, Steve; Hinze, Lori; Frelichowski, James
Source:
Oil crops / edited by Johann Vollmann, Istvan Rajcan pp. -
Subject:
cotton; plant genetics; Gossypium hirsutum; agronomic traits; plant genetic resources; disease resistance; fiber quality; pest resistance
Handle:
10113/38991

6. Evaluation and development of low-phytate crops

Author:
Cichy, Karen; Raboy, Victor
Source:
Modification of seed composition to promote health and nutrition / Hari Krishnan, editor pp. -
Subject:
feed grains; phytic acid; grain crops; animal nutrition; nutrient availability; human nutrition; biochemical pathways; agronomic traits; livestock; genotype; food grains; food composition; legumes; genetic engineering; digestibility; plant physiology; animal feeding
Handle:
10113/33610

7. Genetic engineering of plum (Prunus domestica L.) for plant improvement and genomics research in Rosaceae

Author:
Petri, Cesar; Scorza, Ralph; Dardick, Chris
Source:
Genetics and genomics of Rosaceae / Kevin M. Folta, Susan E. Gardiner, editors pp. -
Subject:
genetic transformation; Prunus domestica; Agrobacterium radiobacter; transgenic plants; genetic improvement; agronomic traits; genetic engineering; disease resistance; genomics
Handle:
10113/33600

8. Genomics opportunities, new crops and new products

Author:
Bassil, Nahla; Lewers, Kimberly
Source:
Genetics and genomics of Rosaceae / Kevin M. Folta, Susan E. Gardiner, editors pp. -
Subject:
Rosaceae; ornamental plants; plant genetics; marker-assisted selection; genetic improvement; agronomic traits; disease resistance; genomics; pest resistance; genetic markers
Handle:
10113/33599

9. Grasses and legumes: genetics and plant breeding

Author:
Brummer, E. Charles; Bouton, Joseph H.; Casier, Michael D.; McCaslin, Mark H.; Waldron, Blair L.
Source:
Grassland : quietness and strength for a new American agriculture / Walter F. Wedin and Steven L. Fales, editors pp. -
Subject:
germplasm; plant genetics; Fabaceae; forage legumes; agronomic traits; forage grasses; Poaceae; plant genetic resources; legumes; United States
Handle:
10113/33446

10. Health aspects and antiaflatoxigenic activity of phytochemicals in tree nuts

Author:
Molyneux, Russell J.; Mahoney, Noreen; Kim, Jong H.; Campbell, Bruce C.
Source:
Tree nuts : composition, phytochemicals, and health effects / edited by Cesarettin Alasalvar, Fereidoon Shahidi pp. -
Subject:
food spoilage; chemotypes; medicinal plants; structure-activity relationships; walnuts; oxidative stress; postharvest diseases; secondary metabolites; phytoalexins; antifungal properties; gallic acid; cultivars; phytochemicals; aflatoxins; varietal resistance; ellagic acid; tannins; hydrolysis; antioxidant activity; antioxidants; molds (fungi); stress tolerance; toxigenic strains; agronomic traits
Handle:
10113/34082

11. Inheritance of acid-soil tolerance in sorghum (Sorghum bicolor) grown on an ultisol

Author:
Flores, C.I.; Gourley, L.M.; Pedersen, J.F.; Clark, R.B.
Source:
Plant-soil interactions at low pH : proceedings of the Second International Symposium on Plant-Soil Interactions at Low pH, 24-29 June, 1990, Beckley, West Virginia, USA / edited by R.J. Wright, V.C. Baligar, R.P. Murrmann pp. -
Subject:
Sorghum bicolor; acid tolerance; aluminum; toxicity; inheritance (genetics); hybrids; additive gene effects; grain yield; roots; agronomic traits; tropical soils; acid soils
Handle:
10113/36759

12. Molecular and biochemical characterization of puroindoline A and B alleles in Chinese improved cultivars and landraces

Author:
He, Z.H.; Chen, F.; Xia, X.C.; Xia, L.Q.; Zhang, X.Y.; Lillemo, M.; Morris, C.F.
Source:
Wheat production in stressed environments : proceedings of the 7th International Wheat Conference, 27 November - 2 December 2005, Mar del Plata, Argentina / edited by H.T. Buck, J.E. Nisi, and N. Salomón pp. -
Subject:
cultivars; alleles; seeds; landraces; evolution; hardness; wheat; amino acid sequences; agronomic traits; Triticum aestivum; nucleotide sequences; agricultural history; China
Abstract:
... Kernel hardness conditioned by puroindoline genes has a profound effect on milling, baking and end-use quality of bread wheat. In this study, 251 current cultivars and advanced lines, 166 historical cultivars, and 219 landraces from China were investigated for their kernel hardness and puroindoline alleles using molecular and biochemical markers. The frequencies of soft, mixed and hard genotypes w ...
Handle:
10113/7054

13. New crops breeding: Lesquerella

Author:
Dierig, David; Ray, Dennis T.
Source:
Oil crops / edited by Johann Vollmann, Istvan Rajcan pp. -
Subject:
fatty acid composition; plant fats and oils; agronomic traits; Lesquerella; plant genetic resources; oilseed crops; domestication
Handle:
10113/39315

14. Performance of cotton cultivars and strains in South Carolina - 1998

Author:
May, O.L.; Sullivan, M.J.; Barefield, D.K. Jr.; Robinson, D.M.; Veasey, G.M.
Source:
Performance of field crops in South Carolina section 3, cotton / O.L. May ... [et al.] pp. -
Subject:
cotton; variety trials; cultivars; Gossypium hirsutum; geographical variation; agronomic traits; fiber quality; lint yield; South Carolina
Handle:
10113/47655

15. A study of statistical methods with barley

Author:
Whitcomb, W.O.
Source:
Agronomy journal 1913 v.5 no.2 pp. 83-101
ISSN:
0002-1962
Subject:
Hordeum vulgare; stems; genetic variance; statistical analysis; agronomic traits; crop yield
Abstract:
... The results obtained by the study of these two methods with barley may be summarized as follows: The material used in this study consists of two varieties of barley known as New Zealand and Berkeley, respectively. Each variety consists of thirty pure lines of ten plants each, or three humdred plants in all. A comparison of the constants for the five characters when determined by using the average ...
DOI:
10.2134/agronj1913.00021962000500020004x

16. Correlations between ear characters and yield in corn

Author:
Love, H.H.; Wentz, J.B.
Source:
Agronomy journal 1917 v.9 no.7 pp. 315-322
ISSN:
0002-1962
Subject:
Zea mays; correlation; crop yield; dimensions; weight; agronomic traits
Abstract:
... The characters of length, ratio of tip circumference to butt circumference, average circumference of cob, weight, average weight of kernels, number of rows of kernels, and average length and width of kernels on the seed ears do not show correlations significant enough to be of value in judging seed corn. The data indicate a slight negative correlation between percentage of grain in the seed ear an ...
DOI:
10.2134/agronj1917.00021962000900070002x

17. Some effects of successive cropping to barley

Author:
Gericke, W.F.
Source:
Agronomy journal 1917 v.9 no.7 pp. 325-332
ISSN:
0002-1962
Subject:
Hordeum vulgare; continuous cropping; agronomic traits; crop yield; grains; greenhouse experimentation
Abstract:
... In an experiment to determine some of the effects of continuous cropping of a soil under greenhouse conditions, barley was grown in pots, the successive crops being grown concurrently in order to eliminate as much as possible such factors of differences as climate and season. Plants of the fourth crop matured with greater uniformity than those of any of the other crops. There were no barren stalks ...
DOI:
10.2134/agronj1917.00021962000900070004x

18. An annual variety of Melilotus alba

Author:
Coe, H.S.
Source:
Agronomy journal 1917 v.9 no.8 pp. 380-382
ISSN:
0002-1962
Subject:
varieties; agronomic traits
DOI:
10.2134/agronj1917.00021962000900080002x

19. The composition of grain sorghum kernels

Author:
Le Clerc, J.A.; Bailey, L.H.
Source:
Agronomy journal 1917 v.9 no.1 pp. 1-16
ISSN:
0002-1962
Subject:
Sorghum (Poaceae); seeds; agronomic traits; crop yield; nutritive value; protein content; ash content; chemical constituents of plants; breads; Texas
Abstract:
... The minimum and maximum results obtained and the average composition found in analyses of several hundred samples of grain sorghums grown at Amarillo, Tex., from 1908 to 1912, are given. The results have been arranged in tabular form so as to bring out the correlations between the percentage of protein and the weight per 1,000 kernels; and also to show how the composition of grain varies with (1) ...
DOI:
10.2134/agronj1917.00021962000900010001x

20. A new wheat for Kansas

Author:
Jardine, W.M.
Source:
Agronomy journal 1917 v.9 no.6 pp. 257-266
ISSN:
0002-1962
Subject:
wheat; agronomic traits; crop yield; high-yielding varieties; Triticum; Kansas
DOI:
10.2134/agronj1917.00021962000900060001x

21. Hay crops. F. Sweet clover as a hay crop

Author:
Walster, H.L.
Source:
Agronomy journal 1924 v.16 no.3 pp. 182-186
ISSN:
0002-1962
Subject:
Melilotus officinalis; agronomic traits; crop management; digestibility; palatability; ruminants
DOI:
10.2134/agronj1924.00021962001600030007x

22. Hybrid vigor in soybeans

Author:
Wentz, J.B.; Stewart, R.T.
Source:
Agronomy journal 1924 v.16 no.8 pp. 534-540
ISSN:
0002-1962
Subject:
Glycine max; hybrids; heterosis; parentage; agronomic traits
DOI:
10.2134/agronj1924.00021962001600080008x

23. The effects of fertilizers on the yield and the ear characters of corn

Author:
Wolfe, T.K.
Source:
Agronomy journal 1924 v.16 no.8 pp. 551-552
ISSN:
0002-1962
Subject:
Zea mays; fertilizer application; agronomic traits; crop yield; seeds
DOI:
10.2134/agronj1924.00021962001600080010x

24. Interpreting correlation coefficients

Author:
Richey, F.D.
Source:
Agronomy journal 1929 v.21 no.2 pp. 232-234
ISSN:
0002-1962
Subject:
crop production; agronomic traits; equations
DOI:
10.2134/agronj1929.00021962002100020012x

25. The relation of seminal roots in corn to yield and various seed, ear, and plant characters

Author:
Mangelsdorf, P.C.; Goodsell, S.F.
Source:
Agronomy journal 1929 v.21 no.1 pp. 52-68
ISSN:
0002-1962
Subject:
Zea mays; crop yield; agronomic traits
Abstract:
... 1. The number of seminal roots varies significantly with position of the seed on the ear and with differences in temperature and moisture during germination. 2. Each ear has relatively the same average number of seminal roots under different conditions. 3. The average number of seminal roots per ear is constant within the limits of sampling error under uniform conditions of germination. Samples of ...
DOI:
10.2134/agronj1929.00021962002100010006x

26. Hybrid vigor in oats

Author:
Coffman, F.A.; Wiebe, G.A.
Source:
Agronomy journal 1930 v.22 no.10 pp. 848-860
ISSN:
0002-1962
Subject:
hybrids; vigor; agronomic traits; Avena sativa
Abstract:
... In a study of hybrid vigor in F1 oat plants as compared with plants of their parental strains it was observed that: 1. Plant height often was increased to some extent by hybridization. 2. Panicle length was increased in some, but not in all, hybrids. The increase usually was not great. 3. The number of tillers often was decreased in the hybrid plants. 4. Total plant weight was greater in some cros ...
DOI:
10.2134/agronj1930.00021962002200100005x

27. Crop plants under cultivation in Japan

Author:
Akemine, M.
Source:
Agronomy journal 1931 v.23 no.3 pp. 161-174
ISSN:
0002-1962
Subject:
crops; crop production; agronomic traits; Japan
DOI:
10.2134/agronj1931.00021962002300030001x

28. The adaptation of corn to upland and bottom land soils

Author:
Goodding, T.H.; Kiesselbach, T.A.
Source:
Agronomy journal 1931 v.23 no.11 pp. 928-937
ISSN:
0002-1962
Subject:
Zea mays; crop yield; bottomland soils; upland soils; agronomic traits; Nebraska
Abstract:
... Tests made during a 7-year period fail to disclose a difference in seed value of open-pollinated corn native to upland and bottom land soils within the same localities in eastern Nebraska. It is considered that the two types of conditions serving as seed sources differed chiefly with respect to soil fertility. In years of favorable rainfall the bottom lands under consideration have a potential yie ...
DOI:
10.2134/agronj1931.00021962002300110007x

29. Differences between barnyard grasses and Japanese millet

Author:
Bressman, E.N.; Fry, E.S.
Source:
Agronomy journal 1932 v.24 no.2 pp. 123-128
ISSN:
0002-1962
Subject:
interspecific variation; seedling growth; Echinochloa crus-galli; agronomic traits; Echinochloa frumentacea; Oregon
Abstract:
... The difficulty in distinguishing barnyard (Echinochloa crusgalli Beauv.), commonly called water grass in the West, from the true Japanese millet (E. frumentacea Link), except at the time of maturity of the plants, has led to the substitution of barnyard grass seed for Japanese millet. The names barnyard grass and water grass are used interchangeably in this paper. It is well known that Japanese mi ...
DOI:
10.2134/agronj1932.00021962002400020004x

30. Methods of testing inbred lines of maize in crossbred combinations

Author:
Jenkins, M.T.; Brunson, A.M.
Source:
Agronomy journal 1932 v.24 no.7 pp. 523-530
ISSN:
0002-1962
Subject:
Zea mays; agronomic traits; inbred lines; crossbreds; yields; selection criteria; cross pollination
Abstract:
... Coefficients of correlation for a number of different characters were determined between the mean performance of the single crosses of inbred lines of corn and the performance of these lines in crosses with a commercial variety or with a varietal mixture. Coefficients of correlation also were determined between the mean performance of the crosses of several inbred lines used in two series of cross ...
DOI:
10.2134/agronj1932.00021962002400070004x

31. Registration of improved wheat varieties. VII

Author:
Clark, J.A.
Source:
Agronomy journal 1932 v.24 no.12 pp. 975-978
ISSN:
0002-1962
Subject:
Triticum aestivum; crop yield; winter hardiness; disease resistance; agronomic traits; cultivars; Michigan; Montana; Kansas
Abstract:
... Varieties approved for registration this year are as follows: Varietal Name Registration No. Baldrock 271 Yogo 272 Quivera 273 ...
DOI:
10.2134/agronj1932.00021962002400120005x

32. Oat varieties highly resistant to crown rust and their probable agronomic value

Author:
Stanton, T.R.; Murphy, H.C.
Source:
Agronomy journal 1933 v.25 no.10 pp. 674-683
ISSN:
0002-1962
Subject:
introduced plants; terminology; Avena sativa; variety trials; Puccinia coronata; disease resistance; provenance; taxonomy; varieties; strains; color; crop yield; agronomic traits
Abstract:
... Information on the origin, introduction, nomenclature, and probable agronomic value of certain new varieties of oats resistant to or nearly immune from crown rust is reported. Bond (C.I. No. 2733), a new hybrid variety from Australia, is outstanding from the standpoint of resistance to crown rust in combination with desirable agronomic characters. Kareela (C.I. No. 2774) was originated in Australi ...
DOI:
10.2134/agronj1933.00021962002500100004x

33. Furrow versus surface planting winter wheat

Author:
Kiesselbach, T.A.; Lyness, W.E.
Source:
Agronomy journal 1934 v.26 no.4 pp. 289-293
ISSN:
0002-1962
Subject:
Triticum aestivum; sowing; row spacing; crop yield; agronomic traits; Nebraska
Abstract:
... An analysis of the data reveals no striking differences in plant development that cannot be largely accounted for by seeding rate per acre or per foot of row. If furrow and surface planting with similar rate and row spacing are compared, the individual plant development of both is very similar. An increase in seeding rate with both types of drills resulted in an increase in number of plants mature ...
DOI:
10.2134/agronj1934.00021962002600040005x

34. Methods of estimating the performance of double crosses in corn

Author:
Jenkins, M.T.
Source:
Agronomy journal 1934 v.26 no.3 pp. 199-204
ISSN:
0002-1962
Subject:
crossing; Zea mays; inbred lines; varieties; crop yield; methodology; agronomic traits; crossbreds; Iowa
Abstract:
... The actual performance of 42 double crosses was compared with the estimates of their performance obtained from information on the single crosses among their parental lines and on the inbred-variety crosses of the parental lines. The data indicate that the information obtained from comparisons of inbred-variety crosses may be utilized to advantage in estimating the performance of double crosses amo ...
DOI:
10.2134/agronj1934.00021962002600030004x

35. A comparison of the surface, furrow, and listed methods of planting corn

Author:
Jenkins, M.T.
Source:
Agronomy journal 1934 v.26 no.9 pp. 734-737
ISSN:
0002-1962
Subject:
Zea mays; crop yield; sowing; agronomic traits; Iowa
Abstract:
... The surface, furrow, and listed methods of corn planting were compared for a 5-year period. Yields from the three methods of planting were not significantly different, but considerable extra care was required to obtain comparable stands in the listed plantings. Data are reported on the influence of method of planting upon a number of characters of the corn plant. ...
DOI:
10.2134/agronj1934.00021962002600090004x

36. Cotton varieties recognized as standard commercial varieties

Author:
Brown, H.B.
Source:
Agronomy journal 1936 v.28 no.1 pp. 69-79
ISSN:
0002-1962
Subject:
lint cotton; Gossypium hirsutum; drought tolerance; early development; agronomic traits; disease resistance; high-yielding varieties; fiber quality; bolls; Oklahoma; Texas; South Carolina; Alabama; Georgia; Mississippi
Abstract:
... Below are brief descriptions of cotton varieties recognized by the American Society of Agronomy and the Agronomists of the Association of Southern Agricultural Workers as standard commercial varieties. ...
DOI:
10.2134/agronj1936.00021962002800010010x

37. Row competition and its relation to cotton varieties of unlike plant growth

Author:
Hancock, N.I.
Source:
Agronomy journal 1936 v.28 no.11 pp. 948-957
ISSN:
0002-1962
Subject:
Gossypium hirsutum; crop yield; plant competition; varieties; agronomic traits; rain; air temperature; planting date; harvest date; row spacing; statistical analysis; plant development; Tennessee
Abstract:
... 1. Measurements are given to show that the California Acala and Delfos 6102 varieties used in this experiment differ materially in their morphological characters. 2. An attempt was made to induce row competition by planting these varieties in different combinations of single-row plats so that full and partly full expressions of their plant growth might be reflected upon each other. 3. The experime ...
DOI:
10.2134/agronj1936.00021962002800110009x

38. The combining ability of inbred lines of golden bantam sweet corn

Author:
Johnson, L.J.; Hayes, H.K.
Source:
Agronomy journal 1936 v.28 no.3 pp. 246-252
ISSN:
0002-1962
Subject:
topcrossing; Zea mays; agronomic traits; crop yield; inbred lines; Minnesota
Abstract:
... In a study of the combining ability of inbred lines of Golden Bantam sweet corn made at University Farm, St. Paul, Minn., 39 inbred lines were top crossed to the parental variety, to an unrelated variety of Del Maiz sweet corn, and to a Del Maiz inbred line. The inbred lines were also grown and measurements were made of several of their characters, including yield. Eleven of the inbred lines used ...
DOI:
10.2134/agronj1936.00021962002800030008x

39. Determining the species composition of swards

Author:
Leasure, J.K.
Source:
Agronomy journal 1949 v.41 no.5 pp. 204-206
ISSN:
0002-1962
Subject:
botanical composition; agronomic traits
Abstract:
... The results indicate the while the point quadrat method has no apparent bias, the value determined for a single sample area may be expected to vary as much as 10% from the true percentage composition; that is, for an estimate of 40% grass, the true percentage may be reasonably assumed to lie between 50% and 30%. The average of visual estimates by three persons, however, seems also to be accurate w ...
DOI:
10.2134/agronj1949.00021962004100050008x

40. "Mayaguez Hairless"--a mutant of tropical kudzu

Author:
Warmke, H.E.
Source:
Agronomy journal 1950 v.42 no.11 pp. 571-573
ISSN:
0002-1962
Subject:
Pueraria phaseoloides; trichomes; crossing; agronomic traits; mutants; pollination; Puerto Rico
DOI:
10.2134/agronj1950.00021962004200110010x

41. Apomictic interspecific hybrids are promising for rubber production from guayule

Author:
Tysdal, H.M.
Source:
Agronomy journal 1950 v.42 no.7 pp. 351-355
ISSN:
0002-1962
Subject:
rubber; hybrids; interspecific hybridization; genetic improvement; Parthenium argentatum; agronomic traits; apomixis; crop yield
Abstract:
... While great progress has been made in the quality of synthetic rubber, it is still necessary to have natural rubber for a great many uses. Several different species of plants which can be grown in continental United States produce rubber, but, at the present time, one of the most promising is guayule (Parthenium argentatum). Guayule reproduces both by amphimixis, 36 chromosomes, and apomixis, 54 c ...
DOI:
10.2134/agronj1950.00021962004200070008x

42. Barley varieties registered. XI

Author:
Hayes, H.K.
Source:
Agronomy journal 1950 v.42 no.1 pp. 54
ISSN:
0002-1962
Subject:
Hordeum vulgare; cultivars; crop yield; agronomic traits
DOI:
10.2134/agronj1950.00021962004200010010x

43. Chromosome numbers, morphology, and fertility in poa pratensis L. from southeastern Norway

Author:
Nissen, O.
Source:
Agronomy journal 1950 v.42 no.3 pp. 136-144
ISSN:
0002-1962
Subject:
Poa pratensis; strain differences; chromosome number; plant morphology; agronomic traits; apomixis; genetic correlation; Norway
Abstract:
... Chromosome numbers, morphology, and fertility were studied in 24 strains of Poa pratensis L., collected on pastures in southeastern Norway, and selected as valuable pasture types. It is concluded that the normal mode of reproduction is apomixis. Nearly all the strains have aneuploid numbers, varying from 53 to 92. The frequency of plants with aberrant chromosome numbers is approximately one-tenth ...
DOI:
10.2134/agronj1950.00021962004200030004x

44. Disease reaction and agronomic qualities of oats selections from a Columbia X Victoria-Richland cross

Author:
Poehlman, J.M.; Kingsolver, C.H.
Source:
Agronomy journal 1950 v.42 no.10 pp. 498-502
ISSN:
0002-1962
Subject:
rust diseases; cultivars; blight; Puccinia coronata; disease prevalence; agronomic traits; crop yield; plant pathogenic fungi; Bipolaris victoriae; Avena sativa; disease resistance; Missouri
Abstract:
... Twenty-six oat selections originating from a single F5 plant from a Columbia X Victoria-Richland cross were studied for reaction to Helminthosporium victoriae and Puccinia coronata avenae. In greenhouse tests, 12 strains were resistant, 6 were segregating, and 8 were susceptible to Victoria blight. Plants resistant to Victoria blight were intermediate in reaction to race 1 and race 45 of crown rus ...
DOI:
10.2134/agronj1950.00021962004200100008x

45. Fertility relationships and meiosis of interspecific hybrids in melilotus

Author:
Webster, G.T.
Source:
Agronomy journal 1950 v.42 no.7 pp. 315-322
ISSN:
0002-1962
Subject:
statistics; Melilotus; hybrids; interspecific hybridization; agronomic traits; pollen; meiosis; heritability
Abstract:
... Interspecific hybrids involving seven species of Melilotus are reported. All hybrids were characterized by varying degrees of pollen abortion and a reduction in self-fertility. Pollen condition and self-fertility estimates were determined in the F2 generation of crosses among three of the species, M. alba, M. polonica, and M. suaveolens, and the F3 generation of the cross M. polonica X M. suaveole ...
DOI:
10.2134/agronj1950.00021962004200070001x

46. Germination and seedling responses of inbred lines of corn to 2,4-dichlorophenoxyacetic acid

Author:
Hansen, J.R.; Buchholtz, K.P.
Source:
Agronomy journal 1950 v.42 no.9 pp. 452-455
ISSN:
0002-1962
Subject:
Zea mays; inbred lines; 2,4-D; seed germination; seedling emergence; seedling growth; agronomic traits
Abstract:
... The responses of 59 inbred lines of corn to 2,4-D were studied during germination and in the seedling stage. In field experiments the various inbreds were subjected to a pre-emergence spray treatment at application rates of 0, 2, 4, and 8 pounds of 2,4-D acid per acre in the form of its sodium salt. Seeds of the lines were germinated in distilled water and water containing 5 and 20 ppm 2,4-D. The ...
DOI:
10.2134/agronj1950.00021962004200090008x

47. High rubber yielding selections from a natural population of guayule

Author:
Johnson, B.L.
Source:
Agronomy journal 1950 v.42 no.7 pp. 345-350
ISSN:
0002-1962
Subject:
statistics; rubber; Parthenium argentatum; agronomic traits; apomixis; high-yielding varieties; genetic variance
Abstract:
... Guayule accession 4265 which represents a mass seed collection from five plants occurring in a native stand in Durango, Mexico, was compared with variety 593 (the best of the commercial varieties) on nine characters. Their means for date of first bloom in 1945 were not different. In height and spread of 17-month old and 3-year old plants, and in rubber content and resin content of 2-year and 3-yea ...
DOI:
10.2134/agronj1950.00021962004200070007x

48. Internode pattern as a descriptive character in alfalfa

Author:
Jones, F.R.
Source:
Agronomy journal 1950 v.42 no.9 pp. 432-433
ISSN:
0002-1962
Subject:
Medicago sativa; internodes; length; agronomic traits; plant development
Abstract:
... Internode pattern in alfalfa refers to diagrammatic representations of measurements of internodes of stems and to the position of branches and inflorescences at nodes. Plants are found to differ widely in certain characters of internode pattern when grown in the field protected from sucking insects, and these differences appear to be usable in distinguishing plants differing in habit of growth. Wh ...
DOI:
10.2134/agronj1950.00021962004200090003x

49. Natural and controlled crossing in safflower, Carthamus tinctorius L

Author:
Claassen, C.E.
Source:
Agronomy journal 1950 v.42 no.8 pp. 381-384
ISSN:
0002-1962
Subject:
Carthamus tinctorius; crossing; methodology; flowering; agronomic traits; seed set; pollination; pollinators; Nebraska
Abstract:
... Natural crossing in individual safflower plants was found to vary from 0 to 100%. Although there was extreme variability among plants in extent of nature crossing, most plants were found to be outcrossed from 5 to 40%. Some inbred lines that were selected for high yield and high oil average less than 5% in outcrossing. Insects account for most of the cross pollination the occurs in safflower. Thos ...
DOI:
10.2134/agronj1950.00021962004200080002x

50. Registration of improved cotton varieties. IV

Author:
O'Kelly, J.F.
Source:
Agronomy journal 1950 v.42 no.1 pp. 53
ISSN:
0002-1962
Subject:
Gossypium hirsutum; cultivars; agronomic traits
DOI:
10.2134/agronj1950.00021962004200010009x