U.S. flag

An official website of the United States government

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Https

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

PubAg

Main content area

You searched for: Journal name Crop science Remove constraint Journal name: Crop science Publication year rev 8003-1997 Remove constraint Publication year rev: 8003-1997 Source 1997 v.37 no.6 Remove constraint Source: 1997 v.37 no.6
Start Over

Search

70  Search Results

« Previous | 1 - 20 of 70 |
Number of results to display per page

Search Results

1. Agronomic Performance of Related Durum Wheat (Triticum turgidum L.) Stocks Possessing the Chromosome Substitution T1BL.1RS

Author:
R. L. Villareal; O. Bañuelos; A. Mujeeb-Kazi
Source:
Crop science 1997 v.37 no.6 pp. 1735-1740
ISSN:
0011-183X
Subject:
germplasm; Triticum turgidum; filling period; backcrossing; inflorescences; seeds; irrigation; chromosome substitution; water stress; Triticum aestivum; harvest index; homozygosity; biomass; Mexico
Abstract:
... Comparisons of bread wheat (Triticum aestivum L.) germplasms provided evidence that the T1BL.1RS chromosome substitution enhances agronomic performance and, particularly, grain yield. There are no known reports of the effect of this translocation in durum wheat (Triticum turgidum L.), however. The objective of this study was to determine the effect of the T1BL.1RS chromosome on grain yield, yield ...
DOI:
10.2135/cropsci1997.0011183X003700060010x

2. Agronomic and Grain Quality Evaluations of Triticum aestivum × Aegilops tauschii Backcross Populations

Author:
J. P. Murphy; C. A. Griffey; P. L. Finney; S. Leath
Source:
Crop science 1997 v.37 no.6 pp. 1960-1965
ISSN:
0011-183X
Subject:
backcrossing; crop quality; alleles; intergeneric hybridization; height; agronomic traits; crop yield; baking quality; Triticum aestivum; Aegilops; protein content; selection criteria; North Carolina; Virginia
Abstract:
... Aegilops tauschii Coss., a diploid progenitor of common wheat, Triticum aestivum L., is a valuable source of pest resistance alleles. However, interspecific populations generated for pest-resistant germplasm development may contain beneficial alleles for other important traits. The objective of this research was to evaluate eight agronomic and grain quality traits in three soft red winter wheat × ...
DOI:
10.2135/cropsci1997.0011183X003700060047x

3. Association of Fiber Quality Parameters and Within-Boll Yield Components in Upland Cotton

Author:
C. Wayne Smith; Gwen G. Coyle
Source:
Crop science 1997 v.37 no.6 pp. 1775-1779
ISSN:
0011-183X
Subject:
lint cotton; Gossypium hirsutum; gene interaction; general combining ability; genotype; yield components; length; fiber quality; Texas
Abstract:
... Lint yield and fiber quality in upland cotton, Gossypium hirsutum L., are interrelated through a series of individual components such as fiber length and the number of fibers produced on each seed. Numerous studies have reported the relationships among various components of yield and yield per unit land area, but none have reported on the relationships among the most basic within-boll yield compon ...
DOI:
10.2135/cropsci1997.0011183X003700060019x

4. Changes in Temperature Sensitivity of Development from Sowing to Flowering in Rice

Author:
Xinyou Yin; Martin J. Kropff; Jan Goudriaan
Source:
Crop science 1997 v.37 no.6 pp. 1787-1794
ISSN:
0011-183X
Subject:
Oryza sativa; air temperature; buds; cultivars; leaves; light; night temperature; sowing date
Abstract:
... To accurately predict the time of flowering, it is essential to determine the effects of environmental factors on crop development at different stages. The objective of this study was to examine the variation in flowering responses to day temperature (TD) and night temperature (TN) during the preflowering period (PFP) in rice (Oryza sativa L.). Three controlled-environment experiments were conduct ...
DOI:
10.2135/cropsci1997.0011183X003700060021x

5. Characterization and Analysis of North American Triticale Genetic Resources

Author:
Bonnie J. Furman; Calvin O. Qualset; Bent Skovmand; John H. Heaton; Harold Corke; Darrell M. Wesenberg
Source:
Crop science 1997 v.37 no.6 pp. 1951-1959
ISSN:
0011-183X
Subject:
inflorescences; seeds; phenotype; trichomes; leaf area; height; plant genetic resources; color; length; triticale; genetic variation; phenotypic variation; width; quantitative traits; Canada; Mexico; California
Abstract:
... A collection of more than 3000 accessions of triticale (× Triticosecale Wittmack), called the North American Triticale Genetic Resources Collection (NATGRC), was assembled from 10 active and inactive breeding programs in the USA, Canada, and Mexico for the purposes of conservation, characterization, evaluation, and documentation. Since triticale has no wild ancestors and hybrid parentage is often ...
DOI:
10.2135/cropsci1997.0011183X003700060046x

6. Chromosome Location of Leaf Rust Resistance Gene Lr43 from Aegilops tauschii in Common Wheat

Author:
Temam Hussien; R. L. Bowden; B. S. Gill; T. S. Cox
Source:
Crop science 1997 v.37 no.6 pp. 1764-1766
ISSN:
0011-183X
Subject:
germplasm; intergeneric hybridization; chromosome mapping; Triticum aestivum; disease resistance; Aegilops; monosomics; Puccinia recondita; introgression
Abstract:
... Wheat leaf rust resistance gene Lr43 was recently transferred from Aegilops tauschii Coss. to common wheat (Triticum aestivum L.) to produce hard red winter wheat germplasm line KS92WGRC16. Monosomic and telocentric analyses were used to determine the chromosomal and chromosome arm location of Lr43. KS92WGRC16 was crossed with each of the seven D-genome monosomic lines. The F₂ families were inocul ...
DOI:
10.2135/cropsci1997.0011183X003700060016x

7. Drought-Resistance Mechanisms of Seven Warm-Season Turfgrasses under Surface Soil Drying: I. Shoot Response

Author:
B. Huang; R. R. Duncan; R. N. Carrow
Source:
Crop science 1997 v.37 no.6 pp. 1858-1863
ISSN:
0011-183X
Subject:
Eremochloa ophiuroides; Cynodon dactylon; Paspalum vaginatum; Zoysia japonica; Zoysia tenuifolia; hybrids; ecotypes; soil water content; canopy; temperature; leaves; chlorophyll; water content; soil depth; roots
Abstract:
... Knowledge of drought response differences in turfgrasses would accelerate the effectiveness in developing water-use-efficient species. The study was designed to evaluate shoot morphological and physiological traits in relation to drought resistance for seven warm-season turfgrasses: bermudagrass [Cynodon dactylon (L.) Pets. ‘Common’], centipedegrass [Eremochloa ophiuroides (Munro) Hackel ‘TifBlair ...
DOI:
10.2135/cropsci1997.0011183X003700060032x

8. Effects of Coating on Seed Imbibition: II. Effect of Coating Rates

Author:
Anne Schneider; Pierre Renualt
Source:
Crop science 1997 v.37 no.6 pp. 1850-1857
ISSN:
0011-183X
Subject:
imbibition; silica; mathematical models; Zea mays; seeds; coatings; volume; surface area; thickness; surfactants; humidity; diffusion; wettability; seed treatment; water uptake; water potential; vapors
Abstract:
... Coatings may slow water uptake by seeds. To analyze this effect, imbibition of coated and non-coated maize (Zea mays L.) seeds was determined in gaseous and liquid phases. One coating material was applied at five different rates. Similar experiments were done with porous silica beads in saturated air. The volume and surface of the seeds and silica beads were either measured or calculated, and the ...
DOI:
10.2135/cropsci1997.0011183X003700060031x

9. Factors Affecting Leaf Area Development in Husk Leaf of Flint Corn

Author:
Hideo Sato; Naoki Sakurai; Sigeyuki Sendo; Hirofumi Saneoke; Hiroyuki Nobuyasu; Kounosuke Fujita
Source:
Crop science 1997 v.37 no.6 pp. 1826-1831
ISSN:
0011-183X
Subject:
Zea mays; corn ears; leaves; stems; leaf area; dry beans; isotope labeling; cytosol; hulls; photosynthesis; sugars; cellulose; chlorophyll; pectins; shoots; weight; roots; cell wall components; hemicellulose; photosynthates; Japan
Abstract:
... Some corn (Zea mays L.) genotypes produce husk leaves (laminae extending from the husk) that on a per unit area basis, contribute more photosynthate to grain production than culm leaves. Furthermore, a high correlation between husk leaf area and dry weight has been observed, but little is known about the changes in cell components during development of husk leaves. A field experiment was conducted ...
DOI:
10.2135/cropsci1997.0011183X003700060027x

10. Heritability of Seed Shape and Seed Size in Soybean

Author:
E. R. Cober; H. D. Voldeng; J. A. Frégeau-Reid
Source:
Crop science 1997 v.37 no.6 pp. 1767-1769
ISSN:
0011-183X
Subject:
crossing; Glycine max; seeds; heritability; germplasm; diameter; shape; Ontario
Abstract:
... Round seeds are desirable for food-type soybean [Glycine max (L.) Merr.] cultivars and an understanding of the heritability of seed shape would benefit the development of these cultivars. The objectives of this study were to estimate heritability of seed shape and seed size by parent-offspring regression, parent-offspring correlation, and realized heritability, and to determine the correlation bet ...
DOI:
10.2135/cropsci1997.0011183X003700060017x

11. Identification of Marker Loci for Seed Dormancy in Rice (Oryza sativa L.)

Author:
J. Wan; T. Nakazaki; K. Kawaura; H. Ikehashi
Source:
Crop science 1997 v.37 no.6 pp. 1759-1763
ISSN:
0011-183X
Subject:
Oryza sativa; seed dormancy; genetic markers; loci; hybrids; screening; isozymes; gene interaction; seed germination; homozygosity; heterozygosity; Japan
Abstract:
... In rice breeding, genes for seed dormancy as well as the markers for each of them are required for incorporation of an adequate seed dormancy into japonica cultivars. To screen genetic loci for seed dormancy in rice (Oryza sativa L.), two kinds of populations were tested: (i) an F₂ population of a hybrid Milyang 23 / Todorokiwase, and (ii) F₁ populations from a three-way cross, in which an indica ...
DOI:
10.2135/cropsci1997.0011183X003700060015x

12. Inheritance of Cadmium Concentration in Five Durum Wheat Crosses

Author:
J. M. Clarke; D. Leisle; G. L. Kopytko
Source:
Crop science 1997 v.37 no.6 pp. 1722-1726
ISSN:
0011-183X
Subject:
crossing; Triticum turgidum; cadmium; heritability; leaves; chemical constituents of plants; grains; phenotype; genotype; inheritance (genetics); Saskatchewan
Abstract:
... High cadmium concentration in cereal grains has been cited as a human health concern. Several reports showed that grain cadmium concentration was higher in durum (Triticinn turgidum L. var. durum) than in common wheat (T. aestivum L.). The objective of this research was to determine the inheritance of observed differences in grain cadmium concentration of durum wheat. This information could be use ...
DOI:
10.2135/cropsci1997.0011183X003700060008x

13. Marker Effects Estimated from Testcrosses of Early and Late Generations of Inbreeding in Maize

Author:
S. R. Eathington; J. W. Dudley; G. K. Rufener
Source:
Crop science 1997 v.37 no.6 pp. 1679-1685
ISSN:
0011-183X
Subject:
crossing; height; plant characteristics; Zea mays; quantitative traits; loci; genetic markers; phenotypic correlation; genetic correlation; crop yield; weight; gene frequency; corn ears; lodging; heritability; Illinois; Iowa
Abstract:
... In maize (Zea mays L.) breeding programs, early generation testing allows the discarding of lines with poor combining ability early in the inbreeding process. Molecular markers can be used to locate quantitative trait loci (QTL) and measure marker effects in early generations. For marker assisted selection to be useful in improving the efficiency of early generation testing, marker effects estimat ...
DOI:
10.2135/cropsci1997.0011183X003700060001x

14. Mitotic and Ultrastructural Changes in Root Meristems of Grass Seedlings Treated with Alaninyl-Alanine

Author:
J. B. Unruh; N. E. Christians; H. T. Horner
Source:
Crop science 1997 v.37 no.6 pp. 1870-1874
ISSN:
0011-183X
Subject:
mechanism of action; seed germination; root tips; mitosis; intercellular spaces; dipeptides; Lolium perenne; alanine; vacuoles; lipids; rooting; root meristems; growth retardation; cell wall components
Abstract:
... Alaninyl-alanine (Ala-Ala), is a biologically active dipeptide that inhibits the rooting of germinating seeds. Previous research revealed that cells of root tips treated with Ala-Ala were void of cellular components, specifically discernible nuclei and mitotic structures, as well as an overall loss of cytoplasmic integrity. Treated root tips had extensive cell wall abnormalities, including uneven ...
DOI:
10.2135/cropsci1997.0011183X003700060034x

15. Nitrate Uptake, Efflux, and In Vivo Reduction by Pima and Acala Cotton Cultivars

Author:
M. Aslam; K. Nielson; R. L. Travis; D. W. Rains
Source:
Crop science 1997 v.37 no.6 pp. 1795-1801
ISSN:
0011-183X
Subject:
Gossypium hirsutum; Gossypium barbadense; nutrient uptake; seedlings; nitrates; cultivars; hydroponics; nutrition-genotype interaction; roots; nitrate reduction; nitrogen content; nitrogen metabolism; nutrient availability
Abstract:
... Nutrient assimilation by seedlings is an early indicator of subsequent plant growth and development. This study was conducted to compare NO⁻₃ assimilation (net uptake, efflux and in vivo reduction) by 8-d-old seedlings of three Pima (S-7, Oro Bianco, Conquistador) (Gossypium barbadense L.) and four Acala (Maxxa, GC-510, Royal, SJ-2) (Gossypium hirstum L.) cotton cultivars. The seedlings were grown ...
DOI:
10.2135/cropsci1997.0011183X003700060022x

16. Number of Seeds per Unit Area in Sunflower Correlates Well with a Photothermal Quotient

Author:
Julio E. Cantagallo; Claudio A. Chimenti; Antonio J. Hall
Source:
Crop science 1997 v.37 no.6 pp. 1780-1786
ISSN:
0011-183X
Subject:
Helianthus annuus; seeds; seed set; air temperature; light intensity; flowering; buds; solar radiation; irrigation; yield components; cultivars; sowing date; artificial shade; Argentina
Abstract:
... Potential yield in several crop species is affected by radiation and temperature when they are grown under unstressed conditions. This issue has been not explored for sunflower (Helianthus annuus L), and the objectives of our experiments were (i) to analyze the dependence of seed number (SN, seeds m⁻²) on the thermal and light conditions during the period from floret initiation to the end of seed- ...
DOI:
10.2135/cropsci1997.0011183X003700060020x

17. Pendimethalin and Corn Gluten Meal Combinations to Control Turf Weeds

Author:
D. S. Gardner; N. E. Christians; B. R. Bingaman
Source:
Crop science 1997 v.37 no.6 pp. 1875-1877
ISSN:
0011-183X
Subject:
Digitaria; Poa pratensis; seed germination; pendimethalin; weed control; water stress; corn gluten meal; application rate; adverse effects
Abstract:
... Concerns over ground water contamination and other environmental issues have prompted research to reduce synthetic herbicide use. Corn (Zea mays L.) gluten meal, a by-product of wet milling, inhibits germination and the establishment of many annual and perennial weed species. Our objective in the field was to investigate crabgrass control (Digitaria spp.) in Kentucky Bluegrass (Poa pratensis L.) t ...
DOI:
10.2135/cropsci1997.0011183X003700060035x

18. Predicting Success of Indica/Japonica Crosses in Rice, Based on a PCR Marker for the S-5n Allele at a Hybrid-Sterility Locus

Author:
Christie E. Williams; Seiji Yanagihara; Susan R. McCouch; David J. Mackill; Pamela C. Ronald
Source:
Crop science 1997 v.37 no.6 pp. 1910-1912
ISSN:
0011-183X
Subject:
crossing; Oryza sativa; hybrids; alleles; germplasm; genetic markers; inflorescences; nucleotide sequences; polymerase chain reaction
Abstract:
... Exploitation of crosses between the japonica and indica subspecies of rice (Oryza sativa L.) is hindered by hybrid sterility. However, germplasm containing the S-5ⁿ wide compatibility allele, derived from tropical japonica (javanica), can be used as an intermediate in the transfer of traits. A PCR-based DNA marker, STS213, was used to identify the fraction of an F₃ population, segregating for S-5ⁿ ...
DOI:
10.2135/cropsci1997.0011183X003700060040x

19. QTL Mapping in Testcrosses of European Flint Lines of Maize: II. Comparison of Different Testers for Forage Quality Traits

Author:
Thomas Lübberstedt; Albrecht E. Melchinger; Dietrich Klein; Heinz Degenhardt; Christian Paul
Source:
Crop science 1997 v.37 no.6 pp. 1913-1922
ISSN:
0011-183X
Subject:
Zea mays; crop quality; in vitro digestibility; loci; organic matter; protein content; dietary fiber; plant characteristics; starch; crossing; height; self-pollination; genotype; inbred lines; chromosome mapping; heritability; metabolizable energy; genetic markers; quantitative traits
Abstract:
... Improving forage quality is a major goal in maize breeding for cooler climates. In this study, we mapped and characterized quantitative trait loci (QTL) affecting testcross (TC) performance of important forage maize quality traits and investigated their consistency across testers. Two elite flint inbred lines were crossed to generale 380 F₂ individuals, 345 of which were genotyped at 89 RFLP marke ...
DOI:
10.2135/cropsci1997.0011183X003700060041x

20. QTL Mapping in Tropical Maize: II. Comparison of Genomic Regions for Resistance to Diatraea spp.

Author:
M. M. Bohn; M. Khairallah; C. Jiang; D. González-de-León; D. A. Hoisington; H. F. Utz; J. A. Deutsch; D. C. Jewell; J. A. Mihm; A. E. Melchinger
Source:
Crop science 1997 v.37 no.6 pp. 1892-1902
ISSN:
0011-183X
Subject:
crossing; Diatraea grandiosella; Diatraea saccharalis; Zea mays; pest resistance; quantitative traits; loci; restriction fragment length polymorphism; leaves; gene interaction; pleiotropy; chromosome mapping; genetic markers; phenotypic correlation; genetic correlation; genetic variance; genotype; linkage (genetics)
Abstract:
... Southwestern corn borer (SWCB), Diatraea grandiosella (Dyar), and the sugar cane borer (SCB), Diatraea saccharalis (Fabricius), are serious insect pests in maize (Zea mays L.) production areas of Central America and the southern USA. We mapped and characterized quantitative trait loci (QTL) affecting resistance to the leaf feeding generation of SWCB(1 SWCB), compared these QTL with those for resis ...
DOI:
10.2135/cropsci1997.0011183X003700060038x