| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
|
|
|
|||||||
|
|||||||||
a Dep. of Agronomy and Horticulture, New Mexico State Univ., Las Cruces, NM 88003-8003 USA
b Jr., USDA-ARS Crop Sci. Lab., P.O. Box 5367, Mississippi State, MS 39762 USA
c Dep. Crop, Soil, and Environmental Sci., Univ. of Arkansas, Fayetteville, AR 72701 USA
rcantrel{at}nmsu.edu
Effective use of converted day-neutral Gossypium hirsutum L. race stocks in cotton genetic improvement programs depends on the extent of genetic variation for desirable alleles and the accurate characterization of the variability within and among germplasm accessions in the collection. This study was conducted to survey the molecular variation in the converted race stock collection by using simple sequence repeat (SSR) DNA markers and to determine the genetic distance of each race stock from a typical G. hirsutum cultigen. The molecular marker data will also provide a measure of the degree to which the recurrent photoperiodic parent has been recovered during backcross conversion to day-neutral stocks. Fifty-six flourescently labeled SSR primer pairs arranged in multiplex bins were used to genotype 97 day-neutral BC4F4 race stock accessions. The majority of the accessions had genetic distances <0.25 from the G. hirsutum standard TM1. There was strong evidence that the accessions were heterozygous or heterogeneous, so 10 plants were genotyped within the most diverse nine accessions, those with genetic distance from TM1 >0.25. In some families, the primitive photoperiodic parent was recovered, and in others there was extensive linkage drag from the day-neutral donor parent. The recovery of the primitive recurrent parent could be improved by marker-assisted backcrossing with SSR markers reported in this experiment. Careful genotyping with SSR markers prior to introgression into breeding programs is suggested to ensure maximum genetic diversity and integrity of the exotic race-stock donor germplasm.
Abbreviations: PCR, polymerase chain reaction • QTL, quantitative trait loci • SSR, simple sequence repeat
This article has been cited by other articles:
|
|
 |
|
  P. I. Ragsdale and C. W. Smith Germplasm Potential for Trait Improvement in Upland Cotton: Diallel Analysis of Within-Boll Seed Yield Components Crop Sci., May 31, 2007; 47(3): 1013 - 1017. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 I. Y. Abdurakhmonov, F. N. Kushanov, F. Djaniqulov, Z. T. Buriev, A. E. Pepper, N. Fayzieva, G. T. Mavlonov, S. Saha, J. N. Jenkins, and A. Abdukarimov The Role of Induced Mutation in Conversion of Photoperiod Dependence in Cotton J. Hered., May 1, 2007; 98(3): 258 - 266. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
G. Van Becelaere, E. L. Lubbers, A. H. Paterson, and P. W. Chee Pedigree- vs. DNA Marker-Based Genetic Similarity Estimates in Cotton Crop Sci., September 23, 2005; 45(6): 2281 - 2287. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
J. F. Zhang, Y. Lu, H. Adragna, and E. Hughs Genetic Improvement of New Mexico Acala Cotton Germplasm and Their Genetic Diversity Crop Sci., September 23, 2005; 45(6): 2363 - 2373. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
J. Zhang, Y. Lu, R. G. Cantrell, and E. Hughs Molecular Marker Diversity and Field Performance in Commercial Cotton Cultivars Evaluated in the Southwestern USA Crop Sci., June 24, 2005; 45(4): 1483 - 1490. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
M. Ulloa, S. Saha, J. N. Jenkins, W. R. Meredith Jr., J. C. McCarty Jr., and D. M. Stelly Chromosomal Assignment of RFLP Linkage Groups Harboring Important QTLs on an Intraspecific Cotton (Gossypium hirsutum L.) Joinmap J. Hered., March 1, 2005; 96(2): 132 - 144. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
H. Basal, P. Bebeli, C. W. Smith, and P. Thaxton Root Growth Parameters of Converted Race Stocks of Upland Cotton and Two BC2F2 Populations Crop Sci., November 1, 2003; 43(6): 1983 - 1988. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
S. A. Mohammadi and B. M. Prasanna Analysis of Genetic Diversity in Crop Plants--Salient Statistical Tools and Considerations Crop Sci., July 1, 2003; 43(4): 1235 - 1248. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
O. A. Gutierrez, S. Basu, S. Saha, J. N. Jenkins, D. B. Shoemaker, C. L. Cheatham, and J. C. McCarty Jr. Genetic Distance among Selected Cotton Genotypes and Its Relationship with F2 Performance Crop Sci., November 1, 2002; 42(6): 1841 - 1847. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
M. Karaca, S. Saha, J. N. Jenkins, A. Zipf, R. Kohel, and D. M. Stelly Simple Sequence Repeat (SSR) Markers Linked to the Ligon Lintless (Li1) Mutant in Cotton J. Hered., May 1, 2002; 93(3): 221 - 224. [Abstract] [Full Text] [PDF]
|
|
| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
| The SCI Journals | Agronomy Journal | Vadose Zone Journal | |||
| Journal of Natural Resources and Life Sciences Education |
Soil Science Society of America Journal | ||||
| Journal of Plant Registrations | Journal of Environmental Quality |
The Plant Genome | |||
