HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by McCarty, J. C. Articles by Zhu, J. Search for Related Content PubMed Articles by McCarty, J. C., Jr. Articles by Zhu, J. Agricola Articles by McCarty, J. C. Articles by Zhu, J.

Introgression of Day-Neutral Genes in Primitive Cotton Accessions: I. Genetic Variances and Correlations

USDA-ARS, Crop Sci. Res. Lab., P.O. Box 5367, Mississippi State, MS 39762

J. Zhu

Agronomy Dep., Zhejiang Agriculture Univ., Hangzhou 310029, China

^* Corresponding author (jcm{at}ra.msstate.edu).

Many of the primitive accessions of cotton, Gossypium hirsutum L., are photoperiodic and not readily useable by plant breeders. Five generations of day-neutral progenies(F₅, BC₁F₅, BC₂F₅B, BC₃F₅, and BC₄F₅) derived from 16 accessions crossed to ‘Deltapine 16’ were evaluatedf or agronomic and fiber traits for 3 yr. Genetic variance components for each trait andc orrelation among these traits were studied. Variation of accessions generation was highly significant for all traits studied. Main effects for accessions and generations were significant; however, the magnitude was relatively small compared witht he interaction variation. The breeding merit of day-neutral progenies should be evaluated according to specific accessions. Lint yield had significant but small positive phenotypic correlation with lint percentage, boil size, and 2.5% span length, but not with the other traits studied. Highly significant positive correlations were found for effects of accession, generation, and accession x generation between lint yield and lint percentage. With the use of multiple backcrosses to introgress day-neutral genes in primitive cotton accessions large interaction can be expected between accession and backcross generation; therefore, specific generations should be evaluated for the trait of interest.

Received for publication September 16, 1996.

This article has been cited by other articles:

				J. C. McCarty, J. Wu, and J. N. Jenkins Use of Primitive Derived Cotton Accessions for Agronomic and Fiber Traits Improvement: Variance Components and Genetic Effects Crop Sci., January 22, 2007; 47(1): 100 - 110. [Abstract] [Full Text] [PDF]

				J. C. McCarty, J. N. Jenkins, and J. Wu Primitive Accession Derived Germplasm by Cultivar Crosses as Sources for Cotton Improvement: I. Phenotypic Values and Variance Components Crop Sci., July 1, 2004; 44(4): 1226 - 1230. [Abstract] [Full Text] [PDF]

				J. C. McCarty, J. N. Jenkins, and J. Wu Primitive Accession Derived Germplasm by Cultivar Crosses as Sources for Cotton Improvement: II. Genetic Effects and Genotypic Values Crop Sci., July 1, 2004; 44(4): 1231 - 1235. [Abstract] [Full Text] [PDF]