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Upland cotton (Gossypium hirsutum L.) hybrids display commercially useful levels of heterosis for lint yield. Cotton lint yield is primarily a multiplicative product of boll number and lint per boll, both of which can be further dissected into sub-components. Relationships among the yield components are complex where they further interact with the environment. To identify different yield components...
The primitive, upland cotton landrace collection represents one of the untapped genetic resources in cotton breeding programs. Efforts to utilize these resources have been slow, but the development of day-neutral converted germplasm lines offers tremendous potential for broadening the genetic base in upland cotton. Using topcross hybrids involving elite germplasm from the unique Pee Dee germplasm...
Verticillium wilt (VW), caused by Verticillium dahliae Kleb, is one of the most destructive diseases in cotton (Gossypium spp.). The most efficient and cost-effective method of controlling the disease is the use of resistant cotton cultivars. Most commercial cultivars and elite breeding lines are developed under non-VW conditions and their responses to the disease are currently unknown. This study...
There is a renewed interest in research and use of glandless (free of gossypol) Upland cotton (Gossypium hirsutum L.) that can produce edible seeds for human food and animal feed. However, there was a lack of information on yield potential of existing glandless germplasm since intermittent breeding activities for glandless cotton were stopped in the U.S. before 2000. The objectives of the present...
EST–SSRs of Gossypium barbadense are mainly developed using traditional Sanger sequencing. However, due to the high cost and low throughput of Sanger sequencing, it is necessary to use high throughput sequencing technology for the development of more ESTs to more effectively analyze the structure and function of this species. In this study, a G. barbadense acc. 3–79 unnormalized fiber cDNA library...
Relationships between lint yield and within-boll yield components are important for genetic improvement of lint yield in cotton (Gossypium hirsutum L.) cultivars. F2 plants derived from crosses between germplasm lines and high yielding cultivars were analyzed to determine the contributions of within-boll yield components to lint yield and to select parents with desirable combining ability for multiple...
Gossypium barbadense L is an important genetic resource to improve fiber quality of Gossypium hirsutum L., but breeders have generally encountered difficulties in introgression following whole genome crosses primarily due to genomic incompatibility, complex genetic basis and low efficiency of phenotypic evaluation and selection on fiber quality. Chromosome segment substitution lines (CSILs) are a...
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