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Germplasm Overview
Name | Dwarf GP |
Alias | GP-967 [view all 2] |
GRIN ID | PI 668119
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Type | Breeding Germplasm |
Species | Gossypium hirsutum |
In Collection | [view all] |
Description | The Dwarf GP is a four-parent population that was designed to introduce dwarfing genes into non-dwarf backgrounds. The Dwarf GP had short observed plant heights and a narrow range of values for most traits. Dwarf GP had a low lint index (4.85 g; range = 3.15-6.89 g), small boll size (3.56 g; range = 1.84-4.88 g), short fiber length (24.53 mm; range = 22.61-26.67 mm), and low micronaire (3.94 units; range = 2.5-5.4 units). Lint yield averaged 474 kg ha-1 (range = 178-871 kg ha-1), seed index averaged 9.91 g (range = 6.28-12.92 g), fiber strength averaged 311.9 kN m kg-1 (range = 217.7-399.1 kN m kg-1), and elongation averaged 6.62% (range = 5.1-7.6%). A negative relationship was detected between fiber upper half mean length and lint index (r = -0.245) while a positive relationship was seen between fiber strength and lint index (r = 0.363). Positive correlations were also observed between strength and micronaire (r = 0.282). No significant correlation was detected between lint yield and fiber strength or fiber length. Seed index was positively correlated with boll size (r = 0.490) and fiber strength (r = 0.387). Elongation was positively correlated with lint index (r = 0.563), boll size (r = 0.425), lint yield (r = 0.582), micronaire (r = 0.574), and fiber strength (r = 0.627). |
Origin Country | United States |
Origin Detail | United States, Texas |
Pedigree | Lubbock Dwarf was crossed with Texas Marker-1, DORS, and Stoneville Okra Leaf. Each cross was advanced without selection. In the F3, pollen was collected from each cross and bulked to pollinate each plant. A male-sterile line was introduced in the F4 generation. A minimum of 100 bolls were harvested, seeds were bulked, and a random sample was planted the next generation. No artificial selection was applied during population development. The GP was advanced for 9 total cycles of random mating. |
Maternal Parent | N/A |
Paternal Parent | N/A |
Maternal Parent of | N/A |
Paternal Parent of | N/A |
Phenotypic Data | N/A |
SSR Genotype Data | [view all 104] |
SNP Genotype Data | N/A |
Map | N/A |
DNA Library | N/A |
Sequence | N/A |
Comments | N/A |
Reference | Hinze L, Kohel RJ, Campbell T, Percy RG. Registration of Four Diverse Random‐Mated Cotton Germplasm Populations. Journal of Plant Registrations. 2014 Jan 1, 8(1):57-62. |
Cross References
External references for this accession
In Collection
In Collection
Name |
ID used in Collection |
External Database |
NPGS Crop Science Registration (USA) | GP-967 | | GRIN NPGS Cotton Collection (USA) | PI 668119 | GRIN: |
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