Race GP

Name	Race GP
Alias	GP-970 [view all 2]
GRIN ID	PI 668122
Type	Breeding Germplasm
Species	Gossypium hirsutum
In Collection	[view all]
Description	The Race GP is a complex population developed from 42 parents with high fiber strength and long fiber length among the cotton race stocks that are non-photoperiodic at College Station, TX. The cotton race stocks are a group of primitive accessions that were collected from the Mesoamerican center of morphological diversity of Upland cotton. These accessions are the original gene pool from which selections were made to develop modern cotton cultivars. This population had long fibers (26.57 mm; range = 22.86-30.48 mm) and a large range of lint yield values (580.78 kg ha-1; range = 201-1199 kg ha-1). For lint yield, values in the upper tail of the distribution included transgressive segregates that would suggest selection would be effective to improve lint yield in this population. Micronaire averaged 4.32 units (range = 2.8-6.0 units), fiber strength averaged 313.1 kN m kg-1 (range = 226.5-410.9 kN m kg-1), and elongation averaged 6.68% (range = 5.4-7.9%). Results of agronomic trait measurement showed that lint index averaged 5.31 g (range = 3.33-7.44 g), seed index averaged 10.92 g (range = 7.54-14.4 g), and boll size averaged 4.04 g (range = 2.04-5.98 g). Positive correlations were observed between strength and micronaire (r = 0.435). No correlation was detected between lint yield and fiber strength or fiber length. Seed index was positively correlated with fiber strength (r = 0.332). Elongation was positively correlated with lint index (r = 0.509), seed index (r = 0.372), boll size (r = 0.496), lint yield (r = 0.572), micronaire (r = 0.640), and fiber strength (r = 0.407) but negatively correlated with upper half mean fiber length (r = -0.361).
Origin Country	United States
Origin Detail	United States, Texas
Pedigree	42 parents were hybridized: PIs 154022, 549148, 154033, 154045, 154048, 154049, 154050, 549149, 154052, 549150, 154054, 154088, 154090, 154096, 154099, 154100, 154101, 154103, 153966, 163654, 163602, 163742, 165322, 165368, 165369, 163693, 165341, 165244, 162895, 529808, 529809, 529810, 529811, 529812, 529813, 529814, 529815, 529816, 154078, 154104, 158562, and 265146. Nine cycles of random mating were conducted; a male sterile was introduced in the F4 generation to facilitate crossing.
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.

Synonym
GP-970
PI 668122

Year	Publication
2013	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.

Database	Accession
GRIN_Regist	GP-970
GRIN	PI 668122