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GrainGenes Trait Study Report: Spikes per area, Shah99

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Trait Study	Spikes per area, Shah99
Reference	Shah MM et al. (1999) Molecular mapping of loci for agronomic traits on chromosome 3A of bread wheat. Crop Science 39:1728-1732.
Protocol	Spikes per square meter, calculated by dividing the grain yield of the plot by the number of kernels per spike and the mean kernel weight. The RICL-3A population and the parents, CNN and CNN(WI3A), were evaluated in four to eight diverse Nebraska environments during 1994 - 1996.
Parental Description	CHEYENNE 331 Cheyenne-Wichita Disomic Substitution 3A WI (3A CNN) 326
Map Data	3A, CNN x WI
Population Size	50
Population Type	recombinant inbred chromosome lines
QTL Analysis Method	multiple regression
Markers Tested	14
QTLs Found	1
Phenotypic R2	0.182
QTL	QSpsm.sha-3A
Data Curator	Carollo, Victoria 01.03

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