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GrainGenes Trait Study Report: Spikes per area, Shah99

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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