Reference "Molecular marker-assisted dissection of genotype X environment interaction for plant"

Reference ID

7912

Title

Molecular marker-assisted dissection of genotype X environment interaction for plant

Source

Crop Science, 1999, vol. 39, pp. 538-544

Authors (5)

Yan-J	Zhu-J
He-C	Benmoussa-M
Wu-P

Abstract

A doubled haploid (DH) population of 123 lines from IR64/Azucena was used to
analyze the genotype × environment (GE) interaction for eight plant type
traits in rice (Oryza sativa L.). The total genetic effects were partitioned
into genetic main effects and GE interaction effects. These two kinds of
predicted effects were used in mapping quantitative trait loci (QTLs). Four to
nine QTLs affecting different plant type traits were detected. Results indicated
that all common QTLs detected in both environments were controlled by genetic
main effects and some also by GE interaction effects. Some genomic regions
identified significant QTL in only one environment; some also showed genetic
main effects. Those QTLs with genetic main effects could be used in marker-
assisted selection across environments. For some other map regions, QTLs were
controlled by only GE interaction effects without genetic main effects. Those
QTLs could be included in marker-assisted selection only for specific
environments. In most cases, the pairs of traits with a high genetic correlation
shared more common QTL regions than those pairs of traits with a lower genetic
correlation.