The objectives were to identify additional genomic regions of QTL for internode length above the uppermost ear, to estimate the magnitude and type of their genetic effects, and to provide information for fine mapping and marker-assisted selection.
The internode length above the uppermost ear (ILAU) is an important influencing factor for canopy architecture in maize.
Internode length in maize, particularly internode length above the uppermost ear (ILAU), is an important index that reflects optimal canopy architecture.
Ten days after pollen shed, five consecutive plants from the middle of each plot were chosen to evaluate the ILAU (ILFir, ILSec, ILThi, ILFor, and ILFif, the first, second, third, fourth, and fifth internode length above the uppermost ear, respectively), and each internode length was defined as the length from node to node.
The length of the liver was measured from uppermost portion of the dome of diaphragm to the inferior tip.
The position consistency of the QTL demonstrated that all internode lengths above the uppermost ear may be affected by one or several of the same QTL.
The total length of the crest from the beak to the uppermost tip of the type specimen is 83.7 cm, its total length is 81.2 cm, and height 70.8 cm.
Positive alleles of 14 QTL were derived from Yu87-1 and contributed to increased internode length values above the uppermost ear.
Eight positive alleles of the 14 QTL were derived from Shen137 and contributed to increased internode lengths above the uppermost ear.
The depth is measured at the middle of the length, from the top of the keel to the top of the deck beam at the side of the uppermost continuous deck.
