Nomenclature of QTLs

QTLs were named according to the rules of International Rules of Genetic Nomenclature³.

All QTLs were named as follows: “Q” stands for “QTL,” followed by the letter Q are the abbreviations of the corresponding kernel traits (KL, KW, KT, TKW, LWR, KS, and FFD represent kernel length, kernel width, kernel thickness, thousand-kernel weight, kernel length–width ratio, kernel size, and factor from density, respectively); “sicau” is the abbreviation of “Sichuan Agricultural University,” and “2SY” stands for the mapping populations name used in this study; the last is the wheat chromosome on which the corresponding QTL is distributed; if more than one QTL for a trait was distributed on the same chromosome, a serial number, viz.1, 2, 3, etc., was used to describe their order after the chromosome name, from the short arm to the long arm.