Identification of quantitative trait loci associated with flowering, vegetative traits and photoperiod response in maize (Zea mays L)

Genetic mapping and analysis of traits related to improvement of popcorn

“…Bins 3.05-3.06, a region where a QTL for GDU was detected herein, contains a maize ortholog of the Arabidopsis luminidependens (ld) gene (Nocker et al, 2000). A photoperiod neutral QTL was also detected in the bin 3.05 -3.06 region (Moutiq, 2002) and the lack of response to photoperiod was consistent with the placement of ld in the autonomous (independent of environmental factors or plant internal signals) pathway of the Arabidopsis flowering genetic model (Putterill et al, 2004). This further suggests that maize ld may be associated with the QTL for GDU detected on chromosome 3 and with flowering time in maize.…”

“…In maize exotic germplasm introgression projects (Crossa and Gardner, 1987;Holland and Goodman, 1995;Tarter et al, 2003), selection for adaptation to target environments may result in substantial loss of favorable exotic germplasm alleles if they are at QTL linked to loci contributing to poor adaptation (Tarter et al, 2004), e.g. loci associated with photoperiod response (Moutiq, 2002). Loss of favorable alleles may be minimized by selecting at loci associated with traits of interest.…”

Single-gene resolution of locally adaptive genetic variation in Mexican maize

“…The former shows environmental association with mean temperature and is a candidate in our G × E analysis between ear mass and temperature, precipitation, and elevation, and the latter is a G × E candidate for flowering time and temperature as well as annual precipitation and wet days). Finally, we identify Zm00001d045972 ( umc81 ) as a candidate for G × E between yield and elevation, and as showing allele frequency associations with temperature and water vapor pressure, but it has been previously highlighted as a candidate for days to anthesis (65), plant height (66), drought stress tolerance (67), and root hair length plasticity (68).…”