Varietal Difference in Pre-germination Flooding Tolerance and Waterlogging Tolerance at the Seedling Stage in Maize Inbred Lines.

QTL mapping of root angle in F₂ populations from maize ‘B73’ × teosinte ‘<i>Zea luxurians</i>’

“…Also, in our previous study, B73 exhibited a higher degree of flooding tolerance at the seedling stage among the 223 maize accessions (Mano et al 2002), but this accession has not yet been observed to form surface roots during flooding or root aerenchyma development. By transferring the QTLs controlling root angle into B73 by marker assisted selection, it may be possible to develop a shallow-rooting B73 together with the ability to form surface roots under flood conditions and a higher level of flooding tolerance.…”

Identification of QTL Controlling Flooding Tolerance in Reducing Soil Conditions in Maize (Zea mays L.) Seedlings

“…00002910), PA91 (00094116), and H84 (45009662) were obtained from the Genebank, National Institute of Agrobiological Sciences, Tsukuba, Japan; B73 and Mo17 were provided by the Corn and Sorghum Breeding Laboratory, National Institute of Livestock and Grassland Science, Nasushiobara, Japan. In a previous seedling test, F1649 and B73 showed tolerance and Mo17, PA91, and H84 showed sensitivity to fl ooding under non-reducing conditions in the soil (Mano et al, 2002;Y. Mano unpublished).…”

“…It appears to be quantitatively inherited in maize also, showing relatively low repeatability (Mano et al, 2002). If we separately evaluate genetic variations in several quantitatively inherited fl ooding-related traits, analyze the mode of inheritance of each trait, and pyramid fl ooding-tolerance genes, we could breed stable fl ooding-tolerant lines.…”

Varietal Differences of Flood Tolerance during Germination and Selection of the Tolerant Lines in Common Buckwheat

“…There was a slight negative correlation between the seed germination rate reported by Murayama et al (2004) and seedling emergence rate showed in this experiment (r = -0.653, p = 0.110) in seven shared varieties. No correlation was reported between the fl ood tolerance of seeds and that of young plants in barley (Hordeum vulgare L.) (Takeda, 1987b), wheat (Triticum aestivum L.) (Takeda, 1987a) and in maize (Zea mays L.) seeds and young plants (Mano et al, 2002). These results suggest the involvement of different mechanisms in fl ood tolerance at different growth stages.…”