National Agricultural Research Center for Hokkaido Region , 1 Hitsujigaoka, Toyohira, Sapporo, Hokkaido 062-8555, Japan.
Breed Sci. 2012 Jan;61(5):646-52. doi: 10.1270/jsbbs.61.646. Epub 2012 Feb 4.
The length of the reproductive period affects the grain yield of soybean (Glycine max [L.] Merr), and genetic control of the period might contribute to yield improvement. To detect genetic factor(s) controlling the reproductive period, a population of recombinant inbred lines (RILs) was developed from a cross between Japanese landrace 'Ippon-Sangoh' and, Japanese cultivar 'Fukuyutaka' which differ in their duration from flowering to maturation (DFM) relative to the difference in the duration from sowing to flowering (DSF). In the RIL population, the DFM correlated poorly (r = -0.16 to 0.34) with the DSF in all field trials over 3 years. Two stable QTLs for the DFM on chromosomes (Chr-) 10 and 11 as well as two stable QTLs for the DSF on Chr-10 and -16 were identified. The QTL on Chr-11 for the reproductive period (designated as qDfm1; quantitative trait locus for duration from flowering to maturation 1) affected all three trials, and the difference in the DFM between the Fukuyutaka and Ippon-Sangoh was mainly accounted for qDfm1, in which the Fukuyutaka allele promoted a longer period. qDfm1 affected predominantly the reproductive period, and thus it might be possible to alter the period with little influence on the vegetative period.
生殖期的长短会影响大豆（Glycine max [L.] Merr）的籽粒产量，而生殖期的遗传控制可能有助于提高产量。为了检测控制生殖期的遗传因子，我们从日本地方品种‘Ippon-Sangoh’和日本栽培品种‘Fukuyutaka’之间的杂交后代中开发了一个重组自交系（RIL）群体，这两个品种在开花到成熟的持续时间（DFM）方面存在差异，而与播种到开花的持续时间（DSF）的差异有关。在 RIL 群体中，在 3 年的所有田间试验中，DFM 与 DSF 的相关性很差（r = -0.16 到 0.34）。在 Chr-10 和 Chr-11 上鉴定到了两个稳定的 DFM QTL，以及在 Chr-10 和 Chr-16 上鉴定到了两个稳定的 DSF QTL。Chr-11 上的生殖期 QTL（命名为 qDfm1；开花到成熟持续时间的数量性状位点 1）影响了所有三个试验，而 Fukuyutaka 和 Ippon-Sangoh 之间的 DFM 差异主要归因于 qDfm1，其中 Fukuyutaka 等位基因促进了更长的时期。qDfm1 主要影响生殖期，因此可能可以在对营养期影响较小的情况下改变生殖期。
