GENETIC AND LINKAGE ANALYSIS OF LOW TEMPERATURE-INDUCED BROWNING IN SOYBEAN SEED COATS
GENETIC AND LINKAGE ANALYSIS OF LOW TEMPERATURE-INDUCED BROWNING IN SOYBEAN SEED COATS
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DOI：
10.1093/oxfordjournals.jhered.a111499
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发表时间：
1994-11-01
影响因子：
3.1
通讯作者：
ABE, J
中科院分区：
文献类型：
--
作者：
TAKAHASHI, R;ABE, J
开花时的低温（类似于15摄氏度）导致大豆（Glycine max（L.）梅尔）围绕着脐区域。它在预防性使用中有不利影响。由于冷却色素沉着的程度是强烈依赖于花的发育阶段，并在冷却处理时随着花的年龄增加。利用感病品种的F-1代杂种和F-2代群体进行遗传分析。北小町和一个宽容的cv。为了确定色素沉着的遗传基础。对杂种F1代的分析表明，感病性对耐病性为不完全显性。在F-2后代中，色素沉着程度连续变化，偏向北小町。用Castle-Wright方法估计的最小相关基因数为1.25，用最大似然法估计的最小相关基因数为1。因此，一个或两个主基因参与色素沉着。与6个标记基因的连锁分析表明，一个负责色素沉着的基因与一个成熟的基因，白炽灯长日照不敏感。在分离群体中进行迟熟选择可能是提高耐冷性的一种间接而有效的方法。5个标记基因Ln、Enp、ldh 2、Ti和Acol与色素沉着基因独立分离。
Chilling temperatures (similar to 15 degrees C) at flowering cause a brown pigmentation in the seed coats of soybean (Glycine max (L.) Merr.) around the hilum region. It has unfavorable effects in confectionary uses. The degree of pigmentation due to chilling was strongly dependent on developmental stages of flowers and increased with the age of flowers at the time of chilling treatment. Genetic analysis was performed using F-1 hybrids and F-2 population derived from a cross of a sensitive cv. Kitakomachi and a tolerant cv. Koganejiro in order to determine the genetic basis of pigmentation. Analysis of F-1 hybrids showed that the sensitivity was incompletely dominant to the tolerance. In F-2 progeny, degree of pigmentation varied continuously with a skew to Kitakomachi. The minimum number of genes concerned was estimated to be 1.25 by the method of Castle-Wright and 1 by the maximum likelihood method. Therefore, one or two major genes were involved in the pigmentation. Linkage analysis with six marker genes indicated that one of the genes responsible for the pigmentation is linked with a maturity gene for insensitivity to incandescent long daylength. Selection for delayed maturity in segregating populations may be an indirect but effective method to improve the chilling tolerance. Five marker genes, Ln, Enp, ldh2, Ti, and Acol, segregated independently with genes for the pigmentation.