Yellow pinks: interspecific hybridization between Dianthus plumarius and related species with yellow flowers
Yellow pinks: interspecific hybridization between Dianthus plumarius and related species with yellow flowers
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DOI：
10.1016/s0304-4238(98)00177-0
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发表时间：
1998-10-30
影响因子：
4.3
通讯作者：
Murray, BG
中科院分区：
文献类型：
--
作者：
Gatt, MK;Hammett, KRW;Murray, BG
通过种间杂交，将黄花康乃馨（2n=2x=30）和石竹（2n=2x=30）的黄花嫁接到白花石竹（2n=6x=90）上。这些杂交种很难制造，但两种杂交组合都产生了少量杂交种。与康乃馨杂交的子代呈粉红色，而与金盏花杂交的子代呈淡米黄色，植株间的强度有一定差异。杂种之间的染色体数目存在差异，要么是四倍体，这是预期的情况，要么是五倍体。在花粉母细胞减数分裂和花粉产量的观察中发现，该植物产生未还原（二倍体）配子的频率很高。花色素分析表明，黄花颜色是由高含量的黄酮和黄酮醇苷引起的，而黄色康乃馨则是由查尔酮引起的。因此，与knappii杂交的Fl是黄色的，因为它们含有与knappii相同的色素，而与康乃馨杂交的Fl是粉红色的，因为它们能够将查尔酮转化为二氢黄酮，然后转化为花青素。(C) 1998 Elsevier Science B.V.版权所有
Interspecific hybridization was carried out with the aim of transferring yellow flower colour from yellow-flowered carnations (2n=2x=30) and Dianthus knappii (2n=2x=30) to a white-flowered cultivar of the garden pink, Dianthus plumarius (2n=6x=90). These hybrids were difficult to make but a small number were produced from both cross combinations. All the progeny from the crosses with carnations were pink but those from crosses with D. knappii were pale cream-yellow, with some variation in intensity between plants. Differences were observed in chromosome number between hybrids, which were either tetraploid, which is the expected situation, or pentaploid. Observations on pollen mother cell meiosis and pollen production in D. knappii revealed that the plants were producing unreduced (diploid) gametes at significant frequencies. Analysis of the flower pigments showed that the yellow flower colour of D. knappii resulted from the presence of high levels of flavone and flavonol glycosides whereas those of yellow carnations were chalcones. Thus, the Fl hybrids with D. knappii were yellow because they contained the same pigments as D. knappii but the hybrids with the carnations were pink due to their ability to convert chalcones through to dihydroflavones and then to anthocyanins. (C) 1998 Elsevier Science B.V. All rights reserved.