Flower Variegation in Sweet Pea (Lathyrus odaratus L.) Is Regulated by a Single Recessive Gene That Is Epistatically and Recessively Suppressed by a Pigmentation Gene
Flower Variegation in Sweet Pea (Lathyrus odaratus L.) Is Regulated by a Single Recessive Gene That Is Epistatically and Recessively Suppressed by a Pigmentation Gene
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DOI：
10.2503/hrj.12.125
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发表时间：
2013-01-01
期刊：
影响因子：
--
通讯作者：
Nakayama, Masayoshi
中科院分区：
文献类型：
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作者：
Yagishita, Yoshimi;Hara, Yasuhide;Nakayama, Masayoshi
在甜豌豆品种，一天中性的冬季开花类型，这是在日本的温室切花栽培，表现出较少的表型品种比长日照的夏季开花类型，这是在欧洲栽培。我们希望将目前仅在夏花型品种中发现的杂色花光型引入冬花型植物，以扩大冬花型植物的表型多样性。作为第一步，我们研究了杂色花表型的遗传及其与色素沉着和开花型表型的可能联系。花色素表型在杂色、全色素和白花植株杂交后代中的分离比例表明，杂色花表型受单隐性基因调控，表型受色素基因的上位性和隐性抑制。我们证实，在日本占主导地位的冬季开花类型是由一个单一的隐性基因，以前报道。我们的数据还表明，控制杂色，色素沉着和开花类型的基因独立分离。这些结果表明，冬季开花表型可以固定在一代中的表型出现，而杂色花表型可以固定在一代中的白花表型不出现在自交后代。
In sweet pea cultivars, a day-neutral winter-flowering type, which is cultivated for cut flowers in greenhouses in Japan, shows less phenotypic variety than a long-day summer-flowering type, which is cultivated in Europe. We would hie to introduce the variegated-flower phototype, which is currently found only in the summer-flowering type cultivars, into winter-flowering plants to as to expand the phenotypic diversity of the winter-flowering plant type. As the first step, we examined the inheritance of the variegated-flower phenotype and its possible linkage with pigmentation and flowering-type phenotypes. The segregation ratios of flower pigmentation phenotypes in progenies of crosses between variegated, fully pigmented, and white-flowered plants revealed that the variegated-flower phenotype is regulated by a single recessive gene, and the phenotype is epistatically and recessively suppressed by a pigmentation gene. We confirmed that the winter-flowering type predominant in Japan is regulated by a single recessive gene, an previously reported. Our data also indicate that the genes controlling the variegation, pigmentation, and flowering type segregate independently. These findings suggest that the winter-flowering phenotype can be fixed in the generation in which the phenotype appears, whereas the variegitted-flower phenotype can be fixed at the generation in which the white-flowered phenotype does not appear in the self-progeny.