摘要
通过栽培甜菜（ Ｂ．ｖｕｌｇａｒｉｓ Ｌ．） 与白花甜菜（ Ｂ．ｃｏｒｏｌｌｉｆｌｏｒａ Ｚｏｓｓ ．） 种间杂交及回交， 人工合成了异源三倍体甜菜（ＶＶＣ，２ｎ＝ ２７） ，它具有来自白花甜菜的无融合生殖能力，可以稳定传递后代。异源三倍体甜菜具有兼性无融合生殖能力。经过３ 年观察， 异源三倍体甜菜的平均无融合生殖传递率为２４．８６％ ～２７ ．０８％ ，其中累计有９ 个株系传递率达到８０％ 以上（８３．３３％ ～８６ ．６６％ ） 。根据传递后代染色体分布，将异源三倍体甜菜后代分成两种类型，即无融合生殖型及减数分裂型传递。利用植物生长激素在具有无融合生殖基因背景下。
The allotriploid beet (VVC,2n=27) was synthesised by interspecific crossing between Beta vulgaris L.and B.corolliflora Zoss.,which followed with backcrossing the offsprings with B.vulgaris.It has apomictic ability from B. corolliflora and may transmit stably to the next generations. This apomixis are facultative.After 3 years observation,we've found that the apomictic transmission ratio in the allotriploid beet range from 24.86% to 27.08%,and there are 9 lines among them have the transmission ratio above 80%(83.33%～86.66%).According to the chromosome distribution,the offsprings of the allotriploid beet are divided into two categories:apomictic type and meiotio type.The plant auxin were used for these allotriploid with apomictic gene,we attempted to raise the transmission ratio,but it not succeed.
出处
《中国糖料》
1999年第3期1-5,共5页
Sugar Crops of China
基金
国家自然科学基金
关键词
甜菜
无融合生殖
异源三倍体
传递率
Beta vulgaris L.
B.corolliflora Zoss.
Apomixis
Allotriploid beet(VVC)
Transmission ratio
