Inheritance of seed dormancy in Tibetan semi-wild wheat accession Q1028.
Inheritance of seed dormancy in Tibetan semi-wild wheat accession Q1028.
复制标题
西藏半野生小麦Q1028种子休眠的遗传。
DOI：
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发表时间：
2005
期刊：
影响因子：
--
通讯作者：
Zheng You-liang
中科院分区：
文献类型：
--
作者：
Lan Xiu-Jin;Wei Yu-ming;Liu Deng-cai;Yan Ze-hong;Zheng You-liang
西藏半野生小麦（Triticum aestivum ssp. tibetanum Shao）是中国特有的六倍体小麦遗传资源之一，仅分布于中国青藏高原。它具有特殊的特征，例如去壳颖片和穗状断节。然而，种子休眠是小麦抗收获前发芽的另一个重要特征，但很少有报道。对10余个西藏半野生小麦材料的种子休眠进行了评价，脱粒种子和硬面团期完整穗处理的发芽率均为0%或接近0%。以西藏半野生小麦Q1028为材料，通过测定完整穗、带苞粉种子、正常种子、穿皮种子和切片胚的种子萌发率，考察其种子休眠特性。据观察，Q1028 的胚休眠导致其种子休眠。使用在硬面团阶段脱粒的种子和完整的穗，利用Q1028与易于收获前发芽的小麦品系88-1643杂交的F1、F2、F3和F2BC1群体进行种子休眠的遗传。 F1 植株中种子和完整穗的发芽率分别为 1.0% 和 0.9%。这表明Q1028的种子休眠是作为显性性状遗传的。通过对F2、F3和F2BC1群体的遗传分析发现，Q1028种子的强休眠是由两个显性基因控制的。
Tibetan semi-wild wheat (Triticum aestivum ssp. tibetanum Shao) is one of the Chinese endemic hexaploid wheat genetic resources, distributed only in the Qinghai-Xizang Plateau of China. It has special characters, such as a hulled glume and spike disarticulation. However, seed dormancy, another important character for wheat resistance to pre-harvest sprouting, was rarely reported. Seed dormancy of more than 10 Tibetan semi-wild wheat accessions was evaluated, and their germinations were 0% or near 0% with both treatments of threshed seeds and intact spikes at hard dough stage. Tibetan semi-wild wheat accession Q1028 was investigated for its seed dormant characters by testing the seed germination percentages of intact spikes, seeds with bract powder, normal seeds, seeds with pierced coat, and sectioned embryos. It was observed that embryo dormancy of Q1028 accounted for its seed dormancy. Using threshed seeds and intact spikes at hard dough stage, the inheritance of seed dormancy was carried out using the F1, F2, F3 and F2BC1 populations of the cross between Q1028 and a wheat line 88-1643, susceptible to preharvest sprouting. The germinations of seeds and intact spikes in F1 plants were 1.0% and 0.9%, respectively. It indicated that seed dormancy of Q1028 was inherited as a dominant trait. From the genetic analysis of the F2, F3 and F2BC1 populations it was found that the strong seed dormancy of Q1028 was controlled by two dominant genes.
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影响因子：
2
作者：
Chen, QF;Yen, C;Yang, JL
通讯作者：
Yang, JL
DOI：
--
发表时间：
2002
期刊：
--
影响因子：
--
作者：
Lan;Xiu-jin;Zheng;You-liang;Liu;Deng-cai;Wei;Yu-ming;Yan;Ze-hong;Zhou;Yong-hong
通讯作者：
Lan;Xiu-jin;Zheng;You-liang;Liu;Deng-cai;Wei;Yu-ming;Yan;Ze-hong;Zhou;Yong-hong
影响因子：
11.4
作者：
Cui Yun-xing;Ma Yuan-sheng
通讯作者：
Cui Yun-xing;Ma Yuan-sheng
影响因子：
2
作者：
Yuming Wei;Youliang Zheng;Deng-Cai Liu;Yonghong Zhou;X. Lan
通讯作者：
Yuming Wei;Youliang Zheng;Deng-Cai Liu;Yonghong Zhou;X. Lan
影响因子：
5.4
作者：
Roy, JK;Prasad, M;Gupta, PK
通讯作者：
Gupta, PK