Studies on awns in polyploid rice (Oryza sativa L.) and preliminary cross experiments of a special awnless tetraploid rice
Studies on awns in polyploid rice (Oryza sativa L.) and preliminary cross experiments of a special awnless tetraploid rice
复制标题
多倍体水稻芒的研究及特殊无芒四倍体水稻的初步杂交试验
DOI：
10.1007/s10722-013-0074-1
复制
发表时间：
2014-01
影响因子：
2
通讯作者：
Cai, De-Tian
中科院分区：
文献类型：
--
作者：
Zhang, Xian-Hua;Chen, Dong-Ling;He, Yu-Chi;Cai, De-Tian
有芒是水稻重要的遗传性状，几乎所有无芒的二倍体品种在多倍体化后都会变成有芒品种。为了提高对山楂的认识，促进水稻多倍体育种的发展，研究了多倍体化对山楂的影响，总结了山楂的发育和分布特点。此外，还进行了一种特殊的无芒四倍体水稻与两种有芒四倍体水稻的杂交试验。结果表明，多倍体水稻的芒最早出现在雌蕊-耐力形成阶段，芒的发育与其他器官或发育特征有稳定的对应关系。多倍体化对山楂有很大的影响。二倍体水稻翻倍为多倍体对芒长影响较大。然而，品种之间的变化程度有所不同。本研究的无芒和有芒四倍体水稻F1杂交品种均为部分芒型，且有芒亲本的平均、最大芒长和有芒小穗百分率（PAS）越大，其F1杂交品种的这些性状也越大。但不同的杂交组合表现出一定的差异。F2代仍为部分遮阳型，未发现无遮阳型。有芒籽粒发育植株的芒长和PAS均显著大于无芒籽粒发育植株。这说明籽粒的芒性状会影响由该籽粒发育而来的植株。研究结果为进一步研究芒的遗传特性奠定了基础。
Awns are an important genetic character of rice (Oryza sativa L.) and almost all awnless diploid varieties will change into awned varieties after polyploidization. In order to increase the understanding of awns and promote the development of polyploid rice breeding, the effect of polyploidization on awns was investigated and the development and distribution characteristics have been summarized. Furthermore, cross experiments were made between a special awnless tetraploid rice and two awned tetraploid rice. The results showed that the awns of polyploid rice initially emerged at the pistil–stamina formation stage and there was a stable corresponding relationship between awn development and other organs or development characteristics. Polyploidization had a great effect on awns. Awn length was considerably affected when diploid rice was doubled to polyploid. However, the degree of change varied between varieties. The F1 hybrids between awnless and awned tetraploid rice in this research were all partial awn types and showed that the larger the mean, maximum awn length and the percentage of awned spikelets (PAS) of their awned parents, then the larger these of their F1 hybrids. But different cross combinations showed some variation. The F2 generations were still all partially awned and awnless type was not found. And the awn length and PAS of the plants developing from awned grains were significantly greater than that of the plants developing from awnless ones. This showed that the awn character of a grain could affect the plants developing from this grain. The results laid the foundation of further research of awn inheritance.
登录
查看更多内容
DOI：
--
发表时间：
2008
期刊：
Journal of Shanghai Normal University
影响因子：
--
作者：
Dong Yan-jun
通讯作者：
Dong Yan-jun
影响因子：
4.2
作者：
Sweeney M;McCouch S
通讯作者：
McCouch S
影响因子：
3.3
作者：
Lien Fang Chao
通讯作者：
Lien Fang Chao
DOI：
--
发表时间：
2001
期刊：
Acta Agronomica Sinica
影响因子：
--
作者：
C. De
通讯作者：
C. De
影响因子：
4.2
作者：
Fuller DQ
通讯作者：
Fuller DQ