A pattern of unique embryogenesis occurring via apomixis in Carya cathayensis
A pattern of unique embryogenesis occurring via apomixis in Carya cathayensis
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山核桃通过无融合生殖发生的独特胚胎发生模式
DOI：
10.1007/s10535-012-0256-2
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发表时间：
2012-04
影响因子：
1.5
通讯作者：
Huang, J. Q.
中科院分区：
文献类型：
--
作者：
Jin, S. H.;Xia, G. H.;Huang, Y. J.;Huang, J. Q.
无融合生殖代表了传统植物有性繁殖的改变，以产生本质上具有克隆胚胎的种子。山核桃是一种重要的油料树种，是一种新的无融合生殖植物。子房有一个室，其中一个胚珠是单珠被的，是直生的。胚胎学研究表明，其胚囊形成的发育模式为典型的何首乌类型。经多次组织学观察，未发现合子胚胎，胚胎来源于珠心细胞。珠心胚原基位于胚囊的珠孔和合点端，而成熟胚仅在珠心喙部位发育。珠心胚团最初在珠心喙部位发育成珠心胚或分裂成两个珠心原胚。珠心胚的后期发育与合子胚相似，由球形胚向心形胚、子叶胚发展。
Apomixis represents an alteration of classical sexual plant reproduction to produce seeds that have essentially clonal embryos. In this report, hickory (Carya cathayensis Sarg.), which is an important oil tree, is identified as a new apomictic species. The ovary has a chamber containing one ovule that is unitegmic and orthotropous. Embryological investigations indicated that the developmental pattern of embryo sac formation is typical polygonum-type. Zygote embryos were not found during numerous histological investigations, and the embryo originated from nucellar cells. Nucellar embryo initials were found both at the micropylar and chalazal ends of the embryo sac, but the mature embryo developed only at the nucellar beak region. The mass of the nucellar embryo initial at the nucellar beak region developed into a nucellar embryo or split into two nucellar proembryos. The later development of the nucellar embryo was similar to the zygotic embryo and progressed from globular embryo to heart-shape embryo and to cotyledon embryo.
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DOI：
10.1002/9780470650158.ch2
发表时间：
2010-06
期刊：
Plant Breeding Reviews
影响因子：
--
作者：
Y. Savidan
通讯作者：
Y. Savidan
影响因子：
56.9
作者：
Higashiyama, T;Yabe, S;Kuroiwa, T
通讯作者：
Kuroiwa, T
影响因子：
4.2
作者：
Gupta, P;Shivanna, KR;Ram, HYM
通讯作者：
Ram, HYM
影响因子：
1.9
作者：
J. Carman
通讯作者：
J. Carman
影响因子：
2.1
作者：
H. Wilms;J. L. Went;M. Cresti;F. Ciampolini
通讯作者：
H. Wilms;J. L. Went;M. Cresti;F. Ciampolini