Asynchronous meiosis in Cucumis hystrix–cucumber synthetic tetraploids resulting in low male fertility
Asynchronous meiosis in Cucumis hystrix–cucumber synthetic tetraploids resulting in low male fertility
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黄瓜合成四倍体的异步减数分裂导致雄性生育力低
DOI：
10.1016/j.cj.2016.05.003
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发表时间：
2016-08
期刊：
影响因子：
--
通讯作者：
Yiqun Weng
中科院分区：
文献类型：
--
作者：
Junsong Pan;Paradee Thammapichai;Zongyun Li;Yiqun Weng
种间杂交和异源多倍化有助于许多重要作物的改良。最近，我们利用黄瓜(Cucumis sativus，2n=2x=414)与其亲缘关系C。Hystrix(2n=2x=924)，然后化学诱导染色体加倍。获得的异源四倍体植株进行了三代自花授粉。双二倍体植株的育性和结实率都很低。本研究利用荧光原位杂交技术对花粉母细胞减数分裂过程中的染色体行为进行了研究，旨在找出双二倍体植物育性和结实率低的原因。同源染色体配对看起来正常，但染色体落后的现象很常见，主要是由于两个供体基因组的染色体减数分裂不同步所致。我们认为，亲本基因组间的不同步减数分裂节律是导致水稻育性低、结实率低的主要原因。双二倍体黄瓜植株。
Interspecific hybridization and allopolyploidization contribute to the improvement of many important crops. Recently, we successfully developed an amphidiploid from an interspecific cross between cucumber (Cucumis sativus, 2n= 2x= 14) and its relativeC. hystrix(2n= 2x= 24) followed by chemical induction of chromosome doubling. The resulting allotetraploid plant was self-pollinated for three generations. The fertility and seed set of the amphidiploid plants were very low. In this study, we investigated the meiotic chromosome behavior in pollen mother cells with the aid of fluorescencein situhybridization, aiming to identify the reasons for the low fertility and seed set in the amphidiploid plants. Homologous chromosome pairing appeared normal, but chromosome laggards were common, owing primarily to asynchronous meiosis of chromosomes from the two donor genomes. We suggest that asynchronous meiotic rhythm between the two parental genomes is the main reason for the low fertility and low seed set of theC. hystrix–cucumber amphidiploid plants.
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影响因子：
6.2
作者：
C. Risso-Pascotto;M. S. Pagliarini;C. Borges do Valle;L. Jank
通讯作者：
C. Risso-Pascotto;M. S. Pagliarini;C. Borges do Valle;L. Jank
影响因子：
1.7
作者：
Han, Y. H.;Zhang, Z. H.;Jin, W. W.
通讯作者：
Jin, W. W.
DOI：
10.4238/vol9-4gmr919
发表时间：
2010-12
期刊：
Genetics and molecular research : GMR
影响因子：
--
作者：
G. L. Ricci;M. S. Pagliarini;C. Valle
通讯作者：
G. L. Ricci;M. S. Pagliarini;C. Valle
DOI：
10.1002/9780470650172.ch4
发表时间：
2010-07
期刊：
Plant Breeding Reviews
影响因子：
--
作者：
S. Jansky
通讯作者：
S. Jansky
影响因子：
7.2
作者：
Li, Junhua;Dukowic-Schulze, Stefanie;Chen, Changbin
通讯作者：
Chen, Changbin