Reciprocal crosses between Magnolia stellata and Magnolia Kobus do not show significant reproductive barriers in seed formation
Reciprocal crosses between Magnolia stellata and Magnolia Kobus do not show significant reproductive barriers in seed formation
复制标题
星形木兰和红木兰之间的互交在种子形成方面没有表现出明显的生殖障碍
DOI：
10.1111/1442-1984.12344
复制
发表时间：
2021
影响因子：
1.4
通讯作者：
Ishida K and Tomaru N
中科院分区：
文献类型：
--
作者：
Tamaki I;Wadasaki N;Ishida K and Tomaru N
同属入侵物种通过杂交减少了本地物种的遗传特有性，有时还会通过遗传或人口泛滥而导致灭绝。在乡土珍稀亚种木兰的范围内，还发现了入侵的栽植/逃逸树种木兰。为了检验这两个物种之间可能的自然杂交，进行了正反交授粉试验，估计了结实率、结实率、雌性生殖结实成功率(FRS)和种子重量。和我一起。作为母本树，种内杂交和种间杂交的所有测量结果均无显著差异。和我一起。作为母本树，除座果率外，其余各项指标均无显著差异。这些结果表明，这两个物种和种植/逃逸的M之间不存在生殖障碍。科布斯岛附近的自然栖息地。星辰通过杂交来抵抗威胁。
Congeneric invasive species reduce genetic endemism of native species through hybridization and sometimes cause extinction through genetic or demographic swamping. In the range ofMagnolia stellata, a native rare subtree species,Magnolia kobus, an invasive planted/escaped tree species, can also be found. In order to examine possible natural hybridization between the two species, a reciprocal cross‐pollination experiment was conducted, and fruit set, seed set, female reproductive success in seed formation (FRS; fruit set × seed set) and seed weight were estimated. WithM. stellataas the maternal tree, there were no significant differences in all measurements between intra‐ and interspecific crosses. WithM. kobusas the maternal tree, there were also no significant differences in all measurements except fruit set. These results suggest that there are no reproductive barriers between the two species and planted/escapedM. kobusnear the natural habitat ofM. stellatapresents a threat through hybridization.