http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : David J . McLaughlin (Kwon S . Yoon) (검색결과 1 건)
- 무료
- 기관 내 무료
- 유료
-
Boletus rubinellus 에서 감수분열 (減數分裂) 및 감수분열후 유사분열 (有絲分裂)
윤권상,David J . McLaughlin (Kwon S . Yoon) 한국식물학회 1987 Journal of Plant Biology Vol.30 No.4
Meiosis and postmeiotic mitosis in Boletus rubinellus were examined ultrastructurally. Meiosis occurred at the apex of the basidium. A sausage-shaped spindle pole body(SPB) was observed along with the presence of synaptonemal complexes during pachytene and a diglobular SPB was present on late pachytene or diplotene nuclei. During metaphase Ⅰ, the monoglobular SPB at the spindle pole was surrounded by a membrane and the nuclear envelope was discontinuous. At anaphase Ⅰ, the chromosomes became better defined and formed a central spindle. The nucleolus was extruded from the nucleus. During anaphase Ⅰ, the SPB was excluded from the chromosomal region by a membrane and both poles were fully separated to opposite sides of the basidial wall. In meiosis Ⅱ, the two nuclei divided synchronously and the spindles were parallel. The spindles were smaller than in meiosis Ⅰ, while the SPB was approximately the same size as that of the similar stage in meiosis Ⅰ. During anaphasetelophase Ⅱ, the SPB was surrounded by a cap of endoplasmic reticulum(ER) that delimited it from the spindle. The postmeiotic interphase nuclei migrated to the mid-region of the basidium before migration to the spores. The SPB at this stage was diglobular. A postmeiotic mitosis occurred within the basidiospore, and the plane of the spindle was oblique to the long axis of the spore. The spindle and SPB were smaller than at meiosis Ⅰ and there were fewer nonchromosomal microtubules. At anaphase, the nucleolus was present inside the nuclear envelope but lateral to the spindle.
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
