| 玉米小斑病菌(Drechslera maydis)与玉米圆斑病菌(Drechslera carbonum)种间杂交的初步研究 |
| |
| 引用本文： | 胡旭章,黄梧芳. 玉米小斑病菌(Drechslera maydis)与玉米圆斑病菌(Drechslera carbonum)种间杂交的初步研究[J]. 河北农业大学学报, 1992, 0(2) |
| |
| 作者姓名： | 胡旭章 黄梧芳 |
| |
| 作者单位： | 河北农业大学植保系，河北农业大学植保系 |
| |
| 摘 要： | 研究相关种内控制有性机制的遗传体系,可以对进化的方向和形式提供重要的信息。研完交配机制中,遗传上的相似之处和不同之处,是确定属内各个种的进化地位和相互间关系的重要方法。研究种间杂交的频率和程度,以及种间杂交和种内交配可育也有利于进行生物评定。本实验通过D.maydis种内交配和D.maydis与D.carbonum种间杂交的初步研究结果,对D.carbonum的分类地位提出一些初步看法。
|
| 关 键 词： | 玉米小斑病菌 玉米圆斑病菌 交配型 种内交配 种间杂交 |
Preliminary Study on Interspecific Crossing of Drechslera (=Helminthosoporium ) maydis and Drechslera (=Helminthosporium ) carbonum |
| |
| Hu Xuzhang Huang Wufang. Preliminary Study on Interspecific Crossing of Drechslera (=Helminthosoporium ) maydis and Drechslera (=Helminthosporium ) carbonum[J]. Journal of Agricultural University of Hebei, 1992, 0(2) |
| |
| Authors: | Hu Xuzhang Huang Wufang |
| |
| Abstract: | 82 monoascosporic isolates were obtained from intraspecies crossing of D.maydis. The conidial morphology of the centre part of one colony of 82 isolates was similar with D.maydis. the outer part of the colony was similar with D.carbonum. 49 of the 82 isolates differed markedly from parental strains in conidiospore size, a frequency of 59o%. 544 of total 5299 conidia produced by a cross between D.maydis and D.maydis were similar in colour with D.carbonum, 4755 were similar with D.maydis 1153 were straight, 4146 were curve. 65 monoascosporic isolates were obtained from a cross between D.rnaydis and D.carbonum. 5 of the 65 isolates were similar with D.carbonum in conidial morphology. Among the 4032 investigated conidia, 1038 conidia were similar with D.carbonum in colour,2994 were similar with D.maydis,1033 were straight, 2999 were curve. The segregation ratio fitted for 1:3. This preliminary study doubts the specific classfication of D.carbonum. |
| |
| Keywords: | D. maydis D. carbonum interspecific crossing intraspecific crossing mating type |
| 本文献已被 CNKI 等数据库收录！ |
