Genetic studies on the interspecific cytoplasm substitution lines of an Asian perennial strain of Oryza rufipogon Griff. and O. glaberrima Steud. |
| |
| Authors: | Tomosaburo Yabuno |
| |
| Institution: | (1) College of Agriculture, University of Osaka Prefecture, 591 Sakai, Osaka Prefecture, Japan |
| |
| Abstract: | Summary It is shown that the restorer gene Rf
j
extracted from the Japanese rice variety Akebono is effective on pollen restoration in the cytoplasm substitution line having the nucleus of Oryza glaberrima and japonica or indica cytoplasm of O. sativa, and is of the sporophytic type.The Asian perennial type of the wild rice species O. rufipogon is considered to be the progenitor of O. sativa. Two substitution lines having the cytoplasm of a perennial strain of O. rufipogon from Sri Lanka and the nucleus of O. glaberrima with or without the gene Rf
j
in homozygous condition have been bred by means of successive backcrosses. These lines have now reached the BC5 generation. Plants of the lines resemble morphologically the recurrent parent, but do not show pollen restoration, indicating that the cytoplasm of the rufipogon strain induced male sterility and that the gene Rf
j
does not act as the restorer. |
| |
| Keywords: | Oryzasativa rice japonica variety indica variety O glaberrima O rufipogon wild rice cytoplasm substitution line cytoplasmic male sterility sporophytic type |
| 本文献已被 SpringerLink 等数据库收录！ |
