ISSN:
1573-5060
Schlagwort(e):
Oryzasativa
;
rice
;
japonica variety
;
indica variety
;
O. glaberrima
;
O. rufipogon
;
wild rice
;
cytoplasm substitution line
;
cytoplasmic male sterility
;
sporophytic type
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
Notizen:
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.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1007/BF00041498
