Abstract
In a previous paper, the authors reported on the affinity between the lines derived from the intersubspecific hybrid of rice, Oryza sativa L., and their original parents. In short, most of these lines were thought to have returned to Japonica type parent, but some lines differed from their original parents and seemed to become a new type. To elucidate it more thoroughly, the authors produced the F1 hybrids between the 17 lines chosen at random from the progeny of the intersubspecific hybrid and the ecotypes of rice plant, Japanese rice, aus, aman, bulu, tjereh and boro, and investigated their seed fertilities. The results of the investigation lines were divided into two froups, “a” and “b”, according to sexual affinity between thses lines and the ecotypes. The lines of “a” group showed the highest affinity to Japanese rice, and moreover, the affinity to other ecotypes were similar to that between Japanese rice and other ecotypes. The authors considered form these results that the lines belonging to “a” group had returned to Japonica type parent. Three lines of “b” group were, on the other hand, thought to belong to intermediate tyoe grouped by morinaga, as they showed considerably high affinity to all ecotypes. They, however, differed from one another, and also differed from aus and bulu which were typical intermediate type. It gives us much interest in understanding the phylogenetic differentiation of cultivated rice varieties that the intermediate type was produced experimentally from Japonica-Indica hybrid.
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Claims 6
Claim · model-written summary
Hybrid-derived rice lines separated into two sexual-affinity groups.
- Taxon
- rice
Oryza sativat0 - Outcome
- two froups, “a” and “b”e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The results of the investigation lines were divided into two froups, “a” and “b”, according to sexual affinity between thses lines and the ecotypes.”
t0“rice plant”
Claim · model-written summary
Group a lines had greatest affinity with Japanese rice.
- Taxon
- riceOryza sativae0
- Material
- “a” groupe0
- Outcome
- affinity to Japanese ricee0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The lines of “a” group showed the highest affinity to Japanese rice”
Claim · model-written summary
Group a affinity with other ecotypes resembled Japanese rice affinity with those ecotypes.
- Taxon
- riceOryza sativae0
- Outcome
- affinity to other ecotypese0
- Direction
- similare0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the affinity to other ecotypes were similar to that between Japanese rice and other ecotypes”
Claim · model-written summary
Authors interpreted group a as having returned to the Japonica parent type.
Not reportedTaxon
Verbatim
e0“the lines belonging to “a” group had returned to Japonica type parent”
Claim · model-written summary
Three group b lines had high affinity to all rice ecotypes and were interpreted as intermediate type.
Not reportedTaxon
Verbatim
e0“Three lines of “b” group were, on the other hand, thought to belong to intermediate tyoe grouped by morinaga, as they showed considerably high affinity to all ecotypes.”
Claim · model-written summary
Group b lines differed from one another and from the intermediate types aus and bulu.
- Outcome
- differed from one another, and also differed from aus and bulue0
Not reportedTaxon
Verbatim
e0“They, however, differed from one another, and also differed from aus and bulu which were typical intermediate type.”