Utility of Japanese native lowland rice [Oryza sativa] varieties with high V/R ratio as breeding materials
2009
Sasahara, H.(National Agricultural Research Center, Joetsu, Niigata (Japan). Hokuriku Research Center) | Shigemune, A. | Goto, A. | Miura, K. | Fukuyama, T.
In order to identify the genetic resources of rice varieties with higher translocation efficiency, the ratio of a number of large vascular bundles in the peduncle (Vb) to that of the primary rachis branch (Rb) (V/R ratio) was investigated in 103 varieties of Japanese native lowland rice. We found 6 high V/R ratio (-1.5) varieties, which consisted of two indica varieties and four temperate (Tm)-japonica varieties. The course of the Vb in the rachis of the Tm-japonica varieties with a high V/R ratio was compared with those of an indica variety, Habataki (V/R ratio
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