| 著者 | 笠原 安夫| 定金 章| |
|---|---|
| 発行日 | 1958-02 |
| 出版物タイトル | 農学研究 |
| 巻 | 45巻 |
| 号 | 3号 |
| 資料タイプ | 紀要論文 |
| 著者 | 笠原 安夫| 木下 收| 平田 勝| |
|---|---|
| 発行日 | 1955-06-20 |
| 出版物タイトル | 農学研究 |
| 巻 | 43巻 |
| 号 | 2号 |
| 資料タイプ | 紀要論文 |
| 著者 | 笠原 安夫| 木下 收| 平田 勝| |
|---|---|
| 発行日 | 1955-06-20 |
| 出版物タイトル | 農学研究 |
| 巻 | 43巻 |
| 号 | 2号 |
| 資料タイプ | 紀要論文 |
| 著者 | 笠原 安夫| |
|---|---|
| 発行日 | 1948-09-10 |
| 出版物タイトル | 農学研究 |
| 巻 | 37巻 |
| 号 | 4号 |
| 資料タイプ | 紀要論文 |
| 著者 | 笠原 安夫| |
|---|---|
| 発行日 | 1948-11-10 |
| 出版物タイトル | 農学研究 |
| 巻 | 38巻 |
| 号 | 1号 |
| 資料タイプ | 紀要論文 |
| 著者 | 笠原 安夫| 木下 收| |
|---|---|
| 発行日 | 1952-12-01 |
| 出版物タイトル | 農学研究 |
| 巻 | 40巻 |
| 号 | 3号 |
| 資料タイプ | 紀要論文 |
| タイトル（別表記） | Genetic factors for yield related traits in lowland New Rice for Africa (NERICA) |
|---|---|
| フルテキストURL | srfa_113_011_016.pdf |
| 著者 | 冨田 朝美| 秋元 唯| |
| 抄録 | Genetic factors of yield related traits in lowland New Rice for Africa variety (NERICA) using different nitrogen condition and QTL to increase rice yield in lowland NERICAs were clarified. Indica Group rice variety (Oryza sativa L.) IR64 increased panicle number, culm weight and panicle weight, according to nitrogen concentration. The tendency is especially remarkable under low nitrogen concentration. NERICA‒L‒19, which is derived from a cross between IR64 and TOG5681 (Oryza glaberrima S.), showed similar values for panicle weight and culm weight, and it showed higher plant height, panicle weight and culm weight and lower harvest index than those of IR64 under all the concentrations. QTL analysis for the agronomic traits were performed using hybrid population derived from a cross between IR64 and NERICA‒L‒19. A total of 22 QTLs were detected on chromosomes (chrs.) 1 (3 QTLs), 2 (2), 4 (2), 5 (5), 6 (1), 7 (1), 8 (6) and 10 (2). Among them, 4 regions at 34.1‒36.6Mbp of chr. 1, at 23.8‒27.8Mbp of chr. 5 and at 4.8Mbp and 20.3‒28.4Mbp of chr. 8 showed several QTLs’ peaks overlapped. The regions of chr. 5 and 4.8Mbp of chr. 8 increased panicle weight by IR64 allele. Those of chr. 1 and 20.3-28.4Mbp of chr. 8 increased plant height and harvest index, respectively, by NERICA‒L‒19 allele. These results indicated that the larger panicle type of lowland NERICA is suitable under low nitrogen condition. Also, the plant type was controlled by the combination of 4 QTLs’ regions on chr. 1 and short arm of chr. 8 originated from O. glaberrima, and those of chr. 5 and long arm of chr. 8 from O. sativa Indica Group. |
| キーワード | lowland New Rice for Africa (NERICA) nitrogen agronomic traits QTL rice |
| 出版物タイトル | 岡山大学農学部学術報告 |
| 発行日 | 2024-02-01 |
| 巻 | 113巻 |
| 開始ページ | 11 |
| 終了ページ | 16 |
| ISSN | 2186-7755 |
| 言語 | 日本語 |
| 論文のバージョン | publisher |
| 著者 | 齊藤 邦行| 石村 亮| 黒田 俊郎| |
|---|---|
| 発行日 | 1995-03-28 |
| 出版物タイトル | 岡山大学農学部農場報告 |
| 巻 | 17巻 |
| 資料タイプ | 紀要論文 |
| 著者 | 齊藤 邦行| 石村 亮| 藤林 哲哉| 黒田 俊郎| |
|---|---|
| 発行日 | 1995-12-28 |
| 出版物タイトル | 岡山大学農学部農場報告 |
| 巻 | 18巻 |
| 資料タイプ | 紀要論文 |
| 著者 | 齊藤 邦行| 佐藤 貴之| 黒田 俊郎| |
|---|---|
| 発行日 | 1996-12-27 |
| 出版物タイトル | 岡山大学農学部農場報告 |
| 巻 | 19巻 |
| 資料タイプ | 紀要論文 |
| タイトル（別表記） | Cultivar differences in nitrogen use efficiency of rice |
|---|---|
| フルテキストURL | srfa_113_017_024.pdf |
| 著者 | 齊藤 邦行| 岩目 好史| 前川 雅彦| 武田 和義| |
| 抄録 | We investigated the effects of fertilizer-free and fertilizer-applied cultivation on growth, yield and nitrogen (N) utilization of rice cultivars in our Kurashiki paddy fields (Institute of Plant Science and Resources, Okayama Univ.), which have been cultivated without fertilizer since 1970, and also in our Okayama paddy fields, which are conventionally cultivated. In 2001, the cultivars Nipponbare (NIP) and Nourin 18 (N18) were cultivated in the Kurashiki fields, with a “0N plot” (no fertilizer application), a “1N plot” (standard fertilizer application), and a “2N plot” (double fertilizer application). In 2002, five cultivars were grown without fertilizer in the Kurashiki fields, and 51cultivars were tested in 0N and 1N plots in the Okayama fields. Yield (2001) in the Kurashiki fields was higher in the 0N plot for N18 (379g m–2), which had a higher number of spikelets per m2, than NIP (300 g m–2), while in the 1N and 2N plots it was higher for NIP, which had a higher percentage of ripening, and N18 had high yield potential even without fertilizer application, but low fertilizer tolerance. The differences in yield were related to N-uptake (NU), and the differences in N use efficiency (NUE, yield/NU) between cultivars were small. The pot experiment showed that the yield of 0N plot was higher for N18 than NIP grown in Kurashiki soil because of the higher number of spikelets per hill, and the yield in the Okayama soil was higher than that in the Kurashiki soil. Long-term non-fertilized soils are of poor soil fertility, which also decreases the NUE, and the NUE of N18 is higher than that of NIP under isolated conditions. The difference in yields is closely related to sink capacity (SC). In 2002, yields in the Kurashiki fields were highest in Takanari (TAK, 494g m–2) and lowest in NIP (350g m–2), and differences in yields were closely related to SC. NUE was highest in TAK (68.6) and lowest in Akebono (48.1). TAK had high NUE and high sink production efficiency (SPE, SC/NU), while N18 had low NUE but high SC due to higher NU, ensuring high yield even under unfertilized cultivation. Yields in the 0N and 1N plots cultivated in 2002 varied between 244–631g m–2 and 199–769g m–2, respectively. A close positive correlation was observed between yield and SC, and between NU and SC, suggesting that the SC through NU is involved in determining yield. A positive correlation was also observed between NUE and yield. It was found that yield increased with an increase in NUE, and that NUE decreased although yield increased with fertilizer application. Through selection of cultivars with high SPE, it is expected that it will be possible to breed low-input, high-yielding cultivars with high NUE in the future. |
| キーワード | High-yielding rice cultivar Nitrogen use efficiency Nitrogen uptake Sink capacity Sink production efficiency Unfertilized paddy field |
| 出版物タイトル | 岡山大学農学部学術報告 |
| 発行日 | 2024-02-01 |
| 巻 | 113巻 |
| 開始ページ | 17 |
| 終了ページ | 24 |
| ISSN | 2186-7755 |
| 言語 | 日本語 |
| 論文のバージョン | publisher |
| 著者 | 志茂山 貞二| 鈴木 増夫| |
|---|---|
| 発行日 | 1956 |
| 出版物タイトル | 岡山大学農学部学術報告 |
| 巻 | 8巻 |
| 号 | 1号 |
| 資料タイプ | 紀要論文 |
| 著者 | 志茂山 貞二| 小合 龍夫| 笹井 一男| |
|---|---|
| 発行日 | 1953 |
| 出版物タイトル | 岡山大学農学部学術報告 |
| 巻 | 3巻 |
| 号 | 1号 |
| 資料タイプ | 紀要論文 |
| 著者 | 赤松 誠一| |
|---|---|
| 発行日 | 1964 |
| 出版物タイトル | 岡山大学農学部学術報告 |
| 巻 | 24巻 |
| 号 | 1号 |
| 資料タイプ | 紀要論文 |
| 著者 | 赤松 誠一| |
|---|---|
| 発行日 | 1965 |
| 出版物タイトル | 岡山大学農学部学術報告 |
| 巻 | 26巻 |
| 号 | 1号 |
| 資料タイプ | 紀要論文 |
| 著者 | 赤松 誠一| |
|---|---|
| 発行日 | 1967 |
| 出版物タイトル | 岡山大学農学部学術報告 |
| 巻 | 29巻 |
| 号 | 1号 |
| 資料タイプ | 紀要論文 |
| 著者 | 赤松 誠一| |
|---|---|
| 発行日 | 1969 |
| 出版物タイトル | 岡山大学農学部学術報告 |
| 巻 | 33巻 |
| 号 | 1号 |
| 資料タイプ | 紀要論文 |
| 著者 | 熊野 誠一| 黒田 俊郎| |
|---|---|
| 発行日 | 1994 |
| 出版物タイトル | 岡山大学農学部学術報告 |
| 巻 | 83巻 |
| 号 | 1号 |
| 資料タイプ | 紀要論文 |
| 著者 | 下瀬 昇| |
|---|---|
| 発行日 | 1958 |
| 出版物タイトル | 岡山大学農学部学術報告 |
| 巻 | 11巻 |
| 号 | 1号 |
| 資料タイプ | 紀要論文 |
| 著者 | 三宅 靖人| 平岡 忠| 多田 正人| |
|---|---|
| 発行日 | 1990-03-20 |
| 出版物タイトル | 岡山大学農学部農場報告 |
| 巻 | 12巻 |
| 資料タイプ | 紀要論文 |