時期別の気温・水温処理が水稲の成育に及ぼす影響 : 第1報 昼夜別気温・水温および処理日数と不稔籾歩合との関係

• 柴田 和博

• 佐々木 一男

• 島崎 佳郎

書誌事項

タイトル別名

• Effects of Air-Temperature and Water-Temperature at Each Stage of the Growth of Lowland Rice : I. Effect of air-temperature and water-temperature on the percentage of sterile grains
• 時期別の気温・水温処理が水稲の生育に及ぼす影響-1-昼夜別気温・水温および処理日数と不稔籾歩合との関係
• ジキ ベツ ノ キオン スイオン ショリ ガ スイトウ ノ セイイク ニ オヨボス エイキョウ 1 チュウヤ ベツ キオン スイオン オヨビ ショリ ニッスウ ト フネン モミ ブアイ ト ノ カンケイ

抄録

Growing the rice plants under each condition of some possible combinations of the daytime air-temperatures (A_D: 26, 20 and 14°C), the daytime water-temperatures (W_D: 26, 20 and 14°C), the nocturnal air-temperatures (A_N: 20, 14 and 8°C), the nocturnal water-temperatures (W_N:20, 14 and 8°C) and the number of days of treatment (P: 3, 6 and 9 days) at each stage of growth, the autliors examined their main effects and interactions on the percentage of sterile grains. The daytime was settled for eight hours from 9.00 a.m. to 5.00 p.m. and the night-time was settled for sixteen hours from 5.00 p.m. to 9.00 a.m. of the following day. The depth of water was kept in four cm. above the soil surface in pots. The experimental design was 3⁵ factorial in 81 units (1/3 replicate) with one block and defining contrasts 1=A_DW_DA_NW_N²P. The results were summarized as follows; 1. At the differentiating stage of first bract primordia (T₃), all the main effects and their two-factor interactions were not significant (table 4). 2. At the middle differentiating stage of primary branch primordia (T₄), only the main effect of A_D was significant at 5% level. However, that was not considered to be important because the differences of the percentage of sterile grains among them were smaller than 3%(tables 3 and 4). 3. At the stage of reduction division of pollen mother cells (T₅), the main effects of A_D, A_N and P and all of their two-factor interactions were significant at 0.1 or 1% levels. Moreover, the effects of W_D, W_D × A_N and W_D × W_N were also significant at 5% level. The contour lines of each pefcentage of sterile grains based on A_D and A_N were straight and parallel with the line of mean air temperature for three day treatment (fig. la). On the other hand, the contour lines for six and nine day treatments were curve together (fig. 1b-c). 4. At the head emergernce stage (T₆), the effects of A_D, A_N, P, and A_N × P and A_N × P were significant at 0.1% level. However, for three day treatment, A_D and A_N didn't affect the percentage of sterile grains. For six and nine day treatment, A_D and A_N were effective and their contour lines of each percentage of sterile grains were curve (fig. 2b-c). 5. The optimum ranges between A_D and A_N to minimize the percentage of sterile grains for each mean air-temperature were found in all the cases in which the contour lines were curve. The lower the mean air-temperature became, the bigger the optimum range between A_D and A_N became in most cases. Moreover, the optimum combinations of A_D and A_N to minimize the percentage of sterile grains were found to be about 24-20°C in all cases (fig. 1∼2).

収録刊行物

• 日本作物学会紀事

  日本作物学会紀事 39 (4), 401-408, 1970

  日本作物学会

キーワード

• Genetics
• Agronomy and Crop Science
• Food Science

詳細情報

• CRID: 1390001204282669824
• NII論文ID: 110001727132
• NII書誌ID: AN00189888
• DOI: 10.1626/jcs.39.401
• ISSN: 13490990
• ISSN: 00111848
• NDL書誌ID: 8382019
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I8382019
• Web Site: http://www.jstage.jst.go.jp/article/jcs1927/39/4/39_4_401/_pdf
• 本文言語コード: en
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可