グレインソルガムの稈長の差異が乾物生産および収量に及ぼす影響

スポンサーリンク

概要

• 論文の詳細を見る

• It is very important to determine the optimum planting density giving the highest yield and also to understand the effect of plant height on growth and yield. This experiment was conducted to investigate the effect of the planting density and the plant height on dry matter production and yield performance under three different planting densities with three grain sorghum varieties in 1977. The tall and short line in each variety used for this experiment were isogenic having a common genetic background. The main results obtained are summarized as follows. 1. There were statistically significant differences in tiller number, dry matter weight and leaf area per unit area among planting densities. These characters were larger in high density than in low desnity. No significant differences were shown in tiller number and leaf area between tall and short isogenic line. 2. There were significant differences in NAR and CGR among varieties in t_2 (29, June-11, July) and t_3 (11, July-25, July). The tall lines exceeded significantly the short ones in NAR and CGR (Table 1). 3. With the increase of LAI, NAR decreased, while CGR increased (Figure 1). The best fitting regression of NAR on LAI was curvilinear while that of CGR on LAI was straight. This relationship was common among varieties and lines. But the tall lines showed higher value of NAR and CGR than that of the short ones at the same LAI level. 4. As the grain yield was closely related with CGR and LAI at t_1 (16, June-29, June), t_2 and t_3 (Table 3), the higher yield will be attainable when both CGR and LAI are higher from early growth stage. 5. The positive significant correlation between grain yield and LAI at heading stage was observed. The optimum LAI may occur over higher level obtained in this experiment. 6. The grain yield of tall lines significantly exceeded that of short ones and the grain yield of tall and short lines increased with the increase of planting density (Table 1, 4). The optimum may occur outside the range of density used in the experiment. 7. It has been said that the taller the plant height, the better the distribution of light within a plant population. It may be concluded that the tall line is more advantageous in the efficiency of dry matter production and in getting higher yield than short line, whereas lodging must be noted.

• 日本作物学会の論文
• 1978-12-30

著者

• 氏原 和人

  農林水産省中国農業試験場

• 星野 次汪

  農林水産省中国農業試験場

• 星野 次注

  農林水産省中国農業試験場

• 四方 俊一

  現農業技術研究所生理遺伝部

• 星野 次汪

  農林省中国農業試験場

• 氏原 和人

  農林省中国農業試験場

• 四方 俊一

  農林省中国農業試験場

関連論文

• グレインソルガム栽培における除草剤の選定と使用法-4-アトラジンの処理法の比較
• 畑作物育種試験用除草剤散布機の試作とその利用
• グレインソルガム栽培における除草剤の選定と使用法-3-除草剤散布機の改造
• グレインソルガム栽培における除草剤の選定と使用法-2-播種後及び生育期処理におけるリニュロンとアトラジンの比較
• グレインソルガムの出芽におよぼす土壌の種類と播種深度について
• グレインソルガム花粉の飛散時刻と飛散距離の推定
• グレインソルガム栽培における除草剤の選定と使用法-1-グレインソルガム栽培に適する除草剤の選定
• グレインソルガムにおける播種粒数と出芽との関係
• 品種・穂形質・登熟期からみたグレインソルガムの鳥害に関する研究
• グレインソルガムの稈長の差異が乾物生産および収量に及ぼす影響
• グレインソルガム品種の栽培環境適応性と調査個体数の決定
• 異なる栽培環境下におけるグレインソルガム品種の鳥害とタンニン含量の変異
• 補正バニリン-塩酸法によるソルガム穀粒タンニンの測定値に及ぼす要因の検討〔英文〕
• グレインソルガムの穂発芽性難品種の育成に関する基礎的研究
• 直播栽培のかんしょに対する除草剤パラコートの薬害について

もっと見る 閉じる

スポンサーリンク