イタリアンライグラス個体群における個体の葉面積増加について

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To investigate increasing aspect of leaf area of an individual in Italian Ryegrass population, pot experiment was carried out in the Nagoya University Farm under glasshouse conditions in 1980. The seeds of wasehikari 0.1g (42-45 grains) were sown on September 19 in each 1/2000 are Wagner's pot. The soil was fertilized prior to planting using compound fertilizer 20g per pot, which was included 12% nitrogen, 16% phosphatic fertilizer and 14% potassium chloride. The plants were sampled once a week from October 14 to December 9. The results obtained are as follows : 1) Variation of number of leaves on the main stem was showed narrowly in the earlier growth stage, but broadly in each of the later stage of growth. The plant had many leaves was taller than the plant had small number of leaves in each growth stage. 2) When increase of leaf number of main stem stagnated increase of plant height and fresh weight of plant stagnated increase of plant height and fresh weight of plant stagnated too. But it seems that dry weight of plant is increasing. 3) Number of green leaf reached maximum at the begining of November and then it decreased, but leaf area was increasing favorably in the main stem. Number of green leaf and leaf area was increasing favorably with growth in tillers and LAI reached 15 per pot at the begining of December. 4) The main stem had 5-6 green leaves ordinary with the reason of defoliation from under nodes. It seems that each tillers of lower positions have 5-6 green leaves similarly. 5) An individual that has quick leaf-emergence rate seemes to have a tendency of narrower leaves and of more number of green leaves than that has slow leaf-emergence rate because of later defoliation.
日本作物学会の論文
1981-03-31

イタリアンライグラス個体群における個体の葉面積増加について

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