温州蜜柑の二重接に就て〔第1報〕
スポンサーリンク
概要
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1. In September of 1939 the scions of a Satsuma oran, e strain are double-grafted on the scion part of those previously (1937) had been grafted by three different s'rains of Satsuma orange, yudzu and tachibana on seedling stocks of trifoliate orange. 2. The growth of the top scion part have been influenced by growing characters, weak or vigorous. of the intermediate stocks. The effects are found in the diameters of stems, and volumes of crowns as measured in the top scion part as well as in the stem diameters of intermediate or stock parts. 3. The tops grafted on the same strain intermediate stocks are compared with those on the vigorous strain (Tanikawa) intermediate stocks. The former surpassed the latter at the end of. this investigation, when they are ten years old, though they had been inferior in the beginning. 4. Though the stem diameter of intermediate stock of yudzu had been the largest of all, before and several years after the graftin of top scion parts, its growth declined gradually, and consequently showed the minimum diameter of all in both intermediate part and stock. The volume of the crown was one ninth of that with the same intermediate part. 5. In the tachibana grafted plot at the beginning, the diameter of intermediate stock had been smallest, and the scion part the same amont the other Satsuma strain plots. Afterwards, its growth out-ran the others, and consequently, gained the neat rank to the Tanikawa plot. When it is ten years old, its crown volume and stem diameter are nearly same to those of the latter plot. 6. The connections were smooth and gradually more slender to the top in three Satsuma plots. In yudzu plot, stems of the tops were suddenly small. In tachibana plot, both were same or slightly larger in the top stems, and the connected parts smelled a little.