(5)倍数性黒松の形態学的特性(1) : 林木の育種及其基礎的研究(7)

概要

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1) Polyploid pine tree (Pinus Thunbergii PARL.) was maked up with colchine treatment (0.05〜1.0% water solutiom, dropping once a day, 4〜5 times), and they are now 8 years old. We studied chiefly the outer and inner morphological characters on 7 individuals and compared with normal 2n pine tree. 2) On polyploid pine trees length growth are 1/7〜1/2% of normal 2n pine tree, and it showed a. 2.2-19.4 cm in a year. 3) Leaf colour changed to shad colour"Chrominum Green". Then, two needle leaves among short shoots generally combined or healed with one another, and we feel in them probability. 4) Length, width and thickness of leaf are several 58,135,125% of normal 2n pine tree. 5) The cells of tissue of leaf are corpulent and ununiform, but there is no clear, parallel correlation between them. 6) Thickness of epidermis and hypodermis are severally 122,94% of normal 2n pine tree. 7) Size of Stomata are 119% of normal 2n pine tree. 8) Each of needle pine leaves has 0〜4 resin canals in mesophyll, but it has differences among individuals, and a certain have it not at all. 9) In width, thickness of central cylinder, 131% of normal 2n pine tree are showed. 10) Polyploid pine trees show too the common characters of polyploid plants, though the grade of variations differ in individuals. The fact of degenerate tendency of resin canal in leaves of polyploid pine trees is a great characteristic.
一般社団法人日本森林学会の論文
1949-02-28