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ID 130
Eprint ID
130
フルテキストURL
タイトル(別表記)
Morphological Features in Interspecific Hybrids between Pinus densiflora and P. Thunbergii. (I). : Comparision of External Features and Interior Tissues of Needle.
著者
岩村 通正 岡山大学
抄録
Investigations have been conducted by several workers into interspecific hybrids among Pinus densiflora SIEB. et Zucc. (Japanese red pine) and Pinus Thunbergii PARL. (Japanese black pine), but there seems to be many basic problems in morphology yet to be settled. In the present paper, the author attempted to tentatively clasify into five types pure Pinus densiflora, pure Pinus Thunbergii and their hybrids by major external features; (1) Akamatsu (Red pin-e): distinguished as pure red pine by observation of it's needles, winter buds and bark. (2) Ai-akamatsu (Hybrid red pine): recognized as partaking of black pine characteristics by observation of above three external features. (3) Ai-matsu (Hybrid pine): judged as an intermediate type between red pine and black pine. (4) Ai-guromatsu (Hybrid black pine): recognized as the contrary type of (2). (5) Kuromatsu (Black pine): distinguished as pure black pine by the same means. Above distinctions were standardized by macroscopic observation and three characteristics were respectively determined by following points; that is, each of the characteristics of pure red pine is +2, of pure back pine -2, and of intermediate type +1.0, and -1 according to their grades. Then pure races and hybrids are graded by these total points which are figured out by above mentioned methods of marking, as following: (1) +6・・・Red pine (2) (+5)~(+3)・・・Hybrid red pine (3) (+2) ~(-2)・・・Hybrid pine (4) (-3) ~(-5)・・・Hybrid black pine (5) - 6・・・Black pine Sample trees used in this experiment are fifteen in number and they are shown in Table 1. These sample trees grow in the experimental forest (about 0.16 ha.) of Handayama University Forest (the northern part of Okayama city). In the present paper, the relationship between the external characteristics (especially; needle, winterbud and bark) of pure and hybrid pine and the internal structure of their needles are discussed. The microscopic observation on the internal structure of their needles was undertaken to analyze distinctions of tissue, as described in Fig. 1, 2. Considered from the experimental results, it seems most reasonable to conclude that individuals judged as hybrid of Pinus densiflora SIEB. et ZUCC. and P. Thumbergii PARL. by observation of external features may also have the microscopic characteristics in the internal structure of their needles as hybrid of those two species.
キーワード
アカマツ・クロマツ種間雑種
形態学
針葉
発行日
1961
出版物タイトル
岡山大学農学部学術報告
出版物タイトル(別表記)
Scientific Reports of the Faculty of Agriculture Okayama University
17巻
1号
出版者
岡山大学農学部
出版者(別表記)
Faculty of Agriculture, Okayama University
開始ページ
19
終了ページ
25
ISSN
0474-0254
NCID
AN00033029
資料タイプ
紀要論文
言語
Japanese
論文のバージョン
publisher
査読
無し
Eprints Journal Name
srfa