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タイトルヨミ
マツ ノ イデンテキ シヒョウ トシテ ノ ヨウチョウ
日本語以外のタイトル
Leaf length as a genetical indicator of Japanese 2-leafed pines
ファイル
言語
日本語
著者
遠山 富太郎
新谷 賢治
内容記述(抄録等)
We supposed that the leaf form of the physiologically favoured part of a tree would serve as a genetical indicator. Considering that the lower part of the crown of a SUGI (Cryptomeria japonica) tree is in such a condition, we made comparisons of the form of leaves obtained from this part among several races and among natural forests. From the results of those comparisons, we proved the existence of "ecocline" in the leaf angle of natural forests in the western part of Honshu.
We assumed that the leaf length of japanese two-leafed pines would be useful as the genetical indicator of this pine. Measuring leaves of all current year branchlet attached to one strong branch located on the upper part of an AKAMATSU (Pinus densiflora) tree, we found that leaves of the outer part of the branch were the longest. Measuring leaves on every part of this tree (in all the four directions and five layers of its crown), we found the longest on the sunny, upper two-fifth part of this crown.
Among 30 trees of five-year-old clone of AKAMATSU and between them and their mother tree, there was no significant difference in the leaf length. So, we concluded that the leaf length of the longest of a japanses two-leafed pine might be recognized as a genetical indicator of them.
Furthermore, we took leaves of several clones of japanese two-leafed pine, measured their length and examined the number and the location of resin ducts seen in their cross sections. Results are shown in Table 5 and 6. The relation between the leaf length and the degree of AKAMATSU-KUROMATSU hybridity (indicated tentatively by the ratio of the number of marginal resin ducts to the total number in the cross section) is not very significant.
掲載誌名
島根農科大学研究報告
11
開始ページ
(A)67
終了ページ
72
ISSN
05598311
発行日
1963-01-31
NCID
AN00108241
出版者
島根農科大学
出版者別表記
The Shimane Agricultural College
資料タイプ
紀要論文
部局
生物資源科学部
備考
A,Bを含む
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