1987 Fiscal Year Final Research Report Summary

Basic study of functional improvement of mulberry organ by growth negulation.

Research Project

Project/Area Number	60560061
Research Category	Grant-in-Aid for General Scientific Research (C)
Allocation Type	Single-year Grants
Research Field	蚕糸学
Research Institution	Faculty of Agriculture, Tokyo University of Agriculture and Technology
Principal Investigator	KUNO Katsuji Facult Agric, Tokyo Univ, Agric,tech, 農学部, 助教授 (70092484)
Project Period (FY)	1985 – 1987
Keywords	Gibberellin / Morphactin / TIBA / Brassinolide / Photosynthesis Dry matter growth / Mineral element / 無機元素 / クロロフィル
Research Abstract	GA promoted early growth of mulberry, but in the later stage, photosynthetic activity of mulberry leaves and dry matter growth was depressed. TIBA induced higher destribution of stomata to upper leaves and inhanced photosynthetic activity. In the case of prunned mulberry, regrowth of new leaves and stems were promoted. Morphactin inhanced the chlorophyll content of mulberry leaves, but malformed leaves such as fused ones at the uppermost region of stem appear ed. In the treated plot, inhancement of Zn content and fall of K content were induced. Brassinolide promoted growth of mulberry leaves and stems in the earlier growth period. It induced inhancement of Zn content and fall of K content of mulberry leaves, too. It is necessary to be careful for the use of morphactin and brassinolide not to induce damage by K deficit and Zn excess.