講演詳細

生理部門[Tree Physiology]

日付	2025年3月21日
開始時刻	ポスター発表
会場名	学術交流会館（第一会議室）
講演番号	PG-18 （学生ポスター賞審査対象）
発表題目	Photosynthetic response of the Larix gmelinii var. japonica affected by exogenous glutathione foliar application. Photosynthetic response of the Larix gmelinii var. japonica affected by exogenous glutathione foliar application.
所属	Okayama University
要旨本文	Improving photosynthetic traits is thought to enhance plant yields. This study aims to evaluate an increase in photosynthetic traits by applying fertilizer, which could have a positive effect on the removal of carbon resource limitations on the seed production of L. gmelinii var. japonica to face increased demand for the hybrid larch F1 (L. gmelinii var. japonica × L. kaempferi). Sixteen saplings of the L. gmelinii var. japonica were assigned to four treatments, fertilized with (1) oxidized glutathione (1000x Kaneka Peptide W2), (2) 5-aminolevulinic acid (1000x ALA-FeSTA), (3) NPK (1600x HYPONeX) and (4) water as a control. No differences were found in photosynthetic rate, tree height, or annual ring width, suggesting no positive effects on photosynthesis between control and each fertilization treatment. Since the fertilizers used in this experiment are known to alleviate oxidative stress, it’s important to evaluate the effects under stress conditions.
著者氏名	○Resa Sri Rahayu1 ・ Wataru Ishizuka2 ・ Ayu Narita3 ・ Rie Miyata3 ・ Hirokazu Kon3 ・ Yuko Miyazaki1
著者所属	1Graduate School of Environmental, Life, Natural Science and Technology, Okayama University ・ 2Hokkaido Research Organization ・ 3Forest Research Department, Forest Research Institute, Hokkaido Research Organization
キーワード	Exogenous glutathione, Foliar fertilizer, Larix gmelinii var. japonica, Photosystem II quantum yield, Photosynthetic rate
Key word	Exogenous glutathione, Foliar fertilizer, Larix gmelinii var. japonica, Photosystem II quantum yield, Photosynthetic rate