一年生畑雑草の発生生態に関する研究 : 6. 埋土種子の発芽に及ぼす光の影響

概要

論文の詳細を見る
1. With Chenopodium album and Echinochloa crus-galli var. praticola of which seeds winterecl in soil, germination was entirely dependent on exposure to th.e sunlight and fluorescent light when germination temperature was 20℃, but sensitivity of seeds of Polygonum laputhifolium to the light varied with physlological state of seeds. 2. Very large increase in germination at 20℃ was induced by the light exposures of approxlmately 400 μwatt for 5 minutes incident in the 660.5~690 nm region with Chenopodium album in the 660.5 nm region with Echinochlou crus-galli var, praticola. In Polygom lapathifolium germination was little promoted by the light exposure in the 450~690nm region. 3. In Chenopodium album and EchinochZoa crus-gall var. praticola about 70 % promotion was reached with a minute of the red-light of approximately 40μwatt, and about 30 % germination occurred with as short as 2 seconds when none of seeds germinated at 20℃ in the dark.
日本雑草学会の論文
1977-07-25