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STUDIES OF PROMOTIVE EFFECTS OFRICE PLANTS ON GERMINATION AND GROWTH OF PADDY WEEDS

水稻对水稻杂草萌发和生长的促进作用研究

基本信息

批准号：
06806005
负责人：
TAKEUCHI Yasutomo
金额：
$ 1.15万
依托单位：
UTSUNOMIYA UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (C)
财政年份：
1994
资助国家：
日本
起止时间：
1994 至 1995
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-06806005/
关键词：
PADDY WEED MONOCHORIA VAGINALIS SEED GERMINATION GERMINATION STIMULANTS RICE 発芽促進物質

项目摘要

This study was conducted to clarify the effects of rice seeds and seedlings on germination and growth of Monochoria vaginalis, one of the troublesome annual weeds in Japan. When the seeds were harvested in late October, the seeds did not germinate in the light or dark with or without submerged condition because of mechanical restriction of the seed coats and the dormancy of embryo. The seeds were collected in a paddy field in early March. The dormancy of the embryo was broken as a result of exposure to low temperatures during the winter. The seeds were dried and stored 2 to 3 months at 5ﾟC.The seeds germinated in the light under flooded condition, on the other hand they did not germinate in the dark under flooded or nonflooded conditions. When the seed coats were punctured near the radicle, seeds germinated in the light and dark without flooding. Seeds germination was not induced by auxins, gibberellins, cytokinins, ethylene or brassinosteroids in the dark with or without flooding, but … More the germination was induced by ethylene in the light without flooding. Seed germination was also induced by cotylenins in the dark without flooding.Effects of seeds and seedlings of rice on germination and growth of Monochoria vaginalis were studied in a greenhouse and in a paddy field. Rice seeds and seedlings at 2 to 3 leaf-stage promoted the germination and growth of the weed. In contrast, rice seedlings at 4 to 5 leaf-stage did not promote the germination of the weed and on the contrary, inhibited the growth. Seeds of barnyardgrass (Echinochloa oryzicola) and tubers of Cyperus serotinus did not promote the seed germination and growth of Monochoria vaginalis. When the seeds were incubated with rice seeds in petri-dish in the dark with flooding, the germination was induced.Study was conducted to isolate Monochoria vaginalis germination stimulants in rice seeds. Water extracts of rice seeds were subjected to solvent partitioning, ODS,gel filtration and ion-exchange column chromatographies. The stimulant (s) appeared to be highly water soluble cationic compound (s) of relatively low molecular weights. Less

本研究旨在阐明水稻种子和幼苗对日本一年生杂草之一阴道单孢菌（Monochoria vaginalis）萌发和生长的影响。在10月下旬收获种子时，由于种皮的机械限制和胚的休眠，种子在有或无淹没条件下的光照和黑暗条件下都不能发芽。这些种子是三月初在稻田里收集的。由于冬天暴露在低温下，胚胎的休眠被打破了。将种子干燥，在5ºC温度下储存2 - 3个月。在淹水条件下，种子在光照条件下发芽，而在淹水或不淹水条件下，种子在黑暗条件下不发芽。当种皮在胚根附近被刺破时，种子在光照和黑暗中发芽，没有淹水。生长素、赤霉素、细胞分裂素、乙烯和油菜素内酯在有或无淹水的黑暗条件下均不诱导种子萌发，而乙烯在无淹水的光照条件下更能诱导种子萌发。子叶素对种子萌发也有促进作用。在温室和水田条件下，研究了水稻种子和幼苗对阴道单孢菌萌发和生长的影响。水稻种子和幼苗在2 ~ 3叶期促进了杂草的萌发和生长。4 ~ 5叶期水稻幼苗对杂草的萌发没有促进作用，反而抑制了杂草的生长。禾草种子和塞柏块茎对阴道单孢菌种子萌发和生长没有促进作用。将种子与水稻种子一起放在培养皿中，在黑暗和水淹条件下培养，诱导萌发。研究了从水稻种子中分离出刺激萌发的阴道单孢菌。对水稻种子水提物进行溶剂分配、ODS、凝胶过滤和离子交换柱色谱分析。兴奋剂似乎是相对低分子量的高水溶性阳离子化合物。少

项目成果

期刊论文数量（54）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

川口俊ら: "イネ種子に含まれるコナギ種子発芽促進物質" 雑草研究. 40(別I). 192-193 (1995)

Shun Kawaguchi 等人：“水稻种子中含有的促进黄芪种子发芽的物质”杂草研究 40（附录 I）（1995 年）。

DOI：
发表时间：
期刊：
影响因子：
0
作者：
通讯作者：

Shun Kawaguchi, Takao Yokota, Yasutomo Takeuchi, Koichi Yoneyama, Masaru Ogasawara, Tadanobu Maeda, Makoto Konnai: "Monochoria vaginalis seed-germination stimulants contained in rice seeds" Proceeings of 30th Japan Plant Growth Regulation Society. (in Jap

Shun Kawaguchi、Takao Yokota、Yasutomo Takeuchi、Koichi Yoneyama、Masaru Ogasawara、Tadanobu Maeda、Makoto Konnai：“水稻种子中含有的Monochoria vaginalis种子发芽刺激剂”第30届日本植物生长调节学会会议论文集。