A tetraploid Echinochloa with plagiotropic tillers: its distribution and habitat in northern part of the main island of Japan.
A tetraploid Echinochloa with plagiotropic tillers: its distribution and habitat in northern part of the main island of Japan.
复制标题
具有斜分蘖的四倍体稗草：其在日本本岛北部的分布和栖息地。
DOI：
10.1111/wbm.12207
复制
发表时间：
2020
影响因子：
1.4
通讯作者：
Nakayama Yuichiro
中科院分区：
文献类型：
--
作者：
Yasuda Kentaro;Mori Kaoru;Nakayama Yuichiro
在日本宫城县的一个水稻堤坝上发现了一种一年生斜向分蘖的稗草（半直立型）。这种半直立型具有四倍体染色体数目（2n= 36），预计为E。稻生菌属然而，它的外观是不同的ofE。稻生菌属为了收集种子样本并明确其分布和栖息地，2014年、2017年和2018年在日本主岛本州岛北方进行了勘探和收集调查。发现了32个被认为是半直立型的种群，并收集了它们的成熟种子。根据染色体计数和生长形态分析的结果，证实它们都是半直立型。这32个种群分布在青森、岩手、秋田、宫城、山形、福岛、新泻等县，分布于稻田、废弃稻田、堤坝、路边、空地、碎石坡等地。我们的调查表明，半直立型生长在潮湿和干燥的干扰栖息地在次生演替的早期阶段，包括稻田在日本主岛的北方的一部分。
An annualEchinochloawith plagiotropic tillers (semi‐erect type) was found on a paddy levee in Miyagi prefecture in Japan. This semi‐erect type had tetraploid chromosome numbers (2n= 36) and would be expected to beE. oryzicola. However, its appearance was distinct from that ofE. oryzicola. To collect seed samples and clarify its distribution and habitat, exploration and collection surveys were carried out in the northern part of Honshu, the main island of Japan in 2014, 2017, and 2018. Thirty‐two populations that were assumed to be the semi‐erect type were found and their mature seeds were collected. Based on the results of chromosome counts and growth form analyses, all of them were confirmed to be the semi‐erect type. The 32 populations were distributed in the prefectures of Aomori, Iwate, Akita, Miyagi, Yamagata, Fukushima, and Niigata, and located in paddy fields, abandoned paddy fields, paddy levees, roadsides, vacant land, and scree slopes. Our surveys indicated that the semi‐erect type grew in wet and dry disturbed habitats at an early stage of secondary succession including paddy fields in the northern part of the main island of Japan.