Variability of Seed Germination and Dormancy Characteristics and Genetic Analysis of Latvian Avena fatua Populations.
Variability of Seed Germination and Dormancy Characteristics and Genetic Analysis of Latvian Avena fatua Populations.
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DOI：
10.3390/plants10020235
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发表时间：
2021-01-26
期刊：
影响因子：
--
通讯作者：
Ruņģis D
中科院分区：
文献类型：
--
作者：
Ņečajeva J;Bleidere M;Jansone Z;Gailīte A;Ruņģis D
燕麦是一种危害经济的杂草，广泛存在于世界各地的谷物种植区。了解休眠和萌发特性的变化，以及遗传多样性和结构，可以提供关于一个区域内不同种群的额外信息。识别和开发种子萌发行为的潜在指标或标记，将有助于对出苗和种子库动态进行建模。本研究旨在描述拉脱维亚不同居群的种子萌发、休眠和形态特征，并调查当地居群的遗传结构。在三年的时间里，从拉脱维亚不同地区的26到41个地点收集了种子样本。测定了种子形态、初始萌发和打破休眠处理的效果。对18个种子休眠特性不同的拉脱维亚种群的种子进行了基因分型。虽然不同地区的种子在形态上存在差异，但对所选种群的遗传分析表明，种群结构与地理位置无关，这可能反映了红豆杉种子人为扩散的影响。打破休眠处理的效果在不同年份、不同气候带和不同种群之间有所不同，这表明环境影响以及遗传休眠。
Avena fatua is an economically detrimental weed found in cereal growing areas worldwide. Knowledge about the variation of dormancy and germination characteristics, as well as of the genetic diversity and structure can provide additional information about different populations within a region. Identification and development of potential indicators or markers of seed germination behavior, would be useful for modelling emergence and seed bank dynamics. This study aimed to describe the initial germination, dormancy, and morphological characteristics of seeds from different Latvian populations of A. fatua and to investigate the genetic structure of local populations. Seed samples from 26 to 41 locations in different regions of Latvia were collected over three years. Seed morphology, initial germination, and the effect of dormancy-breaking treatments were determined. Seeds from 18 Latvian populations with contrasting seed dormancy characteristics were genotyped. Although morphological differences between seeds from different regions were revealed, genetic analysis of the selected populations indicated that the population structure was not related to geographical location, which probably reflects the impact of anthropogenic dispersal of A. fatua seeds. The effect of dormancy-breaking treatments varied between years, between climatic zones and between populations, indicating environmental influences as well as inherited dormancy.
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影响因子：
6.4
作者：
ADKINS, SW;SIMPSON, GM
通讯作者：
SIMPSON, GM
影响因子：
6.9
作者：
Fennimore, SA;Foley, ME
通讯作者：
Foley, ME
影响因子：
3.8
作者：
Amom, Thoungamba;Tikendra, Leimapokpam;Nongdam, Potshangbam
通讯作者：
Nongdam, Potshangbam
影响因子：
6.6
作者：
Gagkaeva, T. Yu.;Gavrilova, O. P.;Loskutov, I. G.
通讯作者：
Loskutov, I. G.
DOI：
10.1139/b79-212
发表时间：
1979-01-01
期刊：
CANADIAN JOURNAL OF BOTANY-REVUE CANADIENNE DE BOTANIQUE
影响因子：
--
作者：
HSIAO, AI
通讯作者：
HSIAO, AI