Abiotic Factors Affecting Seed Germination and Early Seedling Emergence of Large Crabgrass (Digitaria sanguinalis)
Abiotic Factors Affecting Seed Germination and Early Seedling Emergence of Large Crabgrass (Digitaria sanguinalis)
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影响马唐种子萌发和早期出苗的非生物因素
DOI：
10.1590/s0100-83582018360100068
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发表时间：
2018-09
期刊：
影响因子：
0.8
通讯作者：
李红红
中科院分区：
文献类型：
--
作者：
王彦辉;马永林;封国君;李红红
摘要：马唐是热带、亚热带和温带地区危害最严重的外来杂草之一。本研究在实验室条件下，对影响马唐种子萌发和早期出苗的非生物因素进行了研究。种子萌发的最适温度为25~35℃，光照12h，黑暗12h。有些种子可以在黑暗中萌发，但光照对萌发有明显的刺激作用。大号马唐种子耐盐度范围为0~160，耐低水势(-0.8 Mpa下发芽率为11%)。PH值对种子萌发无显著影响，在4.0~10.0的较宽pH范围内，种子发芽率均在90%以上。热激对种子萌发有显著影响，在140℃下处理5min，种子萌发受到完全抑制。种子埋深1 cm时出苗率最高，达96%。通过这项研究获得的萌发生物学知识将有助于制定该物种的综合杂草管理策略，并避免它成为经济重要种植区的麻烦杂草。
ABSTRACT: Large crabgrass is one of the worst exotic weed in tropical, subtropical, and temperate regions of the world. In this study, the abiotic factors affecting seed germination and early seedling emergence of large crabgrass were investigated under laboratory conditions. The optimum temperatures of germination occurred at the range from 25 to 35 oC under 12 h light/12 h dark condition. Some seeds could germinate in the dark, but light exposure significantly stimulated the germination. Large crabgrass seed was tolerant to salinity level range of 0 to 160 and low water potential (11% germination at -0.8 MPa). Medium pH had no significant effect on seed germination and more than 90% seeds germination was obtained over a broad pH range from 4.0 to 10.0. Seed germination was significantly influenced by heat-shock and completely inhibited at 140 oC for 5 min. The greatest seedling emergence rate was 96% when seeds were planted at a soil depth of 1 cm. Knowledge of germination biology obtained from this study will be useful in the development of the integrated weed management strategies for this species, and to avoid its establishment as a troublesome weed in economically important cropping regions.
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DOI：
10.1614/ws-04-100r1
发表时间：
2005-02
期刊：
--
影响因子：
--
作者：
Jingkai Zhou;E. Deckard;W. Ahrens
通讯作者：
Jingkai Zhou;E. Deckard;W. Ahrens
盐生植物 Chloris virgata 和糖生植物马唐 (Digitaria sanguinalis) 种子萌发和早期幼苗生长对盐度和温度的响应比较
影响因子：
2.4
作者：
Zhang H, Zhou D, Tian Y, Huang Y, Sun Z
通讯作者：
Zhang H, Zhou D, Tian Y, Huang Y, Sun Z
影响因子：
1.2
作者：
B. Šerá;M. Serý
通讯作者：
B. Šerá;M. Serý
影响因子：
2.5
作者：
Gealy, DR;Wailes, EJ;Chavez, RSC
通讯作者：
Chavez, RSC
影响因子：
1.9
作者：
Hoyle, Jared A.;McElroy, J. Scott;Guertal, Elizabeth A.
通讯作者：
Guertal, Elizabeth A.