植物研究 ›› 2022, Vol. 42 ›› Issue (4): 544-555.doi: 10.7525/j.issn.1673-5102.2022.04.004
龚莉1, 翟伟1, 吕丹1, 张世航2, 戈玉莹1,2, 洪志1,2, 陶冶2()
收稿日期:
2021-04-28
出版日期:
2022-07-20
发布日期:
2022-07-15
通讯作者:
陶冶
E-mail:taoye@ms.xjb.ac.cn
作者简介:
龚莉(1975—),女,硕士,副教授,主要从事植物与分子生物学研究。
基金资助:
Li GONG1, Wei ZHAI1, Dan LÜ1, Shihang ZHANG2, Yuying GE1,2, Zhi HONG1,2, Ye TAO2()
Received:
2021-04-28
Online:
2022-07-20
Published:
2022-07-15
Contact:
Ye TAO
E-mail:taoye@ms.xjb.ac.cn
About author:
GONG Li(1975—),female,master,associate professor,mainly engaged in the study of plant and molecular biology.
Supported by:
摘要:
提高繁殖输出是入侵植物成功入侵的重要机制,但不同生境间繁殖器官性状变异特征尤其是性状权衡关系可能会存在差异。以入侵植物北美车前(Plantago virginica)为研究对象,采集草坪、荒地和林下3个生境的植物花序,探究花穗及花序柄的形态、生物量及其异速生长关系在不同生境间的差异性。结果表明:不同生境北美车前大部分花序形态与生物量指标存在显著差异,草坪和荒地生境花序属细长型,而林下生境则为矮壮型。北美车前繁殖器官不同性状间的异速生长关系既有保守型也有易变型,体现出不同的环境敏感性。不同生境间北美车前繁殖器官资源分配的个体大小依赖关系也存在不一致性。可见,北美车前花序性状及资源分配在不同生境间既存在一定的可塑性也具有相对保守性,这可能是其高入侵能力的重要原因。
中图分类号:
龚莉, 翟伟, 吕丹, 张世航, 戈玉莹, 洪志, 陶冶. 不同生境入侵植物北美车前繁殖器官性状变异与权衡特征[J]. 植物研究, 2022, 42(4): 544-555.
Li GONG, Wei ZHAI, Dan LÜ, Shihang ZHANG, Yuying GE, Zhi HONG, Ye TAO. Variations and Trade-offs in Reproductive Organ Traits of an Invasive Plant Plantago virginica in Different Habitats[J]. Bulletin of Botanical Research, 2022, 42(4): 544-555.
表1
草坪、荒地及林下生境的生态环境特征
生境 Habitat | 环境特征 Environment | 主要伴生种 Main associated species | 北美车前重要值 Important value of P. virginica /% |
---|---|---|---|
草坪 Lawn | 光照强,气温较高,水分条件相对较差 High sunshine,high temperature,and relatively poor soil moisture condition | 狗牙根 Cynodon dactylon | 10 |
荒地 Wasteland | 光照强,气温较高,水分条件相对较差 High sunshine,high temperature,and relatively poor soil moisture condition | 一年蓬、野胡萝卜、野豌豆、狗尾草 Erigeron annuus,Daucus carota, Vicia sepium,Setaria viridis | 12 |
林下 Understory | 光照偏弱,气温相对较低,水分条件相对较好 Relatively low sunshine,low temperature,and good soil moisture condition | 一年蓬,藓类 Erigeron annuus,moss | 30 |
表2
不同生境北美车前繁殖器官形态与生物量的变异系数
生境 Habitat | 变异系数 Coefficients of variation | ||||||||
---|---|---|---|---|---|---|---|---|---|
花穗宽度 Spikelet width | 花穗长度 Spikelet length | 花序柄直径 Peduncle diameter | 花序柄长度 Peduncle length | 花序长度 Inflorescence length | 花穗体积 Spikelet volume | 花穗生物量 Spikelet mass | 花序柄生物量 Peduncle mass | 花序生物量 Inflorescence mass | |
草坪CP | 0.306 | 0.479 | 0.216 | 0.203 | 0.163 | 0.664 | 0.791 | 0.331 | 0.540 |
荒地HD | 0.217 | 0.458 | 0.258 | 0.213 | 0.233 | 0.738 | 0.739 | 0.417 | 0.550 |
林下LX | 0.417 | 0.198 | 0.297 | 0.431 | 0.338 | 0.924 | 0.717 | 0.474 | 0.599 |
表3
不同生境北美车前繁殖器官形态及生物量间的异速生长指数、截距及漂移类型
指标 Index | 生境 Habitat | R2 | P | 异速生长指数 Scaling exponent | 截距 Intercept | 漂移类型 Shift type |
---|---|---|---|---|---|---|
X=PD,Y=PM | 草坪CP | 0.454 | 0.000 | 1.497±0.456a | -1.597±0.053a | |
荒地HD | 0.395 | 0.000 | 1.702±0.413a | -1.554±0.058a | ||
林下LX | 0.291 | 0.008 | 1.545±0.591a | -1.638±0.092a | ||
共同斜率和截距 Common slope and intercept | t=0.496 | 0.806 | 1.601±0.268 | -1.586 | 无漂移 No shift | |
X=PD,Y=PM | 草坪CP | 0.438 | 0.000 | 2.887±0.892a | -1.524±0.104a | |
荒地HD | 0.481 | 0.000 | 2.836±0.636a | -1.527±0.087a | ||
林下LX | 0.597 | 0.000 | 2.135±0.615a | -1.450±0.090a | ||
共同斜率和截距 Common slope and intercept | t=2.960 | 0.240 | 2.626±0.412 | -1.513 | 无漂移 No shift | |
X=PD,Y=IM | 草坪CP | 0.553 | 0.000 | 2.026±0.558a | -1.254±0.064a | |
荒地HD | 0.482 | 0.000 | 2.153±0.483a | -1.237±0.066a | ||
林下LX | 0.512 | 0.000 | 1.847±0.586a | -1.227±0.086a | ||
共同斜率和截距 Common slope and intercept | t=0.649 | 0.734 | 2.035±0.306 | -1.244 | 无漂移 No shift | |
X=SW,Y=SM | 草坪CP | 0.314 | 0.002 | 2.358±0.805a | -2.794±0.400 | |
荒地HD | 0.468 | 0.000 | 2.423±0.551a | -2.656±0.231 | ||
林下LX | 0.622 | 0.000 | 1.341±0.374b | -2.396±0.267 | ||
共同斜率和截距 Common slope and intercept | t=11.232 | 0.004 | 无Null | 无Null | A型漂移 Shift A | |
X=SW,Y=IM | 草坪CP | 0.332 | 0.002 | 1.654±0.557ab | -2.145±0.277 | |
荒地HD | 0.458 | 0.000 | 1.840±0.422a | -2.094±0.177 | ||
林下LX | 0.651 | 0.000 | 1.160±0.311b | -2.045±0.222 | ||
共同斜率和截距 Common slope and intercept | t=6.908 | 0.023 | 无Null | 无Null | A型漂移 Shift A | |
X=SV,Y=SM | 草坪CP | 0.813 | 0.000 | 0.861±0.153a | -1.223±0.106b | |
荒地HD | 0.743 | 0.000 | 0.685±0.108a | -1.141±0.098a | ||
林下LX | 0.665 | 0.000 | 0.613±0.161a | -1.262±0.094b | ||
共同斜率和截距 Common slope and intercept | t=5.798 | 0.055 | 0.728±0.121 | 无Null | D型漂移 Shift D | |
X=SV,Y=IM | 草坪CP | 0.763 | 0.000 | 0.604±0.121a | -1.019±0.084b | |
荒地HD | 0.704 | 0.000 | 0.520±0.088a | -0.947±0.080a | ||
林下LX | 0.687 | 0.000 | 0.531±0.135a | -1.089±0.079b | ||
共同斜率和截距 Common slope and intercept | t=1.412 | 0.490 | 0.549±0.063 | 无Null | D型漂移 Shift D | |
X=PM,Y=SM | 草坪CP | 0.398 | 0.000 | 1.928±0.616a | 1.556±1.034a | |
荒地HD | 0.742 | 0.000 | 1.666±0.264a | 1.063±0.440ab | ||
林下LX | 0.712 | 0.000 | 1.382±0.336a | 0.813±0.565b | ||
共同斜率和截距 Common slope and intercept | t=3.083 | 0.222 | 1.623±0.202 | 无Null | B型漂移 Shift B |
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