角果碱蓬异型性种子植株生长生理指标的差异研究

doi:10.13866/j.azr.2021.06.18

干旱区研究 ›› 2021, Vol. 38 ›› Issue (6): 1668-1673.doi: 10.13866/j.azr.2021.06.18

角果碱蓬异型性种子植株生长生理指标的差异研究

姜黎^1,²(),赵振勇^1,²,张科^1,²,田长彦^1,²()

1.中国科学院新疆生态与地理研究所,荒漠与绿洲生态国家重点实验室,新疆乌鲁木齐 830011
2.中国科学院大学,北京 100049

收稿日期:2020-10-31 修回日期:2020-12-03 出版日期:2021-11-15 发布日期:2021-11-29
通讯作者: 田长彦
作者简介:姜黎（1980-）,男,博士,副研究员,主要从事植物生理生态. E-mail: jiangli1015@126.com
基金资助:
国家重点研发计划(2018YFE0207200);中国科学院西部之光“一带一路”团队项目(2019-YDYLTD-001)

Comparison of growth and ecophysiological index of plants grown from heteromorphic seeds of Suaeda corniculata

JIANG Li^1,²(),ZHAO Zhenyong^1,²,ZHANG Ke^1,²,TIAN Changyan^1,²()

1. State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, Xinjiang, China
2. University of Chinese Academy of Sciences, Beijing 100039, China

Received:2020-10-31 Revised:2020-12-03 Online:2021-11-15 Published:2021-11-29
Contact: Changyan TIAN

摘要/Abstract

摘要：

采用盆栽试验比较分析在同一栽培条件下,不同居群角果碱蓬（Suaeda corniculata）异型性种子植株的生长、光合色素含量、盐分离子含量和N、P、K含量的差异性,以探讨角果碱蓬适应干旱区盐碱环境的生理生态机制。结果表明：（1）棕色和黑色种子植株在生长、光合色素含量、盐分离子含量和N、P、K含量差异不显著,而新疆和内蒙古角果碱蓬植株在生长发育与生理指标上存在显著性差异。（2）居群类型显著影响植株地上部干重,而不显著影响根部干重;叶绿素a含量、叶绿素b含量、叶绿素a+b含量和类胡萝卜素含量均未显著受到居群类型和植株类型的影响,表明角果碱蓬不同居群的植株光合功能相似。（3）新疆与内蒙古居群的角果碱蓬体内Na⁺、K⁺、Ca²⁺、Cl^-、SO₄^2-离子含量和P、K含量均存在显著差异,表明不同居群的角果碱蓬植株维持渗透的能力存在差异。（4）不同居群角果碱蓬地上部的生长差异,与离子含量和对P、K吸收利用的差异有关,与氮素吸收能力和光合作用无关。因此,不同居群的角果碱蓬异型植株盐分离子吸收系统之间存在一定的协同关系,该协同作用与大量的矿质元素P、K含量密切相关,这些是角果碱蓬适应环境变化的重要生理机制之一。

关键词: 异型性, 矿质元素, 角果碱蓬, 光合色素含量

Abstract:

Growth, photosynthetic pigment content, and mineral nutrient element content of heteromorphic plants of different populations of Suaeda corniculata were measured under similar cultivation conditions to explore the physiological and ecological mechanisms of S. corniculata adapting to saline-alkali environments. The results showed that: (1) growth, photosynthetic pigment content, salt ion content, and N, P, K content of brown and black seeds had similar responses to the same environment, but there were significant differences in growth and physiological and ecological indices for heteromorphic seeds across populations. (2) Aboveground dry weight was significantly affected by population type, while root dry weight was not. The photosynthetic pigment content Cha, Chb, Cha+b, and Car were not significantly affected by population type and plant type, suggesting a similar photosynthetic capacity of plants within the population. (3) There were significant differences in Na⁺, K⁺, Ca²⁺, Cl^-, SO4^2-, P and K contents between Xinjiang and Inner Mongolia populations, indicating that there were differences in osmotic maintenance ability among different populations. (4) The differences in aboveground growth of S. corniculata in different populations were related to ion content and absorption and utilization of P and K, but not to nitrogen absorption capacity and photosynthesis. In conclusion, studies have shown a synergistic relationship between salt ion absorption systems in heteromorphic plants of different populations, which is closely related to mineral element P, K content and may be an important physiological mechanism of S. corniculata adapting to environmental change.

Key words: heteromorphism, mineral elements, Suaeda corniculata, photosynthetic pigment content

姜黎,赵振勇,张科,田长彦. 角果碱蓬异型性种子植株生长生理指标的差异研究[J]. 干旱区研究, 2021, 38(6): 1668-1673.

JIANG Li,ZHAO Zhenyong,ZHANG Ke,TIAN Changyan. Comparison of growth and ecophysiological index of plants grown from heteromorphic seeds of Suaeda corniculata[J]. Arid Zone Research, 2021, 38(6): 1668-1673.

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参数	植株类型	居群类型	植株类型×居群类型
地上部干重	0.50	11.50^***	1.16
根系干重	0.01	0.12	1.06
Cha含量	0.39	3.42	0.03
Cha+b含量	0.39	2.19	0.04
Car含量	0.52	2.53	0.00
Na⁺含量	2.50	51.25^***	0.04
K⁺含量	0.87	121.18^***	0.03
Ca²⁺含量	0.02	4.86^*	0.31
Mg²⁺含量	5.5^*	0.24	3.78
Cl^-含量	1.80	17.75^***	0.02
SO₄^2-含量	7.32^*	11.25^***	0.16
全氮含量	0.39	0.05	2.07
全磷含量	0.42	11.64^**	1.78
全钾含量	1.37	28.51^***	0.49

角果碱蓬异型性种子植株生长生理指标的差异研究

Comparison of growth and ecophysiological index of plants grown from heteromorphic seeds of Suaeda corniculata

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