Effects of Functional Leaves with Different Leaf Positions on the Formation of Spike Biomass in Two Habitats of Wetland and Dryland

doi:10.6048/j.issn.1001-4330.2023.02.026

Abstract

Abstract:

【Objective】 Effects of functional leaves with different leaf positions on the formation of spike biomass in two habitats of Bosten Lake. 【Methods】 The reed population in bosten Lake, the largest reed producing area in China, was selected as the research object. Five traits of the top three leaves of Ph. australis in wetland and dry land were measured by field sampling method, including leaf length, leaf width, leaf area, leaf biomass and spike biomass. 【Results】 The reed weight in wetland was 2.1 times higher than that in dry land (P<0.05). There was a significant positive correlation between ear biomass and four leaf traits (P<0.05), and the correlation degree varied with different leaf positions. The correlation coefficient between ear biomass and top leaf area of Ph. australis in wetland was the largest (0.920,5), followed by that of top leaf biomass (0.723,7); the correlation coefficient between ear biomass and top three leaf area of Ph. australis in dry land was the largest (0.826,7), and followed by that of top two leaf area (0.801,4). 【Conclusion】 There is a significant correlation between leaf and panicle biomass in different leaf positions. Leaf area and leaf biomass are the key factors affecting panicle biomass. In wetland, the correlation between top leaf and panicle biomass is the highest, while in dry land, the correlation between top three leaf and panicle biomass is the highest.

Key words: Phragmites australis; leaf position; growth plasticity

摘要：

【目的】 研究博斯腾湖两种生境芦苇不同叶位功能叶片对穗生物量形成的影响。【方法】 以我国最大的芦苇产区博斯腾湖的芦苇种群为对象,采用野外典型植株取样方法,测定湿地和旱地两种生境下芦苇顶部三片叶片的叶长、叶宽、叶面积、叶生物量和穗生物量等5个性状,并进行相关分析。【结果】 湿地生境芦苇穂重显著大于旱地(P<0.05),是后者的2.1倍。穗生物量与4个叶片性状存在显著性正相关(P<0.05),并且相关程度随叶位不同而不同,湿地芦苇穗生物量与顶叶面积相关系数(0.920 5)最大,顶叶生物量相关系数(0.723 7)次之;旱地芦苇穗生物量与倒三叶面积相关系数(0.826 7)最大,倒二叶面积相关系数(0.801 4)次之。【结论】 不同叶位的叶片与穗生物量均存在显著的相关性,叶面积和叶生物量是影响穗生物量的关键因素。湿地均以顶叶与穗生物量的相关性最高,旱地均以倒三叶与穗生物量相关性最高。

关键词: 芦苇, 叶位, 生长可塑性

CLC Number:

XU Shun, LI Chengcheng, Nuerali Abulahati, YANG Yunfei, HAN Dayong. Effects of Functional Leaves with Different Leaf Positions on the Formation of Spike Biomass in Two Habitats of Wetland and Dryland[J]. Xinjiang Agricultural Sciences, 2023, 60(2): 472-478.

许顺, 李程程, 努尔阿力·阿布拉哈提, 杨允菲, 韩大勇. 湿地和旱地两种生境芦苇不同叶位功能叶片对穗生物量形成的影响[J]. 新疆农业科学, 2023, 60(2): 472-478.

Figures/Tables 4

Fig.1 Wetland (a) and dryland (b) Phragmites australis populations and functional leaf blade (c) diagram

Table 1 Quantitative characteristics of Phragmites australis in two habitats of Bosten Lake (N=32)

项目 Item	生境 Habitats	均值 Mean	最大值 Max	最小值 Min	标准差 SD	变异系数 CV(%)
叶长Leaf length(cm)
顶叶Top leaf	湿地	29.9 $5 (a) a$	49.00	14.40	9.02	30.12
顶叶Top leaf	旱地	22.2 $5 (a) b$	34.40	9.55	4.77	21.42
倒二叶Second leaf	湿地	33.4 $6 (a) a$	62.30	14.90	10.57	31.59
倒二叶Second leaf	旱地	23.5 $2 (a) b$	34.50	10.20	4.78	20.34
倒三叶Third leaf	湿地	33.3 $4 (a) a$	56.20	16.40	9.77	29.29
倒三叶Third leaf	旱地	24.4 $9 (a) b$	37.50	9.10	6.10	24.9
叶宽Leaf width(cm)
顶叶Top leaf	湿地	1.5 $2 (b) a$	3.30	0.60	0.66	43.35
顶叶Top leaf	旱地	0.9 $5 (b) b$	1.95	0.35	0.31	32.24
倒二叶Second leaf	湿地	1.9 $4 (a) a$	3.75	0.80	0.73	37.59
倒二叶Second leaf	旱地	1.1 $6 (a) b$	1.65	0.45	0.23	19.66
倒三叶Third leaf	湿地	2.1 $8 (a) a$	4.15	1.00	0.75	34.69
倒三叶Third leaf	旱地	1.2 $7 (a) b$	1.85	0.55	0.30	23.36
叶面积Leaf area(cm²)
顶叶Top leaf	湿地	28.2 $1 (b) a$	104.00	5.81	21.27	75.39
顶叶Top leaf	旱地	11.8 $5 (b) b$	27.84	2.23	5.35	45.19
倒二叶Second leaf	湿地	40.13^(ab)a	121.50	7.70	28.61	71.3
倒二叶Second leaf	旱地	15.5 $0 (a) b$	31.71	2.59	6.45	41.65
倒三叶Third leaf	湿地	46.7 $1 (b) a$	170.28	9.60	35.69	76.41
倒三叶Third leaf	旱地	17.8 $4 (a) b$	36.19	2.45	8.01	44.9
叶生物量Leaf biomass(g)
顶叶Top leaf	湿地	0.3 $1 (b) a$	1.04	0.06	0.22	71.28
顶叶Top leaf	旱地	0.2 $2 (b) b$	0.50	0.10	0.10	43.42
倒二叶Second leaf	湿地	0.45^(ab)a	1.49	0.08	0.30	67.31
倒二叶Second leaf	旱地	0.27^(ab)b	0.60	0.10	0.12	43.07
倒三叶Third leaf	湿地	0.5 $0 (a) a$	1.51	0.10	0.31	62.28
倒三叶Third leaf	旱地	0.2 $9 (a) b$	0.60	0.10	0.13	45.81
穗生物量Spike biomass(g)	湿地	5.88^a	15.78	1.18	3.23	54.87
穗生物量Spike biomass(g)	旱地	2.78^b	6.80	0.50	1.30	46.91

Table 1 Quantitative characteristics of Phragmites australis in two habitats of Bosten Lake (N=32)

项目 Item	生境 Habitats	均值 Mean	最大值 Max	最小值 Min	标准差 SD	变异系数 CV(%)
叶长Leaf length(cm)
顶叶Top leaf	湿地	29.9 $5 (a) a$	49.00	14.40	9.02	30.12
顶叶Top leaf	旱地	22.2 $5 (a) b$	34.40	9.55	4.77	21.42
倒二叶Second leaf	湿地	33.4 $6 (a) a$	62.30	14.90	10.57	31.59
倒二叶Second leaf	旱地	23.5 $2 (a) b$	34.50	10.20	4.78	20.34
倒三叶Third leaf	湿地	33.3 $4 (a) a$	56.20	16.40	9.77	29.29
倒三叶Third leaf	旱地	24.4 $9 (a) b$	37.50	9.10	6.10	24.9
叶宽Leaf width(cm)
顶叶Top leaf	湿地	1.5 $2 (b) a$	3.30	0.60	0.66	43.35
顶叶Top leaf	旱地	0.9 $5 (b) b$	1.95	0.35	0.31	32.24
倒二叶Second leaf	湿地	1.9 $4 (a) a$	3.75	0.80	0.73	37.59
倒二叶Second leaf	旱地	1.1 $6 (a) b$	1.65	0.45	0.23	19.66
倒三叶Third leaf	湿地	2.1 $8 (a) a$	4.15	1.00	0.75	34.69
倒三叶Third leaf	旱地	1.2 $7 (a) b$	1.85	0.55	0.30	23.36
叶面积Leaf area(cm²)
顶叶Top leaf	湿地	28.2 $1 (b) a$	104.00	5.81	21.27	75.39
顶叶Top leaf	旱地	11.8 $5 (b) b$	27.84	2.23	5.35	45.19
倒二叶Second leaf	湿地	40.13^(ab)a	121.50	7.70	28.61	71.3
倒二叶Second leaf	旱地	15.5 $0 (a) b$	31.71	2.59	6.45	41.65
倒三叶Third leaf	湿地	46.7 $1 (b) a$	170.28	9.60	35.69	76.41
倒三叶Third leaf	旱地	17.8 $4 (a) b$	36.19	2.45	8.01	44.9
叶生物量Leaf biomass(g)
顶叶Top leaf	湿地	0.3 $1 (b) a$	1.04	0.06	0.22	71.28
顶叶Top leaf	旱地	0.2 $2 (b) b$	0.50	0.10	0.10	43.42
倒二叶Second leaf	湿地	0.45^(ab)a	1.49	0.08	0.30	67.31
倒二叶Second leaf	旱地	0.27^(ab)b	0.60	0.10	0.12	43.07
倒三叶Third leaf	湿地	0.5 $0 (a) a$	1.51	0.10	0.31	62.28
倒三叶Third leaf	旱地	0.2 $9 (a) b$	0.60	0.10	0.13	45.81
穗生物量Spike biomass(g)	湿地	5.88^a	15.78	1.18	3.23	54.87
穗生物量Spike biomass(g)	旱地	2.78^b	6.80	0.50	1.30	46.91

Fig.2 Relationship between leaf morphological index and spike weight of Phragmites australis in two habitats of Bosten Lake Note: In regression equation, yw-wetland reed, yd-dryland reed.The same as below

Fig.3 Allometric growth of leaf and spike biomass at different leaf positions of Phragmites australis in two habitats of Bosten Lake

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