Effect of Exogenous Plant Hormones on Biomass Allocation of Fraxinus malacophylla Seedlings

doi:10.13466/j.cnki.lyzygl.2021.03.012

Abstract

Abstract:

Taking Fraxinus malacophylla container seedlings as materials,L₉ (3 ⁴) orthogonal experiment method was used to determine the biomass of Fraxinus malacophylla seedlings under three exogenous plant hormones,zeatin (ZT),3-indoleacetic acid (IAA),and gibberellin (GA₃),the relationship between the biomass and its distribution of different seedlings and different hormones was compared and analyzed.The allometric growth relationship between different organs of Fraxinus malacophylla seedlings under different exogenous plant hormone treatments was analyzed using standard spindle regression.The results showed that among different exogenous plant hormones,ZT and IAA dominated the biomass of seedlings,and GA₃ had no significant effect;there was a significant difference in biomass and biomass allocation of different organs between different treatments.Treatment No.4 (ZT 50mg/L,IAA 50mg/L,GA₃ 150 mg/L) was significantly larger than other treatments,but the biomass allocation ratio of each organ was not significant.Treatment No.9 (ZT 75 mg/L,IAA 150 mg/L,GA3150 mg/L) had the smallest total biomass,but it had a higher stem biomass distribution ratio.The allogeneic growth relationship between different organs under different exogenous plant hormone treatments was different,but the overall growth was isokinetic,indicating that the effect of exogenous plant hormones on allometric growth of Fraxinus malacophylla seedlings was not significant.Under the action of different exogenous plant hormones,the biomass of Fraxinus malacophylla seedlings has changed significantly,and the distribution of resources in the environment by the seedlings has not changed significantly.

Key words: Fraxinus malacophylla, exogenous plant hormones, biomass allocation, allometry

CLC Number:

S792.99

DUAN Huachao, ZHENG Xinhua, LI Yanyan, YE Lan, JING Huizhu, DONG Qiong. Effect of Exogenous Plant Hormones on Biomass Allocation of Fraxinus malacophylla Seedlings[J]. FOREST RESOURCES WANAGEMENT, 2021, 0(3): 76-83.

Figures/Tables 9

Tab.1

Tab.2

Tab.3

Tab.4

Fig.1

Tab.5

Tab.6

The standardized major axis regression(SMA) analysis between each organic of F.malacophylla seedings

干重指标	处理	n	R²	P	SAM	95%CI	P_1.0
叶(y)—根(x)	1	18	0.852	0.009	0.5551	0.3330~0.9253	0.032
	2	18	0.394	0.182	0.6139	0.2405~1.5669	0.262
	3	18	0.534	0.099	1.3092	0.5630~3.0445	0.469
	4	18	0.339	0.226	0.7575	0.2873~1.9978	0.527
	5	18	0.074	0.602	1.3879	0.4620~4.1701	0.526
	6	18	0.433	0.155	1.4490	0.5815~3.6108	0.371
	7	18	0.345	0.220	1.2885	0.8711~2.0122	0.084
	8	18	0.324	0.238	0.8977	0.3377~2.3866	0.806
	9	18	0.053	0.660	0.6430	0.2121~1.9492	0.402
	CK	18	0.412	0.169	1.2150	0.4812~3.0674	0.636
叶(y)-茎(x)	1	18	0.664	0.048	1.3532	0.6480~2.8259	0.349
	2	18	0.593	0.073	0.3849	0.1733~0.8548	0.026
	3	18	0.814	0.014	1.5499	0.8781~2.7356	0.104
	4	18	0.307	0.254	1.3603	0.5069~3.6503	0.494
	5	18	0.132	0.478	1.2377	0.4228~3.6236	0.669
	6	18	0.579	0.079	1.2392	0.5516~2.7842	0.542
	7	18	0.206	0.366	1.3530	0.4784~3.8266	0.529
	8	18	0.284	0.277	0.5341	0.1965~2.7842	0.189
	9	18	0.130	0.483	0.7013	0.2393~2.0554	0.481
	CK	18	0.757	0.024	1.6971	0.8946~3.2194	0.088
茎(y)-根(x)	1	18	0.383	0.190	0.4102	0.1596~1.0540	0.061
	2	18	0.584	0.077	1.5950	0.7129~3.5685	0.208
	3	18	0.219	0.349	0.8447	0.3007~2.3731	0.721
	4	18	0.048	0.677	0.5569	0.1833~1.6920	0.273
	5	18	0.001	0.958	1.1214	0.3620~3.4742	0.830
	6	18	0.430	0.157	1.1693	0.4684~2.9190	0.699
	7	18	0.871	0.007	1.6914	1.0464~2.7339	0.038
	8	18	0.736	0.029	1.6809	0.8654~3.2648	0.102
	9	18	0.624	0.062	0.9169	0.4236~1.9846	0.791
	CK	18	0.359	0.208	0.7159	0.2747~1.8656	0.443
地上(y)-地下(x)	1	18	0.746	0.027	0.4798	0.2498~0.9218	0.034
	2	18	0.564	0.085	0.9423	0.4146~2.1414	0.866
	3	18	0.426	0.160	1.0651	0.4255~2.6660	0.876
	4	18	0.094	0.556	0.5896	0.1979~1.7566	0.310
	5	18	0.025	0.765	0.9994	0.3258~1.7566	0.999
	6	18	0.490	0.121	1.2550	0.5232~3.0106	0.556
	7	18	0.073	0.604	1.2615	0.4197~3.7918	0.652
	8	18	0.713	0.034	1.0906	0.5482~2.1697	0.762
	9	18	0.481	0.126	0.6872	0.2847~1.6592	0.347
	CK	18	0.421	0.163	1.0492	0.4179~2.6342	0.906

Tab.6

Tab.7

Tab.8

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生物量	激素	平方和	自由度	均方	F统计量	显著性
总生物量	ZT	29.113	2	14.556	22.403	0.000
	IAA	10.799	2	5.399	8.310	0.001
	GA₃	4.980	2	2.490	3.832	0.029
	e	138.591	155	0.896
	Total	183.483	161
地上生物量	ZT	16.186	2	8.093	18.622	0.000
	IAA	6.160	2	3.080	7.087	0.002
	GA₃	3.121	2	1.560	3.590	0.035
	e	89.119	155	0.575
	Total	114.586	161
根生物量	ZT	2.107	2	1.053	18.115	0.000
	IAA	0.651	2	0.325	5.596	0.007
	GA₃	0.217	2	0.108	1.864	0.166
	e	10.803	155	0.070
	Total	13.778	161
茎生物量	ZT	3.175	2	1.587	13.576	0.000
	IAA	0.407	2	0.203	1.739	0.187
	GA₃	0.228	2	0.114	0.973	0.385
	e	18.389	155	0.119
	Total	22.199	161
叶生物量	ZT	5.892	2	2.946	14.987	0.000
	IAA	3.410	2	1.705	8.674	0.001
	GA₃	1.860	2	0.930	4.732	0.013
	e	43.529	155	0.281
	Total	54.691	161

处理	总	地上	根	茎	叶
1	4.85±0.93ab	3.68±0.58ab	1.17±0.39ab	1.38±0.18b	2.30±0.42a
2	4.48±0.73ab	3.52±0.60ab	0.96±0.16ab	1.33±0.40bc	2.19±0.23a
3	3.55±1.16bc	2.64±0.93bc	0.91±0.32b	1.21±0.35bc	1.43±0.62b
4	5.38±0.75a	4.19±0.63a	1.19±0.25a	1.84±0.25a	2.35±0.45a
5	3.71±0.79b	2.95±0.75bc	0.76±0.21bc	1.50±0.40ab	1.45±0.46b
6	3.85±0.85b	3.16±0.76b	0.69±0.12bc	1.38±0.33b	1.78±0.49ab
7	2.88±0.53c	2.36±0.55bc	0.52±0.09c	0.96±0.27c	1.40±0.60b
8	2.86±0.57c	2.25±0.47c	0.61±0.12c	1.01±0.33bc	1.24±0.20b
9	2.47±0.84c	1.98±0.64c	0.49±0.24c	0.96±0.50c	1.02±0.33b
CK	3.42±1.22bc	2.72±1.04bc	0.70±0.23bc	0.75±0.19c	1.97±0.86ab

测定项目	平方和	自由度	均方	F统计量	显著性
根分配比	0.152	9	0.013	3.189	0.006
茎分配比	0.140	9	0.016	4.729	0.000
叶分配比	0.145	9	0.016	3.400	0.003
地上分配比	0.219	9	0.009	2.578	0.028

干重指标			共同斜率	95%CI	t	p
叶(y)	—	根(x)	0.9560	0.6796~1.3375	11.694	0.200
叶(y)	—	茎(x)	1.2435	0.9188~1.6086	12.661	0.158
茎(y)	—	根(x)	1.1575	0.8253~1.5630	13.257	0.129
地上(y)	—	地下(x)	0.9149	0.6827~1.2063	6.616	0.620

指标			处理
指标			1	2	3	4	5	6	7	8	9	CK
叶(y)	—	根(x)	0.399ab	0.315ab	0.058b	0.427a	0.014b	0.072b	-0.166bc	-0.121bc	-0.342c	0.095b
叶(y)	—	茎(x)	0.527ab	0.474b	0.204bc	0.689a	0.342bc	0.395bc	0.073c	0.074c	-0.078c	0.094c
茎(y)	—	根(x)	0.190ab	0.081b	-0.006bc	0.337a	0.007b	-0.068bc	-0.372c	-0.267c	-0.460c	-0.338c
地上(y)	—	地下(x)	0.603a	0.519ab	0.339ab	0.678a	0.336b	0.332b	0.096c	0.144bc	-0.041c	0.250bc