棉花盛铃期不同器官氮磷化学计量特征及异速关系

doi:10.11963/cs20210069

摘要/Abstract

摘要：

【目的】研究棉花器官水平氮（Nitrogen, N）、磷（Phosphorus, P）化学计量特征及其异速关系,为实现棉花协调生长和资源高效利用奠定理论基础。【方法】选取13个棉花材料（8个陆地棉和5个海岛棉）为研究对象,在盛铃期测定不同器官（根、茎、叶和棉铃）的N和P含量,分析各器官N、P化学计量特征及N-P异速关系的差异。【结果】叶和棉铃的N、P含量显著高于茎和根;棉铃的氮磷质量比（N:P）最低。生殖器官（棉铃）与营养器官（根、茎和叶）N:P化学计量调控存在差异,营养器官N:P与P含量呈显著负相关,而生殖器官N:P与N含量呈显著正相关。不同器官的N-P异速关系存在差异,叶与根中N-P含量呈异速积累,P含量积累速率快于N含量;茎与棉铃中N-P含量呈等速积累。与海岛棉比,陆地棉叶P含量显著较高,N:P显著较低。陆地棉叶N:P与P含量呈极显著负相关关系,海岛棉叶N:P与N、P含量均呈显著负相关关系。陆地棉根、茎和叶的N-P异速指数低于海岛棉,异速常数略高于或与海岛棉相似。【结论】棉花各器官N、P化学计量特征受器官功能分化的影响,N:P化学计量调控机制与N-P异速关系存在器官特异性。

关键词: 棉花; 器官; 氮磷化学计量特征; 异速指数

Abstract:

[Objective] The stoichiometry and allometric relationship of nitrogen (N) and phosphorus (P) at organ level of cotton were studied, to lay a theoretical foundation for coordinated cotton growth and efficient utilization of resources. [Methods] The thirteen cultivated cotton varieties (eight G. hirsutum and five G. barbadense) were selected as the research materials. The contents of N and P in different organs (root, stem, leaf and boll) at full-boll stage were measured, to compare the stoichiometry and allometric relationship of N and P. [Results] N and P contents in leaf and boll were significantly higher than those in stem and root, respectively. The N:P of boll was the lowest. There were differences in N:P stoichiometric regulation between reproductive organ (boll) and vegetative organs (root, stem and leaf). The N:P was negatively correlated with the P content in vegetative organs, but it was positively related to N content in reproductive organ. The N-P allometric relationship differed in different organs. Allometric scaling relationship between N-P was observed in leaf and root, and the accumulation rate of P content was faster than that of N content, and isometric scaling relationship was found in stem and boll. Compared with G. barbadense, P content in G. hirsutum leaf was significantly higher, while N:P was significantly lower. The N:P was extremely significantly negatively related to P content in leaf of G. hirsutum, and N:P was significantly negatively related to both N and P content in leaf of G. barbadense. The N-P allometric scaling of root, stem and leaf of G. hirsutum was lower than those of G. barbadense, while the allometric constant was slightly higher or similar to that of G.barbadense. [Conclusion] The stoichiometric characteristics of N and P in cotton are affected by organ functional differentiation. The relationship between the regulation mechanism of N:P stoichiometry and N-P allometric relationship are organ specific.

Key words: cotton; organs; nitrogen and phosphorus stoichiometry; allometric exponent

李世梅,李自良,冯旭飞,向导,杨明凤,张旺锋,张亚黎. 棉花盛铃期不同器官氮磷化学计量特征及异速关系[J]. 棉花学报, 2022, 34(1): 60-68.

Li Shimei,Li Ziliang,Feng Xufei,Xiang Dao,Yang Mingfeng,Zhang Wangfeng,Zhang Yali. The stoichiometry and allometric relationship of nitrogen and phosphorus in different cotton organs at full-boll stage[J]. Cotton Science, 2022, 34(1): 60-68.

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链接本文: https://journal.cricaas.com.cn/Jweb_mhxb/CN/10.11963/cs20210069

https://journal.cricaas.com.cn/Jweb_mhxb/CN/Y2022/V34/I1/60

图/表 6

表1

图1

图2

附表1

不同棉花试验材料各器官N、P含量和N∶P"

器官 Organ	品种名称 Name of test materials	氮含量 N content/(g·kg^-1)	磷含量 P content/(g·kg^-1)	氮磷比 N:P
根Root	早长1号 Zaochang 1	7.17±0.88	1.54±0.24	4.66
	墨83-90 Mo 83-90	6.05±0.52	0.99±0.04	6.08
	新海2号 Xinhai 2	10.00±0.74	1.90±0.29	5.25
	玉龙29号 Yulong 29	5.66±0.11	1.06±0.21	5.31
	新海33号 Xinhai 33	8.28±1.34	1.98±0.21	4.17
	苏联8905 Sulian 8905	6.46±0.31	1.52±0.19	4.24
	洞684 Dong684	5.63±0.56	0.87±0.19	6.48
	得州-4 Dezhou-4	7.81±0.54	0.96±0.03	8.12
	新陆早80号 Xinluzao 80	6.71±0.52	0.67±0.06	10.00
	7-9	9.15±1.53	1.84±0.16	4.99
	新陆早62号 Xinluzao 62	6.46±0.31	1.22±0.33	5.28
	16566	7.97±0.76	1.52±0.23	5.24
	巴1 Ba 1	9.36±0.38	2.71±0.10	3.45
茎Stem	早长1号 Zaochang 1	11.95±0.52	1.27±0.18	9.40
	墨83-90 Mo 83-90	10.77±0.99	1.16±0.12	9.30
	新海2号 Xinhai 2	14.14±0.25	1.58±0.11	8.93
	玉龙29号 Yulong 29	9.71±0.25	1.09±0.11	8.91
	新海33号 Xinhai 33	10.06±0.35	0.96±0.09	10.51
	苏联8905 Sulian 8905	11.80±0.60	1.28±0.04	9.23
	洞684 Dong684	13.66±1.14	1.33±0.28	10.30
	得州-4 Dezhou-4	18.06±2.54	1.28±0.11	14.10
	新陆早80号 Xinluzao 80	11.45±0.78	0.82±0.20	13.90
	7-9	13.52±0.68	1.84±0.36	7.36
	新陆早62号 Xinluzao 62	12.63±0.12	1.14±0.07	11.12
	16566	17.80±0.30	1.86±0.18	9.56
	巴1 Ba 1	20.34±1.32	2.68±0.18	7.60
叶Leaf	早长1号 Zaochang 1	38.58±1.67	2.52±0.10	15.30
	墨83-90 Mo 83-90	32.71±0.15	2.08±0.07	15.71
	新海2号 Xinhai 2	44.14±2.07	3.00±0.08	14.74
	玉龙29号 Yulong 29	41.37±2.41	2.84±0.20	14.56
	新海33号 Xinhai 33	39.27±1.51	2.57±0.10	15.30
	苏联8905 Sulian 8905	38.31±3.69	3.20±0.02	11.95
	洞684 Dong684	39.50±2.19	2.89±0.06	13.68
	得州-4 Dezhou-4	39.53±0.30	2.52±0.15	15.67
	新陆早80号 Xinluzao 80	34.54±0.74	2.44±0.11	14.17
	7-9	37.10±1.11	3.34±0.08	11.11
	新陆早62号 Xinluzao 62	39.22±1.11	3.38±0.07	11.61
	16566	44.66±0.87	3.65±0.07	12.22
	巴1 Ba 1	45.18±0.94	5.00±0.36	9.03
棉铃Boll	早长1号 Zaochang 1	14.22±0.84	4.46±0.21	3.19
	墨83-90 Mo 83-90	16.27±1.47	3.70±0.23	4.40
	新海2号 Xinhai 2	29.94±1.42	5.00±0.18	5.98
	玉龙29号 Yulong 29	20.03±2.78	4.25±0.27	4.71
	新海33号 Xinhai 33	17.19±1.72	3.58±0.46	4.81
	苏联8905 Sulian 8905	34.79±1.08	4.64±0.22	7.50
	洞684 Dong684	16.98±1.76	3.91±0.17	4.35
	得州-4 Dezhou-4	19.54±2.68	3.48±0.13	5.61
	新陆早80号 Xinluzao 80	15.42±2.52	2.52±0.09	6.13
	7-9	14.64±1.72	3.82±0.49	3.84
	新陆早62号 Xinluzao 62	19.15±0.57	4.18±0.13	4.58
	16566	30.68±3.99	4.82±0.36	6.36
	巴1 Ba 1	24.07±3.47	5.73±0.19	4.20

附表1

表2

表3

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	指标 Index	根Root			茎Stem			叶Leaf			棉铃Boll
	指标 Index	氮含量 N content	磷含量 P content	氮磷比 N:P	氮含量 N content	磷含量 P content	氮磷比 N:P	氮含量 N content	磷含量 P content	氮磷比 N:P	氮含量 N content	磷含量 P content	氮磷比 N:P
所有棉花材料 All tested materials	氮含量 N content	1	0.774^**	-0.351	1	0.799^**	-0.034	1	0.698^**	-0.395	1	0.624^*	0.762^**
所有棉花材料 All tested materials	磷含量 P content		1	-0.780^**		1	-0.601^*		1	-0.910^**		1	-0.017
	氮磷比 N:P			1			1			1			1
海岛棉 G. barbadense	氮含量 N content	1	0.898^*	-0.396	1	0.962^**	-0.399	1	0.993^**	-0.890^*	1	0.703	0.895^*
	磷含量 P content		1	-0.749		1	-0.633		1	-0.936^*		1	0.314
	氮磷比 N:P			1			1			1			1
陆地棉 G. hirsutum	氮含量 N content	1	0.764^*	-0.373	1	0.766^*	-0.196	1	0.776^*	-0.482	1	0.632	0.703
	磷含量 P content		1	-0.921^*		1	-0.754^*		1	-0.902^**		1	-0.092
	氮磷比 N:P			1			1			1			1

	器官 Organ	斜率 α_SMA	95%置信区间 95% CI	截距 β_SMA	95%置信区间95% CI	r²	P
所有棉花材料	根Root	0.49	0.32~0.76	0.80	0.75~0.85	0.55	<0.01
All tested materials	茎Stem	0.74	0.49~1.10	1.03	0.97~1.08	0.61	<0.01
	叶Leaf	0.42	0.27~0.66	1.40	1.30~1.49	0.52	<0.01
	棉铃Boll	1.45	0.88~2.40	0.41	-0.05~0.88	0.39	<0.05
海岛棉	根Root	0.72	0.37~1.43	0.75	0.64~0.86	0.84	<0.05
G. barbadense	茎Stem	0.81	0.45~1.43	0.99	0.94~1.04	0.89	<0.05
	叶Leaf	0.80	0.66~0.97	1.26	1.20~1.33	0.99	<0.01
	棉铃Boll	2.08	0.65~6.62	-0.01	-1.87~1.84	0.39	0.26
陆地棉	根Root	0.40	0.21~0.78	0.82	0.76~0.88	0.50	<0.05
G. hirsutum	茎Stem	0.60	0.32~1.11	1.07	0.98~1.16	0.57	<0.05
	叶Leaf	0.39	0.21~0.72	1.40	1.27~1.53	0.59	<0.05
	棉铃Boll	1.29	0.65~2.55	0.54	-0.05~1.13	0.45	0.07