The Photosynthetic-light Response Characteristics of Hybrid Poplar

doi:10.11924/j.issn.1000-6850.casb20200100051

Abstract

Abstract:

Modified rectangular hyperbola model was used to fit the photosynthetic-light response curve of 22 introduced hybrid poplar clones in Ili, to clarify the photosynthetic and physiological characteristics, which could provide a reference for the selection of superior trees. The results showed that: the maximal photosynthetic potential of ‘LX-2’, ‘84-306’, ‘I-262’, ‘D5-20’, ‘D5-9’, ‘DX-08-1’ and ‘DM-9-16’ was strong. ‘CD-2’, ‘D5-20’, ‘D5-9’ and ‘93-8-17’ were more efficient in the conversion of light energy. ‘93-8-18’, ‘108’, ‘CL-6’and ‘LX-6’ had low dark respiration rate, which was beneficial to organic accumulation. The clones with stronger maximum photosynthetic potential were more adaptable to the high light environment in Ili. It is suggested that the clones with small photosynthetic potential should be domesticated for many years to make them as suitable as possible to the local environment and retain the germplasm resources.

Key words: introduction, hybrid poplar, photosynthetic-light response, modified rectangular hyperbola model, net photosynthetic rate

CLC Number:

S722.7

Chen Yong, Gulanr , Wang Xingsheng, Xia Shishu, Cheng Ping, Li Hong. The Photosynthetic-light Response Characteristics of Hybrid Poplar[J]. Chinese Agricultural Science Bulletin, 2021, 37(28): 20-27.

Figures/Tables 3

References 30

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编号	品系	拉丁学名
1	108	Populus euranericana ‘108’
2	84-2	P. deltoids × (P. nigra var. italic × P. russkii) ‘84-2’
3	84-306	P. deltoids × (P. nigra var. italic × P. russkii) ‘84-306’
4	93-8-17	P. deltoids × P. cathayana ‘93-8-17’
5	93-8-18	P. deltoids × P. cathayana ‘93-8-18’
6	CD-2	P. cathayana × P. deltoides ‘CD-2’
7	CL-6	P. cathayana × P. liaoningensis ‘CL-6’
8	D5-9	P. deltoids × P. nigra ‘D5-9’
9	D5-20	P. deltoids × P. nigra ‘D5-20’
10	D5-26	P. deltoids × P. nigra ‘D5-26’
11	DM-9-16	P. deltoids × P. maximowiczii ‘DM-9-16’
12	DS-07-122	P. deltoids × P. suaveolens ‘DS-07-122’
13	DX-08-1	P. deltoids × P. pseudo-simonii ‘DX-08-1’
14	DX-08-8	P. deltoids × P. pseudo-simonii ‘DX-08-8’
15	I-262	P. euranmericana ‘I-262’
16	LD-2	P. liaoningensis × P. deltoides ‘LD-2’
17	LD-3	P. liaoningensis × P. deltoides ‘LD-3’
18	LX-1	P. deltoids × P. pseudo-simonii ‘LX-1’
19	LX-2	P. deltoids × P. pseudo-simonii ‘LX-2’
20	LX-6	P. deltoids × P. pseudo-simonii ‘LX-6’
21	TL-13	P. suaveolens × P. liaoningensis ‘TL-13’
22	中绥12#	P. deltoides × (P. nigra var. thevestina × P. nigra)

编号	品系	拉丁学名
1	108	Populus euranericana ‘108’
2	84-2	P. deltoids × (P. nigra var. italic × P. russkii) ‘84-2’
3	84-306	P. deltoids × (P. nigra var. italic × P. russkii) ‘84-306’
4	93-8-17	P. deltoids × P. cathayana ‘93-8-17’
5	93-8-18	P. deltoids × P. cathayana ‘93-8-18’
6	CD-2	P. cathayana × P. deltoides ‘CD-2’
7	CL-6	P. cathayana × P. liaoningensis ‘CL-6’
8	D5-9	P. deltoids × P. nigra ‘D5-9’
9	D5-20	P. deltoids × P. nigra ‘D5-20’
10	D5-26	P. deltoids × P. nigra ‘D5-26’
11	DM-9-16	P. deltoids × P. maximowiczii ‘DM-9-16’
12	DS-07-122	P. deltoids × P. suaveolens ‘DS-07-122’
13	DX-08-1	P. deltoids × P. pseudo-simonii ‘DX-08-1’
14	DX-08-8	P. deltoids × P. pseudo-simonii ‘DX-08-8’
15	I-262	P. euranmericana ‘I-262’
16	LD-2	P. liaoningensis × P. deltoides ‘LD-2’
17	LD-3	P. liaoningensis × P. deltoides ‘LD-3’
18	LX-1	P. deltoids × P. pseudo-simonii ‘LX-1’
19	LX-2	P. deltoids × P. pseudo-simonii ‘LX-2’
20	LX-6	P. deltoids × P. pseudo-simonii ‘LX-6’
21	TL-13	P. suaveolens × P. liaoningensis ‘TL-13’
22	中绥12#	P. deltoides × (P. nigra var. thevestina × P. nigra)

品系	最大净光合速率P_max/ [μmol/(m²·s)]	表观量子效率AQY	暗呼吸速率R_d/ [μmol/(m²·s)]	光补偿点LCP/ [μmol/(m²·s)]	初始斜率α	决定系数R²
108	25.39	0.0552	1.81	22.12	0.0898	0.9999
84-2	32.16	0.0585	3.16	40.29	0.0861	0.9992
84-306	40.92	0.0608	4.05	53.07	0.0838	0.9998
93-8-17	30.21	0.0617	2.39	27.06	0.0987	0.9997
93-8-18	28.37	0.0553	1.39	16.93	0.0863	0.9983
CD-2	28.78	0.0631	3.28	37.04	0.1040	0.9998
CL-6	22.12	0.0486	1.14	16.16	0.0743	0.9900
D5-20	35.56	0.0622	4.55	55.98	0.0917	1.0000
D5-26	27.13	0.0571	2.36	30.78	0.0945	0.9998
D5-9	34.66	0.0621	3.29	38.94	0.0926	0.9999
DM-9-16	34.04	0.0566	3.28	42.59	0.0849	1.0000
DS-07-122	27.55	0.0569	3.16	39.59	0.0908	1.0000
DX-08-1	34.08	0.0591	2.52	40.37	0.0800	0.9900
DX-08-8	32.31	0.0600	4.05	50.65	0.0897	1.0000
I-262	38.37	0.0606	5.23	70.17	0.0848	1.0000
LD-2	29.78	0.0593	3.51	44.01	0.0931	1.0000
LD-3	32.06	0.0574	3.54	46.76	0.0846	1.0000
LX-1	25.02	0.0523	4.49	69.17	0.0769	1.0000
LX-2	41.40	0.0614	4.97	66.01	0.0843	1.0000
LX-6	23.28	0.0243	1.91	28.15	0.0719	1.0000
TL-13	29.09	0.0559	3.48	45.28	0.0861	1.0000
中绥12#	32.57	0.0555	4.05	57.75	0.0789	0.9988

品系	最大净光合速率P_max/ [μmol/(m²·s)]	表观量子效率AQY	暗呼吸速率R_d/ [μmol/(m²·s)]	光补偿点LCP/ [μmol/(m²·s)]	初始斜率α	决定系数R²
108	25.39	0.0552	1.81	22.12	0.0898	0.9999
84-2	32.16	0.0585	3.16	40.29	0.0861	0.9992
84-306	40.92	0.0608	4.05	53.07	0.0838	0.9998
93-8-17	30.21	0.0617	2.39	27.06	0.0987	0.9997
93-8-18	28.37	0.0553	1.39	16.93	0.0863	0.9983
CD-2	28.78	0.0631	3.28	37.04	0.1040	0.9998
CL-6	22.12	0.0486	1.14	16.16	0.0743	0.9900
D5-20	35.56	0.0622	4.55	55.98	0.0917	1.0000
D5-26	27.13	0.0571	2.36	30.78	0.0945	0.9998
D5-9	34.66	0.0621	3.29	38.94	0.0926	0.9999
DM-9-16	34.04	0.0566	3.28	42.59	0.0849	1.0000
DS-07-122	27.55	0.0569	3.16	39.59	0.0908	1.0000
DX-08-1	34.08	0.0591	2.52	40.37	0.0800	0.9900
DX-08-8	32.31	0.0600	4.05	50.65	0.0897	1.0000
I-262	38.37	0.0606	5.23	70.17	0.0848	1.0000
LD-2	29.78	0.0593	3.51	44.01	0.0931	1.0000
LD-3	32.06	0.0574	3.54	46.76	0.0846	1.0000
LX-1	25.02	0.0523	4.49	69.17	0.0769	1.0000
LX-2	41.40	0.0614	4.97	66.01	0.0843	1.0000
LX-6	23.28	0.0243	1.91	28.15	0.0719	1.0000
TL-13	29.09	0.0559	3.48	45.28	0.0861	1.0000
中绥12#	32.57	0.0555	4.05	57.75	0.0789	0.9988