Morpho-physiological performance of Mikania glomerata Spreng. and Mikania laevigata Sch. Bip ex Baker plants under different light conditions

Contin, Daniele Ribeiro; Habermann, Eduardo; Alves, Vani Maria; Martinez, Carlos Alberto

doi:10.1590/2236-8906-74/2020

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Article • Hoehnea 48 • 2021 • https://doi.org/10.1590/2236-8906-74/2020 copy

Morpho-physiological performance of Mikania glomerata Spreng. and Mikania laevigata Sch. Bip ex Baker plants under different light conditions

Authorship SCIMAGO INSTITUTIONS RANKINGS

ABSTRACT

(Morpho-physiological performance of Mikania glomerata Spreng. and Mikania laevigata Sch. Bip ex Baker plants under different light conditions). In tropical and subtropical zones, lianas play important roles in the process of ecological succession. This study aims to evaluate the photosynthetic and morpho-physiological performance between two lianas species from Mikania genus in response to different levels of radiation: full sun (I0), 25% (I25), 50% (I50), and 75% (I75) retention of solar radiation flux. Plants grown under I75 showed a reduced net photosynthetic rate (A). We observed dynamic photoinhibition at I0 during hours of high irradiation and temperature. The highest and lowest leaf chlorophyll content occurred at I75 and I0, respectively, while carotenoids/total chlorophyll and leaf thickness increased under I0. Total dry mass was higher in plants grown at I0 and I25. However, A values and biomass production of Mikania laevigata were higher at I25, while for Mikania glomerata greater biomass accumulation was observed between I0-I50. Therefore, we concluded that M. laevigata and M. glomerata have different morpho-physiological performances under same the radiation conditions.

Keywords:
chlorophyll a fluorescence; gas exchange; irradiation interference; lianas; photosynthesis

Species	Irradiance Interference	90 DAT					150 DAT
Species	Irradiance Interference	AdE	AbE	PP	SP	TL	AdE	AbE	PP	SP	TL
Mikania	I₀	23.27 ± 1.28	21.27 ± 0.63	91.66 ± 2.62	176.35 ± 4.65	312.54 ± 6.08	19.83 ± 0.64	16.47 ± 0.34	72.12 ± 1.38	145.07 ± 2.75	246.20 ± 5.26
glomerata	I₂₅	21.11 ± 1.04	21.40 ± 0.85	90.42 ± 3.58	171.21 ± 5.27	304.14 ± 8.19	17.66 ± 0.52	15.43 ± 0.31	67.30 ± 1.31	137.93 ± 2.66	231.46 ± 4.84
	I₅₀	20.57 ± 1.17	19.99 ± 0.67	94.82 ± 3.02	161.67 ± 5.19	297.06 ± 7.30	17.23 ± 0.44	17.65 ± 0.37	74.61 ± 1.73	137.28 ± 2.81	239.67 ± 5.46
	I₇₅	19.30 ± 0.91	20.41 ± 0.78	87.41 ± 3.91	159.70 ± 7.44	286.82 ± 10.86	15.74 ± 0.52	14.42 ± 0.33	64.47 ± 1.22	143.13 ± 2.90	230.91 ± 4.89
Mikania	I₀	33.75 ± 1.80	19.83 ± 0.82	111.66 ± 2.87	192.25 ± 3.61	357.48 ± 4.55	31.89 ± 0.99	16.66 ± 0.33	79.31 ± 1.43	176.39 ± 2.73	295.49 ± 5.52
laevigata	I₂₅	31.04 ± 1.43	20.30 ± 0.69	87.56 ± 3.23	172.37 ± 3.99	311.27 ± 3.98	30.62 ± 0.81	16.89 ± 0.38	74.83 ± 1.39	144.55 ± 2.55	259.21 ± 5.02
	I₅₀	28.80 ± 1.45	20.08 ± 0.64	90.02 ± 2.44	160.68 ± 4.26	299.58 ± 5.33	29.98 ± 0.63	13.83 ± 0.25	55.77 ± 1.03	129.72 ± 2.34	222.70 ± 4.26
	I₇₅	23.11 ± 1.27	19.09 ± 0.61	82.98 ± 2.46	153.73 ± 4.29	278.90 ± 5.37	22.52 ± 0.82	14.46 ± 0.31	66.51 ± 1.59	139.91 ± 2.54	236.40 ± 4.95
ANOVA	Species	^ P < 0.001	ns	ns	ns	^* * 0.05 > P > 0.001.	^ P < 0.001	^* * 0.05 > P > 0.001.	ns	^ P < 0.001	^ P < 0.001
	Irradiance	^ P < 0.001	ns	^ P < 0.001	^ P < 0.001	^ P < 0.001	^ P < 0.001	^ P < 0.001	^ P < 0.001	^ P < 0.001	^ P < 0.001
	Species x Irradiance	ns	ns	^ P < 0.001	ns	^ P < 0.001	^ P < 0.001	^ P < 0.001	^ P < 0.001	^ P < 0.001	^ P < 0.001

		90 DAT		150 DAT
Species	Irradiance Interference	SI	SD	SI	SD
Mikania	I₀	17.55 ± 0.54	248.68 ± 10.79	18.05 ± 0.32	256 ± 6.48
glomerata	I₂₅	16.75 ± 0.64	248.02 ± 14.19	17.57 ± 0.30	242 ± 6.88
	I₅₀	13.92 ± 0.62	192.46 ± 8.17	16.94 ± 0.31	209 ± 5.40
	I₇₅	12.43 ± 0.47	157.41 ± 6.99	14.90 ± 0.28	154 ± 3.74
Mikania	I₀	12.51 ± 0.38	165.34 ± 5.95	14.41 ± 0.29	176 ± 4.84
laevigata	I₂₅	12.62 ± 0.45	178.57 ± 8.08	14.75 ± 0.32	166 ± 4.98
	I₅₀	12.14 ± 0.50	154.10 ± 5.70	12.69 ± 0.28	141 ± 3.70
	I₇₅	11.16 ± 0.36	136.90 ± 5.22	12.29 ± 0.24	123 ± 2.94
ANOVA	Species	^ P < 0.001	^ P < 0.001	^ P < 0.001	^ P < 0.001
	Irradiance	^ P < 0.001	^ P < 0.001	^ P < 0.001	^ P < 0.001
	Species x Irradiance	^ P < 0.001	^ P < 0.001	^* * 0.05 > P > 0.001.	^ P < 0.001

Month	Days of treatment	Maximum temperature (°C)	Minimum temperature (°C)	Average temperature (°C)	Precipitation (mm)
May	0	25.79	13.31	19.56	6.21
June	30	26.42	13.72	20.07	0.33
July	60	27.43	11.80	19.61	0.00
August	90	29.76	15.41	22.60	2.11
September	120	30.10	15.32	22.72	0.89
October	150	30.91	18.96	24.94	5.56

Parameter	DAT
		60			90			120			150
	S	I	S x I	S	I	S x I	S	I	S x I	S	I	S x I
E	ns	ns	ns	ns	^* * 0.05 > P > 0.001.	ns	^ P < 0.001	^ P < 0.001	ns	ns	^ P < 0.001	^ P < 0.001
gs	ns	^* * 0.05 > P > 0.001.	ns	^* * 0.05 > P > 0.001.	^ P < 0.001	ns	^* * 0.05 > P > 0.001.	^ P < 0.001	ns	^* * 0.05 > P > 0.001.	^ P < 0.001	^* * 0.05 > P > 0.001.
A	ns	^* * 0.05 > P > 0.001.	ns	ns	^ P < 0.001	ns	ns	^ P < 0.001	ns	ns	^ P < 0.001	^* * 0.05 > P > 0.001.
iWUE	ns	ns	ns	^ P < 0.001	ns	ns	^ P < 0.001	^* * 0.05 > P > 0.001.	^ P < 0.001	^ P < 0.001	^ P < 0.001	^* * 0.05 > P > 0.001.
Chlorophyll	^* * 0.05 > P > 0.001.	^ P < 0.001	ns	ns	^ P < 0.001	ns	^* * 0.05 > P > 0.001.	^ P < 0.001	ns	^ P < 0.001	^ P < 0.001	ns
Carotenoids	^* * 0.05 > P > 0.001.	^ P < 0.001	ns	ns	^ P < 0.001	ns	^* * 0.05 > P > 0.001.	^ P < 0.001	ns	^ P < 0.001	^ P < 0.001	ns
Car/Chl	ns	^ P < 0.001	ns	^* * 0.05 > P > 0.001.	^ P < 0.001	ns	^* * 0.05 > P > 0.001.	^ P < 0.001	^* * 0.05 > P > 0.001.	ns	^ P < 0.001	ns

Days of treatments		I0			I25			I50			I75
Days of treatments	T	RH	VPD	T	RH	VPD	T	RH	VPD	T	RH	VPD
60	14.8	69.0	0.5	14.9	69.5	0.5	14.9	70.5	0.5	14.7	71.5	0.5
90	23.9	53.0	1.4	23.1	51.5	1.4	22.1	51.5	1.3	21.2	51.5	1.2
120	28.5	17.7	3.2	27.8	18.7	3.0	26.8	18.2	2.9	25.8	18.0	2.7
150	33.1	31.7	3.5	32.0	33.0	3.2	30.8	31.2	3.0	29.4	31.0	2.8

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[1] 3 Corresponding Author: danicontin@yahoo.com.br