Effect of the number of vegetative branches on the canopy and biomass of roses

doi:10.3969/j.issn.1004-1524.20240899

Acta Agriculturae Zhejiangensis ›› 2026, Vol. 38 ›› Issue (4): 680-686.DOI: 10.3969/j.issn.1004-1524.20240899

• Horticultural Science • Previous Articles Next Articles

Effect of the number of vegetative branches on the canopy and biomass of roses

LI Zhengsheng¹(), YIN Xuanpeng¹, YE Yunyu¹, LI Junyu², WU Hongzhi¹^,^*()

¹ College of Landscape and Horticulture, Yunnan Agricultural University, Kunming 650500, China
² Yunnan Flower Promotion Center, Kunming 650034, China

Received:2024-12-21 Online:2026-04-25 Published:2026-05-08
Contact: WU Hongzhi

Abstract

Abstract:

Vegetative branches promote rose growth by increasing the photosynthetic area, allowing more nutrients to accumulate and transport to commercial flower branches. To investigate the effects of the number of vegetative branches on the canopy and biomass of roses, a randomized complete block design was adopted to quantify the relationship between the number of vegetative branches and the accumulation of biomass in commercial flower branches. The plant height, dry weight, photosynthetically active radiation (PAR) of commercial flower branches and vegetative branches of cut roses were measured under 1-3 vegetative branches treatments. The results showed that the plant height of commercial flower branches treated with three vegetative branches significantly (p<0.05) increased by 87.83% and 45.79% compared with those treated with one or two vegetative branches. The total dry weight of commercial flower branches treated with three vegetative branches significantly increased by 134.69% and 52.40% compared with those treated with one or two vegetative branches. Under the treatment of three vegetative branches, the average PAR utilization rate of vegetative branches was the highest, at 30.46 g·MJ^-1, which was 84.16% higher than the treatment of two vegetative branches and 219.29% higher than the treatment of one vegetative branch. According to the grading evaluation of fresh cut roses, the total number of commercial flower branches under the treatment of three vegetative branches was 54, of which 4 were A-grade, accounting for 57.14% of the total number of A-grade commercial flower branches. There were 10 B-grade branches, accounting for 52.63% of the total number of B-grade commercial flower branches. Under the treatment of three vegetative branches, the commercial flower branches had the highest plant height, total dry weight, PAR utilization rate, and cut flower grade, indicating that vegetative branches have a positive effect on the growth and biomass accumulation of commercial flower branches.

Key words: cut rose, vegetative branch, biomass accumulation, photosynthetically active radiation

CLC Number:

S685.12

LI Zhengsheng, YIN Xuanpeng, YE Yunyu, LI Junyu, WU Hongzhi. Effect of the number of vegetative branches on the canopy and biomass of roses[J]. Acta Agriculturae Zhejiangensis, 2026, 38(4): 680-686.

Figures/Tables 6

References 22

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周期 Period	营养枝数量 Number of vegetative branches	开花枝株高/cm Plant height of commercial flower branches/cm	开花枝叶片干重/g Leaf dry weight of commercial flower branches/g	开花枝总干重/g Total dry weight of commercial flower branches/g
第一周期First period	1	132.50±5.31 b	3.76±0.20 b	6.73±0.30 c
	2	160.53±4.19 b	4.11±0.19 ab	10.44±0.52 b
	3	210.68±7.47 a	6.83±0.26 a	14.98±0.33 a
第二周期Second period	1	95.88±3.13 b	2.41±0.11 b	5.82±0.29 b
	2	151.04±6.12 b	3.99±0.16 ab	9.68±0.44 b
	3	233.53±17.12 a	6.86±0.36 a	17.62±1.11 a
第三周期Third period	1	118.45±1.75 b	2.78±0.11 b	7.35±0.29 c
	2	135.29±2.33 b	3.71±0.15 ab	10.50±0.05 b
	3	207.25±12.35 a	5.56±0.16 a	14.08±0.31 a

周期 Period	营养枝数量 Number of vegetative branches	开花枝株高/cm Plant height of commercial flower branches/cm	开花枝叶片干重/g Leaf dry weight of commercial flower branches/g	开花枝总干重/g Total dry weight of commercial flower branches/g
第一周期First period	1	132.50±5.31 b	3.76±0.20 b	6.73±0.30 c
	2	160.53±4.19 b	4.11±0.19 ab	10.44±0.52 b
	3	210.68±7.47 a	6.83±0.26 a	14.98±0.33 a
第二周期Second period	1	95.88±3.13 b	2.41±0.11 b	5.82±0.29 b
	2	151.04±6.12 b	3.99±0.16 ab	9.68±0.44 b
	3	233.53±17.12 a	6.86±0.36 a	17.62±1.11 a
第三周期Third period	1	118.45±1.75 b	2.78±0.11 b	7.35±0.29 c
	2	135.29±2.33 b	3.71±0.15 ab	10.50±0.05 b
	3	207.25±12.35 a	5.56±0.16 a	14.08±0.31 a

周期 Period	营养枝数量 Number of vegetative branches	冠层顶部入射PAR PAR at the top of canopy	开花枝底部入射PAR PAR at the bottom of commercial flower branches	营养枝底部入射PAR PAR at the bottom of vegetative branches
第一周期First period	1	475.30±6.20 b	108.70±3.20 a	69.63±4.33 a
	2	500.77±4.42 a	107.07±0.81 a	18.57±2.66 b
	3	500.70±2.44 a	111.63±0.49 a	13.70±0.98 b
第二周期Second period	1	458.13±3.29 a	222.83±4.43 a	37.97±0.90 a
	2	508.90±2.54 a	159.50±1.51 b	25.93±0.83 b
	3	438.47±36.53 a	147.87±3.49 b	7.43±1.39 c
第三周期Third period	1	483.60±2.79 a	202.30±1.89 a	38.23±1.60 a
	2	491.33±1.45 a	163.03±0.67 b	25.23±0.34 b
	3	494.50±5.93 a	160.73±4.66 b	16.43±2.14 c

周期 Period	营养枝数量 Number of vegetative branches	冠层顶部入射PAR PAR at the top of canopy	开花枝底部入射PAR PAR at the bottom of commercial flower branches	营养枝底部入射PAR PAR at the bottom of vegetative branches
第一周期First period	1	475.30±6.20 b	108.70±3.20 a	69.63±4.33 a
	2	500.77±4.42 a	107.07±0.81 a	18.57±2.66 b
	3	500.70±2.44 a	111.63±0.49 a	13.70±0.98 b
第二周期Second period	1	458.13±3.29 a	222.83±4.43 a	37.97±0.90 a
	2	508.90±2.54 a	159.50±1.51 b	25.93±0.83 b
	3	438.47±36.53 a	147.87±3.49 b	7.43±1.39 c
第三周期Third period	1	483.60±2.79 a	202.30±1.89 a	38.23±1.60 a
	2	491.33±1.45 a	163.03±0.67 b	25.23±0.34 b
	3	494.50±5.93 a	160.73±4.66 b	16.43±2.14 c

周期 Period	营养枝数量 Number of vegetative branches	开花枝PAR截获率/% PAR interception rate of commercial flower branches/%	营养枝PAR截获率/% PAR interception rate of vegetative branches/%	开花枝PAR利用率/(g·MJ^-1) PAR utilization rate of commercial flower branches/(g·MJ^-1)	营养枝PAR利用率/ (g·MJ^-1) PAR utilization rate of vegetative branches/(g·MJ^-1)
第一周期	1	77.11±0.96 a	35.62±5.81 b	3.16±0.04 c	13.49±0.40 c
First period	2	78.62±0.10 a	82.68±2.39 a	4.42±0.04 b	21.17±0.16 b
	3	77.70±0.09 a	87.73±0.84 a	5.33±0.03 a	36.22±0.16 a
第二周期	1	51.34±1.31 b	82.93±0.75 b	2.95±0.02 b	6.90±0.14 c
Second period	2	68.65±0.41 a	83.73±0.65 b	3.90±0.02 b	10.64±0.10 b
	3	65.72±3.36 a	94.92±1.07 a	11.31±0.87 a	24.98±0.60 a
第三周期	1	58.16±0.54 b	81.11±0.70 c	3.19±0.02 c	8.22±0.08 c
Third period	2	66.82±0.14 a	84.52±0.20 b	5.19±0.01 b	17.81±0.07 b
	3	67.46±1.34 a	89.73±1.50 a	5.36±0.06 a	30.18±0.86 a

Effect of the number of vegetative branches on the canopy and biomass of roses

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