Effects of indole-3-butyric acid and substrate ratio on rooting of Pinus parviflora Aurea cuttings

doi:10.16178/j.issn.0528-9017.20240729

Abstract

Abstract:

To study the influencing factors of Pinus parviflora cutting, the branch of minitype P. parviflora Aurea was used as material. The effects of cutting types, propagation substrates, varieties and mass concentrations of growth regulators, and application methods of growth regulators on root development were investigated. The result indicated that the best method to promote rooting in cuttings of P. parviflora Aurea was to use semi-woody cuttings treated with 200 mg·L^-1 indole-3-butyric acid(IBA), or to dip the cuttings in 1 500 mg·L^-1 IBA and took cuttings in the substrate mixture of peat soil, yellow soil, and perlite in a mass ratio of 2∶1∶2.

Key words: Pinus parviflora Aurea, cutting propagation, substrate, growth regulator

CLC Number:

S688

SHEN Bo, ZHENG Guoming, WANG Hao, LU Yunfeng, WANG Jian, ZHENG Bigu. Effects of indole-3-butyric acid and substrate ratio on rooting of Pinus parviflora Aurea cuttings[J]. Journal of Zhejiang Agricultural Sciences, 2026, 67(1): 105-109.

Figures/Tables 4

References 12

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插穗类型	生根期/d	生根率/%	平均根长/mm	平均根数	生根力指数
嫩枝	28.3±1.2 b	49.9±6.0 b	8.5±1.0 a	3.2±0.5 b	1.3±0.3 b
半木质化枝条	28.7±1.9 b	56.3±5.5 a	10.7±1.2 a	4.2±0.8 a	1.9±0.4 a
硬枝	33.7±2.4 a	41.4±4.9 c	7.1±0.7 b	2.3±0.7 c	0.7±0.2 c

插穗类型	生根期/d	生根率/%	平均根长/mm	平均根数	生根力指数
嫩枝	28.3±1.2 b	49.9±6.0 b	8.5±1.0 a	3.2±0.5 b	1.3±0.3 b
半木质化枝条	28.7±1.9 b	56.3±5.5 a	10.7±1.2 a	4.2±0.8 a	1.9±0.4 a
硬枝	33.7±2.4 a	41.4±4.9 c	7.1±0.7 b	2.3±0.7 c	0.7±0.2 c

基质类型	生根期/d	生根率/%	平均根长/mm	平均根数	生根力指数
黄心土	31.8±2.1 a	46.0±4.0 c	7.6±0.9 b	3.3±0.5 b	1.3±0.3 b
河沙、黄心土质量比2∶3	30.7±1.2 ab	51.5±5.1 b	9.3±1.0 a	3.9±0.6 a	1.7±0.4 a
泥炭土、黄心土、珍珠岩质量比2∶1∶2	28.7±1.8 b	56.3±6.8 a	10.7±1.2 a	4.2±0.8 a	1.9±0.5 a

基质类型	生根期/d	生根率/%	平均根长/mm	平均根数	生根力指数
黄心土	31.8±2.1 a	46.0±4.0 c	7.6±0.9 b	3.3±0.5 b	1.3±0.3 b
河沙、黄心土质量比2∶3	30.7±1.2 ab	51.5±5.1 b	9.3±1.0 a	3.9±0.6 a	1.7±0.4 a
泥炭土、黄心土、珍珠岩质量比2∶1∶2	28.7±1.8 b	56.3±6.8 a	10.7±1.2 a	4.2±0.8 a	1.9±0.5 a

生长调节剂	质量浓度/(mg·L^-1)	生根期/d	生根率/%	平均根长/mm	平均根数	生根力指数
CK	0	32.2±2.1 a	35.6±4.0 d	6.8±1.1 d	2.7±0.8 b	1.4±0.3 c
NAA	100	29.7±1.5 b	43.2±6.1 c	8.2±1.2 c	3.1±0.8 a	2.3±0.4 b
	200	29.3±1.6 b	48.0±6.7 bc	7.9±1.6 c	3.3±1.2 a	2.6±0.3 b
IBA	100	28.8±1.1 b	53.6±7.4 b	9.4±1.0 b	3.3±0.5 a	3.0±0.3 b
	200	27.0±1.5 c	62.6±4.8 a	9.9±1.3 b	4.0±0.9 a	3.9±0.4 a
ABT₁	100	29.2±1.9 b	51.8±5.7 b	10.1±1.7 b	3.7±0.6 a	3.1±0.5 b
	200	28.3±2.1 bc	54.2±6.3 b	11.0±2.0 a	3.7±0.8 a	3.7±0.6 a