IBA EFFICIENCY ON MINI-CUTTING ROOTING FROM TEAK (<i>Tectona grandis</i> Linn F.) CLONES

Badilla, Yorleny; Xavier, Aloisio; Murillo, Olman; Paiva, Haroldo Nogueira de

doi:10.1590/0100-67622016000300011

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Articles • Rev. Árvore 40 (3) • May-Jun 2016 • https://doi.org/10.1590/0100-67622016000300011 copy

IBA EFFICIENCY ON MINI-CUTTING ROOTING FROM TEAK (Tectona grandis Linn F.) CLONES

EFICIÊNCIA DO AIB NO ENRAIZAMENTO DE MINIESTACAS DE CLONES DE TECA (Tectona grandis Linn F.)

Authorship SCIMAGO INSTITUTIONS RANKINGS

ABSTRACT

This study aimed to evaluate IBA efficiency in mini-cuttings rooting based on four Tectona grandis clones. Vegetative samples were collected in a hydroponic mini-clonal hedge in Verde Novo reforestation company at Colider, Mato Grosso. A factorial arrangement (4 x 6) was utilized, based on Carapá, Ipê, GU5 and TB7 clones vs six IBA dosages (0, 1000, 2000, 4000, 8000 and 16000 mg L^-1), in a randomized block design based on three repetitions and 16 mini-cuttings per experimental unit. Cutting evaluations were based on survival and rooting rates after greenhouse conditions, after shadow-house, and at sun exposure, besides, total height, collar diameter, aerial and root biomass were also analyzed. Results registered a 95,4% average survivance rate as well as a 91,8% rooting rate, considered as very high for this tree species. IBA dosages utilization did not produce a significative effect on rooting mini-cuttings from these investigated clones. However, there were different responses among clones, which suggests a genotypic effect.

Keywords:
Vegetative propagation; Clonal forestry; Mini-cutting technique

Table 1 Summary of variance analyses on survival (SCV) and rooting from greenhouse (ENR), as well as survival from shadowhouse (SCS), as a result of six IBA application dosages in four Tectona grandis clones.

Source of variation	df	SCV (%)			ENR (%)			SCS (%)
Source of variation		Mean square	F	P	Mean square	F	P	Mean square	F	P
Clone (C )	3	318,93	8,92	0,0012^** ns, , , e** non-significant to 0,05; significant to 0,05; 0,01 and 0,001 de probability (P), respectively, by de F test.	566,81	10,87	0,0005^*** ns, , , e** non-significant to 0,05; significant to 0,05; 0,01 and 0,001 de probability (P), respectively, by de F test.	363,612	5,59	0,0089^** ns, , , e** non-significant to 0,05; significant to 0,05; 0,01 and 0,001 de probability (P), respectively, by de F test.
Dosage (D)	5	22,38	0,63	0,6827^ns ns, , , e** non-significant to 0,05; significant to 0,05; 0,01 and 0,001 de probability (P), respectively, by de F test.	26,43	0,51	0,7668^ns ns, , , e** non-significant to 0,05; significant to 0,05; 0,01 and 0,001 de probability (P), respectively, by de F test.	57,29	0,88	0,5171^ns ns, , , e** non-significant to 0,05; significant to 0,05; 0,01 and 0,001 de probability (P), respectively, by de F test.
(C ) ^* ns, , , e** non-significant to 0,05; significant to 0,05; 0,01 and 0,001 de probability (P), respectively, by de F test. (D)	15	35,75	0,82	0,6537^ns ns, , , e** non-significant to 0,05; significant to 0,05; 0,01 and 0,001 de probability (P), respectively, by de F test.	52,15	0,67	0,8032^ns ns, , , e** non-significant to 0,05; significant to 0,05; 0,01 and 0,001 de probability (P), respectively, by de F test.	65,01	0,85	0,6203^ns ns, , , e** non-significant to 0,05; significant to 0,05; 0,01 and 0,001 de probability (P), respectively, by de F test.
Mean		95,37			91,78			89,93
CV_exp(%)		6,93			9,64			9,72

Table 2 Summary of variance analyses on height (h) and collar diameter (dc) as a result of six IBA application dosages in four Tectona grandis clones, 55 days after sowing.

Source of variation		h (cm)			dc (mm)
Source of variation	df	Mean square	F	P	Mean square	F	P
Clone (C )	3	81,041	29,29	<,0001^*** ns, , , e** non-significant to 0,05; significant to 0,05; 0,01 and 0,001 de probability (P), respectively, by de F test.	1,107	17,02	<,0001^*** ns, , , e** non-significant to 0,05; significant to 0,05; 0,01 and 0,001 de probability (P), respectively, by de F test.
Dosage (D)	5	8,609	3,11	0,0401^* ns, , , e** non-significant to 0,05; significant to 0,05; 0,01 and 0,001 de probability (P), respectively, by de F test.	0,089	1,37	0,2886^ns ns, , , e** non-significant to 0,05; significant to 0,05; 0,01 and 0,001 de probability (P), respectively, by de F test.
(C) ^* ns, , , e** non-significant to 0,05; significant to 0,05; 0,01 and 0,001 de probability (P), respectively, by de F test. (D)	15	2,767	0,97	0,4988^ns ns, , , e** non-significant to 0,05; significant to 0,05; 0,01 and 0,001 de probability (P), respectively, by de F test.	0,065	0,46	0,9480^ns ns, , , e** non-significant to 0,05; significant to 0,05; 0,01 and 0,001 de probability (P), respectively, by de F test.
Mean		11,77			3,79
CV_exp(%)		14,33			9,89

Table 3 Summary of variance analyses on aerial biomass (PPA) and rot system biomass (PSR), as a result of six IBA application dosages in four Tectona grandis clones, 55 days after sowing.

Source of Variation	df	PPA (g)			PSR (g)
Source of Variation		Mean square	F	P	Mean square	F	P
Clone (C )	2	0,162	5,86	0,0074^* ns, , , e** non-significant to 0,05; significant to 0,05; 0,01 and 0,001 de probability (P), respectively, by de F test.	0,025	3,82	0,0623^ns ns, , , e** non-significant to 0,05; significant to 0,05; 0,01 and 0,001 de probability (P), respectively, by de F test.
Dosage (D)	3	0,071	2,60	0,0693^ns ns, , , e** non-significant to 0,05; significant to 0,05; 0,01 and 0,001 de probability (P), respectively, by de F test.	0,016	2,44	0,0831^ns ns, , , e** non-significant to 0,05; significant to 0,05; 0,01 and 0,001 de probability (P), respectively, by de F test.
(C) ^* ns, , , e** non-significant to 0,05; significant to 0,05; 0,01 and 0,001 de probability (P), respectively, by de F test. (D)	5	0,027	0,65	0,8193^ns ns, , , e** non-significant to 0,05; significant to 0,05; 0,01 and 0,001 de probability (P), respectively, by de F test.	0,006	0,36	0,9829^ns ns, , , e** non-significant to 0,05; significant to 0,05; 0,01 and 0,001 de probability (P), respectively, by de F test.
Mean	15	1,00			1,02
CV_exp(%)		10,56			9,30

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