Correction: Montesinos et al. Phenotyping Almond Orchards for Architectural Traits Influenced by Rootstock Choice. Horticulturae 2021, 7, 159

Error in Figure/Table

In the original publication [1], there was a mistake in Figure 2 as published; it contained incorrect names for the cultivars.

The Correct Figure 2:

Figure 2. Principal component analysis (PCA) of seven non-redundant variables of 30 almond scion–rootstock combinations. (A) Distribution of scion–rootstock combinations classified by rootstock choice as a categorical variable with the first two components (Dim1 and Dim2), with concentration ellipses for each rootstock; (B) Distribution of scion–rootstock combinations classified by cultivar choice as a categorical variable with the first two components (Dim1 and Dim2), with concentration ellipses for each cultivar; (C) Distribution of the seven non-redundant variables with the first two components (Dim1 and Dim2). Contribution of each parameter to the components is colored from blue to red. Data were collected from 2-year-old trees. Refer to Table 1 for abbreviations.

Figure 2. Principal component analysis (PCA) of seven non-redundant variables of 30 almond scion–rootstock combinations. (A) Distribution of scion–rootstock combinations classified by rootstock choice as a categorical variable with the first two components (Dim1 and Dim2), with concentration ellipses for each rootstock; (B) Distribution of scion–rootstock combinations classified by cultivar choice as a categorical variable with the first two components (Dim1 and Dim2), with concentration ellipses for each cultivar; (C) Distribution of the seven non-redundant variables with the first two components (Dim1 and Dim2). Contribution of each parameter to the components is colored from blue to red. Data were collected from 2-year-old trees. Refer to Table 1 for abbreviations.

In the original publication, Tables 2–4 had a superscript “1” in the table foot which does not add any meaning, and therefore has been deleted. There was a mistake in Table 3 as published, it contained incorrect names for the parameters. The correct parameter names are: Nb_IN, Length, IN_L, d_Top, Nb_B, BbyIN, BbyL, B_NbAS, Nb_sB, Nb_mB, Nb_lB, Dist_B, Dist_Down, Dist_Up and Top_SO. The correct table is shown below this paragraph.

Table 3. Pearson’s correlation coefficients of variables comparing 30 almond scion–rootstock combinations, classified by which aspect of almond tree architecture they affect and selected by rootstock influence. Refer to Table 1 for abbreviations.

		Vigor				Branch Quantity							Branch Distribution			Branch Habit
		Nb_IN	Length	IN_L	d_Top	Nb_B	BbyIN	BbyL	B_NbAS	Nb_sB	Nb_mB	Nb_lB	Dist_B	Dist_Down	Dist_Up	Top_SO
Vigor	Nb_IN	1.000
	Length	0.899	1.000
	IN_L	−0.306	0.078	1.000
	d_Top	−0.707	−0.711	0.075	1.000
Branch quantity	Nb_B	0.323	0.246	−0.169	−0.229	1.000
	BbyIN	−0.587	−0.563	0.233	0.472	0.437	1.000
	BbyL	−0.490	−0.591	−0.177	0.445	0.489	0.887	1.000
	B_NbAS	−0.483	−0.485	0.067	0.501	−0.268	0.215	0.165	1.000
Branch vigor	Nb_sB	0.458	0.366	−0.224	−0.351	0.722	0.084	0.148	−0.394	1.000
	Nb_mB	0.257	0.219	−0.161	−0.234	0.801	0.281	0.361	−0.225	0.359	1.000
	Nb_lB	−0.214	−0.220	0.122	0.260	0.397	0.616	0.547	0.211	−0.155	0.186	1.000
Branch distribution	Dist_B	−0.656	−0.672	0.084	0.622	−0.088	0.452	0.409	0.393	−0.124	−0.113	0.113	1.000
	Dist_Down	0.540	0.579	−0.026	−0.480	−0.041	−0.434	−0.398	−0.262	0.031	−0.031	−0.112	−0.796	1.000
	Dist_Up	−0.596	−0.580	0.140	0.602	−0.174	0.362	0.308	0.372	−0.210	−0.190	0.128	0.914	−0.584	1.000
Branch habit	Top_SO	0.121	0.088	−0.045	−0.034	−0.016	−0.010	0.000	−0.072	−0.050	0.035	−0.007	0.022	−0.078	0.030	1.000

Parameters with an r value higher than +0.7 or lower than −0.7 between members of the same category are in bold.

Table 3. Pearson’s correlation coefficients of variables comparing 30 almond scion–rootstock combinations, classified by which aspect of almond tree architecture they affect and selected by rootstock influence. Refer to Table 1 for abbreviations.

		Vigor				Branch Quantity							Branch Distribution			Branch Habit
		Nb_IN	Length	IN_L	d_Top	Nb_B	BbyIN	BbyL	B_NbAS	Nb_sB	Nb_mB	Nb_lB	Dist_B	Dist_Down	Dist_Up	Top_SO
Vigor	Nb_IN	1.000
	Length	0.899	1.000
	IN_L	−0.306	0.078	1.000
	d_Top	−0.707	−0.711	0.075	1.000
Branch quantity	Nb_B	0.323	0.246	−0.169	−0.229	1.000
	BbyIN	−0.587	−0.563	0.233	0.472	0.437	1.000
	BbyL	−0.490	−0.591	−0.177	0.445	0.489	0.887	1.000
	B_NbAS	−0.483	−0.485	0.067	0.501	−0.268	0.215	0.165	1.000
Branch vigor	Nb_sB	0.458	0.366	−0.224	−0.351	0.722	0.084	0.148	−0.394	1.000
	Nb_mB	0.257	0.219	−0.161	−0.234	0.801	0.281	0.361	−0.225	0.359	1.000
	Nb_lB	−0.214	−0.220	0.122	0.260	0.397	0.616	0.547	0.211	−0.155	0.186	1.000
Branch distribution	Dist_B	−0.656	−0.672	0.084	0.622	−0.088	0.452	0.409	0.393	−0.124	−0.113	0.113	1.000
	Dist_Down	0.540	0.579	−0.026	−0.480	−0.041	−0.434	−0.398	−0.262	0.031	−0.031	−0.112	−0.796	1.000
	Dist_Up	−0.596	−0.580	0.140	0.602	−0.174	0.362	0.308	0.372	−0.210	−0.190	0.128	0.914	−0.584	1.000
Branch habit	Top_SO	0.121	0.088	−0.045	−0.034	−0.016	−0.010	0.000	−0.072	−0.050	0.035	−0.007	0.022	−0.078	0.030	1.000

Parameters with an r value higher than +0.7 or lower than −0.7 between members of the same category are in bold.

Text Correction

There was an error in the original publication. We realized that our version had a typing error in the Material and Methods section: “Three categories of shoot length were used to describe branching frequency along the trunk; these categories were short (<10 mm), medium (10–20 mm) and long (>20 mm), denoted as Nb_sB, Nb_mB and Nb_lB, respectively”. This should read: “Three categories of shoot length were used to describe branching frequency along the trunk; these categories were short (<100 mm), medium (100–200 mm) and long (>200 mm), denoted as Nb_sB, Nb_mB and Nb_lB, respectively”. Same changes, therefore, have been made to Table 1.

Table 1. Parameters used to quantify aspects of almond tree architecture and the corresponding formula if parameters were calculated from other traits. Data were measured on the primary growth axis (trunk) or axillary branches of 2-year-old almond trees for 30 scion–rootstock combinations.

Type	Parameter	Formula	Trunk	Branches
Vigor	Number of internodes		Nb_IN
	Length (mm)		Length
	Average lenght of internodes (mm)	Length/Nb_IN	IN_L
	Base diameter (mm)		d_Base	B_dBase
	Apex diameter (mm)		d_Top	B_dTop
Branch quantity	Number of branches		Nb_B	B_NbAS
	Ratio of branches by trunk internodes	Nb_B/Nb_IN	BbyIN
	Ratio of branches by trunk length	Nb_B/Length	BbyL
	Number of short branches (<100 mm)		Nb_sB
	Number of medium branches (100–200 mm)		Nb_mB
	Number of long branches (>200 mm)		Nb_lB
Branch distribution	Mean distribution of branches trought the trunk	SUM(IN)/Nb_IN	Dist_B
	Percentage of branches in the 1st third of the trunk	NbDown/Nb_B	Dist_Down
	Percentage of branches in the 2nd third of the trunk	NbMed/Nb_B	Dist_Med
	Percentage of branches in the 3rd third of the trunk	NbTop/Nb_B	Dist_Up
Branching habit	Number of upright branches measured at the base (<45°)		Base_U
	Number of semiopen branches measured at the base (45–65°)		Base_SO
	Number of open branches measured at the base (>65°)		Base_O
	Number of upright branches measured at the apex (<45°)		Top_U
	Number of semiopen branches measured at the apex (45–65°)		Top_SO
	Number of open branches measured at the apex (>65°)		Top_O

Table 1. Parameters used to quantify aspects of almond tree architecture and the corresponding formula if parameters were calculated from other traits. Data were measured on the primary growth axis (trunk) or axillary branches of 2-year-old almond trees for 30 scion–rootstock combinations.

Type	Parameter	Formula	Trunk	Branches
Vigor	Number of internodes		Nb_IN
	Length (mm)		Length
	Average lenght of internodes (mm)	Length/Nb_IN	IN_L
	Base diameter (mm)		d_Base	B_dBase
	Apex diameter (mm)		d_Top	B_dTop
Branch quantity	Number of branches		Nb_B	B_NbAS
	Ratio of branches by trunk internodes	Nb_B/Nb_IN	BbyIN
	Ratio of branches by trunk length	Nb_B/Length	BbyL
	Number of short branches (<100 mm)		Nb_sB
	Number of medium branches (100–200 mm)		Nb_mB
	Number of long branches (>200 mm)		Nb_lB
Branch distribution	Mean distribution of branches trought the trunk	SUM(IN)/Nb_IN	Dist_B
	Percentage of branches in the 1st third of the trunk	NbDown/Nb_B	Dist_Down
	Percentage of branches in the 2nd third of the trunk	NbMed/Nb_B	Dist_Med
	Percentage of branches in the 3rd third of the trunk	NbTop/Nb_B	Dist_Up
Branching habit	Number of upright branches measured at the base (<45°)		Base_U
	Number of semiopen branches measured at the base (45–65°)		Base_SO
	Number of open branches measured at the base (>65°)		Base_O
	Number of upright branches measured at the apex (<45°)		Top_U
	Number of semiopen branches measured at the apex (45–65°)		Top_SO
	Number of open branches measured at the apex (>65°)		Top_O

The authors apologize for any inconvenience caused and state that the scientific conclusions are unaffected. The original publication has also been updated.