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Table 2 List of morphometric traits of P. pinea fruits and seedlings with measurement and units

From: Effects of geoclimatic factors on the variability in Pinus pinea cone, seed, and seedling traits in Turkey native habitats

Morphometric

Abbreviation

Unit

Measurement

Fruit traits

 Cone diameter

CD

mm

Three measurements across the widest portion with a digital caliper

 Cone length

CL

mm

Measured using a digital caliper

 Cone weight

CW

g

3-year-old cones were weighed with precision scale (accuracy of 0.01 g)a

 Seeds cone−1

SN

No.

All seeds per cone were extracted and counted

 Empty seeds

ES

%

ES = (SN-PN) / SN

 Seed yield

SY

%

SY = ((SN × SW) / CW) × 100

 Seed diameter

SD

mm

Three measurements across the widest portion with a digital caliper

 Seed length

SL

mm

Measured using a digital caliper

 Seed weight

SW

g

Weighed with precision scale (accuracy of 0.01 g)b

 Pine nuts cone−1

PN

No.

All extracted seeds per cone were immersed and sinking seeds were counted

 Pine nut weight

PW

g

Five sound seeds and empty seeds were weighed from each cone. Calculated differences average five sound seeds weight and empty seeds weight per cone2.

 Pine nut yield

PY

%

PY = ((PN × PW) / CW) × 100

Seedling traits

 Number of cotyledons

NC

No.

Counted in 175 seedlings (7 seedlings × 5 replications × 5 populations)

 Height

SdL1

cm

Measured by scale at the end of first vegetation period in 175 seedlings

 Height

SdL2

cm

Measured by scale at the end of second vegetation period in 175 seedlings

 Root collar diameter

SdD1

mm

Measured by digital caliper at the end of first vegetation period in 175 seedlings

 Root collar diameter

SdD2

mm

Measured by digital caliper at the end of second vegetation period in 175 seedlings

 Lateral branches

LB1

No.

Counted in 175 seedlings at the end of first vegetation period

 Lateral branches

LB2

No.

Counted in 175 seedlings at the end of second vegetation period

 Bud set

BS

%

Observed in 175 seedlings at the end of second vegetation periodc

  1. a,bIndicate ≈ 20% and 10% moisture content
  2. cNo terminal bud observed at the first year