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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
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