Research Article
Spontaneous Hybridization between Pinus mugo and Pinus sylvestris at the Lithuanian Seaside: A Morphological Survey
Table 5
The species means and standard errors (SE) for the needle traits. P. mugo: 40 needles from 4 trees were studied; P. sylvestris: 240 needles from 24 trees; H M × S: putative hybrids P. mugo × P. sylvestris (group B in Table 2): 110 needles from 11 trees; H S × M: hybrids P. sylvestris × P. mugo (group A; 80 needles from 8 trees).
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ROWABAX and ROWADAX-number of stomata rows on abaxial (curvy) and adaxial (flat) needle surface; STOMR1 and STOMR2: number of stomata per 5 mm interval in row 1 and row 2; STOMEAN: mean of STOMR1 and STOMR2; ROWINDEX: stomata row index = ROWABAX/ROWADAX. |