Syzygium rubicundum

Seeds germination are extremely staggered in natural (Stacy, Harischandran, and you will Gunatilleke, inside force) and you will greenhouse options, extending more than >4 mo. Within one hundred d just after planting (when germination is actually ?95% complete), new percentages off seeds germinated was average, starting across solutions from 21 so you’re able to forty-two% out of sown seed (imply = 36%; pooled across the maternal trees; Fig. 3a). Except for brand new oddly high germination rate seen on nearby-neighbor medication from the Tree no. 3 (83.3%), the relationship anywhere between crossing length and seed germination was nearly similar to that particular to possess fruits set for so it varieties (Fig. 3a). Together with the studies activities, mean seed germination was not rather other one of services, neither among maternal woods (Desk 3A). Excluding the unmarried outlier failed to replace the Aong give-pollination providers, top suggest seeds germination coincided with level fresh fruit set at an enthusiastic outcrossing length of 1–dos km and you can try almost same as this new indicate germination out-of open-pollinated seeds (Fig. 3a).

Shorea cordifolia

Germination of experimental seeds was rapid and fairly even across treatments (mean = 62%; range: 55–72% at 45 d; Fig. 3b). A steady increase in mean seed germination with outcrossing distance is apparent, but not significant (F_{step one,nine} = 1.02, P < 0.34, R 2 = 0.40; Fig. 3b). Mean seed germination was not significantly different among treatments, nor among maternal trees (Table 3B). Interestingly, mean seed germination for all hand-pollination treatments exceeded that of open-pollinated seeds (Fig. 3b). While the reason for this observation is not known, the latter estimates were based on much larger sample sizes and therefore may be more robust.

Seedling survivorship and you may development

Due to attrition in one lifetime phase to another, try sizes of a few cures kinds have been reasonable to possess rates of seedling survivorship and you may progress, that have hampered statistical examination. Zero high outcomes of possibly crossing treatment otherwise maternal forest was indeed receive for sometimes measure in both varieties (Table step three). Excluding selfed therapy seedlings away from S. rubicundum (Letter = 2), brand new suggest survivorship rates from seedlings in their first 12 months is higher (>80%) for everyone solutions out-of both varieties. For both species, height indicate seedling survivorship coincided on the distant within this-forest medication.

To own S. rubicundum, imply seedling level from the 1 yr postgermination increased that have outcrossing length, peaking at the a keen intermate point of 1–dos kilometres, and you can dropping a little toward longest length crosses (Fig. 4a). Having Sh. cordifolia, indicate seedling peak increased steadily which have outcrossing length, peaking at the longest-point mix (Fig. 4b). For both species, within-cures variation from inside the seedling top is actually higher (Fig. 4). Getting S. rubicundum, version within the seedling height might be informed me, at the very least to some extent, by staggered seed products germination.

Cumulative physical fitness

For each species, the cumulative fitness of each treatment class was calculated as the standardized product of the four fitness measures (see Fig. 5). For both species, the distribution of cumulative fitness with respect to crossing distance was similar to that for fruit set (Fig. 5). For S. rubicundum, variation in cumulative fitness among treatments was highly significant (Table 3A); mean cumulative fitness of the distant within-forest treatment was 4–25 times the means for other hand-pollination treatments and twice that of open-pollinated flowers. The relationship between outcrossing distance and cumulative fitness was nearly significant (quadratic regression: F_2,10 = 3.84, P = 0.056). Mean cumulative fitness (relative) was not significantly different between the distant https://datingranking.net/fr/sites-de-rencontres-militaires/ between-forest treatment (mean = 0.07) and all within-forest outcrossed classes combined (mean = 0.24, F_{step one,12} = 1.69, P = 0.219), due to the strong near-neighbor effect on cumulative fitness.