The partnership anywhere between crossing distance and you may vegetables germination was not tall playing with often an effective linear or quadratic regression model
Syzygium rubicundum
Seed germination is highly staggered both in natural (Stacy, Harischandran, and you can Gunatilleke, in drive) and you will greenhouse options, stretching more >4 mo. From the a hundred d shortly after planting (whenever germination is actually ?95% complete), the percentages away from vegetables germinated was in fact average, starting all over services away from 21 so you’re able to 49% of sown seed products (suggest = 36%; https://datingranking.net/de/land-dating/ pooled across maternal woods; Fig. 3a). Except for new surprisingly highest germination rates observed with the nearby-neighbor therapy at the Tree no. 3 (83.3%), the partnership anywhere between crossing range and you will seed germination is actually almost the same to that particular to have fruits in for so it kinds (Fig. 3a). In addition to all the analysis affairs, mean vegetables germination wasn’t notably additional one of service, neither one of maternal woods (Table 3A). Leaving out brand new solitary outlier don’t change the Aong hands-pollination treatments, peak mean seed germination coincided that have level fruit place within an enthusiastic outcrossing range of just one–dos km and you will try almost identical to the fresh new indicate germination from open-pollinated seed products (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 (F1,9 = 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 growth
On account of attrition from lifestyle phase to another location, attempt types of a few medication classes have been lower for prices out-of seedling survivorship and progress, which may have hampered analytical evaluation. Zero tall effects of both crossing treatment or maternal tree was located having often size either in variety (Dining table step 3). Leaving out selfed procedures seedlings of S. rubicundum (Letter = 2), the brand new imply survivorship speed out of seedlings during their first 12 months are highest (>80%) for everyone service out of one another species. For both varieties, level imply seedling survivorship coincided with the faraway contained in this-forest procedures.
To own S. rubicundum, mean seedling top at step 1 yr postgermination improved having outcrossing range, peaking on an intermate distance of just one–dos kilometres, and losing somewhat into longest length crosses (Fig. 4a). To have Sh. cordifolia, imply seedling top improved gradually having outcrossing length, peaking on longest-length cross (Fig. 4b). For both kinds, within-procedures adaptation when you look at the seedling top try large (Fig. 4). For S. rubicundum, variation from inside the seedling peak can be told me, at the very least to some extent, because of the staggered seeds germination.
Cumulative exercise
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: Fdos,ten = 3.84, P = 0.056). Mean cumulative fitness (relative) was not significantly different between the distant between-forest treatment (mean = 0.07) and all within-forest outcrossed classes combined (mean = 0.24, Fstep 1,twelve = 1.69, P = 0.219), due to the strong near-neighbor effect on cumulative fitness.
