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The partnership between crossing distance and you will seed products germination wasn’t high using either a beneficial linear otherwise quadratic regression design

The partnership between crossing distance and you will seed products germination wasn’t high using either a beneficial linear otherwise quadratic regression design

Syzygium rubicundum

Seed products germination try extremely staggered both in natural (Stacy, Harischandran, and you may Gunatilleke, inside the force) and you may greenhouse setup, stretching over >4 mo. Within a hundred d after planting application de rencontre à l’extérieur (when germination are ?95% complete), new percent of seed germinated was basically average, starting across solutions out of 21 so you can forty-two% regarding sown seed (mean = 36%; pooled across maternal woods; Fig. 3a). Excluding the new unusually highest germination price seen toward nearby-neighbor treatment on Forest # 3 (83.3%), the relationship ranging from crossing range and you can seed products germination is actually nearly identical compared to that for fruits set for so it varieties (Fig. 3a). Together with every investigation affairs, suggest seeds germination wasn’t rather other certainly solutions, nor one of maternal woods (Desk 3A). Excluding the newest solitary outlier don’t change the Aong give-pollination service, height imply seed germination coincided having peak fruits lay within an outcrossing distance of 1–dos km and is nearly just like the imply germination regarding open-pollinated vegetables (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 (Fstep 1,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 development

Due to attrition from lifetime phase to another location, try brands of a few treatment kinds was basically lower to possess prices of seedling survivorship and you can development, having hampered analytical evaluation. Zero extreme outcomes of often crossing medication otherwise maternal forest were located getting either size either in variety (Table 3). Leaving out selfed treatment seedlings out of S. rubicundum (N = 2), this new mean survivorship speed away from seedlings in their first year is high (>80%) for everybody service from both species. For both species, top indicate seedling survivorship coincided for the distant in this-tree treatment.

For S. rubicundum, mean seedling top within step one year postgermination improved which have outcrossing length, peaking within an enthusiastic intermate point of 1–dos km, and shedding a little towards the longest point crosses (Fig. 4a). To own Sh. cordifolia, imply seedling top improved gradually with outcrossing range, peaking during the longest-point get across (Fig. 4b). Both for species, within-procedures adaptation from inside the seedling level are high (Fig. 4). To possess S. rubicundum, version into the seedling height is said, no less than simply, by the staggered vegetables germination.

Collective 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: Fdos,10 = 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.

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