The connection ranging from crossing range and you can seeds germination wasn’t extreme using sometimes a great linear or quadratic regression design
Syzygium rubicundum
Seeds germination are extremely staggered both in pure (Stacy, Harischandran, and you will Gunatilleke, from inside the drive) and you will greenhouse settings, stretching over >cuatro mo. At the one hundred d after planting (when germination is ?95% complete), this new rates from seed germinated were average, starting across the providers away from 21 to help you 49% out of sown seed products (suggest = 36%; pooled round the maternal trees; Fig. 3a). Except for the newest surprisingly high germination price observed into the nearest-neighbor medication within Tree number 3 (83.3%), the partnership between crossing length and you can vegetables germination is almost the same to that particular for fruit in for it varieties (Fig. 3a). Also most of the study points, indicate vegetables germination was not significantly different among treatments, neither among maternal woods (Table 3A). Leaving out new single outlier didn’t change the Aong hands-pollination treatments, level indicate seed germination coincided which have top good fresh fruit set at the an enthusiastic outcrossing distance of 1–2 kilometer and you may was nearly identical to the fresh new imply germination out-of 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 you may progress
Because of attrition from existence phase to the next, take to types of some treatment kinds have been low to own quotes regarding seedling survivorship and you can gains, having hampered analytical evaluation. No significant effects of both crossing therapy otherwise maternal tree was basically located for sometimes size either in kinds (Desk step three). Leaving out selfed medication seedlings from S. rubicundum (Letter = 2), new suggest survivorship speed away from seedlings during their first year is actually highest (>80%) for all services regarding one another variety. For types, level suggest seedling survivorship coincided on faraway in this-forest therapy.
To have S. rubicundum, imply seedling level from the 1 yr postgermination improved having outcrossing sites de rencontre pour les strings aux USA distance, peaking during the an enthusiastic intermate point of 1–dos kilometres, and you may dropping a bit into the longest point crosses (Fig. 4a). Getting Sh. cordifolia, indicate seedling peak improved continuously which have outcrossing distance, peaking at longest-distance mix (Fig. 4b). Both for variety, within-treatment adaptation inside the seedling height try highest (Fig. 4). To possess S. rubicundum, type into the seedling level will be explained, at least simply, because of the staggered seed 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: 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, F1,12 = 1.69, P = 0.219), due to the strong near-neighbor effect on cumulative fitness.
