The Relationship between Pollen Load and Fruit Maturation and the Effect of Pollen Load on Offspring Vigor in Cucurbita pepo

@article{Winsor1987TheRB,
  title={The Relationship between Pollen Load and Fruit Maturation and the Effect of Pollen Load on Offspring Vigor in Cucurbita pepo},
  author={J. Winsor and L. E. Davis and A. Stephenson},
  journal={The American Naturalist},
  year={1987},
  volume={129},
  pages={643 - 656}
}
In order to examine the relationships among the size of the pollen load, the number of seeds per fruit, the probability of fruit maturation, and offspring quality, we experimentally varied, by hand-pollinations, the number of pollen grains deposited onto stigmas of the common zucchini squash (Cucurbita pepo). We found that differences in the size of the pollen load (low, medium, and high) translate into significant differences in the number of seeds per fruit; moreover, fruits with high seed… Expand
Effects of pollen-load on fruit yield, seed production and germination in melons, cucumbers and squash
TLDR
Data are contrary to the theory that microgametophyte competition has a positive effect on the vigour of the progeny, and the lower germinability of melon seeds obtained by passive pollination may be due to the fact that pollination without insect or human interference yielded only a few seeds per fruit, and, under such circumstances, there may be a survival advantage for slow and distributed germination. Expand
The effects of pollen load size and donor diversity on pollen performance, selective abortion, and progeny vigor in Mirabilis jalapa.
TLDR
The data suggest that pollen performance is influenced by pollen competitive environment, and both the genetic diversity of the pollen load and number of competing pollen tubes are important determinants of seed/fruit abortion. Expand
The effect of pollen load and pollen grain competition on fertilization success and progeny performance inFagopyrum esculentum
TLDR
Evidence is found that pollen grain competition can occur in buckwheat with benefits for progeny performance, and seedlings produced from high pollen load were larger than those from low pollen load. Expand
Effects of soil nitrogen on pollen production, pollen grain size, and pollen performance in Cucurbita pepo (Cucurbitaceae)
TLDR
It is concluded that spatial heterogeneity in soil nitrogen can influence the paternity of seeds in a plant population through the female function. Expand
Effects of pollen load size and composition on pollen donor performance in wild radish, Raphanus sativus (Brassicaceae).
TLDR
A greenhouse experiment in which both pollen load size and composition were varied in wild radish, Raphanus sativus, and the paternity of seeds were examined, suggesting that differential performance of pollen donors can occur at pollen load sizes that are likely to occur in field populations. Expand
Pollen Deposition, Pollen Tube Growth, Seed Production, and Seedling Performance in Natural Populations of Clarkia unguiculata (Onagraceae)
TLDR
Seed production in this experiment was dependent on pollen load sizes, even though the number of seeds produced was well below the number typically recorded for this species, and measures of seedling vigor were not affected by pollen load size. Expand
Maternal Plant Responses to High Pollen Loads
TLDR
The results suggest that plants that received a high pollen load were able to allocate resources to high seed production of early flowers and to increased pollen dispersal of late flowers, thereby achieving higher total fitness than plants that receive a lower pollen load. Expand
Effects of pollen competition on the reproductive performance in cucurbit hybrids (Cucurbitaceae): F1 and backcross generations
TLDR
A positive correlation between the size of the pollen load and the vigor of Cucurbita F1 and backcross progeny is demonstrated, indicating that the progeny produced from large pollen loads outperformed the progenny produced from small pollen loads for several measures of vigor. Expand
Pollen load size, reproductive success, and progeny kinship of naturally pollinated flowers of the tropical dry forest tree Pachira quinata (Bombacaceae).
TLDR
It is demonstrated that fruit and seed production are directly related to the number of microgametophytes per pistil in natural populations of P. quinata. Expand
EFFECTS OF POLLINATION INTENSITY IN CAMPSIS RADICANS.
  • R. Bertin
  • Biology, Medicine
  • American journal of botany
  • 1990
TLDR
Seeds from heavy pollinations emerged better than seeds from light pollinations, but did not differ in speed of germination or in the performance of seedlings up to 126 days, probably due to differing intensities of pollen tube competition. Expand
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 52 REFERENCES
SOME CONSEQUENCES OF RASPBERRY POLLEN DILUTION FOR ITS GERMINATION AND FOR FRUIT DEVELOPMENT
TLDR
Reduction in pollen concentration affected several aspects of early fruit development, but quantitative differences in the amount of pollen applied did not reduce the adverse effects of using diploid pollen, suggesting that such effects do not arise through direct action of the pollen on the maternal tissues. Expand
Sexual Selection in Raphanus sativus: Experimental Data on Nonrandom Fertilization, Maternal Choice, and Consequences of Multiple Paternity
TLDR
The paternity of seeds in the multiseeded fruits of R. sativus is determined and the consequences of microgametophytic competition among several pollen donors may be far more profound than competition among the male gametophytes produced by one pollen donor. Expand
The effect of pollination intensity and incompatible pollen on seed set in Turnera ulmifolia (Turneraceae)
TLDR
In both morphs, increasing amounts of pollen generally resulted in increased levels of seed set, although considerable variance was observed at all pollination intensities, which failed to detect a difference in the response of the floral morphs to pollination intensity. Expand
Fruit size variation and its effects on germination and seedling growth in Xanthium strumarium
Fruits of Xanthium strumarium L. from a population in southwestern Ontario exhibited an eightfold range in size. The effects of fruit size on seed size, germination, and seedling growth wereExpand
Regulation of Fruit Maturation Pattern in an Annual Legume, Cassia Fasciculata
TLDR
Investigation of the extent of and basis for selective fruit maturation in the annual legume, Cassia fasciculata Michx, demonstrated that fruit did not necessarily mature in the order initiated, although early initiated fruit were more likely to mature. Expand
Seed variation in wild radish: effect of seed size on components of seedling and adult fitness
TLDR
Two factors that have led to inconsistent results in previous studies of seed size and seedling success are pointed out: differences in the timing of growth measurements, and the presence or absence of competitive inequities among neighbors within the experimental design. Expand
POLLINATION DYNAMICS IN EPILOBIUM CANUM (ONAGRACEAE): CONSEQUENCES FOR GAMETOPHYTIC SELECTION.
  • A. Snow
  • Biology, Medicine
  • American journal of botany
  • 1986
TLDR
This study is one of the first to quantify natural levels of pollen tube competition in a population of Epilobium canum, and the amount of pollen deposited on stigmas and the timing of deposition. Expand
POLLINATION, FERTILIZATION AND OVULE ABORTION IN OXALIS MAGNIFICA
TLDR
Reduction in seed number through embryo abortion provides an opportunity for selection among developing seeds in Oxalis magnifica, which showed a 14-fold variation in the average percentage of aborted ovules. Expand
FLORAL BIOLOGY, HUMMINGBIRD POLLINATION AND FRUIT PRODUCTION OF TRUMPET CREEPER (CAMPSIS RADICANS, BIGNONIACEAE)
TLDR
Characteristics suggest that trumpet creeper may be adapted to pollination at low densities (often called traplining) in its presumed original, woodland, habitat. Expand
Time of cross- and self-pollination affects the amount of self-seed set by partially self-incompatible plants of Brassica oleracea
TLDR
The competitive advantage of the first pollen to arrive on the stigma is discussed in relation to the strength of the self-incompatibility and the sib problem in F1 hybrid brassicas. Expand
...
1
2
3
4
5
...