Pollen competition in onion (Allium cepa L.)

Currah, L.

doi:10.1007/bf00038797

Cited by 30 publications

(18 citation statements)

References 10 publications

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“…Several studies have shown that when pollen from two or more donors is applied to stigmas, seed paternity is, in fact, nonrandom (Bemis, 1959;Barnes and Cleveland, 1963;Pfahler, 1967Pfahler, , 1974aPfahler, , b, 1975Pfahler and Linskens, 1972;Levin, 1975;Ottaviano, Sari-Gorla, and Mulcahy, 1975;Sari-Gorla, Ottaviano, and Faini, 1975;Currah, 1981;Ottaviano, Sari-Gorla, and Arenair, 1983;Sarr, Fraleigh, and Sandmeir, 1983;Ellstrand, 1986, 1988;Bertin, 1990;Cruzan, 1990;Young and Stanton, 1990;Marshall, 1991Marshall, , 1998Snow andSpira, 1991, 1996;Rigney et al, 1993;Björkman, Samimy, and Pearson, 1995;Mitchell and Marshall, 1998;Pasonen et al, 1999). Several studies have shown that when pollen from two or more donors is applied to stigmas, seed paternity is, in fact, nonrandom (Bemis, 1959;Barnes and Cleveland, 1963;Pfahler, 1967Pfahler, , 1974aPfahler, , b, 1975Pfahler and Linskens, 1972;Levin, 1975;Ottaviano, Sari-Gorla, and Mulcahy, 1975;Sari-Gorla, Ottaviano, and Faini, 1975;Currah, 1981;Ottaviano, Sari-Gorla, and Arenair, 1983;Sarr, Fraleigh, and Sandmeir, 1983;Ellstrand, 1986, 1988;Bertin, 1990;Cruzan, 1990;…”

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confidence: 99%

Does differential seed siring success change over time or with pollination history in wild radish, Raphanus sativus (Brassicaceae)?

Marshall

Oliveras

2001

American J of Botany

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Previous work with wild radish has shown that pollen donors sire different numbers of seeds and that the condition of the maternal tissue affects seed paternity, suggesting that both pollen donor characteristics and maternal tissue affect mating. However, because these results are from the greenhouse, it is difficult to know whether they would hold true in the field. Here, we performed hundreds of crosses on several maternal plants to simulate changes during the flowering season of field plants. During the experiment, maternal resource availability changed due to the costs of producing fruits, and we determined the pollination history of a plant by performing crosses in specific orders. Examination of seed paternity showed that there were small differences in pollen donor success at the beginning of the experiment when maternal resources were abundant. Differential pollen donor success was greatest slightly later in the flowering period, but declined toward the end of the experiment. Thus, maternal plants may distinguish most among pollen donors when they have both abundant resources and experience with the differences in quality of available pollen donors. In contrast, there were few significant effects of the recent pollination history of plants on pollen donor success. Finally, despite the changes in mating performance over time, there were strong overall differences in pollen donor success, suggesting that seasonal changes in the field will not eliminate the potential for nonrandom mating.

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confidence: 99%

Does differential seed siring success change over time or with pollination history in wild radish, Raphanus sativus (Brassicaceae)?

Marshall

Oliveras

2001

American J of Botany

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“…Another contribution to this enhanced self-seed formation is possibly made by a specific parental combination effect (SPP 560 x FPP 1045) which was observed earlier in Cichorium (EENINK, 1982) . Such parental effects resulting in gamete selection, have been found in various genera such as Allium (CURRAH, 1981) and Nemesia (ROBACKER & ASCHER, 1981) with styles capable to discriminate among pollen tubes from different pollinators .…”

Section: Resultsmentioning

confidence: 99%

Compatibility and incompatibility in witloof chicory (Cichorium intybus L.). 4. Formation of self-seeds on a self-incompatible and a moderately self-compatible genotype after double and triple pollinations

Eenink

1984

Euphytica

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Cichorium intybus, witloof chicory, incompatibility, double pollinations, triple pollinations, mentor pollen, pioneer pollen . SUMMARY After double or triple pollinations including selfing and the use of one-day-old compatible foreign pollen a severely self-incompatible clone could be forced to develop a reasonable amount of self-seeds per flower head . This number of self-seeds increased when the foreign pollination was delayed for e.g. 240 minutes in the double pollination experiment . Even more self seeds were obtained in the triple pollination experiment with a delayed second selfing .The influence of the old foreign pollen may be caused by a mentor pollen or a pioneer pollen effect .

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“…It is well known from the study of several crop species that pollen from different donors can germinate and grow at differing rates (Schemske and Fenster 1983;Marshall and Ellstrand 1986). Variation in germination percentage and pollen tube growth rate may all cause one donor to sire more seeds than another (Sari-Gorla et al 1975;Sari-Gorla and Rovida 1980;Currah 1981Currah , 1983Ottaviano et al 1982Ottaviano et al , 1983Sarr et al 1983;Radha et al 1993;Rigney et al 1993). Size and number of pollen grains determine the area occupied on the stigmatic surface of the female, thereby excluding others from competition.…”

Section: Discussionmentioning

confidence: 98%

Variability of pollen grain features: a plant strategy to maximize reproductive fitness in two species of Dianthus ?

Tejaswini

2002

Sexual Plant Reproduction

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Pollen polymorphism was observed in populations of Dianthus caryophyllus and Dianthus chinensis within species and within genotypes. Germination capacity and vigor of pollen tube growth are correlated with grain size, as demonstrated using pollen culture in an extract of cultured Fusarium oxysporum Schlecht. f. sp. dianthi -the causative agent of carnation wilt. Larger grains exhibited higher germination frequency, suggesting adaptation for adverse conditions. Pollen tube growth rate, however, was negatively correlated with pollen size. Since pollen tube growth rate is typically associated with the vigor of the resulting sporophyte, smaller pollen grains may have a selective advantage and produce more vigorous progeny. The variability of germination response among various size classes of pollen grains suggests the occurrence of multiple pollen size classes as a survival strategy. The study also indicates a relationship between such pollen grain features as grain size and pollen tube growth rate as a strategy to maximize reproductive fitness.

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Pollen competition in onion (Allium cepa L.)

Cited by 30 publications

References 10 publications

Does differential seed siring success change over time or with pollination history in wild radish, Raphanus sativus (Brassicaceae)?

Does differential seed siring success change over time or with pollination history in wild radish, Raphanus sativus (Brassicaceae)?

Compatibility and incompatibility in witloof chicory (Cichorium intybus L.). 4. Formation of self-seeds on a self-incompatible and a moderately self-compatible genotype after double and triple pollinations

Variability of pollen grain features: a plant strategy to maximize reproductive fitness in two species of Dianthus ?

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