Self-incompatibility and interspecific incompatibility: relationships in intra- and interspecific crosses of Zinnia elegans Jacq. and Z. angustifolia HBK (Compositae)

1986 ◽  
Vol 73 (2) ◽  
pp. 305-315 ◽  
Author(s):  
T. H. Boyle ◽  
D. P. Stimart
Keyword(s):  
Zinnia Elegans ◽  
Interspecific Crosses ◽  
Self Incompatibility ◽  
Interspecific Incompatibility

scholarly journals Ovarian Incompatibility in Tuberose (Polianthes Tuberosa L.) Cultivars and Breeding Lines

2021 ◽  
Author(s):  
Thangaraj Usha Bharathi ◽  
Rosalind Lallawmzuali ◽  
Subramanyamrao Prabhakarrao Kirthishree
Keyword(s):  
Pollen Tube ◽  
Pollen Tube Growth ◽  
Normal Development ◽  
Seed Set ◽  
Interspecific Crosses ◽  
Self Incompatibility ◽  
Interaction Study ◽  
Nucellar Cell ◽  
Breeding Lines ◽  
Controlled Pollination

Abstract Background: Incompatibility occurs frequently in the plant system upon intra- or interspecific crosses resulting in several pollination barriers. The modest understanding on the breeding behaviour and mechanisms governing tuberose (Polianthes tuberosa L.) through this study will direct us to appraise the pollination and post pollination events on self- and cross- incompatibility and seed set behaviour for cross breeding programme.Results: Self-pollination of tuberose cultivars Arka Prajwal, Mexican Single and Arka Sugandhi failed to produce pods upon autogamy and geitonogamy. Pollen-pistil interaction study of incompatible cultivar Arka Prajwal substantiates that pollen tube enters the ovule within 24 hours after pollination. It discharges its contents into the embryo on the 1st day after pollination and polysaccharide granules evident upon fluorescence microscopic study. The pollen tube growth rates of self and controlled pollination were similar; however, sterility was expressed in the ovary. The female gametophytic development in self and cross incompatible cultivar Arka Prajwal showed normal development initially after pollination whereas embryosac degeneration was observed at later stage. Complete degeneration of the integument and nucellar cells was also observed. Conclusions: This study is the first to elucidate the occurrence of pseudo self-incompatibility in tuberose by identifying tuberose cultivars and breeding lines which produce pods upon geitonogamy. A positive pollen-pistil interaction with the degeneration of embryosac, integument and nucellar cell and pod shrinkage, abortion and fall confirms the prevalence of the ‘Ovarian Incompatibility’ or ‘Late-Acting Incompatibility’ in tuberose.

Interspecific Incompatibility Amongst Victorian Species of Amyema (Loranthaceae)

1982 ◽  
Vol 30 (2) ◽  
pp. 175 ◽  
Author(s):  
P Bernhardt
Keyword(s):  
Pollen Viability ◽  
Interspecific Cross ◽  
Pollen Tubes ◽  
The Other ◽  
Current Evidence ◽  
Interspecific Crosses ◽  
Natural Distribution ◽  
Interspecific Incompatibility ◽  
Pollen Tube Penetration

Each of the six Amyema species collected in Victoria had a natural distribution and floral phenoiogy that overlapped with at least one of its Victorian congenerics. All of the Amyema spp. were pollinated by the same family of birds (Meliphagidae, honeyeaters) and often by the same species. All intraspecific cross-pollinations in vitro consistently produced an average of more than five pollen tubes per style which grew more than 0.125 the length of the style within 24 hours. Seventeen of 30 interspecific pollinations in vitro failed to produce pollen tubes in the style over the same time. Only eight of the 30 interspecific crosses attempted produced results competitive with respective intraspecific crosses. The success of the interspecific cross appeared to depend on the breeding system of the species receiving pollen from another. Self-incompatible Amyema pendulum (Sieb. ex Spreng.) Van Tieghem and Amyema miraculosum (Miq.) Van Tieghem repeatedly failed to accept the pollen of all the other species. Seif- compatible Amyema preisii (Miq.) Van Tieghem and Amyema quandang (Lindl.) Van Tieghem showed good to excellent interspecific pollen tube penetration of stylar tissue. Partially self-compatible Amyema linophyllum (Fenzl) Van Tieghem and Amyema miquelii (Lehm. ex Miq.) Van Tieghem showed results intermediate between self-compatible and self-incompatible taxa. Geographic and floral phenological barriers contribute partially to interspecific isolation as intercompatible species may have regionally different flowering seasons and distributions. F, hybrids recorded in southern Australia show extremely low rates of pollen viability and seed production. There is no current evidence that introgression occurs.

scholarly journals Pollen Tube Behavior Related to Self-incompatibility in Interspecific Crosses of Fagopyrum.

1995 ◽  
Vol 45 (1) ◽  
pp. 65-70
Author(s):  
Tamaki Hirose ◽  
Akio Ujihara ◽  
Hiromi Kitabayashi ◽  
Mineo Minami
Keyword(s):  
Pollen Tube ◽  
Interspecific Crosses ◽  
Self Incompatibility

INCOMPATIBILITY IN RUBUS WITH SPECIAL REFERENCE TO R. IDAEUS L.

1968 ◽  
Vol 10 (2) ◽  
pp. 253-262 ◽  
Author(s):  
Elizabeth Keep
Keyword(s):  
Special Reference ◽  
Vegetative Propagation ◽  
Pollen Tubes ◽  
The Self ◽  
Self Incompatibility ◽  
Interspecific Incompatibility ◽  
S Alleles ◽  
In The Wild ◽  
Rubus Species ◽  
Selection For

Self-incompatibility is demonstrated in 11 out of 23 Rubus species, including wild raspberry R. idaeus, in which stylar inhibition of self-pollen-tubes occurs. In contrast, nearly all raspberry cultivars are fully self-fertile, probably, as is demonstrated for a derivative of Burnetholm, through mutation of S alleles to the St condition.Unilateral interspecific incompatibility in crosses with the self-compatible R. occidentalis occurs equally with self-incompatible wild raspberry or self-compatible raspberry cultivars as seed parents, showing that the latter retain their stylar activity. This suggests recent aquisition of self-fertility, cultivars being in the 'Sc' condition of Lewis and Crowe.It is suggested that vegetative propagation in R. idaeus provides many of the advantages of inbreeding and this, together with intense selection for vigour, ensures the maintenance of obligate outbreeding in the wild.

scholarly journals Polygamy or subdioecy? The impact of diallelic self-incompatibility on the sexual system in Fraxinus excelsior (Oleaceae)

2018 ◽  
Vol 285 (1873) ◽  
pp. 20180004 ◽  
Author(s):  
Pierre Saumitou-Laprade ◽  
Philippe Vernet ◽  
Arnaud Dowkiw ◽  
Sylvain Bertrand ◽  
Sylvain Billiard ◽  
...  
Keyword(s):  
Evolutionary Biology ◽  
Flowering Plants ◽  
Fraxinus Excelsior ◽  
Interspecific Crosses ◽  
Alternative Mechanism ◽  
Self Incompatibility ◽  
Central Question ◽  
Male And Female ◽  
Sexual Specialization ◽  
The Impact

How flowering plants have recurrently evolved from hermaphroditism to separate sexes (dioecy) is a central question in evolutionary biology. Here, we investigate whether diallelic self-incompatibility (DSI) is associated with sexual specialization in the polygamous common ash ( Fraxinus excelsior ), which would ultimately facilitate the evolution towards dioecy. Using interspecific crosses, we provide evidence of strong relationships between the DSI system and sexual phenotype. The reproductive system in F. excelsior that was previously viewed as polygamy (co-occurrence of unisexuals and hermaphrodites with varying degrees of allocation to the male and female functions) and thus appears to actually behave as a subdioecious system. Hermaphrodites and females belong to one SI group and functionally reproduce as females, whereas males and male-biased hermaphrodites belong to the other SI group and are functionally males. Our results offer an alternative mechanism for the evolution of sexual specialization in flowering plants.

scholarly journals The evaluation of self-compatibility and crossability in the genus Pyrus based on the observation of pollen tubes growth

2012 ◽  
Vol 59 (1) ◽  
pp. 91-97 ◽  
Author(s):  
Wojciech Antkowiak ◽  
Andrzej Wojciechowski
Keyword(s):  
Pollen Tubes ◽  
Pyrus Communis ◽  
Fluorescence Microscope ◽  
The Other ◽  
Interspecific Crosses ◽  
Self Incompatibility ◽  
Self Compatibility

Interspecific compatibility and self-compatibility in <i>Pyrus communis</i>, <i>P. pyraster</i> and <i>P. salicifolia</i> were evaluated. Degree of compatibility was determined by means of fluorescence microscope. Self-incompatibility evaluated on the basis of the pollen tubes growth showed that two cultivars of <i>P. communis</i> (Bera Hardy and Lukasówka) were self-compatible and the other three cultivars were self-incompatible. All ecotypes of <i>P. pyraster</i> are self-incompatible. In interspecific crosses full inter-incompatibility or unilateral self-incompatibility was observed.

scholarly journals Differential interspecific incompatibility among Populus hybrids in sections Aigeiros Duby and Tacamahaca Spach

2011 ◽  
Vol 87 (06) ◽  
pp. 790-796 ◽  
Author(s):  
A. Assibi Mahama ◽  
Richard Hall ◽  
Ronald Zalesny
Keyword(s):  
Success Rate ◽  
Seed Production ◽  
Interspecific Hybrids ◽  
Seed Set ◽  
Interspecific Crosses ◽  
Interspecific Incompatibility

In our previous Populus breeding, compatible crosses between P. maximowiczii A. Henry and P. deltoides Bartr. ex Marsh corroborated the potential of interspecific hybrids, despite low seed set. Our current objective was to test the range of incompatibility among intraspecific and interspecific crosses using parental germplasm from the sections Aigeiros Duby (P. deltoides and P. nigra L.) and Tacamahaca Spach (P. maximowiczii). We determined the success rate of crosses, along with seed production and seedling viability. The success of crosses ranged from complete incompatibility to complete compatibility, with 29% to 85% of the transplanted germinants developing into healthy seedlings.

scholarly journals Self-incompatibility in Brassicaceae crops: lessons for interspecific incompatibility

2014 ◽  
Vol 64 (1) ◽  
pp. 23-37 ◽  
Author(s):  
Hiroyasu Kitashiba ◽  
June B. Nasrallah
Keyword(s):  
Self Incompatibility ◽  
Interspecific Incompatibility

scholarly journals Correlated evolution of self and interspecific incompatibility across the range of a Texas wildflower

2017 ◽  
Author(s):  
Federico Roda ◽  
Robin Hopkins
Keyword(s):  
Mate Choice ◽  
Pollen Tube ◽  
Geographic Variation ◽  
Strong Evidence ◽  
Self Incompatibility ◽  
Native Range ◽  
Interspecific Incompatibility ◽  
Self Compatibility ◽  
Recognition Systems ◽  
Phlox Drummondii

AbstractPlant species have repeatedly evolved recognition systems between pollen and pistils that identify and reject inappropriate matings. Two of the most important systems recognize self-pollen and interspecific pollen. Outstanding questions are whether and how these two recognition systems are linked and if this association could constrain the evolution of mate choice. Our study characterizes variation in self and interspecific incompatibility in the native range of the Texas wildflower Phlox drummondii. We found quantitative variation in self-incompatibility and demonstrate that this variation is significantly correlated with variation in incompatibility with its close congener P. cuspidata. Furthermore, we find strong evidence that self and interspecific incompatibility involve common mechanisms of pollen adhesion or early pollen-tube germination. Finally, we show that P. drummondii populations that co-occur and hybridize with P. cuspidata have significantly higher interspecific incompatibility and self-incompatibility than isolated P. drummondii populations. This geographic variation suggests that the evolution of self-compatibility is constrained by selection favoring interspecific incompatibility to reduce maladaptive hybridization. To our knowledge this is the strongest evidence that a correlation between variation in self and interspecific incompatibilities could influence the evolution of pollen recognition across the range of a species.

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