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

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 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.

Assessment of self-incompatibility in some improved and traditional cultivars of oleiferous (Brassica rapa L.)

2007 ◽  
Vol 32 (2) ◽  
Author(s):  
MA Zilani Chowdhury ◽  
MA Khaleque Mian ◽  
M Ali Akbar
Keyword(s):  
Brassica Rapa ◽  
Self Incompatibility ◽  
Traditional Cultivars
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