scholarly journals Correlation of self‐ and interspecific incompatibility among sympatric Hedyotis species (Rubiaceae) and consequences for hybridization

Author(s):  
Mahadura A. Dias ◽  
Richard M. K. Saunders

Nature ◽  
1972 ◽  
Vol 237 (5355) ◽  
pp. 381-383 ◽  
Author(s):  
R. B. KNOX ◽  
R. R. WILLING ◽  
ANNE E. ASHFORD


1993 ◽  
Vol 71 (2) ◽  
pp. 353-358 ◽  
Author(s):  
Lawrence D. Harder ◽  
Mitchell B. Cruzan ◽  
James D. Thomson

To determine whether interspecific pollen transfer could reduce seed production by two sympatric lilies, Erythronium albidum and Erythronium americanum, we hand-pollinated flowers with mixtures of conspecific and heterospecific pollen. These species exhibited typical unilateral interspecific incompatibility, i.e., pollen tubes from the self-infertile species (E. americanum) grew apparently unimpeded in styles of the self-fertile species (E. albidum), whereas the reverse cross resulted in an incompatibility reaction. Because of this asymmetrical relation and faster growth by heterospecific pollen tubes in E. albidum stigmas than by conspecific tubes, pollination with abundant heterospecific pollen reduced fruit and seed production by E. albidum, but not by E. americanum, as long as the stigma also received some conspecific pollen. Unilateral incompatibility could benefit self-infertile species in reproductive interactions with closely related self-fertile species; however, this benefit remains to be demonstrated for naturally pollinated plants. Key words: Erythronium albidum, Erythronium americanum, interspecific pollen transfer, pollination, unilateral incompatibility.



2019 ◽  
pp. 167-175
Author(s):  
K.R. Shivanna


1976 ◽  
Vol 40 (4) ◽  
pp. 891-893 ◽  
Author(s):  
D. C. SASTRI ◽  
K. R. SHIVANNA




1972 ◽  
Vol 59 (2) ◽  
pp. 203-208 ◽  
Author(s):  
Lyle L. Phillips ◽  
James F. Merritt


1986 ◽  
Vol 73 (4) ◽  
pp. 465-474 ◽  
Author(s):  
C. F. Bob ◽  
B. L. Redmond ◽  
D. F. Karnosky




1959 ◽  
Vol 46 (6) ◽  
pp. 425-433 ◽  
Author(s):  
J. R. McWilliam


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