Asexual Versus Sexual Reproduction: Asexual reproduction is a means of reproduction during which one parent generates genetically identical offspring. Because only one parent is involved, and often each parent makes two offspring, this allows for rapid population growth. However, the populatio...
Genetically, powdery mildew is perfectly adapted to its host plants. Evidently, sexual reproduction and new combinations of genetic material usually prove disadvantageous for the fungus. Asexual reproduction, however, is considerably more successful for mildew, as plant biologists from the University of ...
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Pollinator limitation, cost of reproduction, and fitness in plants: a transition matrix demographic approach. The American Naturalist, 136, 499-516. Casper BB (1984). On the evolution of embryo abortion in the herbaceous perennial Cryptantha flava. Evolution, 38, 1337-1349. Casper BB, Head SB,...
1964. Axenic culture studies of a new marine phycomycete possessing an unusual type of asexual reproduction. Amer. J. Bot. 51: 72±78.Goldstein, S., and M. Belsky, Axenic Culture Studies of a New Marine Phycomycete Possessing an Unusual Type of Asexual Reproduction, Am. J. Bot. 51 ...
It is a widely accepted view that cytotaxonomy is one of the key determinants in the plant systematics as chromosome numbers significantly contribute to grouping plant species/taxa. The first ever report of the cytological work in the flowering plants (orchids) was given by Strasburger in 1882 (...
In: Hitchcock C L, Cronquist A, Ownbey M, Thompson J W eds. Vascular Plants of the Pacific Northwest. Seattle: University of Washington Press. Davis M A, Grime J P, Thompson K. 2000. Fluctuating resources in plant communities: a general theory of 1 期董 梅等: 加拿大一枝黄花——一种...
However, some studies have demonstrated a wide range of genetic diversity in populations of clonal plants or reproduction mode is not always associated with population genetic structure (Ell- strand & Roose, 1987; Hamrick & Godt, 1989). Whether and to what extent reproduction mode can influence ...
Ulocladium was thought to be a strictly asexual genus of filamentous fungi. However, Ulocladium strains were shown to possess both MAT1-1-1 and MAT1-2-1 genes as observed in homothallic filamentous Ascomycetes. Here, we demonstrate that the U. botrytis M
rabiei mating type in Ethiopia. Out of 156 samples, only 15 samples were positive to MAT1-1 (∼10 %) with the ratio of 9:1. MAT 1−2 type was the most dominant and possibly the asexual reproduction of D. rabiei is the major type in Ethiopia. The result is important for ...