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Genetic systems of six species of Plantago (Plantaginaceae)
Namrata Sharma, Pushpa Koul and A. K. Koul
Plant Systematics and Evolution
Vol. 181, No. 1/2 (1992), pp. 1-9
Published by: Springer
Stable URL: http://www.jstor.org/stable/23674780
Page Count: 9
You can always find the topics here!Topics: Species, Plants, Pollen, Anthers, Breeding, Flowers, Evolution, Flower stigma, Seed set, Genetics
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Investigation of the genetic system of six species of Plantago has revealed striking differences in their breeding and meiotic systems. Plantago patagonica is an inbreeder on account of preanthesis cleistogamy, whereas P. lanceolata is an obligate outbreeder, as it is self-incompatible. Plantago drummondii, P. lagopus, P. ovata, and P. major show mixed mating but in varying proportions. In terms of their energy budgets, outbreeding species invest more in floral advertisement and male function, while inbreeders invest more in female function. The contribution of the meiotic system to genetic variability, as revealed through recombination index, is more important in the inbreeding species.
Plant Systematics and Evolution © 1992 Springer