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Publication Type J
Authors Richard, G. A., J. F. Pensiero, M. C. Cerino, B. G. Galati and H. F. Gutierrez
Title Reproductive biology of Sporobolus phleoides Hack. (Poaceae), an endemic halophyte grass of Argentina
Source Plant Systematics and Evolution
Author Keywords Autogamy Breeding system Cleistogamy Sporobolus self-fertilization flowering plants breeding systems bakers law cleistogamy gramineae plasticity strategies allocation australia
Abstract Sporobolus phleoides is an endemic grass of Argentina considered an important genetic resource for saline environments due to its salinity tolerance. Basic information about its reproductive biology is needed to adequately preserve its genetic variability. Hence, we studied its breeding system through phenology, embryological analysis, and self-pollination versus open-pollination treatments in six populations collected from four provinces of Argentina. The results indicated that S. phleoides is mainly autogamous with a high fertility rate. Cleistogamous and chasmogamous spikelets are isomorphic and occur simultaneously on the inflorescence, with higher percentages of cleistogamy found in the basal region of the panicle. The average percentage of cleistogamy during the study period was 23 % for all populations evaluated. The development of the embryo sac follows the typical pattern of grasses and indicates normal sexual reproduction. This study provides the basis for programming genotype collections for gene banks and future plans of domestication.
Author Address [Richard, Geraldina Alicia; Pensiero, Jose Francisco; Cerino, Maria Carolina; Gutierrez, Hugo Francisco] Univ Nacl Litoral, Catedra Bot Sistemat Agron, Fac Ciencias Agrarias, Esperanza, Argentina. [Galati, Beatriz Gloria] Univ Buenos Aires, Fac Agron, Catedra Bot Gen, Buenos Aires, DF, Argentina. [Richard, Geraldina Alicia; Pensiero, Jose Francisco; Cerino, Maria Carolina; Galati, Beatriz Gloria] Consejo Nacl Invest Cient & Tecn, Buenos Aires, DF, Argentina. Richard, GA (reprint author), Univ Nacl Litoral, Catedra Bot Sistemat Agron, Fac Ciencias Agrarias, RP Luis Kreder 2805,3080HOF, Esperanza, Argentina. geralrichard@gmail.com
ISSN 0378-2697
ISBN 0378-2697
Publication Date Aug
Year Published 2015
Volume 301
Issue 7
Beginning Page 1937-1945
Digital Object Identifier (DOI) 10.1007/s00606-015-1206-1
Unique Article Identifier WOS:000358041000014
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