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| Web URL(s): | https://academic.oup.com/aob/article/91/3/391/231105/
Last checked: 03/01/2017
Requires: PDF Reader |
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| Publication Type:
| Refereed |
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| Author(s): | Ofir, Micha;
Kigel, Jaime |
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| Author Affiliation: | Institute of Plant Sciences and Genetics in Agriculture, Faculty of Agriculture, Food and Environmental Sciences, Hebrew University of Jerusalem, Rehovot, Israel |
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| Title: | Variation in onset of summer dormancy and flowering capacity along an aridity gradient in Poa bulbosa L., a geophytic perennial grass |
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| Section: | Original articles
Other records with the "Original articles" Section
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| Source: | Annals of Botany. Vol. 91, No. 3, February 2003, p. 391-400. |
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| Publishing Information: | London, Oxford University Press |
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| # of Pages: | 10 |
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| Keywords: | TIC Keywords: Aridity; Cultivar evaluation; Dormancy; Flowering; Growth analysis; Physiological processes; Poa bulbosa; Seasonal behavior; Site factors; Summer
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| Geographic Terms: | Israel |
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| Abstract/Contents: | "Variation in the onset of summer dormancy and flowering capacity of 16 populations of Poa bulbosa, collected along a steep north-south aridity gradient in Israel (810-110 mm rain year-1), was studied under controlled conditions in a phytotron (16 h daylength, 22/16 °C day/night) and under natural conditions in a garden experiment in a net-house. Plant age at the onset of dormancy varied markedly amongst populations (7-16 weeks under controlled conditions) and was positively correlated with mean annual precipitation at the site of origin of the population, i.e. dormancy was earlier as aridity increased. Flowering capacity in the different populations was negatively correlated with rainfall in the original habitat and, consequently, also with the age at onset of dormancy, i.e. the lower the mean annual precipitation, the earlier the onset of dormancy and the higher the proportion of flowering plants and panicles per plant. Differences in xeromorphic leaf traits were also observed among populations from locations differing in aridity. Plants from the more arid sites (110-310 mm year-1) generally had greyish and curved leaves, whereas plants from more humid sites (500-810 mm year-1) tended to have green and straight leaves. Thus, plants with curved and/or greyish leaves generally had a higher flowering capacity and entered dormancy earlier than plants with straight and/or green leaves. The significance of the association among these traits for the adaption of P. bulbosa to increasing aridity is discussed." |
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| Language: | English |
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| References: | 42 |
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| Note: | Pictures, color
Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Ofir, M., and J. Kigel. 2003. Variation in onset of summer dormancy and flowering capacity along an aridity gradient in Poa bulbosa L., a geophytic perennial grass. Ann. Bot. 91(3):p. 391-400. |
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| Web URL(s):
https://academic.oup.com/aob/article/91/3/391/231105/
Last checked: 03/01/2017
Requires: PDF Reader |
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MSU catalog number: QK 1 .A53 |
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