Differential Effects of the Parental Photothermal Environment on Development of Dormancy in Caryopses of<i>Aegilops Kotschyi</i>

Wurzburger, Judith; Koller, D.

doi:10.1093/jxb/27.1.43

Cited by 35 publications

(21 citation statements)

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“…Generally seeds produced at higher temperatures have higher germination percentage and/or rates (i.e., lower dormancy) than those produced at lower temperatures and longer days. This has been documented under field conditions in some species such as Lactuca sativa (Harrington and Thompson, 1952), Artemisia rhodantha (Nosova, 1981), Portulaca oleracea (El-Keblawy and Al-Ansari, 2000) and Prunus avium (Jensen and Eriksen, 2001) as well as under experimental conditions in other species including Aegilops kotschyi (Wurzburger and Koller, 1976), Dactylis glomerata (Probert et al, 1985), Plantago lanceolata (Alexander and Wulff, 1985) Cenchrus ciliaris (Sharif-Zadeh and Murdoch, 2000) and Onopordum acanthium (Qaderi et al, 2003). However, in some cases (e.g., soybean and Thlaspi arvense) an inverse relationship has been found, where high temperatures during seed maturation caused seed dormancy (Hume, 1994;Keigley and Mullen, 1986).…”

Section: Article In Pressmentioning

confidence: 89%

“…Several studies have reported the importance of temperature during seed development and maturation as an important factor affecting seed germination (Alexander and Wulff, 1985;Allen and Meyer, 2002;El-Keblawy and Al-Ansari, 2000;Harrington and Thompson, 1952;Jensen and Eriksen, 2001;Nosova, 1981;Probert et al, 1985;Qaderi and Cavers, 2000;Qaderi et al, 2003;SharifZadeh and Murdoch, 2000;Wurzburger and Koller, 1976). Germination response has been also shown to be affected by day length experienced by maternal plants (El-Keblawy and Al-Ansari, 2000;Evenari et al, 1966;Heide et al, 1976;Munir et al, 2001;Richardson, 1979).…”

Section: Introductionmentioning

confidence: 99%

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Effects of seed maturation time and dry storage on light and temperature requirements during germination in invasive Prosopis juliflora

El‐Keblawy

Al-Rawai

2006

Flora - Morphology, Distribution, Functional Ecology of Plants

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Section: Article In Pressmentioning

confidence: 89%

Section: Introductionmentioning

confidence: 99%

Effects of seed maturation time and dry storage on light and temperature requirements during germination in invasive Prosopis juliflora

El‐Keblawy

Al-Rawai

2006

Flora - Morphology, Distribution, Functional Ecology of Plants

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“…Seed germinability has also been found to be affected, during the development and maturation, by environmental factors including: (1) day length (Lona 1947;Jacques 1957Jacques , 1968Koller 1962;Cumming 1963;Wentland 1965;Gutterman 1969Gutterman , 1973Gutterman , 1974Gutterman , 1978Gutterman a, b,c, 1982aGutterman , 1985Karssen 1970;Gutterman and Porath 1975;Pourrat and Jacques 1975), (2) temperature (Juntila 1973;Heide et al 1976), (3) parental photothermal environment (Datta et al 1972a;Wurzburger and Koller 1976;Kigel et al 1977), (4) light quality (Cumming 1963;McCullough and Shropshire 1970;Gutterman 1974;Gutterman and Porath 1975;Jacobsohn and Globerson 1980;Cresswell and Grime 1981) and (5) altitude (Dome 1981). Achenes of Lactuca serrioia, which mature during summer and autumn (Gutterman 1992c, in press), as well as the summer and winter maturing seeds (on the same mother plants) of certain biseasonal flowering perennial shrubs (Aizoaceae) have been found to show different germinability (Gutterman 1991).…”

Section: Introductionmentioning

confidence: 99%

Seed Germination in Desert Plants

Gutterman

1993

Adaptations of Desert Organisms

318

188

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PrefaceThis book is based on the author's 30 years of research in the desert, as well as on the research of others, on the dispersal and germination of annual angiospermae, geophytes and other perennial desert plants of the Negev Desert Highlands and the other deserts of Israel and the Sinai Peninsula. The findings are compared with the results of research that has been carried out in other hot deserts of the world. The focus of the book is on the extreme and unpredictable environmental conditions which influence the germination and survival of plants in the desert. These include the wide variation in the amount and distribution of rain and the differences in the length of the growing season from one year to the next, wide fluctuations in temperature, high salinity and the pressures of seed predation. The book presents ·an overview of the environmental factors influencing seed germination during plant development ~nd seed maturation, the mechanisms of seed dispersal and storage of the seed bank as well as those that affect germination during seed imbibition and seedling survival.The survival of plants under desert conditions is connected mainly with the germination mechanisms which ensure germination and seedling development at the right time and in a suitable place. Thus, during the plant life cycle the seed has the highest resistance to extreme environmental factors, whereas the seedling has the lowest. Are there special mechanisms in some species which are able to predict the best time and place for germination? It seems that there are two main directions in which evolution has taken place: 1. Plants with survival mechanisms that will enable seeds to be dispersed and/or germinate when the chance of seedling establishment is very high and the risk relatively low. Seeds of these plants only germinate after relatively large amounts of rain and, in many cases, have relatively large seeds which are well protected against many granivores. 2. In the opposite direction of evolution are species which produce tiny seeds in very large numbers, and many of these seeds germinate after even less than 10 mm of rainfall. These are condi-VI Preface tions of high risk for seedling establishment if additional rain does .not follow fairly quickly.One of the main topics considers what is special about the dispersal and germination of the seeds of plants that are found in deserts.The dispersal and germination strategies and mechanisms discussed focus mainly on annual plants in which germination is the most critical process before each growing season.Limited seed separation -synaptospermyis common among plant species inhabiting extreme deserts. Many synaptospermic species disperse their seeds by rain. At least two advantages of species with synaptospermic seed dispersal are seen particularly in extreme deserts: the retention of seeds in the favourable microhabitat where the mother plant had successfully completed its life cycle; and the protection of these seeds against seed collectors during the period from seed maturation to germi...

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“…Heteroblasty (Evenari, I963;Datta et al, 1970, I972;Wurzburger and Koller, 1976) is important to spread the risk to seedling survival when further rain does not follow (Evenari et al, 1966;Gutterman, 1973Gutterman, , 1978Angevine and Chabot, 1979;Venable and Lawlor, 1980;Silvertown, 1981Silvertown, , 1985Westoby, 1981). Schismus arabicus Nees (Poaceae) and Spergularia diandra (Guss.)…”

Section: Introductionmentioning

confidence: 99%

In Memoriam—michael Evenari and His Desert Seed Dispersal and Germination Strategies of Spergular Diandra Compared With Some Other Desert Annual Plants Inhabiting the Negev Desert of Israel

Gutterman

1994

Israel J Plant Sci

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The late Professor Michael Evenari was a leader and a great scientist with a very wide view and varied interests. Throughout the 26 years that I studied desert plants with Professor Evenari in the deserts of Israel and the Sinai Peninsula, he liked to summarize the seasonal field observations of seedling emergence with the words, "this particular year is a very special year."What are the reasons for such species' diversity, and what are the survival strategies of desert annuals? Some species are common and others emerge only once in several years under unpredictable seasonal precipitation and massive seed consumption by ants. Escape dispersal strategies after maturation of the tiny ,long-living seeds, and partial"opportunistic" germination strategies after only I 0 mm of rain, are found in some common annuals such as Schismus arabicus and Spergularia diandra. Day length during seed maturation, and light and temperatures during seed wetting and germination, also affect their germinability. InS. diandra, nine types of seeds have been found (3 genotypes and 3 color phenotypes), which differ in coat structure, color, and germinability, and in Mesembryanthemum nodiflorum a position effect was found (3 groups of seeds in a capsule). The more opportunities for a small portion of seeds from the seed bank to germinate after several rainfalls, the greater the chances to germinate at suitable rain distribution. This enables these plants to develop and produce large numbers of seeds, even after a number of small rainfalls.

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Differential Effects of the Parental Photothermal Environment on Development of Dormancy in Caryopses ofAegilops Kotschyi

Cited by 35 publications

References 0 publications

Effects of seed maturation time and dry storage on light and temperature requirements during germination in invasive Prosopis juliflora

Effects of seed maturation time and dry storage on light and temperature requirements during germination in invasive Prosopis juliflora

Seed Germination in Desert Plants

In Memoriam—michael Evenari and His Desert Seed Dispersal and Germination Strategies of Spergular Diandra Compared With Some Other Desert Annual Plants Inhabiting the Negev Desert of Israel

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