Changes in seed germination strategy along the successional gradient from abandoned cropland to climax grassland in a subalpine meadow and some implications for rangeland restoration

2020 ◽  
Vol 289 ◽  
pp. 106746 ◽  
Author(s):  
Kun Liu ◽  
Ting Liang ◽  
Weiya Qiang ◽  
Guozhen Du ◽  
Jerry M. Baskin ◽  
...  
Keyword(s):  
Seed Germination ◽  
Subalpine Meadow ◽  
Rangeland Restoration ◽  
Successional Gradient ◽  
Abandoned Cropland ◽  
Germination Strategy

scholarly journals Comparative Germination Ecology of Two Endemic Rhaponticum Species (Asteraceae) in Different Climatic Zones of the Ligurian and Maritime Alps (Piedmont, Italy)

Plants ◽  
2020 ◽  
Vol 9 (6) ◽  
pp. 708
Author(s):  
Valentina Carasso ◽  
Marco Mucciarelli ◽  
Francesco Dovana ◽  
Jonas V Müller
Keyword(s):  
Seed Germination ◽  
Alpine Plants ◽  
General View ◽  
Maritime Alps ◽  
Closely Related Species ◽  
Climatic Zones ◽  
Plant Nursery ◽  
The Relationship ◽  
Germination Requirements ◽  
Germination Strategy

Comparative studies of seed germination of closely related taxa can help increase our understanding of the ecological limitations of cold-adapted plants and forecast how they might respond to global warming. No studies exist on the relationship between thermoclimatic belts that classify mountain life zones according to bioclimatic criteria and the germination strategy of alpine plants. The aim of this study was to assess this relationship using two closely related species growing in different thermotypes and to test whether their germination responses were related to the climate at natural sites. Fresh Rhaponticum bicknellii and R. scariosum seeds were cold stratified for 0, 30, 60 and 90 days and tested for germination at 10, 15 and 20 °C. At the same time, seed burial experiments were run in the field and in the plant nursery. A GLM analysis showed that the length of cold stratification affected significantly only the germination of R. bicknellii seeds, while increasing temperatures prompted germination in both species. We found that R. bicknellii adopts a drought-avoiding germination strategy, while R. scariosum germination is favoured by warm temperatures. Our findings support the general view that alpine plants do not share common germination requirements and that any conclusions should be interpreted from a biogeographical and bioclimatic perspective. Therefore, seed germination and seedling establishment of endemic alpine species can also be predicted by looking at the bioclimate of the species’ range.

Germination strategy of Allium victorialis, a wild edible plant with high commercial potential

Botany ◽  
2017 ◽  
Vol 95 (2) ◽  
pp. 195-202
Author(s):  
Rina Kamenetsky ◽  
Joanna Gębura ◽  
Krystyna Winiarczyk
Keyword(s):  
Seed Germination ◽  
Edible Plant ◽  
Natural Habitats ◽  
Spring Ephemeral ◽  
Temperature Regimes ◽  
Physiological Dormancy ◽  
Germination Techniques ◽  
Nutraceutical Properties ◽  
New Crop ◽  
Germination Strategy

The spring ephemeral Allium victorialis grows naturally in Europe, Asia, and North America. Because of its pleasant taste, aroma, and nutraceutical properties, it is intensively gathered in its natural habitats by the local populations. To introduce A. victorialis as a new crop, technologies of mass-propagation and effective production must be developed. However, the biology of seed dormancy and germination in this species is not clear, and numerous attempts at controlled seed germination have not succeeded. We employed a systematic approach for seed germination of this species under controlled conditions. Two main factors, post-ripening seed age and germination temperature regimes, were studied in combination with various germination techniques. As opposed to common conceptions, our results show that the seeds of A. victorialis do not experience morphological, physical, or physiological dormancy, and are completely ready for germination immediately following ripening. Propagation of A. victorialis from seed can be performed by germination of fresh seeds at moderate (20 °C) temperatures, in a sterile planting medium with good aeration. The germination strategy, revealed in this research, opens new prospects for the development of A. victorialis as a new and useful crop.

Germination strategies of 20 alpine species with varying seed mass and light availability

2013 ◽  
Vol 61 (5) ◽  
pp. 404 ◽  
Author(s):  
Gao-Lin Wu ◽  
Guo-Zhen Du ◽  
Zhi-Hua Shi
Keyword(s):  
Seed Germination ◽  
Light Availability ◽  
Seed Mass ◽  
Significant Negative Correlation ◽  
Germination Percentage ◽  
Central Component ◽  
Grassland Community ◽  
Germination Characteristics ◽  
Germination Strategy

Seed germination is a central component of plant life history. To investigate the proposed role of seed size on germination strategy in plant communities, a semifield experiment was conducted in alpine meadow of the Qinghai–Tibetan Plateau, China. Interspecies relationships of seed mass and seed germination characteristics were studied under semifield conditions with different light availability. Light availability and seed mass had significant effects on final germination percentage and time to germination for studied species. There was a significant negative correlation between the strength of light required for germination and seed mass. Fifteen study species (e.g. Ligularia przewalskii, Artemisia sieversiana Willd, Tripolium vulgare Ness. and Saussurea morifolia Chen) exhibited a synchronous germination strategy. Seeds from large-seeded species, such as Dracocephalum ruyschiana, Laniophlomis rotate (Benth.) and Salvia przewalskii Maxim., were less likely to require light for germination than those of small-seeded species, such as A. sieversiana Willd, Senecio diversipinnus Ling and Saussurea mongolica (Franch.). We propose that germination strategies of small-seeded species are well suited to unpredictable environmental variation in this alpine grassland community.

beta-Glucosidase activities and HCN liberation in unimbibed and imbibed seeds, and the induction of cocklebur seed germination by cyanogenic glycosides

1991 ◽  
Vol 83 (1) ◽  
pp. 34-40 ◽  
Author(s):  
Yohji Esashi ◽  
Shinichi Matsuyama ◽  
Hiroki Ashino ◽  
Maria Ogasawara ◽  
Ryo Hasegawa
Keyword(s):  
Seed Germination ◽  
Cyanogenic Glycosides ◽  
Beta Glucosidase

Allelopathic effect of cumin (Cuminum cyminum L.) on seed germination of three weeds

Planta Medica ◽  
2011 ◽  
Vol 77 (12) ◽  
Author(s):  
A Soleymanifard ◽  
R Naseri ◽  
A Mirzaei ◽  
H Naserirad
Keyword(s):  
Seed Germination ◽  
Allelopathic Effect ◽  
Cuminum Cyminum

Effects of pre-chilling, incubation temperature and light on seed germination of Saponaria officinalis

Planta Medica ◽  
2015 ◽  
Vol 81 (16) ◽  
Author(s):  
YA Jeon ◽  
HS Lee ◽  
ES Park ◽  
YY Lee ◽  
JS Sung ◽  
...  
Keyword(s):  
Seed Germination ◽  
Incubation Temperature ◽  
Saponaria Officinalis

IMPACT OF FERTILIZERS APPLICATION ON SEED GERMINATION AND SEEDLING GROWTH OF VIGNA RADIATA

2018 ◽  
Vol 24 (2) ◽  
Author(s):  
SUPRIYA DIXIT ◽  
R. K. GUPTA
Keyword(s):  
Seed Germination ◽  
Leaf Area ◽  
Seedling Growth ◽  
Vigna Radiata ◽  
Agricultural Research ◽  
Dry Weight ◽  
Fertilizer Application ◽  
Research Field ◽  
Chemical Fertilizer ◽  
Seedling Length

Currently, a real challenge for the workers in the agricultural research field is to stop or reduce the use of expensive agrochemicals/ chemical fertilizers which are hazardous to the environment as well as human health. Present study was aimed to improve the growth and obtain optimum yield of Vigna crop with eco-friendly, non-toxic way and to reduce the use of agrochemical/chemical fertilizer application in agricultural activities. A pot experiment was conducted to study the effect of chemical fertilizer (DAP) and biofertilizer ( Rhizobium strain) separately and in combination on seed germination and seedling growth (at 30 days) based on morphological parameters such as seedling length (cm), fresh weight (g), dry weight (g) and leaf area (cm)2 of Vigna radiata (L.) Wilczek. After one month (30 Days) observations, it was found that seedling length, fresh and dry weights and leaf area were maximum in T4 and minimum in T15, T7 and T8 favored improved seedling length and leaf area whereas T7, T8, and T9 favored improved fresh and dry weights as compared to control.

Sign in / Sign up

Export Citation Format

Share Document