Review
Plant Sciences
Jerry M. Baskin, Carol C. Baskin
Summary: This review provides a revised and expanded word-formula system of whole-seed primary dormancy classification, highlighting the great diversity and complexity of primary seed dormancy at the whole-seed level. The changes include an increase in the number of named tiers in the classification hierarchy, provision of formulae for known kinds of dormancy, and the designation of new subclasses in the morphological dormancy class.
SEED SCIENCE RESEARCH
(2021)
Review
Plant Sciences
Alberto Gianinetti
Summary: The basic features and regulatory mechanisms of seed dormancy are explained in this study. The balance between abscisic acid (ABA) and gibberellins (GAs) is crucial in determining the state of seed dormancy or germination. The antagonism between ABA and GAs is regulated by a bistable switch in the regulatory circuit. However, specific dormancy factors are required to determine the development trajectory of the seed.
Article
Multidisciplinary Sciences
Ahlam Khalofah
Summary: This study demonstrates that mechanical scarification is effective in improving seed germination of Juniper seeds, with significant improvements observed in seedling traits when utilizing 5 Mm potassium nitrate.
JOURNAL OF KING SAUD UNIVERSITY SCIENCE
(2022)
Article
Plant Sciences
Y. S. Athugala, K. M. G. Gehan Jayasuriya, A. M. T. A. Gunaratne, C. C. Baskin
Summary: This study aimed to develop a seed dormancy profile for tropical montane forests of Sri Lanka and found that the majority of species in this ecosystem exhibit dormancy, with different species showing various types of dormancy mechanisms.
Article
Horticulture
Da Hyun Lee, Chung Youl Park, Young Ho Jung, Jun Hyeok Kim, Sung Hyuk Park, Ho Jun Son, Chae Sun Na, Wan Geun Park
Summary: The aim of this study was to elucidate the seed-dormancy break and germination characteristics of Vaccinium oldhamii. The results showed that the seeds of V. oldhamii exhibited Nondeep physiological dormancy (Nondeep PD). Treatment with 500 ppm of GA(3) at 25/15 degrees C was able to effectively break the dormancy of V. oldhamii seeds. These findings provide convenience for further research on the species.
Article
Plant Sciences
V Thusithana, R. W. K. Amarasekara, K. M. G. Gehan Jayasuriya, N. S. Gama-Arachchige, C. C. Baskin, J. M. Baskin
Summary: Seed quality and moisture content affect the germination of Cardiospermum halicacabum seeds, with seeds with water-impermeable seed coats showing different responses in different climatic zones. Seeds from DZ and WZ1 showed higher imbibition rates compared to WZ2 seeds, indicating that scarified seeds are more likely to germinate.
Article
Plant Sciences
Maria Laura Foschi, Mariano Juan, Bernardo Pascual, Nuria Pascual-Seva
Summary: This study reports on the influence of testa and endosperm on seed germination of the caper shrub, as well as the effect of gibberellic acid (GA(3)) solutions in breaking seed dormancy. The best germination results were observed with seeds devoid of testa wetted with water and intact seeds wetted with a GA(3) solution. GA(3) addition increased endogenous gibberellin content and the GA/abscisic acid ratio, promoting seed germination. Germination of caper seeds involved testa cracking and endosperm piercing, with puncture force decreasing during imbibition and remaining constant until testa cracking occurred.
Article
Plant Sciences
Veronika Sedlakova, Sanja Cavar Zeljkovic, Nikola Stefelova, Petr Smykal, Pavel Hanacek
Summary: The study investigates the relationship between the content of phenylpropanoids in chickpea seed coats and dormancy. Significant differences in phenolic and flavonoid metabolites were found among different chickpea genotypes. Phenolic acids were generally more concentrated in the wild parental genotype and dormant recombinant inbred lines (RILs).
Review
Biochemistry & Molecular Biology
Ahmed Abdelfattah, Ayco J. M. Tack, Carolina Lobato, Birgit Wassermann, Gabriele Berg
Summary: This study proposes dividing the microbial inheritance process into three stages: plant to seed, seed dormancy, and seed to seedling. It discusses the factors affecting microbiome assembly during these stages, highlights future research directions, and emphasizes the implications of microbial inheritance for fundamental science and society.
TRENDS IN MICROBIOLOGY
(2023)
Article
Plant Sciences
Tania Bertuzzi, Diego Lopez-Spahr, Carlos A. Gomez, Silvia Suhring, Gisela Malagrina, Carol C. Baskin, Guadalupe Galindez
Summary: The persistence of subtropical seasonally dry forests requires ex situ conservation and restoration programs. Seed traits and dormancy of six native species were studied, showing high variability and species-specific characteristics. These findings have implications for conservation techniques and seed sourcing decisions for restoration.
Article
Plant Sciences
Y. H. Rhie, S. Y. Lee, J. L. Walck, S. N. Hidayati
Summary: Disjunct species in the same genus in temperate forests of East Asia and eastern North America share the same type of seed dormancy, which likely originated from a common ancestor and has been maintained in populations after their separation. Despite quantitative differences in temperature requirements for radicle and shoot emergence, this may be a result of adaptation to the environment.
Article
Biochemistry & Molecular Biology
Jing Zhang, Jia-Yi Qian, Yue-Hong Bian, Xiao Liu, Chun-Lei Wang
Summary: This study analyzed the transcriptome profiles of pear seeds during cold stratification, revealing the crucial role of hormones, carbohydrate metabolism, transcription factors, and lipid metabolism in the release of pear seed dormancy.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Biology
Jia Liu, Tingting Xue, Liying Ren, Mingxia Cui, Tao Jiang, Xutao Yang
Summary: This study confirmed through experiments that the endocarp of pecan seeds causes mechanical rather than chemical dormancy, and the endocarp has a certain inhibitory effect on the elongation of the radicle, but it is not a direct physical restriction on the radicle.
OPEN LIFE SCIENCES
(2022)
Article
Forestry
Shiferaw Alem Munie, Hana Habrova, Katerina Houskova, Lukas Karas
Summary: This study focused on breaking the seed dormancy of Dracaena steudneri Schweinf. Ex Engl. seeds using different presowing treatments. However, the results showed that the treatments did not improve the germination rates of the seeds. More research on the seed ecophysiology of this species is recommended.
Article
Agronomy
Stefano Benvenuti, Marco Mazzoncini
Summary: The ability of weed seeds to survive and emerge from different soil textures and burial depths is influenced by factors such as soil texture, seed weight, and the maximum hypocotyl elongation. The inhibitory effects on seed emergence are found to be more pronounced in clay soil compared to sandy soil. Evaluating the performance of buried seed banks in different soil textures can help improve the forecast models of emergence dynamics and lead to more rational and sustainable weed management practices.
