Article
Plant Sciences
Keliang Zhang, Haolei Pan, Carol C. Baskin, Jerry M. Baskin, Zuoming Xiong, Weizhang Cao, Linjun Yao, Bin Tang, Chuni Zhang, Jun Tao
Summary: This study investigated the temperature requirements for radicle and shoot emergence in P. ostii seeds and the correlation between these two stages of dormancy-break and seasonal temperature changes. Results showed that embryo length increased by about 330% before radicle emergence, and radicle emergence and shoot growth occurred in early October after seed dispersal. Shoot emergence was delayed until February when the temperature began to increase. ABA and GA analyses suggested that root dormancy might be due to high ABA content and shoot dormancy to low GA content.
ENVIRONMENTAL AND EXPERIMENTAL BOTANY
(2022)
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
Plant Sciences
Guoyan Wang, Carol C. Baskin, Jerry M. Baskin, Xuejun Yang, Guofang Liu, Xuehua Ye, Zhenying Huang
Summary: The timing of seed germination in alpine plants is regulated by dormancy, with seeds needing to germinate early in the spring to ensure seedlings can grow to a critical size during the short growing season. Factors such as burial time and dormancy cycle affect the germination timing and season, with seeds remaining dormant until optimal conditions for growth are met.
ENVIRONMENTAL AND EXPERIMENTAL BOTANY
(2021)
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)
Article
Plant Sciences
Malaka M. Wijayasinghe, K. M. G. Gehan Jayasuriya, C. V. S. Gunatilleke, I. A. U. N. Gunatilleke, Jeffrey L. Walck
Summary: Mangroves are vital ecosystems that have been significantly disrupted. This study aimed to provide a seed dormancy profile for mangrove species in Sri Lanka, which would aid restoration efforts. The findings identified different dormancy classes and provide valuable information for conservation and restoration activities.
SEED SCIENCE RESEARCH
(2023)
Article
Plant Sciences
Lei Zhang, Chaohan Xu, Huina Liu, Qingqing Wu, Jun Tao, Keliang Zhang
Summary: This study found that the seeds of Aconitum barbatum are in a state of undeveloped embryo dormancy, and natural winter cold stratification can break seed dormancy and promote germination in the following growing season.
Article
Agronomy
Lei Zhang, Chaohan Xu, Huina Liu, Jun Tao, Keliang Zhang
Summary: The timing of seed germination has a significant impact on plant fitness and life cycle. This study aimed to understand the dormancy type and identify the conditions necessary for breaking seed dormancy and promoting germination in Torilis scabra. The results showed that the seeds of T. scabra had non-deep simple morphophysiological dormancy and cold stratification and GA(3) treatment were effective in breaking dormancy.
Article
Forestry
Xi-Qing Sun, Yi-Gang Song, Bin-Jie Ge, Xi-Ling Dai, Gregor Kozlowski
Summary: The study revealed a previously unreported type of epicotyl physiological dormancy in the seeds of Quercus chungii, characterized by an early root emergence followed by delayed shoot emergence. This mechanism may be a strategy to ensure a constant water supply to the emerging plumule during development.
Review
Horticulture
Chenyin Peng, Yu Wu, Fenghou Shi, Yongbao Shen
Summary: Certain substances called germination inhibitors can inhibit the germination of seeds. They can be classified as germination destructors or germination retarders, with the former causing harm to the seed and the latter being closely related to seed dormancy. These inhibitors have important applications in seed preservation and herbicide use.
Article
Plant Sciences
Yuan Song, Mingyi Zhang, Yun Guo, Xiaoye Gao
Summary: Seed dormancy in Korean pine is characterized by a combination of morphological and physiological dormancy. The physiological dormancy is gradually released during the first winter, reinduced in the first summer, and broken again in the second autumn and winter. The morphological dormancy is slowly released over the first summer and rapidly broken during the second autumn. In the second spring, Korean pine seeds completely escape from morphophysiological dormancy.
JOURNAL OF PLANT ECOLOGY
(2023)
Article
Agronomy
Keliang Zhang, Yusong Ji, Guixian Fu, Linjun Yao, Huina Liu, Jun Tao, Jeffrey L. Walck
Summary: Research shows that seeds of Aquilegia oxysepala have underdeveloped embryos and physiological dormancy at dispersal. As the cold stratification period increased, the germination of A. oxysepala gradually improved. Physiological dormancy was broken in winter under natural temperatures, while embryo growth and seed germination occurred in early spring.
Article
Plant Sciences
Thomas Martin Arceo-Gomez, Erika Robles-Diaz, Mayra D. Manrique-Ortega, Angel Roberto Martinez-Campos, Jose Luis Aragon-Gastelum, Francisco Javier Aguirre-Crespo, Jorge E. Ramirez-Albores, Marlin Perez-Suarez, Rafael Robles, Javier Reyes-Trujeque, Aaron A. Can-Estrada, Eduardo J. Gutierrez-Alcantara, Bardo H. Sanchez-Soto, Pedro Zamora-Crescencio
Summary: The study focused on Enterolobium cyclocarpum and Piscidia piscipula seeds, examining their permeability, imbibition rate, and response to pre-germinative treatments. Both species showed high viability, with E. cyclocarpum having low permeability and imbibition rate. Mechanical scarification promoted germination in E. cyclocarpum, while a 10-second boiling water treatment was optimal for P. piscipula. The presence of physical dormancy was confirmed in both species.
Article
Horticulture
Keliang Zhang, Yusong Ji, Xiaomei Song, Linjun Yao, Huina Liu, Jun Tao
Summary: Seed germination and dormancy are crucial for the regeneration strategy of plants. This study focused on the dormancy characteristics and regeneration strategies of Clematis hexapetala seeds, revealing deep complex morphophysiological dormancy in freshly matured seeds. Natural cold stratification in winter breaks dormancy and allows the seeds to germinate at the start of the next growing season.
SCIENTIA HORTICULTURAE
(2021)
Article
Horticulture
Javier Sanchez, Francisco Albornoz, Samuel Contreras
Summary: This study investigated the effect of nitrogen fertilization on tomato seed yield and quality. The results showed that increasing nitrogen fertilization led to a decrease in seed weight, but had no effect on standard germination and mean germination time. The germination percentage and rate decreased when seeds were immersed in solutions with reduced osmotic potential, but this effect was less pronounced in seeds from the high nitrogen treatment. Additionally, seeds from the high nitrogen treatment exhibited greater longevity when evaluated after accelerated aging.
Article
Plant Sciences
Eduardo Fernandez-Pascual, Angelino Carta, Andrea Mondoni, Lohengrin A. Cavieres, Sergey Rosbakh, Susanna Venn, Annisa Satyanti, Lydia Guja, Veronica F. Briceno, Filip Vandelook, Efisio Mattana, Arne Saatkamp, Haiyan Bu, Karen Sommerville, Peter Poschlod, Kun Liu, Adrienne Nicotra, Borja Jimenez-Alfaro
Summary: Assumptions about the germination ecology of alpine plants are currently based on individual species and local studies, but a meta-analysis of primary data across four continents suggests that most alpine plants have similar seed germination patterns, with strong requirements for cold stratification and positive responses to temperature and light cues.