نتایج جستجو برای: sphenocentrum jollyanum seed

تعداد نتایج: 76472  

Journal: :The Plant journal : for cell and molecular biology 2012
Lin Shi Vesna Katavic Yuanyuan Yu Ljerka Kunst George Haughn

Seed oil, one of the major seed storage compounds in plants, is of great economic importance for human consumption, as an industrial raw material and as a source of biofuels. Thus, improving the seed oil yield in crops is an important objective. The GLABRA2 (GL2) gene in Arabidopsis thaliana encodes a transcription factor that is required for the proper differentiation of several epidermal cell...

2012
Qiao-Ling Yan Jiao-Jun Zhu Li-Zhong Yu

Promoting the seed regeneration potential of secondary forests undergoing gap disturbances is an important approach for achieving forest restoration and sustainable management. Seedling recruitment from seed banks strongly determines the seed regeneration potential, but the process is poorly understood in the gaps of secondary forests. The objectives of the present study were to evaluate the ef...

Journal: :The American naturalist 2007
C J Clark J R Poulsen D J Levey C W Osenberg

We examine the relative importance of processes that underlie plant population abundance and distribution. Two opposing views dominate the field. One posits that the ability to establish at a site is determined by the availability of suitable microsites (establishment limitation), while the second asserts that recruitment is limited by the availability of seeds (seed limitation). An underlying ...

2017
Nan Zhao Ruijie Yang Li Ren Yi Fan Junli Li Jianguo Zhang

PURPOSE To investigate the dosimetric characteristics of the new GMS BT-125-1 125 I radioactive seed, including dose rate constant, radial dose functions, and anisotropy functions. METHODS Dosimetric parameters of GMS BT-125-1 125 I seed including dose rate constant, radial dose functions, and anisotropy functions were calculated using the Monte Carlo code of MCNP5, and measured with thermolu...

2013
Robert Tripp

Ghana’s seed sector has undergone some significant changes in the past few years, including the establishment of a new seed law and regulations, the appointment of a National Seed Council, and the emergence of a more diversified commercial seed sector. This paper begins by reviewing the principal elements in Ghana’s commercial seed sector. It then examines three factors that will be critical to...

Journal: :The Plant journal : for cell and molecular biology 2010
Helen North Sébastien Baud Isabelle Debeaujon Christian Dubos Bertrand Dubreucq Philippe Grappin Marc Jullien Loïc Lepiniec Annie Marion-Poll Martine Miquel Loïc Rajjou Jean-Marc Routaboul Michel Caboche

Seeds play a fundamental role in colonization of the environment by spermatophytes, and seeds harvested from crops are the main food source for human beings. Knowledge of seed biology is therefore important for both fundamental and applied issues. This review on seed biology illustrates the important progress made in the field of Arabidopsis seed research over the last decade. Access to 'omics'...

2009
Kitae Jeong Joongeun Choi Yuseop Lee Changhoon Lee Jaechul Sung Haeryong Park Yeonjung Kang

SEED is a 128-bit block cipher with a 128-bit secret key. Since it supports only a 128-bit secret key, it is difficult to apply this algorithm to various environments. In this paper, we propose SEED192/256 which support 192/256-bit secret keys, respectively. Also we evaluate the security these algorithms against well-known attacks and the software performance of them on PC environments.

Journal: :Proceedings. Biological sciences 2007
Adam M Siepielski Craig W Benkman

The importance of infrequent events for both adaptive evolution and the evolution of species interactions is largely unknown. We investigated how the infrequent production of large seed crops (masting) of a bird-dispersed tree (whitebark pine, Pinus albicaulis) influenced phenotypic selection exerted by its primary avian seed predator-disperser, the Clark's nutcracker (Nucifraga columbiana). Se...

2002
Jean J. Turgeon Alain Roques Peter de Groot

Tree reproductive structures-pollen and seed cones, or microand mega­ sporangia-represent an extremely rich source of food for many animals (166). Although some species exploit pollen cones (189), in this review we deal exclusively with those exploiting seed cones prior to seed dispersal. Insects are considered the most important seed predators during the predispersal phase of seed development ...

2017
Surendra P Singh Shyam S Phartyal Sergey Rosbakh

Seed traits are related to several ecological attributes of a plant species, including its distribution. While the storage physiology of desiccation-sensitive seeds has drawn considerable attention, their ecology has remained sidelined, particularly how the strong seasonality of precipitation in monsoonal climate affects their temporal and spatial distribution. We compiled data on seed mass, se...

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