نتایج جستجو برای: physiology of seeds

تعداد نتایج: 21170891  

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2001
R M Bringhurst Z G Cardon D J Gage

Identifying the types and distributions of organic substrates that support microbial activities around plant roots is essential for a full understanding of plant-microbe interactions and rhizosphere ecology. We have constructed a strain of the soil bacterium Sinorhizobium meliloti containing a gfp gene fused to the melA promoter which is induced on exposure to galactose and galactosides. We use...

Journal: :The Plant cell 2007
Neal D Teaster Christy M Motes Yuhong Tang William C Wiant Matthew Q Cotter Yuh-Shuh Wang Aruna Kilaru Barney J Venables Karl H Hasenstein Gabriel Gonzalez Elison B Blancaflor Kent D Chapman

N-Acylethanolamines (NAEs) are bioactive acylamides that are present in a wide range of organisms. In plants, NAEs are generally elevated in desiccated seeds, suggesting that they may play a role in seed physiology. NAE and abscisic acid (ABA) levels were depleted during seed germination, and both metabolites inhibited the growth of Arabidopsis thaliana seedlings within a similar developmental ...

Journal: :desert 2011
h. abbasdokht

in order to study of hydropriming and halopriming on germination and early growth stage of wheat (triticum aestivum l.) an experiment was carried out in laboratory of the department of agronomy and plant breeding, shahrood university of technology. seed treatments consisted of t1: control (untreated seeds), t2: soaking in distilled water for 18 h (hydropriming). t3: soaking in -1.2 mpa solution...

Esfandiar Hassani Moghaddam Ezatollah Nabati Mahdi Shaaban, Zahra Rahmati Motlagh

BACKGROUND: The active oxygen species, despite the damaging effects they have useful roles in the body are living things. OBJECTIVES: This research was done to determine whether Reactive Oxygen Species (ROS) could mediate Cyanide and Methylviologen signal in seed dormancy alleviation and sunflower seed germination, more widely, to assess their putative ro...

Journal: :Zeitschrift fur Naturforschung. C, Journal of biosciences 2012
Juliana da Silva Pacheco Raquel Elisa da Silva-López

The characterization of legume proteases contributes to the understanding of the physiology of plants and their interaction with the environment. Thirteen extracts from various parts of Crotalaria spectabilis were made using different extraction systems. The highest protein content was found in seeds, and the most pronounced proteolytic activity was observed in leaf extracts, with an optimal pH...

Journal: رستنیها 2003
B. SH. BEHBODY H. SALIMI, M. GHORBANLI N. SHAHRAEEN

The structural differences between  dormant and nondormant seeds of wild oats (Avena ludoviciana Durieu) were studied by light and transmission electron microscopy. Radial elongation of  scutellum epithelial cells were observed in nondormant seeds after imbibition, compared with dormant seeds in which cells were completely compressed. Ultrastructural differences for example, dilution of cytopla...

Journal: :international journal of environmental research 2013
w.s. tavares m.f. souza-filho e.l. araujo j.e. serrão j.c. zanuncio

anastrepha bezzii (diptera: tephritidae) larvae are common inside fruits of sterculia chicha (malvaceae) in minas gerais state, brazil. the seed dormancy and attack by a. bezzii of the native species s.chicha can be detrimental to seed germination and thus the natural spread of this plant. the objectives of the current study were to compare ecological observations of a. bezzii and s. chicha in ...

Journal: :journal of medical education 0
s.s s.s.mazloomi

background. acquiring and recalling knowledge can be considered as the starting point of learning; so increasing the acquisition of knowledge and information recall is one the most important goals of education. objective. to determine the students’ information recall in the basic courses of histology, immunology, physiology, biochemistry, head and neck anatomy, and microbiology in dentistry sch...

This study was conducted to evaluate the effect of hydropriming and seed aging on germination and enzymatic properties of pinto bean under salinity stress as factorial based on a completely randomized design with four replications. Two groups of seeds (i.e., non-aged and aged seeds), two hydropriming treatments (i.e., hydro primed and unprimed seeds) and six salinity treatments (i.e., 0, 2, 4, ...

Journal: Desert 2014

To study the effects of halopriming and hydropriming in overcoming salt and drought stress in corn (Zea mays L.),two experiments were separately conducted at Shahrood University of Technology. Seed treatments consisted ofcontrol (untreated seeds), soaking in distilled water for 32 h (hydropriming), and soaking in 50 mmol solution ofCaCl2 for 16 h (halopriming). Germination and early seedling gr...

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