نتایج جستجو برای: germination speed

تعداد نتایج: 228639  

Seed priming is a common way to increase the speed and uniformity of germination under Under stress and non-stress conditions. The aim of this study was to investigate the effects of different levels of gibberellic , salicylic and ascorbic acid on improvement of germination indices of Zygophyllum atriplicoides under salt stress in laboratory Chemical stimulators used in this study include: 3 le...

2016
Karl Morris Guy C. Barker Peter G. Walley James R. Lynn William E. Finch‐Savage

Predictable seedling establishment is essential for resource-efficient and cost-effective crop production; it is widely accepted as a critically important trait determining yield and profitability. Seed vigour is essential to this, but its genetic basis is not understood. We used natural variation and fine mapping in the crop Brassica oleracea to show that allelic variation at three loci influe...

2016
Raquel Maria de Oliveira Pires Genaina Aparecida de Souza Amanda Ávila Cardoso

The objective of this paper was to evaluate the effect of nitric oxide (NO) as a protecting agent of sesame seeds submitted to different concentrations of cadmium. The treatments were: water (control), water increased by sodium nitroprusside (SNP) and other treatments regarding the concentrations of cadmium increased by SNP. The following determinations were done: germination, first count of ge...

Given the medicinal and ornamental properties of Hawthorn (Crataegus spp.), and given that there are some problems in its propagation, which is due to the hard cover of the seeds and immature embryo, working out techniques that can facilitate the process of seeds’ germination is of great import. Thus, the present study sought to identify the best method for the purpose of breaking the see...

ژورنال: مرتع 2021
Karimian, Vahid, Khatibi, Rasool, Saberi, Moteza,

The present study conducted to investigation the forage quality and germination status of Capparis spinosa in Niatak Hirmand rangelands. Forage quality indices were analyzed by four replications on three phenological stages (vegetative, flowering and maturity stages) randomly. The experiment included 19 treatments to improve seed germination condition. Treatments included physical such as scrap...

Journal: :Khulna University studies 2022

The experiment was conducted during October 2014 to December evaluate the effect of different levels salinity on seed germination and seedling growth sunflower. factorial consists three variety sunflower such as BRAC HySun 33, BARI sunflower-2, KU SL-1 five viz. 4, 8, 12, 16 dS m-1 with control. salt stress were varied significantly. (germination energy, capacity speed germination) parameters (...

Journal: :Revista Ceres 2022

The objective was to evaluate the quality of sunflower seeds classified according their thickness and passed through seeder-fertilizer dosing system under variation travel speed. A lot M734 by passing a set oblong-hole sieves two thicknesses were selected. portion with only commercial classification also reserved, named as non-classified. biometric evaluation done sowing carried out at 5.0, 6.5...

Journal: :فصلنامه علمی اکوفیزیولوژی گیاهان زراعی 0

seeds of most herbs such as medicinal plant alyssum bracteatum are known to have a dormancy period in a natural condition. therefore, the identification of factors affecting seed dormancy and germination in order to create optimum conditions for large-scale cultivation of medicinal plants is necessary. the survey was conducted at the research laboratory of biology, university of lorestan in aut...

Journal: :جنگل و فرآورده های چوب 0
بهرام ناصری اولویت بندی زمانی، بهره‏برداری جنگل، سیل‏خیزی، شبیه‏سازی سیلاب، مدل hec-hms. مسعود طبری کوچکسرایی استاد گروه جنگل داری، دانشگاه تربیت مدرس، نور، ایران

dormancy breaking of field maple (acer campestre l.) seed, by gibberllic acid (ga3) at 0, 250, 500 and 1000 ppm in 24 and 48 hours and stratification treatments in moist sand under warm (18-20 °c) and cold (2-4°c) conditions were investigated. effects of ga3 and stratification and their interaction on germination percent (gp) and germination speed (gs) were significant. the highest gp occurred ...

ژورنال: علوم آب و خاک 2007
علی احمدی, , کاظم پوستینی, , محسن سعیدی, , محمدرضا جهانسوز, ,

Soil moisture is one of the most important determinants of plant’s seed germination, emergence and finally yield formation in arid and semi-arid zone (e.g. IRAN). In such a situation, the selection of a cultivar resistant to drought is the most important task. In this regard, a research at three levels (Farm, Greenhouse, Laboratorial) was conducted to study 10 genotypes with three improved back...

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