نتایج جستجو برای: the lowest germination percentage 7836

تعداد نتایج: 16062416  

Journal: :پژوهش های زراعی ایران 0
راهله رهباریان رمضانعلی خاوری نژاد علی گنجعلی عبدالرضا باقری فرزانه نجفی

in order to study, the effects of drought stress on germination and seedling growth of chickpea genotypes, experiments were carried out on two susceptible genotypes (mcc68, mcc448) and two resistant genotypes (mcc392, mcc877). in the first experiment the seeds were sown under different levels of drought stress (0,-0.4,-0.8,-1.2mpa) in 25◦c at the growth chamber with 4 replication. the results s...

F. Rejali H. Zakizadeh K. Gholamipour Fard M. Ghasemnezhad, M. Kafi

Lead (Pb) is one of the most hazardous heavy metal that caused serious problems for ecosystem at recent years. In this study, the effect of Pb on seed germination, incipient growth and antioxidant enzymes of six common used turfgrasses was investigated. The results showed that after implementation of different concentrations (0, 1000, 2000 and 3000 µM) of Pb, Agropyron elongatum exhibited the h...

Journal: :desert 2010
f. hamedanian mohamad jafari a. henteh mohamad ali zare chahouki s. dehdari

abstract one basic method of improving rangelands in a country is the use of native as well as exotic species of plants adaptable. among the but introduced species, atriplex canescens has been introduced in many rangelands, but it is important and necessary to consider it’s effects on native species. in the current study the effect of chemical competition (allelopathy) of atriplex canescens on ...

DOR: 98.1000/2383-1251.1398.6.115.11.1.1575.1610 Extended Abstract Introduction: In recent years, Japanese morning glory has been recognized as a new weed in some soybean cultivation areas in the Province of Golestan. Japanese morning glory, an annual herbaceous plant, belongs to Convolvulaceae family. Germination is the first step in the competitiveness of a weed in an ecological niche. ...

Journal: Desert 2010
a. Henteh f. hamedanian mohamad ali Zare chahouki mohamad Jafari s. Dehdari

Abstract One basic method of improving rangelands in a country is the use of native as well as exotic species of plants adaptable. Among the but introduced species, Atriplex canescens has been introduced in many rangelands, but it is important and necessary to consider it’s effects on native species. In the current study the effect of chemical competition (allelopathy) of Atriplex canescens o...

Journal: :مجله تازه های بیوتکنولوژی سلولی - مولکولی 0
غلامرضا بخشی خانیکی gholamreza bakhshi khaniki tehran payame noor university, tehran – iranگروه زیست شناسی دانشگاه پیام نور ، تهران – ایران مریم فخری maryam fakhri tehran payame noor university, tehran – iranگروه زیست شناسی دانشگاه پیام نور ، تهران – ایران

aim and background: capparisspinosa l. is considered as one of the most significant plant species in the capparaceae. this plant is one of the most important medicinal plants and has a great ability to stabilize sand dune. seeds of this plant have germination problems. the aim of this research is to determine germination percentage of capparisspinosa according to different duration of chilling ...

شیرانی راد, امیرحسین, چگنی, همایون, کافی, محمد, گلدانی, مرتضی,

Accelerated aging test to estimate the percentage of emergence are designed to lay the seeds for life, as well as an indicator to determine the power of the seed used. In this study, the effects of aging zero (control), 2, 4 and 6 days on germination index of rapeseed genotypes including Okapi, R15, BAL11, L109, BAL2 Were detected in a factorial experiment based on completely randomized design ...

Kelussia odoratissima Mozaff. belonging to the Apiaceae family, is well known for its medicinal and nutritional importance, endemic to Iran. Seed dormancy is a major problem present in Kelussia odoratissima leading to low germination percentage; thus, improvement of seed germination and breaking seed dormancy is important. Piriformospora indica, a root-colonizing endo...

2009
M. M. Heikal

Environmental stress, especially drought stress, can play an important role in the reduction of the plant growth stage, specifically duringgermination in arid and semi arid regions in Iran.. In order to study the effects of drought stress on germination indices in wheat cultivars, an experiment was conducted in factorial form, using a completely randomized design of four replications. In this e...

Germination is the first and the most stages for sainfoin (Onobrychis viciifolia) growth; which it has especially sensitivity to environmental stresses such as alkalinity. The current study was conducted to evaluate the effectiveness of seed pre-treatment methods on improving sainfoin tolerance to alkali stress in germination, early growth and its recovery as a factorial experiment based o...

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