نتایج جستجو برای: sowing
تعداد نتایج: 6024 فیلتر نتایج به سال:
Irradiated pollen technique is the most successful haploidization technique within Cucurbitaceae. After harvesting of fruits pollinated with irradiated pollen, classical method called as "inspecting the seeds one by one" is used to find haploid embryos in the seeds. In this study, different methods were used to extract the embryos more easily, quickly, economically, and effectively. "Inspecting...
The effects of Chickpea (Cicer arietinum L.) varieties, and sowing dates on weed interference were investigated in a 2-year (2002-3, and 2003-4 growing season) field experiment in Agricultural Research Station of Kohdasht in Lorestan Province. The experimental design was a randomized complete block in factorial arrangement with 3 replications. The experiment had 3 factors: weed interference at ...
In order to evaluate the effects of plastic bed mulch and sowing date on early maturity, growth and yield of Ahvazi-Okra and obtaining the highest production during the peak price period, an experiment was executed in Agricultural and Natural Resources Research Center of Khuzestan. The experiment was laid out as split plot design in RCBD with four replications. Four sowing dates including Feb. ...
ABSTRACT Development of 108 epidemics of Fusarium wilt of chickpea caused by Fusarium oxysporum f. sp. ciceris were studied on cvs. P-2245 and PV-61 in field microplots artificially infested with races 0 and 5 of F. oxysporum f. sp. ciceris in 1986 to 1989. Disease progression data were fitted to the Richards model using nonlinear regression. The shape parameter was influenced primarily by date...
We test for the existence of a Poverty Nutrition Trap (PNT) in the case of five important micronutrientscalcium, carotene, iron, riboflavin, and thiamine, for three categories of wages: sowing, harvesting, and other for male and female workers separately. We use household level national data for rural India for the period January to June 1994 and robust sample selection procedures due to Heckma...
Herbivory can aff ect plant community composition and diversity by removing biomass and reducing light competition. Herbivory may particularly benefi t low growing species such as bryophytes, which are frequently limited by light competition. Gastropods are important herbivores of seed plants and cryptogams, furthermore, they can disperse propagules such as seeds and spores via endozoochory. Ho...
Background and aim: The genus Satureja L. (Lamiaceae) includes 12 species of annual and perennial herbaceous plant in Iran. Satureja species have economic and medicinal importance because of their high essential oil content. In addition, they are used as culinary herbs and in the food, perfume and cosmetic industries. The aim of this study was to inve...
In order to study the effect of sowing date on grain yield and grain-filling duration of triticale cultivars, an experiment was conducted based on strip-plot experiment with four replicates at Ramin Agricultural Research and Educational Center (RAREC) during 2009-10. The sowing date treatments were November, 10th (Aban, 20th) and December, 4th (Azar, 14th) and the cultivars include: ET.79-3،ET....
Using a multimodel inference approach, the most relevant field-level and landscape context factors explaining the simultaneous variability of bird, carabid and weed species richness were identified and interpreted in a low-intensity cereal farming system in central Spain. Weed species richness was negatively influenced by sowing density, herbicides and surroundingmean field size. Carabid specie...
Benzyladenine (BA) treatment was found to induce chloroplast DNA (ctDNA) synthesis after it had stopped in primary leaves of light-grown intact bean plants (Phaseolus vulgaris L.). The leaves were treated with BA from 7 days after sowing. Chloroplasts were isolated and the ctDNA content per chloroplast was determined. Chloroplast division occurred until 13 days after sowing in untreated leaves....
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