selection of an appropriate model is important for quantifying response of germination rate to temperature and determination of cardinal temperatures. this study was done to evaluate different nonlinear regression models to describe response of germination rate to temperature in medicinal pumpkin, borago and black cumin. the regression models were dent-like, segmented, beta, curvilinear, quadra...

Hybridization between crops and their weedy or wild relatives is an area of concern because the widespread use of genetically engineered crops may allow novel, bene®cial transgenes to enter nearby populations. We compared ®tness components of wild Cucurbita pepo from Arkansas, USA, with wild±crop hybrids derived from yellow squash (a cultivar of C. pepo with transgenic resistance to two viruses...

Objective: In this study investigated effects of different amounts of pelleted manure with urea and micro elements on yield and seed quality of medicinal plants, pumpkin (Cucurbita pepo var. styriaca). Methods: The animal manure and urea as pellet with four levels (150 Kg urea, 50 Kg urea + 3.5 ton animal manure, 100 (Kg) urea+ 1.5 ton animal manure and 150 (Kg) urea+1.5 ton animal man...

Microorganisms are ubiquitous and thought to regulate host populations. Although microorganisms can be pathogenic and affect components of fitness, few studies have examined their effects on wild plant populations. As individual traits might not contribute equally to changes in population growth rate, it is essential to examine the entire life cycle to determine how microorganisms affect host p...

Cucurbita species can be affected by soil-borne pathogens, such as Phytopthora capsici and Fusarium solani f. sp. cucurbitae (Fsc). Diverse commercial conserved lines of spp. were tested. C. pepo subsp. genotypes showed the highest susceptibility to both pathogens. The tolerance P. Fsc was then screened in a zucchini mutant population. Two M3 (Cp107 Cp116) with high occurrence tolerant individu...

background and objectives: cucurbita pepo l. is a one-year creeper plant with wide heart shaped leaves covered by tiny trichome with many benefits in its fruit, seed, leaf and root. currently some studies has been directed to show its preventive and curetive properties for some diseases as an alternative or supplement for other methods. the purpose of present study was to investigate the mentio...