determination of cardinal temperatures during seed germination and emergence as well as the thermal time requirement for each stage is essential in crop management and modeling of plant growth and development. two experiments were conducted to predict cardinal temperatures and thermal time requirement for germination and emergence of chickpea genotypes. in the first experiment, seed germination...

abstract wild lettuce (lactuca serriola) is an annual weed with seed reproduction. an experiment was conducted to evaluate some environmental effects on germination and emergence of this weed. the type of design was completely randomized with four replications in which factors were arranged as factorial. the experiment was carried out with 11 cm petri dishes in a germinator (10 °c) and without ...

in order to evaluation the effect of drought stress on germination indices and early seedling growth of medicinal herb dill (anethum graveolens l), an experiment was conducted in the agricultural laboratory of urmia payam noor university in 2015 as a randomized complete block design with four replications. treatments were five levels of drought stress (0, -1, -2, -3 and -4 bar induced by polyet...

in‏ ‏order‏ ‏to‏ ‏study‏ ‏chamomile‏ ‏tolerance‏ ‏to‏ ‏salinity‏ ‏and‏ ‏find‏ ‏a way‏ ‏to‏ ‏increase‏ ‏its‏ ‏tolerance‏ ‏afactorial‏ ‏experiment‏ ‏was‏ ‏conducted‏ ‏in‏ ‏acompletely‏ ‏randomized‏ ‏design‏ ‏with‏ ‏three‏ ‏replications‏ ‏in‏ ‏‎2012.‎‏ ‏seeds‏ ‏primed‏ ‏with‏ ‏salicylic‏ ‏acid‏ ‏and‏ ‏gibberellic‏ ‏acid‏ ‏‎(ga)‎‏ ‏at‏ ‏‎250‎‏ ‏ppm‏ ‏by‏ ‏a‏ ‏combination‏ ‏of‏ ‏the treatments‏ ‏at‏...

This research was conducted to assessment effect of different concentrations of sodium hypochlorite along several times on quantitative parameters of wheat seeds affected by Aspergillus flavus fungus via factorial experiment according randomized complete block design with four replications. The treatments consisted four concentrations of sodium hypochlorite or NaClO (C1= 2%, C2= 4%, C3= 6%, and...

• Seed dormancy can affect life history through its effects on germination time. Here, we investigate its influence on life history beyond the timing of germination. • We used the response of Arabidopsis thaliana to chilling at the germination and flowering stages to test the following: how seed dormancy affects germination responses to the environment; whether variation in dormancy affects adu...

Six parents of Jatropha curcas were crossed in half diallel fashion, and the F 1s were evaluated to determine the combining ability for nine germination parameters. The ratio between general combining ability (GCA) and specific combining ability (SCA) variances indicated preponderance of additive gene action for all the characters except germination percentage, time of 50% germination, seedling...

Seeds vary widely in the sensitivity of germination to oxygen (O2) partial pressure, depending upon the species, temperature, dormancy state and physiological status of the seeds. Most analyses of the O2 sensitivity of germination have focused on final germination percentages and estimated the O2 percentage in air that is required to reduce germination to a given percentage (usually 50%). In co...

in order to assess the genetic variability for seed germination parameters under salt stress in sunflower and corresponding qtl locations, an experiment was conducted using a population of 80 recombinant inbred lines obtained from a cross between pac2 and rha266. the experiment was arranged under a randomized complete block design with three replications in control and saline conditions. severa...