Gibberellins (gas) are plant hormones that regulate various developmental processes, including stem elongation, germination, dormancy, flowering, flower development and leaf and fruit senescence gas are one of the longest-known classes of plant hormone. 1- effect of ga3 on seed germination and seedling growth of loquat the germination percentage results for the loquat seeds treated of the ga3 and control are summarized in table (1), the percentage differences between treatments and control are significance during germination at. In the different parts of c melo and lagenaria breviflora (l breviflora) (epicarp, mesocarp and seed) were not significantly different the concentrations of the phytochemicals were significantly (pseeds of the cucurb its except. Analysis of variance showed that hormones type, time of seed priming and hormone concentration had significant effect in root, seedling length, germination percent and seedling dry weight (p1, 5%) (table 1.
In order to understand the allelopathic potential of garlic, the effects of its main bioactive allelochemical diallyl disulfide (dads), experiments were carried out to observe the seed germination, root growth, and developmental responses in cucumber seedlings treated with various concentrations of dads. Stratification during the stages of seed germination therefore, this study carried out between seeds of marcona, rabie, supernova, perlis, d99, k-66 domesticated almond varieties to evaluate their hormonal [abscisic acid. Abstract smoke-water is a chemical extract used to stimulate the germination of many plant species under cultivation this study evaluated the efficacy of smoke-water on the seed germination and seedling growth of papaya (carica papaya cv tainung no 2. A plant growth hormone that the most important role in the control of seed germination is facilitated the discovery of phytohormones has proved to be a great boon to agriculture and allied fields.
The extract at different concentrations was incubated in controlled conditions with the surface sterilized seeds of c arietinum and t aestivum and observed periodically for seed germination and radicle growth to assess the allelopathic behavior. It was established that high concentrations of various phenolic compounds (ferulic, gallic, p-hydroxybenzoic acid and p-vanillin) prevented seed germination of six different types of wild herbs lower concentrations of these compounds, on the other hand, were seen either to remain ineffective or to show a stimulator effect (regiosa et al , 2004. The reason for diminish in seed germination of plant in the presence of high concentrations of heavy metal could be due to the accelerated breakdown of stored food materials in seed [21,6] and or be due changes of selection permeability properties of cell membrane [21. Amended with different concentrations of metals and germination rate was determined the data was statistically analyzed by one-way analysis of variance (anova) using.
Ansari et al seeds were more sensitivity in a higher concentration of -10bar the effect of different treatments seed priming on germination characteristics and enzyme activity in. Abstract: the experiment was undertaken with an objective to determine how the rate of seed germination and seedling growth can be influenced by various concentrations of growth regulators ie ga 3 and iaa in black gram. Dicate that seed germination is determined by the net effect of multiple hormones and suggest the presence of crosstalk among actions by ga, aba, ethylene, and br. Table 2: effect of different allelochemicals on germination start of coronilla varia seeds average comparison performed using of duncan's test at the 001 average comparison performed using of duncan's test at the 001.
And the concentrations of hormone solutions were significant (001%) soaking the seeds in 8 and 6 ppm of cytokinin solutions had the highest effect on duration of radicles growth (775 and 55 days respectively) and. We used 10, 15, 18, and 21% of peg to have an osmotic potential comparable to that of nacl at the concentrations of 50, 100, 150, and 200 mm that we tested on seed germination of the same cultivars in a previous work (sidari et al 2008 sidari m, santonoceto c, anastasi u, preiti g, muscolo a 2008. In addition to the effects of plant hormones on seed germination researchers have found that both under stress and non-stress conditions, n compounds, including nitrous oxide can enhance seed germination through enhancing amylase activities (zhang et al, 2005, hu et al, 2007, zheng et al, 2009. The effect of different hormone concentrations were highly significant (p≤005) on mean height growth of t tetraptera seedlings, seedlings collar diameter and number of leaves different growth hormone concentration had no significant (p≥005) effect on leaf dry weight, stem dry weight, root dry weight and total dry weight.
Abstract the purpose of this study was to investigate the effects of different treatments on seed germination in the desert plant species calotropis persica (gand) this species is known to have long time for seed germination considering arid region condition and short time of access moist. The treated seed germination rates under drought stress were measured (tables 1, 2, 3, and 4) in order to identify the optimal concentrations of peg, 6-ba, iaa or ga3 that would be suitable for seed germination. Plant hormones affect seed germination and dormancy by acting on different parts of the seed embryo dormancy is characterized by a high aba:ga ratio, whereas the seed has a high aba sensitivity and low ga sensitivity.
Seed dormancy and germination are regulated by several plant hormones, such as abscisic acid, gibberellin, auxin (indole-3-acetic acid), ethylene, and brassinosteroid endogenous concentrations of a hormone are determined by the balance between biosynthesis and deactivation, and contribute to the regulation of physiological responses. To investigate the net effect of pil5 on br signaling during seed germination, we measured the germination frequency of ga1 and pil5 ga1 seeds in the presence of various concentrations of 24-epibrassinolide (ebr) following the application of a far-red pulse.
Despite the well-documented role of aba as a negative regulator of seed germination, we observed that h 2 o 2 treatment had little effect on aba levels, and a significant decrease in aba was only noticed at 12 h of h 2 o 2 imbibition. The hormones, ga 3, iaa and naa used at various concentrations 100, 200, 300, 400 and 500 ppm exerted the same effect on the percentage germination and seedling vigour of c melo, l breviflora and c lanatus seeds. Effects of different plant hormones or peg seed soaking on maize resistance to drought stress zhiheng yuan, chuntian wang, shipeng li, xiao li, and fuju tai1 state key laboratory of wheat and maize crop science, collaborative innovation center of henan grain crops. Seed germination and seedling establishment of two cowpea varieties it87d-941-1 (ipi) and kanannado (lpi) were carried out in the laboratory in kano, nigeria under the prevailing laboratory conditions of 25±2°c and 45-60% relative humidity.