Effect of priming duration and concentration on germination behaviors of (Phaseolus vulgaris L.) seeds

摘要

Seed germination and seedling establishment have important role in crop production. To evaluate the effect of priming and duration on some germination characteristics of cultivars of Pinto bean Factorial an experiment was conducted in a completely randomized design with three replications in the laboratory of College of Agriculture, Shiraz University. Treatments include Pinto bean varieties at three levels (E9, E10, and Khomain), Prime at six levels (polyethylene glycol (PEG) -5 bar, salicylic acid 500mg/L, potassium chloride -20 mM calcium chloride -15 and sodium chloride -15 mM) and duration at four levels (3, 6, 9 and 12 hours). The results showed that the interaction between priming and duration had a significant effect on germination rate, germination percentage, root dry weight, shoot dry weight, seedling weight vigor index and coefficient allometry. The interaction between priming and cultivar had significant effect on germination rate, germination percentage and seedling weight vigor index. Shoot and root dry weight was significantly affected by the interaction between (duration and variety) on the results of priming with water and salicylic acid at 12 hours and priming with potassium chloride, sodium chloride, calcium chloride and polyethylene glycol at three and six hours compared to control can improve the whole characteristics of germination. Finally priming with availability and the appropriate water improved germination percentage, germination rate, radicle and plumule dry weight, weight seedling vigor index, ratio dry weight radicle to plumule Compared with without primed seeds. Study on the interaction between priming and duration indicated that the preparation seeds with primed according to duration it can lead to a significant increase in germination characteristics of cultivars of Pinto bean