EFFECTS OF GROWTH-REGULATORS, TEMPERATURE, LIGHT, STORAGE AND OTHER FACTORS ON THE MUNTINGIA-CALABURA L SEED-GERMINATION

The GA(3) solution of 210 ppm was the concentration which resulted in the highest germination of M. calabura seeds and 6-BA did not affect t he germination. Either in absence or in presence of GA(3) the temperat ure which gave the highest germination was about 25 degrees C. No seed s germinated in darkness at 25 degrees C with and without GA(3) soluti on, an the contrary they were positively photoblastic at 25 degrees C. The loss of germination percentage occurred with and without GA-, sol ution and was close to 0% after 60 days storage of the seeds. A comple te inhibition of lettuce seed germination occurred with 50% extract of ripe (red) fruits and with 100% extract of mature (yellow) fruits.