Effect of NaCl salinity Effect of NaCl salinity on germination, on germination,

growth,gas exchanche growth,gas exchanche and yield of greenhouse and yield of greenhouse

eggplanteggplant

Eggplant : Eggplant : solanaceaesolanaceaeSolanum melongena var. Solanum melongena var.

DelicaDelica

The completely randomized The completely randomized block designblock design

6 treatments6 treatments

Zero (cintrol)Zero (cintrol)10mmol10mmol25 25 50 50 100 100 150 150 16 plant for per treatment16 plant for per treatment

External NaCl salinity up to 50 External NaCl salinity up to 50 mmol delayed germination but did mmol delayed germination but did not reduce the final percentage: at not reduce the final percentage: at 100 mmol and 150mmol the seed 100 mmol and 150mmol the seed germination wasgermination was reduced reduced significantlysignificantly..

Effect of salinity on Effect of salinity on germinationgermination

No diffrences were found in radicle elongation up to No diffrences were found in radicle elongation up to 50mmol NaCl. Only at 100mmol and 150 mmol 50mmol NaCl. Only at 100mmol and 150 mmol NaCl was radicle elongation severely affected by NaCl was radicle elongation severely affected by salinity when at day 7 after starting the test, 36% salinity when at day 7 after starting the test, 36% and 74% reductions in length respectively, were and 74% reductions in length respectively, were

observed compared with the other salinity levelsobserved compared with the other salinity levels . .

Effect of salinity on radicle length of Effect of salinity on radicle length of eggplant seedseggplant seeds

Effect of salinity on the Effect of salinity on the emergence of germinated seeds emergence of germinated seeds

and growth of seedlingsand growth of seedlings

Seedling emergence was reduced significantly at Seedling emergence was reduced significantly at 100 mmol and 150 mmol NaCl, where 85% and 100 mmol and 150 mmol NaCl, where 85% and 75% of the germinated seeds had emerged, 75% of the germinated seeds had emerged, respectivly, after 14 days.respectivly, after 14 days.

The seedling height as well as the leaf area The seedling height as well as the leaf area and dry weight were significantly higher at 0 and dry weight were significantly higher at 0 and 10 mmol NaCl, decreased as the external and 10 mmol NaCl, decreased as the external salinity increasedsalinity increased..

Wegetative growth, i.e. shoot length and dry Wegetative growth, i.e. shoot length and dry weight, 6 weeks after salt imposition, were weight, 6 weeks after salt imposition, were significantly reduced at salinities higher than significantly reduced at salinities higher than 10 mmol10 mmol..

Effect of salinity on shoot length(SL) Effect of salinity on shoot length(SL) and shoot dry weight(SDW)and shoot dry weight(SDW)

Leaf size was the most sensitive Leaf size was the most sensitive parameter to NaCl salinity while parameter to NaCl salinity while leaf number was not affected.leaf number was not affected.

Effect of salinity on total leaf Effect of salinity on total leaf areaarea

Leaf tissue concentrations of Cl‾ and Leaf tissue concentrations of Cl‾ and Na+ increased significantly with Na+ increased significantly with increasing external NaCl salinity in the increasing external NaCl salinity in the rooting medium while K+ showed a rooting medium while K+ showed a trend to decreasetrend to decrease..

Effect of salinity on the Effect of salinity on the concentration of various ions concentration of various ions

within the leaveswithin the leaves

There was significantl difference in There was significantl difference in Pn rate between leaves 20 and 28 Pn rate between leaves 20 and 28 on a unit area basison a unit area basis..

Effect of salinity on Effect of salinity on photosynthetic ratephotosynthetic rate

Effect of salinity on Effect of salinity on yieldyield

yield decreased significantly with yield decreased significantly with increasing salinity over 10 mmol NaCl.increasing salinity over 10 mmol NaCl.

The average fruit weight was reduced The average fruit weight was reduced significantly at 50mmol NaCl, while the significantly at 50mmol NaCl, while the totol number of fruit harvested at 25mmol.totol number of fruit harvested at 25mmol.

The lower yield at25mmol NaCl was due The lower yield at25mmol NaCl was due to a decrease in number of fruits per plant to a decrease in number of fruits per plant only, whereas at 50mmol,100mmol and only, whereas at 50mmol,100mmol and 150mmol both the number and size of the 150mmol both the number and size of the fruit were reduced.fruit were reduced.