SOME PHYSIOLOGICAL STUDIES ON FLAX PLANT

Abstract

Pot experiment was carried out in the wirehouse of the Central Laboratory for Food and Feed, Agriculture Research Center, Giza, Egypt to study the tolerance of flax plant to different levels of salinity (0, 2000, 4000 and 6000 ppm) as 2 NaCI :2 CaC12 : I MgS04 on the growth., yield and chemical composition of flax plants as well as studied the effect of phosphorein (biofertilizer, with full and half dose of P205), cotngein (15 glkg seeds) and foliafeed C 0.7 gil (micronutrients fertilizer compounds) as well as GAJ at the rate of 100 ppm on reducing the hazard effects of salinity. Increasing salinity levels lead to decreases on most of the studied growth and yield characters, chlorophylls, total amino acids and unsaturated futty acids as well as N, P and K under the same conditions. While sugars, some amino acids, phenols and saturated futty acids as well as Ca, Mg and Na were increased by increasing salinity level. On the other hand, the application of phosphorein with full dose of P205 surpassed phosphorein with half dose of P20s on growth, yield and chemical composition under saline or non

saline soil

conditions. Cotngein seed coated surpassed foliafccd C foliar

application on the most of the growth, yield characters and chemical composition under saline or non saline soil. Also, application of GA 3 may correct to extent the negative effect of salinity on the growth, yield or chemical composition. In addition, field experiment was carried out at Giza Experimental Station,

A.R.C. and

Tag EI-Ezz Research Station, Dakahlia to study the effect of

phosphorein, cotngein, foliafccd C and GA3 on yield and productivity as well as vitamin E of flax plant grown under clay loam and moderately saline soil. Clay loam soil surpassed moderately saline soil in flax yield (seed, straw and fiber) and its components. There was significant increase in seed, straw, fiber yield and its components of flax plants by using phosphorein, cotngein, foliafeed and GA3 under the two different types of soils when compared with control-untreated plants. On the other hand, vitamin E (a-tocopherol) concentration of linseed oil increased in the plant grown under moderately saline soil when compared with

those grown

under clay loam soil. a-Tocopherol concentration in linseed oil

decreased significantly by flax seeds treated with phosphorein, cotngein, foliafccd C or GAJ application when compared with control-untreated plants. Using GAJ

treatment

resulted in the highest concentration of vitamin E, while cotngein

application

recorded the highest seed, straw, fiber and oil yield for flax plants

under clay loam and moderately saline soil conditions.