الفهرس 
العنوانOnly 14 pages are availabe for public view
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Abstract
This study was carried out during the tow successive seasons of 1992 and 1993 at the experiment station of the Strawberry and Non Traditional Crops center at South Tahreer Behera Governorate and Fac. of Agriculture Ain Shams University The investigation was aimed to study the different between UC157 F1 asparagus plants and UC157 F2 with respect to vegetative growth , some chemical component , sex ratio and early and total yield . A complete randomized block design was with ten replicates was adopted .UC157 F1 seeds significant performed better than the F2 seeds under stress conditions i.e. low temperature and heigh salinity . Significant increments in stalks number , plant height , length of stem to the first shoot , number of roots , crown , buds per plant fresh and dry weight were recorded in F1 plants while reducing sugars , lipids and fiber increased significantly in F2 plants than F1 plants . The total chlorophyll and total carbohydrates contents in the roots and crowns , increased significantly in UC 157 F1 as compared with UC 157 F2 plants . Data also showed that UC 157
F1 plants gave more male planets than UC 157 F2 which had more female plants . Great variation in early and total yield per plant was higher in F1 than F2 plants . from the economical studies , the use of F1 seeds is recommended as their production was significantly higher than F2 plants .
Total and early yield were significantly higher in F1 than F2 plants due to the increment of number of spears , spear weight and the diameter of the produced spears per plant .