Effect of salinity benzyladenine and their interaction on botanical characters and chemical constituents of Egyptian lupine plant (Lupinus tennis L.) [electronic resource].

Includes references.

Two Pots experiments were carried out at the Faculty of Agricultnre, Fayoum University. Agricultural Botany Department during the two successive seasons of 20041 2005 and 20051 2006. This wort< aimed to study the effect of irrigation with saline water, application of benzyladenine and their interactions on growth, yield, anatomical characters and some chemical constituents elf Egyptian lupine (Lupinus tennis Forssk) plant cv. Giza I. Two levels (2000 and 4000 ppm) of artificial saline water (Na Cl + CaC!, at the ratio elf I: I by weight), each without or with BA (I and 100 ppm) application were investig;tled.Conlrol p1anlS were irrigated with tap water and bolh BA levels were applied wtder nonnaI and "line conditions. Seeds ofEgyptian lupine were sown in perforated plastic pots filled w:th washed saod soil. The obtained results showed that. during the two studied seasons, saline water especially the high level (4000 ppm) marl<edIy decreased growth and yield characters i.e., plant height. leaf area, number of branches, fresh weight. <by weighl/plant, number elf pods, seeds yield /plant and weight of 100-seeds. Root tissues (section diameter, vascular cylinder diameter and average diameter elfseconday xylem vessel) and stem tissues (section diameter, number of cortical layers. average diameter of secondary xylem vessels and pith diameter) were also decreased in plants irrigated with saline water in comparison to those under none-saline conditions.Leaf blade tissues (midvein, blade, palisade and spongy tissues thickness, as well as vascular bundle dimensions) were decreased due to irrigation with saIine water irrigation.AII studied chemical constituents in leaves i.e., totaI N. P. K. chiorophylls (a, b). carotenoids and totaI caIbohydrate concentrations were significantly decreased wtder saIine conditions, while sodium concentration was significantly increased. Also, total N, total carbohydrates and crude protein % in seeds were decreased, while alkaloids conceutralion was fluctuated during the two studied seasons. Application ofBA wtder nonnaI conditions had stimulating effect on all growth, yield, anatomical characters and chemical constituents ofboth leaves and seeds mentioned before. Application elf BA under saIine conditions had beneficial effect especially at the high salinity level. where BA application at both levels counteracted the bannfuI effect caused by salinity for all studied parameters to a lesser extent Slight differences were showed between the low and high BA levels with respect to their effects wtder saline conditions Finally, it can be concluded that, Egyptian lupine plants grown wtder saline conditions were responded to BA application.

Summary in Arabic.

1