Zhumeria majdae is a medicinal plant and endemic of Iran that is being threatened to extinction. The present investigation to preserve this relict species, was conducted to study of: 1) different treatments effect on ...Zhumeria majdae is a medicinal plant and endemic of Iran that is being threatened to extinction. The present investigation to preserve this relict species, was conducted to study of: 1) different treatments effect on seeds germination: a) in vivo, b) in vitro were subjected to 5 treatments, 2) callus induction and organogenesis from leaf, root and stem of explants by tissue culture on MS medium supplemented with 7 different concentration and combinations of auxin and cytokinin. Results indicated the germination rate were promoted by seeds mucilage, and were inhibited under cold condition. The best callus induction were observed from stem and leaf explants in the MS + B(IAA(0.1) + Kin(1) mg·L-10). The maximum leaf formation of leaf explants were produced in the MS + E(IAA(0.1) + BA(2) mg·L-10).展开更多
In the present research, we have investigated morphologicaltraits of different organs of Arabidopsis species in Iran. Trichomes on the aerial parts of three species were studied under anatomical microscopy. The specie...In the present research, we have investigated morphologicaltraits of different organs of Arabidopsis species in Iran. Trichomes on the aerial parts of three species were studied under anatomical microscopy. The species exist in Iran include: Arabidopsis thaliana (Heynh), Arabidopsis pumila (steph) and Arabidopsis wallichii (Hook & thomas). The form of trichomes, basal and stemleaves, fruit length, the attitude of fruit, the existence of trichomes on the fruit, and the color ofpetal are morphological traits which separate the species. Anatomical traits of the leaf and stem of studied species were analyzed using an optical microscope. In the stem, some traits such as the shape of stem in transverse incision, the thickness of skin, the existence of supporting tissue around phloem, the number of xylem and phloem and the wavy form of stele were distinct in the three species. In the leaf, some traits such as the shape of leaf, the number of palisade parenchyma layers, the uniformity of mesophyll tissue, and the density of trichomes were different in the three species. No significant difference has been observed in the study of reproductive meristem, except in A. wallichii. The only difference was related to the size of reproductive meristem of two species and the number of flowers produced from the meristems.展开更多
文摘Zhumeria majdae is a medicinal plant and endemic of Iran that is being threatened to extinction. The present investigation to preserve this relict species, was conducted to study of: 1) different treatments effect on seeds germination: a) in vivo, b) in vitro were subjected to 5 treatments, 2) callus induction and organogenesis from leaf, root and stem of explants by tissue culture on MS medium supplemented with 7 different concentration and combinations of auxin and cytokinin. Results indicated the germination rate were promoted by seeds mucilage, and were inhibited under cold condition. The best callus induction were observed from stem and leaf explants in the MS + B(IAA(0.1) + Kin(1) mg·L-10). The maximum leaf formation of leaf explants were produced in the MS + E(IAA(0.1) + BA(2) mg·L-10).
文摘In the present research, we have investigated morphologicaltraits of different organs of Arabidopsis species in Iran. Trichomes on the aerial parts of three species were studied under anatomical microscopy. The species exist in Iran include: Arabidopsis thaliana (Heynh), Arabidopsis pumila (steph) and Arabidopsis wallichii (Hook & thomas). The form of trichomes, basal and stemleaves, fruit length, the attitude of fruit, the existence of trichomes on the fruit, and the color ofpetal are morphological traits which separate the species. Anatomical traits of the leaf and stem of studied species were analyzed using an optical microscope. In the stem, some traits such as the shape of stem in transverse incision, the thickness of skin, the existence of supporting tissue around phloem, the number of xylem and phloem and the wavy form of stele were distinct in the three species. In the leaf, some traits such as the shape of leaf, the number of palisade parenchyma layers, the uniformity of mesophyll tissue, and the density of trichomes were different in the three species. No significant difference has been observed in the study of reproductive meristem, except in A. wallichii. The only difference was related to the size of reproductive meristem of two species and the number of flowers produced from the meristems.
