some crops have been observed to posses effects of allelopathic type. it would be interesting and useful as well to study these plants' allelopathic effects on other crop plants, particularly in rotation and intercropping. so, in this study, the allelopathic potential of cucumber organs' extract on seedling growth of cucumber, eggplant, pepper, and tomato was evaluated using a randomi...

Schistosomiasis is a Neglected Tropical Diseases which can be prevented with mass deworming chemotherapy. The reliance on a single drug, praziquantel, is a motivation for the search of novel antischistosomal compounds. This study investigated the anthelmintic activity of the stem bark and roots of Rauwolfia vomitoria against two life stages of Schistosoma mansoni. Both plant parts were found to...

In the Arabidopsis shoot apical meristem, an organizing center signals in a non-cell-autonomous manner to specify the overlying stem cells. Stem cells express the small, secreted protein CLAVATA3 (CLV3; ) that activates the CLV1-CLV2 receptor complex, which negatively controls the size of the organizing center. Consistently, CLV3 overexpression restricts shoot meristem size. The root meristem a...

reactions of 20 cucumber cultivars, tested to fusarium stem and root rot disease, have ranged from susceptible to tolerant. the most susceptible cultivars were 8-ayat, 32-pv, cb- 61688222, janette, nasco, negeen, nicoo 100, psr36-47112, rubah-l, rubah-s and sultan and tolerant cultivars were 120118, ayat, jakie, fd-c101, festival, khassib, psr 36-45007, sr36-45664 and storm. between these culti...

in order to investigate the effect of pruning and potassium nutrition on pumpkin grain yield and quality, a factorial experiment based on complete block design with four replications was carried out in nooshar village of ardabil province, ardabil, iran, in 2007. experimental factors include potassium nutrition in three level (0, 75 and 150 kg/ha from potassium sulfate) and stem pruning (without...

This paper shows that synchrotron-based fluorescence and absorption-edge computed microtomographies (CMT) are well-suited for determining the compartmentalization and concentration of metals in hyperaccumulating plant tissues. Fluorescence CMT of intact leaf, stem, and root samples revealed that Ni concentrated in stem and leaf dermal tissues and, together with Mn, in distinct regions associate...

Plants that belong to the Combretaceae family have long history of use in the traditional medicine systems of Africa and Asia for treatment of diseases and conditions associated with HIV/AIDS-opportunistic infections. The objective of this study was to investigate the biological activities of extracts of Terminalia stenostachya Engl. & Diels and Terminalia spinosa Engl. (Combretaceae), to verif...