Wheat, a significant grain crop, is the second-largest crop in terms of acreage and output after rice. It farmed on around 217 million hectares worldwide, with nearly half it poor nations. Wheat member Poaceae family. Weed flora wheat includes Phalaris minor, Avena ludoviciana, Chenopodium album, Lathyrus aphaca, Vicia sativa, hirsute, Medicago hispida, Cichorium intybus, Asphodelus tenuifolius...

Herbicide Resistance, Photosystem II, psbA G ene, Photosynthesis, Chloroplast, Phalaris para­ doxa Triazine resistance in a mutant biotype of Phalaris paradoxa is accompanied by changes in the chlorophyll fluorescence induction curve, and by reduced quantum yield for electron transport, indicating altered photosystem II activity. H owever, light-saturated rates of electron transport in isolated...

II. PHALARIS ARUNDINACEA L. (REED CANARY GRASS) AS AN INVASIVE SPECIES ................................ 417 A. General Features of Reed Canary Grass in Its Native Range ............................................................................ 417 B. The Repeated Introductions of Reed Canary Grass and Its Subsequent Invasion in North America ...................... 417 C. Ecological Impacts of...

       Seed dormancy has an important role in resistance and survival mechanisms of plants. Finding of some information about the range of primary dormancy and effective factors in dormancy breaking and optimal conditions of seed germination are necessary for weed control and other research purposes.  In this research, the seeds of 10 species of grass weeds in Tehran province fields (Echinocloa...

In this study, we aimed to identify the macrophyte pattern and diversity under exposure substantial hydromorphological degradation in rivers, taking into account water quality factor. The study was based on 190 small medium lowland rivers Poland that had experienced channel alterations. number of taxa identified (153 species) consistent with natural/seminatural average species richness for surv...