Two-hundred rice farming households from eight lowland villages in North-West Cambodia were surveyed 2020 to determine changes farmers’ knowledge, weed management practices and seed contamination kept for sowing. The major yield constraints cited by farmers lack of water, inability manage water competition weeds. Water shortages result reduced crop establishment, non-optimal herbicide applicati...

Weeds are major biotic constraints to rice production worldwide. Compared other sub-regions, weed communities of not well described for East Africa and there is limited information on environmental factors affecting the distribution species. This study aimed address these knowledge gaps. Seasonally flooded fields 31 sites in Rwanda, Tanzania, Kenya Uganda, across three altitude classes (Low: <2...

La siembra de gramíneas en temporal árido se basa, principalmente, propágulos con baja calidad densidad específica y pureza física, resultando bajo éxito. Se evaluaron, condiciones laboratorio, atributos físicos fisiológicos Bouteloua curtipendula, Leptochloa dubia, Digitaria californica, Setaria macrostachya Pennisetum ciliare (exótico naturalizado) como testigo. determinaron tamaño forma cari...

drought and salinity are the most important limiting factors of plant growth and development in many regions of the world. in this regard, using of species that are able to have higher production in this condition is a suitable strategy. in order to study the effect of drought and salinity stresses on morphophysiological properties of kallar grass (leptochloa fusca l. kunth), a factorial experi...

We conducted a molecular phylogenetic study of the subfamily Chloridoideae using six plastid DNA sequences (ndhA intron, ndhF, rps16-trnK, rps16 intron, rps3, and rpl32-trnL) and a single nuclear ITS DNA sequence. Our large original data set includes 246 species (17.3%) representing 95 genera (66%) of the grasses currently placed in the Chloridoideae. The maximum likelihood and Bayesian analysi...

sodium/proton exchangers (nhx) are key players in plant responses to salinity and have a central role in establishing ion homeostasis. nhxs can be localized in tonoplast or plasma membranes, where they exchange sodium ions for protons, resulting in the removal of ions from the cytosol into vacuole or extracellular spaces. in the present study, the expression pattern of the gene encoding na+/h+ ...

vacuolar h+-translocation pyrophosphatase (v-ppase) and na+/h+ antiporter (v-na+/h+) are important transporters in plant cells and have essential roles against abiotic stresses. in this study, the effects of salt stress were surveyed on the transcription of v-ppase pump and na+/h+ antiporter genes at early times of nacl treatment in roots of halophytic grass leptochloa fusca through the real ti...