Crop simulation model has been becoming the core of agricultural production management and resource optimization management. Displaying crop growth process makes user observe the crop growth and development intuitionisticly. On the basis of understanding and grasping the occurrence condition, popularity season, key impact factors for main wheat diseases of stripe rust, leaf rust, stem rust, hea...

Farming systems frameworks such as the Agricultural Production Systems simulator (APSIM) represent fluxes through the soil, plant and atmosphere of the systemwell, but do not generally consider the biotic constraints that function within the system. We designed a method that allowed population models built in DYMEX to interact with APSIM. The simulator engine component of the DYMEX population-m...

We report here the release of four germplasm lines of hard red spring (HRS) wheat (T. aestivum L.) [Yecora Rojo Yr36– Gpc-B1 (Reg. no. GP-793, PI 638740), Yecora Rojo Lr47 (Reg. no. GP-791, PI 638738), Kern Lr47 (Reg. no. GP-792, PI 638739), and Anza Lr37/Yr17/Sr38 (Reg. no. GP-795, PI 638742)] and one durum wheat (T. turgidum L.) [UC1113 Yr36– Gpc-B1 (Reg. no. GP-794, PI 638741)], isogenic for...

Excellent preservation and new structural details can be demonstrated in rust-infected leaf tissue after high pressure freezing and freeze-fracturing. A tubular-vesicular complex was the most remarkable cytoplasmic structure obsetved in cells of tile bean rust fungus Uromyces appendiculatus var. appendiculatus during its establishment in its host Phaseolus vulgaris. In fungal ceUs undergoing in...

Rust fungi are obligate biotrophic pathogens that cause considerable damage on crop plants. Puccinia graminis f. sp. tritici, the causal agent of wheat stem rust, and Melampsora larici-populina, the poplar leaf rust pathogen, have strong deleterious impacts on wheat and poplar wood production, respectively. Filamentous pathogens such as rust fungi secrete molecules called disease effectors that...

Wheat leaf rust, caused by Puccinia triticina Eriks., is an important wheat (Triticum aestivum L.) foliar disease worldwide. Growing cultivars incorporating genetic resistance is one of the most effective approaches for disease control. Leaf rust resistance gene Lr42 was identified from a wheat relative, Aegilops tauschii Coss. (goatgrass), and has been transferred into hard winter wheat. A pre...

Interaction of the the rust fungus Puccinia miscanthi with the biofuel plant Miscanthus sinensis during the teliospore phase was investigated by light and electron microscopy. P. miscanthi telia were oval-shaped and present on both the adaxial and abaxial leaf surfaces. Teliospores were brown, one-septate (two-celled), and had pedicels attached to one end. Transmission electron microscopy revea...

Introduction Jujube (Ziziphus mauritiana Lam.) tree is subjected to attack by different fungal pathogens causing various diseases. In India, powdery mildew (Oidium sp.) causes defoliation and fruit-drop. Sooty mold (Cladosporium zizyphi) causes leaves to fall. Leaf spot results from infection by Cercospora spp. and Isariopsis indica var. zizyphi. Leaf rust, caused by Phakopsora zizyphi-vulgaris...

Abstract Leaf compounds may contribute to plant defense against Cronartium rusts. Secondary are either natural or induced in leaves. We studied the variation of leaves six alternate hosts pini and two C. ribicola that represented susceptible resistant species these Extracts from were analyzed using LC-MSMS (liquid chromatography tandem mass spectrometry) compared between same genera identify si...