Abstract Key message Pollination is a key step for fruit production. To provide tool future in-depth analysis of pollination in chestnut, we describe detail chestnut orchard (location, genotype, phenotype and seed-set all trees). Context Chestnuts, which are insect-pollinated trees, have been massively planted around the world nut Orchards with clonal varieties selected from crosses between Eur...

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Male florets and pistillate flowers of cvs.Chandler and Hartley of Persian walnut were cultured on modified Murashige and Skoog medium (MS) supplemented with 0.05 mg l-1 biotin, 0.5 mg l-1 folic acid, 100 mg l-1 glutamine and different concentrations of Naphthalene acetic acid (NAA) and Kinetin (KIN) and for pistillate flowers culture, these concentrations were 0.25, 0.5, 1 and 2 mg l-1). After...

use in the oxidation-reductions systems associated with increased cell metabolism. Owing to this growth, the concentration levels fall sufficiently to allow translocation of this substance from other parts of the plant to these rapidly growing centres, so that the amount actually present increases. This increase obliterates the losses that should be detected were the glucoside utilized in the f...

The ethanolic extract of leaves of Acalypha hispida was evaluated for phytochemical, cytotoxic and antibacterial activities. Phytochemical studies revealed the presence of flavonoids, saponins, glycosides, reducing sugars and steroids. Cytotoxic activity was investigated by brine shrimp (Artemia salina) lethality assay. The extract showed potent cytotoxic effect (LC50 19.95μg/ml) which is compa...

Riparian ecosystems play numerous and essential roles related to the quality and flow of water, and foodlhabitat for fish, and varieties of wildlife. Due to lateral and linear linkages throughout the landscape, these zones influence the integrity of the terrestrial as well as the entire aquatic-riverine ecosystem. Since Euro-American settlement in the West, the structure and condition of many r...

Occurrence of Anthocoris tomentosus Péricart, A. antevolens White, A. whitei Reuter, and Deraeocoris brevis (Uhler) in non-orchard habitats is described for areas adjacent to the pear growing regions of Yakima, WA. The four species were found on a number of tree and shrub species, especiallywillow, cottonwood, oak, alder, aspen, poplar, andbitterbrush. The four predators differed in degree of s...

We investigated the basis for fruit drop in walnut (Juglans regia L.) following bloom period applications of streptomycin as a potential control treatment for walnut blight, a bacterial disease incited by Xanthomonas campestris pv. juglandis (Pierce) Dye. Experiments were conducted on streptomycin-treated field plots of ‘Vina’ walnut. Four streptomycin treatments were applied at different times...

The broad objectives' of this project have included aspects of N deficiency including reassessment of the so-called N critical value, determination of tree N content and the amount of annual N uptake, assessment of the periodicity of N transport to leaves and fruit, and the efficiency of fertilizer N recovery using 15N-depleted(NH.hS04' The onset of yield reduction in N-deficient "Serr" and "Ha...

This commentary makes three points. First, the environment is a key determinant of developmental phenotype, with a wide variety of mechanisms that mediate this influence. Second, there is an intimate relationship between the biology of development and the biology of cancer, with many of the same signaling pathways, geneexpression profiles, endocrine and paracrine influences, and DNA modificatio...