نتایج جستجو برای: pear pollination

تعداد نتایج: 10801  

Journal: :Annals of botany 2007
Serena Mugnaini Massimo Nepi Massimo Guarnieri Beti Piotto Ettore Pacini

BACKGROUND AND AIMS The pollination drop is a liquid secretion produced by the ovule and exposed outside the micropyle. In many gymnosperms, pollen lands on the surface of the pollination drop, rehydrates and enters the ovule as the drop retracts. The objective of this work was to study the formation of the pollination drop in Juniperus communis, its carbohydrate composition and the response to...

Journal: :Phytopathology 2010
Wayne M Jurick Ivana Vico Verneta L Gaskins Wesley M Garrett Bruce D Whitaker Wojciech J Janisiewicz William S Conway

A polygalacturonase (PG) was extracted and purified from decayed tissue of 'Anjou' pear fruit inoculated with Penicillium expansum. Ammonium sulfate precipitation, gel filtration, and cation exchange chromatography were used to purify the enzyme. Both chromatographic methods revealed a single peak corresponding to PG activity. PG enzyme activity from healthy and wounded pear tissue was undetect...

2016
Shingo Terakami Shigeki Moriya Yoshihiko Adachi Miyuki Kunihisa Chikako Nishitani Toshihiro Saito Kazuyuki Abe Toshiya Yamamoto

Black spot disease, which is caused by the Japanese pear pathotype of the filamentous fungus Alternaria alternata (Fries) Keissler, is one of the most harmful diseases in Japanese pear cultivation. We mapped a gene for susceptibility to black spot disease in the Japanese pear (Pyrus pyrifolia Nakai) cultivar 'Kinchaku' (Aki gene) at the top of linkage group 11, similar to the positions of the s...

2017
Kobra Khalaj Nima Ahmadi Mohammad Kazem Souri Douglas D. Archbold

The aim of this study was to evaluate the effects of foliar application of boron and calcium on postharvest storage characteristics of Asian pear (Pyrus pyrifolia) fruit. This experiment was carried out in the experimental orchard of Asian pear at Tarbiat Modares University, Tehran, Iran. The treatments were two concentrations of boric acid (0% and 0.5%) and three concentrations of calcium chlo...

Journal: :Journal of agricultural and food chemistry 2003
Maria Leontowicz Shela Gorinstein Hanna Leontowicz Ryszard Krzeminski Antonin Lojek Elena Katrich Milan Cíz Olga Martin-Belloso Robert Soliva-Fortuny Ratiporn Haruenkit Simon Trakhtenberg

The aim of this study was to assess the bioactive compounds of apple and pear peel and pulp in vitro and their influence on plasma lipids and antioxidant potentials in vivo. The antioxidant potentials measured by 1,1-diphenyl-2-picrylhydrazyl (DPPH), beta-carotene bleaching (beta-carotene), and nitric oxide inhibition radical scavenging (NO) tests in apple peel and pulp were significantly highe...

2009
Katarzyna Kowalczyk

The objective of the research was to assess a grade of parthenocarpic fruit and fruitsetting following cross-pollination and self-pollination in pepino plants (Solanum muricatum Ait.). An experiment with six pepino clones of different origin was set up in glasshouse conditions. Experimental clones were subjected to the following treatments: self-pollination, cross-pollination, and emasculation ...

2015
Hao Yin Jianchang Du Jun Wu Shuwei Wei Yingxiu Xu Shutian Tao Juyou Wu Shaoling Zhang

Recent sequencing of the Oriental pear (P. bretschneideri Rehd.) genome and the availability of the draft genome sequence of Occidental pear (P. communis L.), has provided a good opportunity to characterize the abundance, distribution, timing, and evolution of long terminal repeat retrotransposons (LTR-RTs) in these two important fruit plants. Here, a total of 7247 LTR-RTs, which can be classif...

2014
David Chagné Ross N. Crowhurst Massimo Pindo Amali Thrimawithana Cecilia Deng Hilary Ireland Mark Fiers Helge Dzierzon Alessandro Cestaro Paolo Fontana Luca Bianco Ashley Lu Roy Storey Mareike Knäbel Munazza Saeed Sara Montanari Yoon Kyeong Kim Daniela Nicolini Simone Larger Erika Stefani Andrew C. Allan Judith Bowen Isaac Harvey Jason Johnston Mickael Malnoy Michela Troggio Laure Perchepied Greg Sawyer Claudia Wiedow Kyungho Won Roberto Viola Roger P. Hellens Lester Brewer Vincent G. M. Bus Robert J. Schaffer Susan E. Gardiner Riccardo Velasco

We present a draft assembly of the genome of European pear (Pyrus communis) 'Bartlett'. Our assembly was developed employing second generation sequencing technology (Roche 454), from single-end, 2 kb, and 7 kb insert paired-end reads using Newbler (version 2.7). It contains 142,083 scaffolds greater than 499 bases (maximum scaffold length of 1.2 Mb) and covers a total of 577.3 Mb, representing ...

2016
Wojciech J. FLORKOWSKI Grzegorz P. ŁYSIAK Wojciech J. Florkowski Grzegorz P. Łysiak

Podlaskie Voivodship is located in a climatic zone perceived as unfavourable for pear production. This study examines production, trade and consumption of pears in Poland and argues that Podlaskie Voivodship can exploit the existing demand for pears in the region given the physiological opportunities resulting from the phenomenon known as parthenocarpy. Parthenocarpy permits production of pears...

2017
Lin‐Lin Wang Chan Zhang Ming‐Liu Yang Guo‐Peng Zhang Zhi‐Qiang Zhang Yong‐Ping Yang Yuan‐Wen Duan

Pollination systems and associated floral traits generally differ between core and marginal populations of a species. However, such differences are rarely examined in plants with a mixed wind- and bumblebee-pollination system, and the role of wind pollination during range expansion in ambophilous plants remains unclear. We compared floral traits and the contributions of bumblebee and wind polli...

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