tailieunhanh - Dissertation summary: Studying the agro-biological characteristics and some cultivation techniques for seedless lines and cultivars of Citrus fruit

Research objectives: It is to determine agrobiological features as a scientific basis for the study of the mechanism creating seedless fruits, and to intervene with technical measures in order to improve productivity and quality of fruits of citrus trees. It is to study applications of some technical measures to improve productivity and quality of fruits in some citrus tree cultivars. | MINISTRY OF EDUCATION AND TRAINING THAI NGUYEN UNIVERSITY HOANG THI THUY STUDYING THE AGRO-BIOLOGICAL CHARACTERISTICS AND SOME CULTIVATION TECHNIQUES FOR SEEDLESS LINES AND CULTIVARS OF CITRUS FRUIT SUMMARY OF PHILOSOPHY DOCTORAL DISSERTATION IN AGRICULTURE THAI NGUYEN - 2015 Research project completed College of Agriculture and Forestry THAI NgUyEN university Supervisor Asso. Prof. Ngo Xuan Binh Reviewer 1 . Reviewer 2 . Reviewer 3 . PhD Dissertation will be presented and depended in front of the Council of University Dissertation at the COLLEGE OF AGRICULTURE AND FORESTRY At am pm date month year 2015 PhD. Dissertation would be found in - National Library - Learning Resource Centre - TNU - Library in College of Agriculture and Forestry 1 INTRODUCTION 1. Rationale of the study The main fruit trees of Vietnam are orange mandarin lemon and pomelo trees that have a long history of development and have been planted throughout the ecoregions nationwide. In the past many decades citrus fruit remains one of the key export products and demand of domestic consumption is very large Hoang Ngoc Thuan 2004 . The study of development of citrus fruit trees in our country had been officially developed since the 30s of the previous century. Increasingly domestic and foreign authors are interested in research and development of orange trees and mandarin trees in Vietnam. Many new technical advances have been studied and applied in production. They are studies on growth and development diversity of genetic resources of orange and mandarin trees clonal rootstocks and multiplication techniques for orange mandarin lemon and pomelo trees that are free of diseases by multiplication in vitro and micrograft technical measures for an integrated intensification prevention and elimination of pests and diseases etc. However so far productivity of citrus fruits in our country generally is much lower than that of some countries in the region and around the world. In terms of quality there .

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