tailieunhanh - Summary of doctoral thesis: Study on growth characteristics, wood properties and sterility of triploid acacias providing scientific bases for breeding and afforestation

Objectives of the study: Determining the growth characteristics and adaptability of some triploid acacia clones in 3 ecological regions (Northeast, North Central and Southeast); đetermine the basic wood properties for some promising triploid acacia clones; identify some reproductive characteristics of some triploid acacia clones | MINISTRY OF EDUCATION MINISTRY OF AGRICULTURE AND TRAINING AND RURAL DEVELOPMENT VIETNAMESE ACADEMY OF FOREST SCIENCES - - PHAM VAN BON STUDY ON GROWTH CHARACTERISTICS WOOD PROPERTIES AND STERILITY OF TRIPLOID ACACIAS PROVIDING SCIENTIFIC BASES FOR BREEDING AND AFFORESTATION Speciality Forest tree genetics and breeding Code 9 62 02 07 SUMMARY OF DOCTORAL THESIS Ha Noi 2021 Hanoi - 2020 This work has been completed at the Vietnamese Academy of Forest Sciences Supervisors 1. Dr. Ha Huy Thinh 2. Dr. Nghiem Quynh Chi TS. Phí Hồng Hải Chairman Assoc. Prof. Dr. Phi Hong Hai Reviewer 1 Assoc. Prof. Dr. Pham Duc Tuan Reviewer 2 Assoc. Prof. Dr. Nguyen Van Viet Reviewer 3 Dr. Doan Ngoc Dao The thesis was defended in front of the institute s thesis-judging council meeting at the Vietnamese Academy of Forest Sciences at the hour minute day month year 2021 The thesis can be referred at the National Library of Vietnam and the Vietnamese Academy of Forest Sciences PUBLISHED SCIENTIFIC PAPERS RELATED TO THE THESIS 1. P. V. Bon C. E. Harwood Q. C. Nghiem H. H. Thinh D. H. Son and N. V. Chinh 2020 Growth of triploid and diploid Acacia clones in three contrasting environments in Viet Nam Australian Forestry 83 4 265-274. https . 2. Bon PV Harwood CE Chi NQ Thinh HH and Kien ND 2020 Comparing wood density heartwood proportion and bark thickness of diploid and triploid acacia hybrid clones in vietnam Journal of Tropical Forest Science 32 2 pp. 206-216. https . INTRODUCTION 1. Rationale Developing mono species plantation with large scale acacia plantation in Vietnam have been meeting high risk of disease especially wilt disease caused by Ceratocytis sp and pink disease caused by Corticium samonicolor leading to seriously reducing wood productivity of plantation. Another thing has been receiving attention from experts some acacia species may become invading grasses competing with indigenous species requiring further work