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Objective Genetics Biotechnology Biochemistry And Forestry

Author: Vijay K. Khanna
Publisher: I. K. International Pvt Ltd
ISBN: 8189866885
Size: 79.21 MB
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The present book has been designed to serve the students of Plant Breeding, Genetics, Biotechnology, Biochemistry and Forestry. In most of the books, the objective type questions judge the students on the basis of their ability to memorize, because of the way they are formulated. It is important to be able to remember the year of historical events, the scientists involved and who named what to make one remember the landmark contributions of the people on a particular subject. Along with these kinds of questions, majority of the questions in this book have been designed to assess the candidate's understanding of the subject. It is perhaps for the first time where questions have four to six choice statements, which are to be understood to find the right answer. One has to think and remember what he has learnt to be able to answer these questions. There are some books on objective type questions on the subject of Plant Breeding and a very few on Genetics but there is hardly any book, which deals with Tissue Culture, Biotechnology, Biochemistry or Forestry. All these subjects are related as many postgraduate students of Genetics and Plant Breeding take Biotechnology as a minor subject whereas those of Biotechnology take Biochemistry or Genetics and Plant Breeding as a minor subject. Also, undergraduates in agricultural universities study courses on all these subjects including Forestry

Population Genetics Of Forest Trees

Author: W.T. Adams
Publisher: Springer Science & Business Media
ISBN: 9401128154
Size: 21.59 MB
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Tropical climates, which occur between 23°30'N and S latitude (Jacob 1988), encompass a wide variety of plant communities (Hartshorn 1983, 1988), many of which are diverse in their woody floras. Within this geographic region, temperature and the amount and seasonality of rainfall define habitat types (UNESCO 1978). The F AO has estimated that there 1 are about 19 million km of potentially forested area in the global tropics, of which 58% were estimated to still be in closed forest in the mid-1970s (Sommers 1976; UNESCO 1978). Of this potentially forested region, 42% is categorized as dry forest lifezone, 33% is tropical moist forest, and 25% is wet or rain forest (Lugo 1988). The species diversity of these tropical habitats is very high. Raven (1976, in Mooney 1988) estimated that 65% of the 250,000 or more plant species of the earth are found in tropical regions. Of this floristic assemblage, a large fraction are woody species. In the well-collected tropical moist forest of Barro Colorado Island, Panama, 39. 7% (481 of 1212 species) of the native phanerogams are woody, arborescent species (Croat 1978). Another 21. 9% are woody vines and lianas. Southeast Asian Dipterocarp forests may contain 120-200 species of trees per hectare (Whitmore 1984), and recent surveys in upper Amazonia re corded from 89 to 283 woody species ~ 10 cm dbh per hectare (Gentry 1988). Tropical communities thus represent a global woody flora of significant scope.

Genetic Effects Of Air Pollutants In Forest Tree Populations

Author: Florian Scholz
Publisher: Springer Science & Business Media
ISBN: 3642745482
Size: 25.64 MB
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Air pollutants provide environmental conditions that drastically differ in many respects from those to which forest trees are naturally adapted. Leading experts in the field here consider these questions of immediate relevance arising from the changing environment: (1) Do air pollutants introduce effects of selection that differ from those known for populations that are not subject to such stress conditions? (2) If air pollutants introduce quantitatively or even qualitatively novel selective effects, which consequences might arise from the adaptation of forest tree populations to the present conditions as well as for the preservation of adaptability to future conditions? In addition to these questions, concepts for preservation of genetic resources are discussed.

Micropropagation Of Woody Plants

Author: M.R. Ahuja
Publisher: Springer Science & Business Media
ISBN: 9780792318071
Size: 76.24 MB
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This volume covers recent advances in the vegetative propagation of woody plants by tissue culture. A wide range of topics relevant to micropropagation of woody plants are discussed by renowned international scientists. These include cellular contro of morphogenesis, light regimes in tissue culture, maturation and rejuvenation, synthetic seed, genetics of micropropagated plants, haploid embryogenesis, protoplast culture, and acclimatization of ex vitro woody plants. In addition to micropropagation of selected woody plants, both gymnosperms and angiosperms, this volume also includes in vitro genetic selection, strategic planning for application of biotechnology for genetics and breeding, and clonal options for woody plant improvement. A balanced view of both perspectives and limitations of woody plant micropropagation is presented.

Indiras Objective Agricultural Biotechnology 2nd Ed Mcq For Competitive Examinations For Ias Ifs Ars Pcs Banking Sets Ugc Net And Others

Author: R.L. Arya
Publisher: Scientific Publishers - Competition Tutor
ISBN: 9386347636
Size: 11.90 MB
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“Indira’s Objective Agricultural Biotechnology” for competitive exams in agricultural biotechnology discipline contains 23 chapters covering all related disciplines. Model test papers and previous years solved papers have been given due importance at the end of the book present a general guidance of examination pattern. Each chapters contains multiple choice questions covering every aspects and total about 12000 objective questions with multiple choices have been framed and arranged sequentially. This book is primarily intended to serve as a ready reference for those appearing in competitive examinations of undergraduate, post graduate, M. Phil and doctorate programmes in Biotechnology of various Universities. The chapters are chosen in view to cover the course contents of competitive examinations like IAS, IFS, ARS, PCS, Banking, SLETs, UGC-NET and others.

Clonal Forestry Genetics And Biotechnology

Author: M. R. Ahuja
Publisher: Springer
ISBN: 9783540525011
Size: 27.14 MB
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Clonal forestry has come of age. Basic techniques in genetics and biotechnology of other organisms are generally applicable to forest trees. However, there are some differences, in particular in the juvenile- and maturation-related regeneration. Examined here are crucial topics of juvenility, maturation and rejuvenation in clonal propagation of trees. In addition, the genetics of clones, population biology of clonal deployment, propagation and field testing of clones, clone identification, clonal physiology, regeneration and variation in plant tissue cultures, the role of somatic embryogenesis in clonal forestry, and recent developments in biotechnology, including the molecular structure of trees and gene transfer are covered in depth.