This book provides an up-to-date review and analysis of the carrot's nuclear and organellar genome structure and evolution. In addition, it highlights applications of carrot genomic information to elucidate the carrot's natural and agricultural history, reproductive biology, and the genetic basis of traits important in agriculture and human health. The carrot genome was sequenced in 2016, and its relatively small diploid genome, combined with the fact that it is the most complete root crop genome released to date and the first-ever Euasterid II genome to be sequenced, mean the carrot has an important role in the study of plant development and evolution. In addition, the carrot is among the top ten vegetables grown worldwide, and the abundant orange provitamin A carotenoids that account for its familiar orange color make it the richest crop source of vitamin A in the US diet, and in much of the world. This book includes the latest genetic maps, genetic tools and resources, and covers advances in genetic engineering that are relevant for plant breeders and biologists alike.

Over the last decade, the field of plant ecology has significantly developed and expanded, especially in research concerning the herb layer and ground vegetation of forests. This revised second edition of The Herbaceous Layer in Forests of Eastern North America accounts for that growth, presenting research that approaches the ecology of the herb layer of forests from a variety of disciplines and perspectives. The book synthesizes the research of top ecologists and biologists on herbaceous layer structure, composition, and dynamics of a variety of forest ecosystem types in eastern North America. The 2003 first edition of The Herbaceous Layer in Forests of Eastern North America was praised for containing the most extensive listing of herb-layer literature in existence. This second edition brings this material up to date, revised to include current research and data. The book incorporates quantitative data to support analyses that was previously unavailable during the publication of the first edition. Also featured are six entirely new chapters, focused on the response of the herbaceous layer to a wide variety of natural and anthropogenic disturbances. Building on the over 1,200 references and sources of the first edition, the second edition of The Herbaceous Layer in Forests of Eastern North America is an invaluable resource for plant ecologists, forest ecologists, and conservationists.

Ecology of the Shortgrass Steppe: A Long-Term Perspective summarizes and synthesizes more than 60 years of research that has been conducted throughout the shortgrass region. The shortgrass steppe was an important focus of the International Biological Programme's Grassland Biome project that ran from the late 1960s until the mid 1970s. The work conducted by the Grassland Biome project was preceded by almost 40 years of research by U.S. Department of Agriculture researchers - primarily from the Agricultural Research Service - and followed to the present by the Shortgrass Steppe Long Term Ecological Research project. Ecology of the Shortgrass Steppe is an enormously rich source of data and insight into the structure and function of a semiarid grassland.

’n Regstreekse, voor die hand liggende en effektiewe gids tot boom-identifikasie.

Dié boek se titel sê dit alles! Hierdie bygewerkte tweede uitgawe verskaf ’n duidelike uiteensetting van hoe bome saamgestel is en waarna om op te let wanneer ’n boom geïdentifiseer word. Die boek bestaan uit twee dele:

- Deel 1 beskryf en illustreer duidelik die verskillende dele van ’n boom en hul rol in boomidentifikasie.

- Deel 2 bevat ’n sleutel tot 43 boomgroepe, gebaseer op maklik waarneembare stingel- en blaarkenmerke. Dit gee ’n duidelike oorsig van elke groep, sowel as die Suider-Afrikaanse boomfamilies wat in die onderskeie groepe verteenwoordig word. Talle kleurfoto’s en verduidelikende illustrasies ondersteun die teks wat dié handleiding toeganklik en gebruikersvriendelik maak.

Identifiseer die Bome van Suider-Afrika sal lesers toerus met ’n goeie begrip van die bou van bome en waarna hulle moet oplet om dit korrek te kan identifiseer.

Also available in English as How to Identify Trees in Southern Africa .

The sheath nematodes belonging to the superfamily Hemicycliophoroidea are unique amongst all plant parasitic nematodes known to man due to the presence of an extra cuticular covering or sheath over the inner cuticle and body of all juvenile and adult life stages. These plant-parasitic nematodes include species of agricultural and quarantine importance. In Systematics of the Sheath Nematodes of the Superfamily Hemicycliophoroidea John Chitambar and Sergei Subbotin provide a detailed review of the taxonomy and diagnosis of the superfamily, its member genera and 153 related species based on their morphological and molecular analyses, as well as a further understanding of the relationships within the superfamily using molecular phylogenetics. In addition, Chitambar and Subbotin also give detailed information on the global distribution, biology, host-parasite relationships and ecology of sheath nematodes.

Cadmium Toxicity and Tolerance in Plants: Agronomic, Genetic, Molecular and Omic Approaches presents research and latest developments on mechanisms of cadmium tolerance covering both lab and field conditions. This book contains important insights and options for minimizing Cd accumulation in plants and mitigating Cd toxicity. Topics covered include using various omics approaches to understanding plant responses to Cd, novel technologies for developing Cd tolerance and integrated breeding approaches to mitigate Cd stress in crops. Cadmium Toxicity and Tolerance in Plants: Agronomic, Genetic, Molecular and Omic Approaches is a valuable resource for both researchers and students working on cadmium pollution and plant responses as well as related fields of environmental contamination and toxicology.

This book highlights modern methods and strategies to improve cereal crops in the era of climate change, presenting the latest advances in plant molecular mapping and genome sequencing. Spectacular achievements in the fields of molecular breeding, transgenics and genomics in the last three decades have facilitated revolutionary changes in cereal- crop-improvement strategies and techniques. Since the genome sequencing of rice in 2002, the genomes of over eight cereal crops have been sequenced and more are to follow. This has made it possible to decipher the exact nucleotide sequence and chromosomal positions of agroeconomic genes. Most importantly, comparative genomics and genotyping-by-sequencing have opened up new vistas for exploring available biodiversity, particularly of wild crop relatives, for identifying useful donor genes.

Global change threatens ecosystems worldwide, and tropical systems with their high diversity and rapid development are of special concern. We can mitigate the impacts of change if we understand how tropical ecosystems respond to disturbance. For tropical forests and streams in Puerto Rico this book describes the impacts of, and recovery from, hurricanes, landslides, floods, droughts, and human disturbances in the Luquillo Mountains of Puerto Rico. These ecosystems recover quickly after natural disturbances, having been shaped over thousands of years by such events. Human disturbance, however, has longer-lasting impacts. Chapters are by authors with many years of experience in Puerto Rico and other tropical areas and cover the history of research in these mountains, a framework for understanding disturbance and response, the environmental setting, the disturbance regime, response to disturbance, biotic mechanisms of response, management implications, and future directions. The text provides a strong perspective on tropical ecosystem dynamics over multiple scales of time and space.

Plant endophytes are a potential source for the production of bioactive compounds that can fight against devastating diseases in both plants and humans. Among these endophytic microorganisms, endophytic fungi are one of the dominant group of microorganisms with a potential role in plant growth promotion and the discovery of noble bioactive natural products. Endophytic fungi possess several bioactivities like anticancer, antimicrobial, insecticidal, plant growth stimulants, crop protection, phytoremediation, etc. Presence of modular biosynthetic genes clusters like PKS and NRPS in several endophytic fungi underscores the need to understand and explore such organisms. This volume presents and demonstrates the applied aspects of endophytic fungi. Practical applications of such endophytes are discussed in detail, including studies in pharmaceutical development and agricultural management of important microbial diseases. The beneficial effects that endophytic fungi provide to host plants-enhancing growth, increasing fitness, strengthening tolerance to abiotic and biotic stresses through secondary metabolites-are also discussed. The reader is provided with a comprehensive and detailed understanding of such relationships between endophytic fungi and their host.